CN111617884A - Flotation separation method for copper, lead, zinc and arsenic in complex multi-metal sulfide ore - Google Patents
Flotation separation method for copper, lead, zinc and arsenic in complex multi-metal sulfide ore Download PDFInfo
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- CN111617884A CN111617884A CN202010500038.0A CN202010500038A CN111617884A CN 111617884 A CN111617884 A CN 111617884A CN 202010500038 A CN202010500038 A CN 202010500038A CN 111617884 A CN111617884 A CN 111617884A
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- copper
- lead
- zinc
- arsenic
- scavenging
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 131
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 131
- 239000010949 copper Substances 0.000 title claims abstract description 131
- 239000011133 lead Substances 0.000 title claims abstract description 114
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 239000011701 zinc Substances 0.000 title claims abstract description 106
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 106
- 238000005188 flotation Methods 0.000 title claims abstract description 99
- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 82
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 238000000926 separation method Methods 0.000 title claims abstract description 66
- 229910052976 metal sulfide Inorganic materials 0.000 title claims abstract description 17
- MSCREBDQWCCPRK-UHFFFAOYSA-N [Pb].[Zn].[As].[Cu] Chemical compound [Pb].[Zn].[As].[Cu] MSCREBDQWCCPRK-UHFFFAOYSA-N 0.000 claims abstract description 126
- 239000012141 concentrate Substances 0.000 claims abstract description 125
- 230000002000 scavenging effect Effects 0.000 claims abstract description 87
- 238000003756 stirring Methods 0.000 claims abstract description 59
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 36
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 22
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical compound CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 claims abstract description 20
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229940116411 terpineol Drugs 0.000 claims abstract description 20
- 238000000227 grinding Methods 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 239000004088 foaming agent Substances 0.000 claims abstract description 6
- UXNBTDLSBQFMEH-UHFFFAOYSA-N [Cu].[Zn].[Pb] Chemical compound [Cu].[Zn].[Pb] UXNBTDLSBQFMEH-UHFFFAOYSA-N 0.000 claims description 61
- 239000003112 inhibitor Substances 0.000 claims description 32
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 24
- 239000010665 pine oil Substances 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 239000003921 oil Substances 0.000 claims description 20
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 19
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 19
- 239000004571 lime Substances 0.000 claims description 19
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 16
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 16
- 239000007844 bleaching agent Substances 0.000 claims description 16
- 239000011734 sodium Substances 0.000 claims description 16
- 229910052708 sodium Inorganic materials 0.000 claims description 16
- 239000003814 drug Substances 0.000 claims description 15
- 235000019353 potassium silicate Nutrition 0.000 claims description 15
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 15
- 229910052979 sodium sulfide Inorganic materials 0.000 claims description 15
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims description 15
- 235000010265 sodium sulphite Nutrition 0.000 claims description 12
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 12
- 229960001763 zinc sulfate Drugs 0.000 claims description 12
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 12
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 11
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 11
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 11
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 11
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 11
- 229940079593 drug Drugs 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- DSCFFEYYQKSRSV-UHFFFAOYSA-N 1L-O1-methyl-muco-inositol Natural products COC1C(O)C(O)C(O)C(O)C1O DSCFFEYYQKSRSV-UHFFFAOYSA-N 0.000 claims description 6
- VJXUJFAZXQOXMJ-UHFFFAOYSA-N D-1-O-Methyl-muco-inositol Natural products CC12C(OC)(C)OC(C)(C)C2CC(=O)C(C23OC2C(=O)O2)(C)C1CCC3(C)C2C=1C=COC=1 VJXUJFAZXQOXMJ-UHFFFAOYSA-N 0.000 claims description 6
- DSCFFEYYQKSRSV-KLJZZCKASA-N D-pinitol Chemical compound CO[C@@H]1[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)[C@H]1O DSCFFEYYQKSRSV-KLJZZCKASA-N 0.000 claims description 6
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 239000004615 ingredient Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 13
- 239000011707 mineral Substances 0.000 description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 4
- 235000011613 Pinus brutia Nutrition 0.000 description 4
- 241000018646 Pinus brutia Species 0.000 description 4
- 238000011084 recovery Methods 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- WIKSRXFQIZQFEH-UHFFFAOYSA-N [Cu].[Pb] Chemical compound [Cu].[Pb] WIKSRXFQIZQFEH-UHFFFAOYSA-N 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 1
- 229910052569 sulfide mineral Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/007—Modifying reagents for adjusting pH or conductivity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to the technical field of metallurgy, and discloses a copper, lead, zinc and arsenic flotation separation method for complex multi-metal sulfide ores, which comprises the following steps: step S1: ore grinding operation: crushing raw ore and putting the crushed raw ore and water into a ball mill for grinding, wherein the discharge condition of the ball mill is that the grinding fineness of the ball mill reaches-0.074 mm and accounts for 65-70%; step S2: copper-lead-zinc-arsenic mixed flotation operation: adding dilute sulfuric acid into a flotation machine to adjust the pH value of the ore pulp to be alkalescent, taking butyl xanthate as a collecting agent and terpineol oil as a foaming agent, stirring respectively in the adding process, and then carrying out primary roughing, tertiary fine concentration and twice scavenging to obtain copper-lead-zinc-arsenic mixed concentrate and tailings. The reagent used in the design of the invention is a conventional beneficiation reagent, has no pollution to the environment, low price, easy acquisition in the market, convenient cost control, good separation effect of copper, lead, zinc and arsenic valuable elements, high quality of the obtained concentrate product and low metal content in the concentrate product.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to a copper-lead-zinc-arsenic flotation separation method for complex multi-metal sulfide ores.
Background
Non-ferrous metal mineral resources play an important role in national economy and are widely applied to various industries and fields. The polymetallic sulphide ore is the largest mineral resource for extracting nonferrous metals, high-grade high-quality resources are exhausted due to continuous development in recent years, the types of copper, lead and zinc resources are complex, the content of useful minerals is relatively low, the embedding relationship among the minerals is complex and changeable, and the polymetallic copper, lead and zinc ore becomes a difficult problem in the beneficiation of the polymetallic sulphide ore. In addition, the multi-metal sulfide ore is often associated with arsenic-containing minerals, arsenic is a toxic mineral product and has great pollution and harm to the environment and organisms, the arsenic minerals are often mixed into copper, lead and zinc concentrate in the ore dressing process, and toxic and harmful substances are generated in the subsequent smelting and acid making processes to seriously pollute the environment and influence the ecological balance, so that the research on separating arsenic from the multi-metal sulfide ore containing arsenic has very important significance in the aspects of environmental protection and improvement of dressing and smelting benefits.
The beneficiation of copper-lead-zinc polymetallic sulphide ores at home and abroad is mainly carried out by flotation, and the traditional process is a preferential flotation process and a partial mixing preferential flotation process. A preferential flotation process: according to the sequence of floatability and floating speed among sulfide minerals such as copper, lead, zinc and the like in the ore, copper concentrate, lead concentrate, zinc concentrate and tailings are respectively obtained by flotation from the ore pulp in sequence. The method is suitable for ores with simple mineral composition, high raw ore grade, large difference of floatability among useful ores and coarse embedded granularity. Partial mixing preferential flotation process: two kinds of useful minerals with similar floatability are selected into the bulk concentrate, and then separation flotation is carried out, namely copper sulfide and lead ores with similar floatability are selected into bulk concentrate, then copper and lead separation is carried out, and the copper and lead tailings are reactivated to select zinc concentrate. Is suitable for ores with similar floatability, and is the most widely applied process at present.
The prior flotation process and the partial mixing prior flotation process both use a thio-compound as a collector to float nonferrous metal sulfides, arsenic-containing minerals are usually floated into concentrate in the flotation process, the quality of the concentrate is influenced, and simultaneously, the loss and the waste of arsenic resources are caused. The method is characterized in that a part of mixed preferential flotation process is adopted for multi-metal sulfide ores with close mineral symbiotic relationship and fine embedded particle size to obtain copper-lead bulk concentrates, the most effective method for separating copper from lead at present is to use cyanide to inhibit lead flotation and potassium dichromate to inhibit lead flotation, and the defects are that cyanide is extremely toxic and heavy chromate ions can cause serious pollution to the environment. Based on the analysis, aiming at the problem of the separation of copper, lead, zinc and arsenic in the multi-metal sulfide ore, the development of a mineral separation process which has the advantages of good separation effect, simple flow and environmental-friendly medicament system has important practical significance, so that a complex flotation separation method for the copper, lead, zinc and arsenic in the multi-metal sulfide ore is provided.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides the flotation separation method for the copper, lead, zinc and arsenic in the complex multi-metal sulfide ore, which is environment-friendly, low in production cost and good in separation effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a copper, lead, zinc and arsenic flotation separation method for complex multi-metal sulfide ores comprises the following steps:
step S1: ore grinding operation: crushing raw ore, putting the crushed raw ore and water into a ball mill for grinding, wherein the ratio of the raw ore to the water is 1: 1, discharging the material by a ball mill under the condition that the grinding fineness reaches-0.074 mm and accounts for 65-70%;
step S2: copper-lead-zinc-arsenic mixed flotation operation: adding dilute sulfuric acid into a flotation machine to adjust the pH value of the ore pulp to be alkalescent, taking butyl xanthate as a collecting agent and terpineol oil as a foaming agent, stirring respectively in the adding process, and then carrying out primary roughing, tertiary fine concentration and twice scavenging to obtain copper-lead-zinc-arsenic mixed concentrate and tailings;
step S3: separating copper, lead and zinc from arsenic: adding sodium sulfide and activated carbon into the copper-lead-zinc-arsenic bulk concentrate obtained in the step S2 for drug removal treatment, and then sequentially adding a combined inhibitor for separation of copper, lead, zinc and arsenic to obtain the copper-lead-zinc bulk concentrate and arsenic concentrate, wherein the ingredients of the combined inhibitor are lime, sodium humate, bleaching powder, butyl xanthate and pine oil;
step S4: copper and lead-zinc separation I: adding 500-700 g/t of sodium sulfide into the copper-lead-zinc bulk concentrate in the copper-lead-zinc bulk concentrate obtained in the step S3, stirring for 6 minutes for secondary reagent removal, sequentially adding a combined inhibitor with the components of 2000-3000 g/t of zinc sulfate, 1500-2500 g/t of sodium sulfite and 100-150 g/t of sodium carboxymethylcellulose, sequentially adding 15-25 g/t of Z-200# and 10-20 g/t of pine oil, stirring for 5 minutes, 3 minutes and 1 minute respectively, then separating copper from lead and zinc, feeding the concentrate obtained in the first step of separating copper from lead and zinc into a second step of separating copper from lead and zinc, and feeding tailings into a copper scavenging operation;
step S5: and (3) separating copper from lead and zinc II: sequentially adding a combined inhibitor with the components of 1000-1500 g/t zinc sulfate, 800-1500 g/t sodium sulfite and 50-100 g/t sodium carboxymethylcellulose into a flotation machine, sequentially adding 15-25 g/t Z-200# and 10-20 g/t pine oil, stirring for 5 minutes, 3 minutes and 1 minute respectively, and then carrying out copper-lead-zinc separation II, wherein the concentrate obtained by the copper-lead-zinc separation II is a final copper concentrate, and the middling of the copper-lead-zinc separation II returns to the copper-lead-zinc separation I;
step S6: copper scavenging: and (3) sequentially adding 10-20 g/t of Z-200# and 5-15 g/t of pinitol oil into the flotation machine, stirring for 3 minutes and 1 minute respectively, then carrying out copper scavenging, returning copper from scavenged middlings to separate I from lead and zinc, and scavenging tailings to obtain final lead and zinc bulk concentrates.
Preferably, in the step S2, dilute sulfuric acid is added into the flotation machine to adjust the pH value of the ore pulp to 5-6, butyl xanthate 70-90 g/t and terpineol 25-30 g/t are added, the mixture is stirred for 2 minutes and 1 minute respectively, then copper-lead-zinc-arsenic mixed flotation roughing is performed, the obtained copper-lead-zinc-arsenic mixed rough concentrate enters a concentration operation, and rougher tailings enter a scavenging operation.
Preferably, in the step S2, the amount of the added water glass in the flotation machine is 300-400 g/t, the mixture is stirred for 2 minutes, then copper-lead-zinc-arsenic concentration i is performed, the concentrate of the copper-lead-zinc-arsenic concentration i enters copper-lead-zinc-arsenic concentration ii, and the middlings of the copper-lead-zinc-arsenic concentration i are returned to the copper-lead-zinc-arsenic roughing operation.
Preferably, in the step S2, the copper-lead-zinc-arsenic concentration II is performed after the adding of 150-200 g/t of water glass in the flotation machine and stirring for 2 minutes, the copper-lead-zinc-arsenic concentration II concentrate enters the copper-lead-zinc-arsenic concentration III, and the middlings in the copper-lead-zinc-arsenic concentration II are returned to the copper-lead-zinc-arsenic mixed rough concentrate concentration I.
Preferably, in the step S2, the copper-lead-zinc-arsenic concentration iii is performed after the addition of water glass in an amount of 50 to 100g/t in the flotation machine and stirring for 2 minutes, the concentrate of the copper-lead-zinc-arsenic concentration iii is finally a copper-lead-zinc-arsenic bulk concentrate, and the middlings of the copper-lead-zinc-arsenic concentration iii are returned to the copper-lead-zinc-arsenic bulk concentrate concentration ii.
Preferably, in the step S2, 30-40 g/t of butyl xanthate and 10-15 g/t of terpineol oil are added into the flotation machine, the mixture is stirred for 2 minutes and 1 minute respectively, copper-lead-zinc-arsenic scavenging I is performed, tailings of the copper-lead-zinc-arsenic scavenging I enter a copper-lead-zinc-arsenic scavenging II, and middlings of the copper-lead-zinc-arsenic scavenging I are returned to the copper-lead-zinc-arsenic roughing operation.
Preferably, in the step S2, adding 15-20 g/t of butyl xanthate and 5-10 g/t of terpineol oil into the flotation machine, stirring for 2 minutes and 1 minute respectively, and then performing copper-lead-zinc-arsenic scavenging ii, wherein the tailings of the copper-lead-zinc-arsenic scavenging ii are final tailings, and the middlings of the copper-lead-zinc-arsenic scavenging ii are returned to the copper-lead-zinc-arsenic scavenging i.
Preferably, in the step S3, 500-600 g/t of sodium sulfide and 700-800 g/t of activated carbon are simultaneously added into the copper-lead-zinc-arsenic bulk concentrate, after stirring for 8 minutes to achieve a drug removal effect, a combined inhibitor containing 800-1000 g/t of lime, 200-300 g/t of sodium humate and 600-800 g/t of bleaching powder is sequentially added, then 40-60 g/t of butyl xanthate and 10-20 g/t of pine oil are sequentially added, stirring is respectively carried out for 4 minutes, 2 minutes and 1 minute, then copper-lead-zinc and arsenic are separated, the concentrate obtained by separating the copper-lead-zinc and arsenic is the copper-lead-zinc bulk concentrate, and tailings enter copper-zinc scavenging.
Preferably, in the step S3, a combined inhibitor containing 400-600 g/t of lime, 100-200 g/t of sodium humate and 300-500 g/t of bleaching powder is sequentially added into the flotation machine, then 20-30 g/t of butyl xanthate and 5-10 g/t of pine oil are sequentially added, copper-lead-zinc scavenging is performed after stirring for 4 minutes, 2 minutes and 1 minute respectively, the scavenged middlings are returned to the copper-lead-zinc and arsenic separation operation, and the tailings are the final arsenic concentrates.
Compared with the prior art, the invention provides a flotation separation method for copper, lead, zinc and arsenic of complex polymetallic sulphide ores, which adopts a partial mixing-preferential flotation method for high-sulfur copper, lead and zinc polymetallic ores at present, and when a traditional lime, zinc sulfate and sodium sulfite combined reagent is used for inhibiting zinc-sulfur minerals, the consumption of lime is large, and fine ore particles are condensed due to the excessive consumption of lime, so that foams are sticky and even run away from a groove, and zinc floats upwards in advance due to the use of a collecting agent with poor selectivity during the partial mixing flotation of copper and lead, so that the metal content in each concentrate product is higher finally. The method breaks through the traditional alkaline system (the pH value is not less than 11), and sulfide ore flotation is carried out in a weak acid system, so that the dosage and the type of the medicament in the flotation process are greatly reduced, the multi-metal flotation process is simplified, and the subsequent process treatment capacity is reduced; the inhibitor lime, sodium humate and bleaching powder used for separating copper, lead and zinc from arsenic and the inhibitor zinc sulfate, sodium sulfite and sodium carboxymethylcellulose used for separating copper and lead and zinc have the advantages of novel combination, low medicament dosage, low price, good separation effect and the following advantages:
(1) the medicament used by the invention is a conventional beneficiation medicament, has no pollution to the environment, is low in price, is easy to purchase in the market, and is convenient for cost control;
(2) the method has good separation effect of the copper, lead, zinc and arsenic valuable elements, the obtained concentrate product has high quality, and the metal content in the concentrate product is low;
(3) the method has the advantages of stable technical indexes, comprehensive and efficient treatment and recovery of useful elements in fine-grained complex copper-lead-zinc polymetallic sulfide ores and similar ores, obvious effect and strong universal applicability. The copper grade in the obtained copper concentrate is more than 18 percent, the copper recovery rate is more than 70 percent, the lead grade in the lead-zinc bulk concentrate is more than 15, the zinc grade is more than 36, the lead and zinc grade is more than 55, and the lead and zinc recovery rates are more than 70 percent and meet the quality requirement of grade I of the industry standard (YS/T452-2002);
the reagent used in the design of the invention is a conventional beneficiation reagent, has no pollution to the environment, low price, easy acquisition in the market, convenient cost control, good separation effect of copper, lead, zinc and arsenic valuable elements, high quality of the obtained concentrate product and low metal content in the concentrate product.
Drawings
FIG. 1 is a process flow diagram of the flotation separation method of copper, lead, zinc and arsenic in complex multi-metal sulfide ores provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
A copper, lead, zinc and arsenic flotation separation method for complex multi-metal sulfide ores comprises the following steps:
step S1: ore grinding operation: crushing raw ore, putting the crushed raw ore and water into a ball mill for grinding, wherein the ratio of the raw ore to the water is 1: 1, discharging the materials by a ball mill under the condition that the fineness of ore grinding reaches-0.074 mm and accounts for 65 percent;
step S2: copper-lead-zinc-arsenic mixed flotation operation: adding dilute sulfuric acid into a flotation machine to adjust the pH value of the ore pulp to be alkalescent, taking butyl xanthate as a collecting agent and pinitol oil as a foaming agent, stirring respectively in the adding process, and then carrying out primary roughing, tertiary fine selection and twice scavenging to obtain copper-lead-zinc-arsenic mixed concentrate and tailings;
step S3: separating copper, lead and zinc from arsenic: adding sodium sulfide and activated carbon into the copper-lead-zinc-arsenic bulk concentrate obtained in the step S2 for drug removal treatment, and then sequentially adding a combined inhibitor for separation of copper, lead, zinc and arsenic to obtain the copper-lead-zinc bulk concentrate and arsenic concentrate, wherein the ingredients of the combined inhibitor are lime, sodium humate, bleaching powder, butyl xanthate and pine oil;
step S4: copper and lead-zinc separation I: adding 500g/t of sodium sulfide into the copper-lead-zinc bulk concentrate in the copper-lead-zinc bulk concentrate obtained in the step S3, stirring for 6 minutes for secondary reagent removal, sequentially adding a combined inhibitor with the components of 2000g/t of zinc sulfate, 1500g/t of sodium sulfite and 100g/t of sodium carboxymethylcellulose, sequentially adding Z-200#15g/t and 10g/t of pine alcohol oil, stirring for 5 minutes, 3 minutes and 1 minute respectively, then separating copper from lead and zinc, feeding the concentrate obtained in the step I for separating copper from lead and zinc into a copper-lead-zinc separation II, and feeding tailings into a copper scavenging operation;
step S5: and (3) separating copper from lead and zinc II: sequentially adding a combined inhibitor with the components of 1000g/t zinc sulfate, 800g/t sodium sulfite and 50g/t sodium carboxymethylcellulose into a flotation machine, sequentially adding Z-200#15g/t and 10g/t pine oil, stirring for 5 minutes, 3 minutes and 1 minute respectively, and then carrying out copper-lead-zinc separation II, wherein the concentrate obtained by the copper-lead-zinc separation II is a final copper concentrate, and the middling of the copper-lead-zinc separation II returns to the copper-lead-zinc separation I;
step S6: copper scavenging: adding 10g/t of Z-200# and 5g/t of pine oil in sequence in a flotation machine, stirring for 3 minutes and 1 minute respectively, then carrying out copper scavenging, returning copper from scavenging middlings to separate I from lead and zinc, and scavenging tailings to obtain final lead and zinc bulk concentrates.
In the embodiment, in step S2, dilute sulfuric acid is added into a flotation machine to adjust the pH value of the ore slurry to 6, butyl xanthate 70g/t and terpineol 25g/t are added, the mixture is stirred for 2 minutes and 1 minute respectively, then copper-lead-zinc-arsenic mixed flotation roughing is performed, the obtained copper-lead-zinc-arsenic mixed rough concentrate enters a concentration operation, and rougher tailings enter a scavenging operation; in step S2, adding water glass in an amount of 300g/t into the flotation machine, stirring for 2 minutes, and then carrying out copper-lead-zinc-arsenic concentration I, wherein the concentrate of the copper-lead-zinc-arsenic concentration I enters a copper-lead-zinc-arsenic concentration II, and the middlings of the copper-lead-zinc-arsenic concentration I are returned to the copper-lead-zinc-arsenic roughing operation.
In the embodiment, in step S2, the copper-lead-zinc-arsenic concentration II is carried out after adding 150g/t of water glass into a flotation machine and stirring for 2 minutes, the concentrate of the copper-lead-zinc-arsenic concentration II enters the copper-lead-zinc-arsenic concentration III, and the middlings of the copper-lead-zinc-arsenic concentration II are returned to the copper-lead-zinc-arsenic mixed rough concentrate concentration I; in step S2, adding water glass in an amount of 50g/t into the flotation machine, stirring for 2 minutes, and then carrying out copper-lead-zinc-arsenic concentration III, wherein the concentrate in the copper-lead-zinc-arsenic concentration III is finally a copper-lead-zinc-arsenic bulk concentrate, and the middlings in the copper-lead-zinc-arsenic concentration III are returned to the copper-lead-zinc-arsenic bulk concentrate concentration II.
In the embodiment, in step S2, adding 30g/t of butyl xanthate and 10g/t of terpineol oil into a flotation machine, stirring for 2 minutes and 1 minute respectively, and then performing copper-lead-zinc-arsenic scavenging I, enabling tailings of the copper-lead-zinc-arsenic scavenging I to enter a copper-lead-zinc-arsenic scavenging II, and returning middlings of the copper-lead-zinc-arsenic scavenging I to the copper-lead-zinc-arsenic roughing operation; in step S2, adding 15g/t of butyl xanthate and 5g/t of terpineol oil into the flotation machine, stirring for 2 minutes and 1 minute respectively, then performing copper-lead-zinc-arsenic scavenging II, taking the tailings of the copper-lead-zinc-arsenic scavenging II as final tailings, and returning the middlings of the copper-lead-zinc-arsenic scavenging II to the copper-lead-zinc-arsenic scavenging I.
In the embodiment, in step S3, adding 500g/t of sodium sulfide and 700g/t of activated carbon into the copper-lead-zinc-arsenic bulk concentrate, stirring for 8 minutes to achieve a drug removal effect, sequentially adding a combination inhibitor comprising 800g/t of lime, 200g/t of sodium humate and 600g/t of bleaching powder, sequentially adding 40g/t of butyl xanthate and 10g/t of pine alcohol oil, stirring for 4 minutes, 2 minutes and 1 minute respectively, and then separating copper, lead and zinc from arsenic, wherein the concentrate obtained by separating the copper, lead and zinc from the arsenic is the copper-lead-zinc bulk concentrate, and the tailings enter copper-lead-zinc scavenging; in step S3, a combined inhibitor with the components of 400g/t lime, 100g/t sodium humate and 300g/t bleaching powder is sequentially added into the flotation machine, then 20g/t butyl xanthate and 5g/t pine oil are sequentially added, copper-lead-zinc scavenging is carried out after stirring for 4 minutes, 2 minutes and 1 minute respectively, scavenging middlings are returned to the copper-lead-zinc and arsenic separation operation, and tailings are final arsenic concentrates.
Example two
A copper, lead, zinc and arsenic flotation separation method for complex multi-metal sulfide ores comprises the following steps:
step S1: ore grinding operation: crushing raw ore, putting the crushed raw ore and water into a ball mill for grinding, wherein the ratio of the raw ore to the water is 1: 1, discharging the materials by a ball mill under the condition that the grinding fineness reaches-0.074 mm and accounts for 68 percent;
step S2: copper-lead-zinc-arsenic mixed flotation operation: adding dilute sulfuric acid into a flotation machine to adjust the pH value of the ore pulp to be alkalescent, taking butyl xanthate as a collecting agent and pinitol oil as a foaming agent, stirring respectively in the adding process, and then carrying out primary roughing, tertiary fine selection and twice scavenging to obtain copper-lead-zinc-arsenic mixed concentrate and tailings;
step S3: separating copper, lead and zinc from arsenic: adding sodium sulfide and activated carbon into the copper-lead-zinc-arsenic bulk concentrate obtained in the step S2 for drug removal treatment, and then sequentially adding a combined inhibitor for separation of copper, lead, zinc and arsenic to obtain the copper-lead-zinc bulk concentrate and arsenic concentrate, wherein the ingredients of the combined inhibitor are lime, sodium humate, bleaching powder, butyl xanthate and pine oil;
step S4: copper and lead-zinc separation I: adding 600g/t of sodium sulfide into the copper-lead-zinc bulk concentrate in the copper-lead-zinc bulk concentrate obtained in the step S3, stirring for 6 minutes for secondary reagent removal, sequentially adding a combined inhibitor with the components of 2500g/t of zinc sulfate, 2000g/t of sodium sulfite and 125g/t of sodium carboxymethylcellulose, sequentially adding 20g/t of Z-200 and 15g/t of pine alcohol oil, stirring for 5 minutes, 3 minutes and 1 minute respectively, then separating copper from lead and zinc, feeding the concentrate obtained in the step I for separating copper from lead and zinc into a copper-lead-zinc separation II, and feeding tailings into a copper scavenging operation;
step S5: and (3) separating copper from lead and zinc II: sequentially adding a combined inhibitor with the components of 1250g/t zinc sulfate, 1200g/t sodium sulfite and 80g/t sodium carboxymethylcellulose into a flotation machine, sequentially adding 20g/t Z-200 and 15g/t pine oil, stirring for 5 minutes, 3 minutes and 1 minute respectively, and then carrying out copper-lead-zinc separation II, wherein the concentrate obtained by the copper-lead-zinc separation II is a final copper concentrate, and the middling of the copper-lead-zinc separation II returns to the copper-lead-zinc separation I;
step S6: copper scavenging: and (3) sequentially adding 15g/t of Z-200# and 10g/t of pine oil into a flotation machine, stirring for 3 minutes and 1 minute respectively, then carrying out copper scavenging, returning copper from scavenging middlings to separate I from lead and zinc, and scavenging tailings to obtain final lead and zinc bulk concentrates.
In the embodiment, in step S2, dilute sulfuric acid is added into a flotation machine to adjust the pH value of ore pulp to 5.5, butyl xanthate 80g/t and terpineol 28g/t are added, the mixture is stirred for 2 minutes and 1 minute respectively, then copper-lead-zinc-arsenic mixed flotation roughing is performed, the obtained copper-lead-zinc-arsenic mixed rough concentrate enters a fine concentration operation, and rougher tailings enter a scavenging operation; in step S2, adding 350g/t of water glass into the flotation machine, stirring for 2 minutes, and then carrying out copper-lead-zinc-arsenic concentration I, enabling the concentrate of the copper-lead-zinc-arsenic concentration I to enter a copper-lead-zinc-arsenic concentration II, and returning the middlings of the copper-lead-zinc-arsenic concentration I to the copper-lead-zinc-arsenic roughing operation.
In the embodiment, in step S2, the copper-lead-zinc-arsenic concentration II is carried out after the water glass is added into the flotation machine at the amount of 180g/t and stirred for 2 minutes, the concentrate of the copper-lead-zinc-arsenic concentration II enters the copper-lead-zinc-arsenic concentration III, and the middlings in the copper-lead-zinc-arsenic concentration II are returned to the copper-lead-zinc-arsenic mixed rough concentrate concentration I; in step S2, adding 80g/t of water glass into the flotation machine, stirring for 2 minutes, and then carrying out copper-lead-zinc-arsenic concentration III, wherein the concentrate in the copper-lead-zinc-arsenic concentration III is finally a copper-lead-zinc-arsenic bulk concentrate, and the middlings in the copper-lead-zinc-arsenic concentration III are returned to the copper-lead-zinc-arsenic bulk concentrate concentration II.
In the embodiment, in step S2, 35g/t of butyl xanthate and 13g/t of terpineol oil are added into a flotation machine, and after stirring for 2 minutes and 1 minute respectively, copper-lead-zinc-arsenic scavenging is performed, tailings of the copper-lead-zinc-arsenic scavenging i enter a copper-lead-zinc-arsenic scavenging ii, and middlings of the copper-lead-zinc-arsenic scavenging i are returned to the copper-lead-zinc-arsenic roughing operation; in step S2, adding 18g/t of butyl xanthate and 8g/t of terpineol oil into the flotation machine, stirring for 2 minutes and 1 minute respectively, then performing copper-lead-zinc-arsenic scavenging II, taking the tailings of the copper-lead-zinc-arsenic scavenging II as final tailings, and returning the middlings of the copper-lead-zinc-arsenic scavenging II to the copper-lead-zinc-arsenic scavenging I.
In the embodiment, in step S3, 550g/t of sodium sulfide and 750g/t of activated carbon are added into the copper-lead-zinc-arsenic bulk concentrate at the same time, after stirring for 8 minutes to achieve a drug removal effect, a combined inhibitor containing 900g/t of lime, 250g/t of sodium humate and 700g/t of bleaching powder is sequentially added, 50g/t of butyl xanthate and 15g/t of terpineol are sequentially added, after stirring for 4 minutes, 2 minutes and 1 minute respectively, copper-lead-zinc and arsenic are separated, the concentrate obtained by separating the copper-lead-zinc and arsenic is the copper-lead-zinc bulk concentrate, and tailings enter copper-lead-zinc scavenging; in step S3, a combined inhibitor with the components of 500g/t lime, 150g/t sodium humate and 400g/t bleaching powder is sequentially added into the flotation machine, 25g/t butyl xanthate and 8g/t pine oil are sequentially added, copper-lead-zinc scavenging is carried out after stirring for 4 minutes, 2 minutes and 1 minute respectively, the scavenging middlings are returned to the copper-lead-zinc and arsenic separation operation, and tailings are final arsenic concentrates.
EXAMPLE III
A copper, lead, zinc and arsenic flotation separation method for complex multi-metal sulfide ores comprises the following steps:
step S1: ore grinding operation: crushing raw ore, putting the crushed raw ore and water into a ball mill for grinding, wherein the ratio of the raw ore to the water is 1: 1, discharging the materials by a ball mill under the condition that the fineness of ore grinding reaches-0.074 mm and accounts for 70 percent;
step S2: copper-lead-zinc-arsenic mixed flotation operation: adding dilute sulfuric acid into a flotation machine to adjust the pH value of the ore pulp to be alkalescent, taking butyl xanthate as a collecting agent and pinitol oil as a foaming agent, stirring respectively in the adding process, and then carrying out primary roughing, tertiary fine selection and twice scavenging to obtain copper-lead-zinc-arsenic mixed concentrate and tailings;
step S3: separating copper, lead and zinc from arsenic: adding sodium sulfide and activated carbon into the copper-lead-zinc-arsenic bulk concentrate obtained in the step S2 for drug removal treatment, and then sequentially adding a combined inhibitor for separation of copper, lead, zinc and arsenic to obtain the copper-lead-zinc bulk concentrate and arsenic concentrate, wherein the ingredients of the combined inhibitor are lime, sodium humate, bleaching powder, butyl xanthate and pine oil;
step S4: copper and lead-zinc separation I: adding 700g/t of sodium sulfide into the copper-lead-zinc bulk concentrate in the copper-lead-zinc bulk concentrate obtained in the step S3, stirring for 6 minutes for secondary reagent removal, sequentially adding a combined inhibitor with the components of 3000g/t of zinc sulfate, 2500g/t of sodium sulfite and 150g/t of sodium carboxymethylcellulose, sequentially adding 25g/t of Z-200 and 20g/t of pine alcohol oil, stirring for 5 minutes, 3 minutes and 1 minute respectively, then separating copper from lead and zinc, feeding the concentrate obtained in the step I for separating copper from lead and zinc into a copper-lead-zinc separation II, and feeding tailings into a copper scavenging operation;
step S5: and (3) separating copper from lead and zinc II: sequentially adding a combined inhibitor with the components of 1500g/t zinc sulfate, 1500g/t sodium sulfite and 100g/t sodium carboxymethylcellulose into a flotation machine, sequentially adding 25g/t Z-200# and 20g/t pine oil, stirring for 5 minutes, 3 minutes and 1 minute respectively, and then carrying out copper-lead-zinc separation II, wherein the concentrate obtained by the copper-lead-zinc separation II is a final copper concentrate, and the middling in the copper-lead-zinc separation II returns to the copper-lead-zinc separation I;
step S6: copper scavenging: and sequentially adding 20g/t of Z-200# and 15g/t of pine oil into a flotation machine, stirring for 3 minutes and 1 minute respectively, then carrying out copper scavenging, returning copper from scavenging middlings to separate I from lead and zinc, and scavenging tailings to obtain final lead and zinc bulk concentrates.
In the embodiment, in step S2, dilute sulfuric acid is added into a flotation machine to adjust the pH value of ore pulp to 5, butyl xanthate 90g/t and terpineol 30g/t are added, the mixture is stirred for 2 minutes and 1 minute respectively, then copper-lead-zinc-arsenic mixed flotation roughing is performed, the obtained copper-lead-zinc-arsenic mixed rough concentrate enters a concentration operation, and rougher tailings enter a scavenging operation; in step S2, adding water glass with the dosage of 400g/t into the flotation machine, stirring for 2 minutes, and then carrying out copper-lead-zinc-arsenic concentration I, wherein the concentrate of the copper-lead-zinc-arsenic concentration I enters a copper-lead-zinc-arsenic concentration II, and the middlings of the copper-lead-zinc-arsenic concentration I are returned to the copper-lead-zinc-arsenic roughing operation.
In the embodiment, in step S2, the copper-lead-zinc-arsenic concentration II is carried out after the water glass is added into the flotation machine at the dosage of 200g/t and stirred for 2 minutes, the concentrate of the copper-lead-zinc-arsenic concentration II enters the copper-lead-zinc-arsenic concentration III, and the middlings in the copper-lead-zinc-arsenic concentration II are returned to the copper-lead-zinc-arsenic mixed rough concentrate concentration I; in step S2, the copper-lead-zinc-arsenic concentration III is carried out after the adding of water glass in the flotation machine is 100g/t and stirring is carried out for 2 minutes, the copper-lead-zinc-arsenic concentration III concentrate is finally the copper-lead-zinc-arsenic bulk concentrate, and the middlings in the copper-lead-zinc-arsenic concentration III are returned to the copper-lead-zinc-arsenic bulk concentrate concentration II.
In the embodiment, in step S2, 40g/t of butyl xanthate and 15g/t of terpineol oil are added into a flotation machine, the flotation machine is stirred for 2 minutes and 1 minute respectively, copper-lead-zinc-arsenic scavenging I is performed, tailings of the copper-lead-zinc-arsenic scavenging I enter a copper-lead-zinc-arsenic scavenging II, and middlings of the copper-lead-zinc-arsenic scavenging I are returned to the copper-lead-zinc-arsenic roughing operation; in step S2, 20g/t of butyl xanthate and 10g/t of terpineol oil are added into the flotation machine, copper-lead-zinc-arsenic scavenging II is carried out after stirring for 2 minutes and 1 minute respectively, tailings of the copper-lead-zinc-arsenic scavenging II are final tailings, and middlings of the copper-lead-zinc-arsenic scavenging II are returned to the copper-lead-zinc-arsenic scavenging I.
In the embodiment, in step S3, 600g/t of sodium sulfide and 800g/t of activated carbon are added to the copper-lead-zinc-arsenic bulk concentrate at the same time, after stirring for 8 minutes to achieve a drug removal effect, a combined inhibitor containing 1000g/t of lime, 300g/t of sodium humate and 800g/t of bleaching powder is sequentially added, 460g/t of butyl xanthate and 20g/t of terpineol are sequentially added, after stirring for 4 minutes, 2 minutes and 1 minute respectively, copper-lead-zinc and arsenic are separated, the concentrate obtained by separating the copper-lead-zinc and arsenic is the copper-lead-zinc bulk concentrate, and tailings enter copper-lead-zinc scavenging; in step S3, a combined inhibitor with the components of 600g/t lime, 200g/t sodium humate and 500g/t bleaching powder is sequentially added into the flotation machine, 30g/t butyl xanthate and 10g/t pine oil are sequentially added, copper-lead-zinc scavenging is carried out after stirring for 4 minutes, 2 minutes and 1 minute respectively, the scavenging middlings are returned to the copper-lead-zinc and arsenic separation operation, and tailings are final arsenic concentrates.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A flotation separation method for copper, lead, zinc and arsenic in complex multi-metal sulfide ores is characterized by comprising the following steps:
step S1: ore grinding operation: crushing raw ore, putting the crushed raw ore and water into a ball mill for grinding, wherein the ratio of the raw ore to the water is 1: 1, discharging the material by a ball mill under the condition that the grinding fineness reaches-0.074 mm and accounts for 65-70%;
step S2: copper-lead-zinc-arsenic mixed flotation operation: adding dilute sulfuric acid into a flotation machine to adjust the pH value of the ore pulp to be alkalescent, taking butyl xanthate as a collecting agent and pinitol oil as a foaming agent, stirring respectively in the adding process, and then carrying out primary roughing, tertiary fine selection and twice scavenging to obtain copper-lead-zinc-arsenic mixed concentrate and tailings;
step S3: separating copper, lead and zinc from arsenic: adding sodium sulfide and activated carbon into the copper-lead-zinc-arsenic bulk concentrate obtained in the step S2 for drug removal treatment, and then sequentially adding a combined inhibitor for separation of copper, lead, zinc and arsenic to obtain the copper-lead-zinc bulk concentrate and arsenic concentrate, wherein the ingredients of the combined inhibitor are lime, sodium humate, bleaching powder, butyl xanthate and pine oil;
step S4: copper and lead-zinc separation I: adding 500-700 g/t of sodium sulfide into the copper-lead-zinc bulk concentrate in the copper-lead-zinc bulk concentrate obtained in the step S3, stirring for 6 minutes for secondary reagent removal, sequentially adding a combined inhibitor with the components of 2000-3000 g/t of zinc sulfate, 1500-2500 g/t of sodium sulfite and 100-150 g/t of sodium carboxymethylcellulose, sequentially adding 15-25 g/t of Z-200# and 10-20 g/t of pine oil, stirring for 5 minutes, 3 minutes and 1 minute respectively, then separating copper from lead and zinc, feeding the concentrate obtained in the first step of separating copper from lead and zinc into a second step of separating copper from lead and zinc, and feeding tailings into a copper scavenging operation;
step S5: and (3) separating copper from lead and zinc II: sequentially adding a combined inhibitor with the components of 1000-1500 g/t zinc sulfate, 800-1500 g/t sodium sulfite and 50-100 g/t sodium carboxymethylcellulose into a flotation machine, sequentially adding 15-25 g/t Z-200# and 10-20 g/t pine oil, stirring for 5 minutes, 3 minutes and 1 minute respectively, and then carrying out copper-lead-zinc separation II, wherein the concentrate obtained by the copper-lead-zinc separation II is a final copper concentrate, and the middling of the copper-lead-zinc separation II returns to the copper-lead-zinc separation I;
step S6: copper scavenging: and (3) sequentially adding 10-20 g/t of Z-200# and 5-15 g/t of pinitol oil into the flotation machine, stirring for 3 minutes and 1 minute respectively, then carrying out copper scavenging, returning copper from scavenged middlings to separate I from lead and zinc, and scavenging tailings to obtain final lead and zinc bulk concentrates.
2. The flotation separation method for copper, lead, zinc and arsenic in complex polymetallic sulfide ores according to claim 1, wherein in step S2, dilute sulfuric acid is added into a flotation machine to adjust the pH value of ore pulp to 5-6, butyl xanthate 70-90 g/t and terpineol 25-30 g/t are added, the mixture is stirred for 2 minutes and 1 minute respectively, then copper, lead, zinc and arsenic mixed flotation roughing is carried out, the obtained copper, lead, zinc and arsenic mixed rough concentrate enters a concentration operation, and rougher tailings enter a scavenging operation.
3. The method for separating copper, lead, zinc and arsenic from complex polymetallic sulphide ores according to claim 1, wherein in step S2, the copper, lead, zinc and arsenic concentration I is performed after adding 300-400 g/t of water glass into a flotation machine and stirring for 2 minutes, the concentrate of the copper, lead, zinc and arsenic concentration I enters the copper, lead, zinc and arsenic concentration II, and the middlings of the copper, lead, zinc and arsenic concentration I are returned to the copper, lead, arsenic roughing operation.
4. The method for separating copper, lead, zinc and arsenic from complex polymetallic sulfide ores according to claim 1, wherein in step S2, the copper, lead, zinc and arsenic concentration II is performed after adding 150-200 g/t of water glass into a flotation machine and stirring for 2 minutes, the copper, lead, zinc and arsenic concentration II concentrate enters the copper, lead, zinc and arsenic concentration III, and the copper, lead, zinc and arsenic concentration II middlings return to the copper, lead, zinc and arsenic mixed rough concentrate concentration I.
5. The method for separating copper, lead, zinc and arsenic from complex polymetallic sulfide ores according to claim 1, wherein in step S2, the copper, lead, zinc and arsenic concentration III is performed after the water glass is added in the flotation machine at a dosage of 50-100 g/t and stirred for 2 minutes, the copper, lead, zinc and arsenic concentration III concentrate is finally a copper, lead, zinc and arsenic bulk concentrate, and the middlings in the copper, lead, zinc and arsenic concentration III are returned to the copper, lead, arsenic bulk concentrate concentration II.
6. The method for flotation separation of copper, lead and zinc as in claim 1, wherein in step S2, butyl xanthate 30-40 g/t and terpineol 10-15 g/t are added into a flotation machine, and after stirring for 2 minutes and 1 minute respectively, copper, lead and zinc as scavenging is performed for first time, tailings of copper, lead and zinc as scavenging are fed into a copper, lead and zinc as scavenging for second time, and middlings of copper, lead and zinc as scavenging for first time are returned to the copper, lead and zinc as roughing operation.
7. The method for flotation separation of copper, lead and zinc as in claim 1, wherein in step S2, butyl xanthate 15-20 g/t and terpineol 5-10 g/t are added into a flotation machine, and after stirring for 2 minutes and 1 minute respectively, copper, lead and zinc as scavenging ii is performed, wherein tailings of the copper, lead and zinc as scavenging ii are final tailings, and middlings of the copper, lead and zinc as scavenging ii are returned to the copper, lead and zinc as scavenging i.
8. The method for flotation separation of copper, lead and zinc as in claim 1, wherein in step S3, 500-600 g/t of sodium sulfide and 700-800 g/t of activated carbon are added into the copper, lead, zinc and arsenic bulk concentrate simultaneously, after stirring for 8 minutes to achieve a drug removal effect, a combined inhibitor containing 800-1000 g/t of lime, 200-300 g/t of sodium humate and 600-800 g/t of bleaching powder is sequentially added, 40-60 g/t of butyl xanthate and 10-20 g/t of terpineol oil are sequentially added, and after stirring for 4 minutes, 2 minutes and 1 minute respectively, copper, lead and zinc are separated from arsenic, the concentrate obtained by separating copper, lead and arsenic is copper, lead and zinc bulk concentrate, and tailings enter copper, lead and zinc scavenging.
9. The method for flotation separation of copper, lead, zinc and arsenic in the complex polymetallic sulphide ore according to claim 1, wherein in step S3, a combined inhibitor comprising 400-600 g/t of lime, 100-200 g/t of sodium humate and 300-500 g/t of bleaching powder is sequentially added into a flotation machine, 20-30 g/t of butyl xanthate and 5-10 g/t of pine oil are sequentially added, the mixture is stirred for 4 minutes, 2 minutes and 1 minute respectively, copper, lead and zinc scavenging is performed, scavenged middlings are returned to the copper, lead and zinc and arsenic separation operation, and tailings are final arsenic concentrates.
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| CN112973970A (en) * | 2021-03-02 | 2021-06-18 | 驰宏科技工程股份有限公司 | Method for removing arsenic in lead concentrate |
| CN114632630A (en) * | 2022-03-07 | 2022-06-17 | 广东省大宝山矿业有限公司 | Method for recovering copper and zinc from zinc-containing copper concentrate |
| CN116623014A (en) * | 2023-05-26 | 2023-08-22 | 中南大学 | A method for continuously preparing elemental arsenic from arsenic-containing materials |
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