CN112371348A - Lead-zinc sulfide ore flotation separation inhibitor and application method thereof - Google Patents
Lead-zinc sulfide ore flotation separation inhibitor and application method thereof Download PDFInfo
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- CN112371348A CN112371348A CN202011477960.9A CN202011477960A CN112371348A CN 112371348 A CN112371348 A CN 112371348A CN 202011477960 A CN202011477960 A CN 202011477960A CN 112371348 A CN112371348 A CN 112371348A
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- inhibitor
- lead
- flotation separation
- zinc sulfide
- sulfide ore
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- 239000003112 inhibitor Substances 0.000 title claims abstract description 69
- 238000005188 flotation Methods 0.000 title claims abstract description 45
- 229910052984 zinc sulfide Inorganic materials 0.000 title claims abstract description 43
- 238000000926 separation method Methods 0.000 title claims abstract description 35
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 239000005083 Zinc sulfide Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 21
- 229910052950 sphalerite Inorganic materials 0.000 claims abstract description 44
- 229910052949 galena Inorganic materials 0.000 claims abstract description 35
- XCAUINMIESBTBL-UHFFFAOYSA-N lead(ii) sulfide Chemical compound [Pb]=S XCAUINMIESBTBL-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000006260 foam Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- LMHAGAHDHRQIMB-UHFFFAOYSA-N 1,2-dichloro-1,2,3,3,4,4-hexafluorocyclobutane Chemical compound FC1(F)C(F)(F)C(F)(Cl)C1(F)Cl LMHAGAHDHRQIMB-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 10
- 239000011707 mineral Substances 0.000 claims description 10
- 239000003814 drug Substances 0.000 claims description 9
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- 239000002283 diesel fuel Substances 0.000 claims description 2
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims description 2
- 239000004088 foaming agent Substances 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 150000002430 hydrocarbons Chemical class 0.000 claims description 2
- 239000003350 kerosene Substances 0.000 claims description 2
- 238000010979 pH adjustment Methods 0.000 claims description 2
- 239000012991 xanthate Substances 0.000 claims description 2
- 230000002401 inhibitory effect Effects 0.000 abstract description 11
- 239000012141 concentrate Substances 0.000 abstract description 6
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 abstract 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000008396 flotation agent Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 14
- 238000007667 floating Methods 0.000 description 13
- 238000011084 recovery Methods 0.000 description 12
- 239000003795 chemical substances by application Substances 0.000 description 10
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 10
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 8
- 229910052725 zinc Inorganic materials 0.000 description 8
- 239000011701 zinc Substances 0.000 description 8
- 238000002156 mixing Methods 0.000 description 7
- 239000012153 distilled water Substances 0.000 description 6
- WVYWICLMDOOCFB-UHFFFAOYSA-N 4-methyl-2-pentanol Chemical compound CC(C)CC(C)O WVYWICLMDOOCFB-UHFFFAOYSA-N 0.000 description 5
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 3
- 235000019345 sodium thiosulphate Nutrition 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 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 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000000711 cancerogenic effect Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 231100000315 carcinogenic Toxicity 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- MZGNSEAPZQGJRB-UHFFFAOYSA-N dimethyldithiocarbamic acid Chemical compound CN(C)C(S)=S MZGNSEAPZQGJRB-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052683 pyrite Inorganic materials 0.000 description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 2
- 239000011028 pyrite Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 description 2
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 2
- 229940001584 sodium metabisulfite Drugs 0.000 description 2
- 235000010262 sodium metabisulphite Nutrition 0.000 description 2
- 229910052979 sodium sulfide Inorganic materials 0.000 description 2
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- GNBVPFITFYNRCN-UHFFFAOYSA-M sodium thioglycolate Chemical compound [Na+].[O-]C(=O)CS GNBVPFITFYNRCN-UHFFFAOYSA-M 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 description 2
- 150000004764 thiosulfuric acid derivatives Chemical class 0.000 description 2
- 229910000368 zinc sulfate Inorganic materials 0.000 description 2
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 2
- CYWGSFFHHMQKET-UHFFFAOYSA-N 2-methylsulfanylethanamine Chemical compound CSCCN CYWGSFFHHMQKET-UHFFFAOYSA-N 0.000 description 1
- ZMYKITJYWFYRFJ-UHFFFAOYSA-N 4-oxo-4-(2-phenylethylamino)butanoic acid Chemical compound OC(=O)CCC(=O)NCCC1=CC=CC=C1 ZMYKITJYWFYRFJ-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- KXZJHVJKXJLBKO-UHFFFAOYSA-N chembl1408157 Chemical compound N=1C2=CC=CC=C2C(C(=O)O)=CC=1C1=CC=C(O)C=C1 KXZJHVJKXJLBKO-UHFFFAOYSA-N 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 229910052981 lead sulfide Inorganic materials 0.000 description 1
- 229940056932 lead sulfide Drugs 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 150000002828 nitro derivatives Chemical class 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- -1 phosphono, hydroxyl Chemical group 0.000 description 1
- 125000005499 phosphonyl group Chemical group 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 229940046307 sodium thioglycolate Drugs 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 239000011686 zinc sulphate Substances 0.000 description 1
Images
Classifications
-
- 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
- B03D1/004—Organic compounds
- B03D1/014—Organic compounds containing phosphorus
-
- 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
- B03D1/02—Froth-flotation processes
-
- 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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- Manufacture And Refinement Of Metals (AREA)
Abstract
本发明涉及硫化矿浮选药剂技术领域，尤其涉及一种铅锌硫化矿浮选分离抑制剂及其应用方法。本发明具体公开了一种铅锌硫化矿浮选分离抑制剂的应用方法，包括以下步骤S1：向铅锌硫化矿物中加水，得到矿浆；S2：向矿浆中加入2‑羟基膦酰基乙酸；S3：调节矿浆pH值；S4：充气浮选，得到泡沫产品和尾矿。本发明所提供抑制剂配制简单，对环境友好，不会产生污染；抑制剂溶解性好，选择性强，抑制效果好，适用pH范围广，用量少，价格便宜，易于大规模推广。本申请的抑制剂对闪锌矿具有优良抑制效果。可应用于铅锌混合精矿浮选分离，能够实现闪锌矿和方铅矿高效浮选分离。
The invention relates to the technical field of sulfide ore flotation agents, in particular to a lead-zinc sulfide ore flotation separation inhibitor and an application method thereof. The invention specifically discloses an application method of a lead-zinc sulfide ore flotation separation inhibitor, which comprises the following steps S1: adding water to the lead-zinc sulfide ore to obtain an ore slurry; S2: adding 2-hydroxyphosphonoacetic acid to the ore slurry; S3 : adjust the pH value of the pulp; S4: aerated flotation to obtain foam products and tailings. The inhibitor provided by the invention has the advantages of simple preparation, environmental friendliness and no pollution; the inhibitor has good solubility, strong selectivity, good inhibitory effect, wide applicable pH range, low dosage, low price and easy large-scale promotion. The inhibitor of the present application has an excellent inhibitory effect on sphalerite. It can be applied to the flotation separation of lead-zinc mixed concentrate, and can realize the efficient flotation separation of sphalerite and galena.
Description
Technical Field
The invention relates to the technical field of sulfide ore flotation reagents, in particular to a lead-zinc sulfide ore flotation separation inhibitor and an application method thereof.
Background
The zinc blende is an important non-ferrous metal resource, occupies a great position in national economic development, and is widely applied to the fields of steel, chemical industry, machinery, electricity, military industry and the like. The zinc blende in China is rich in resources, but generally has the characteristics of less rich ores, more low-grade ores, more associated elements, complex ore properties and the like. By 2015, the zinc resource reserves which have been proved in China are 4103 ten thousand tons, and the zinc resource reserves are second to Australia and second in the world. Along with the rapid development of Chinese economy, the demand of China for zinc resources is increasing day by day, and industrial products taking lead and zinc as raw materials are widely applied to various fields of national economy. The sphalerite is usually associated with galena, and most of lead-zinc ores in China have low lead and high zinc, and lead and zinc are difficult to separate due to the characteristic of low lead and high zinc. Under the condition that high-grade sphalerite which is easy to select and is easy to select is exhausted in China, the development and utilization of lead-zinc ore which is difficult to select has important significance for relieving the pressure of resource shortage. In recent years, with the continuous and deep research, the lead-zinc flotation separation technology has made great progress, but still has great development space.
The method currently most used in the field of lead-zinc flotation separation is the suppression of sphalerite flotation galena, and sphalerite suppressants include inorganic suppressants such as cyanides (sodium cyanide, potassium cyanide, etc.), sulfites and thiosulfates (sodium sulfide, sodium hydrosulfide, sodium thiosulfate, etc.), and other organic suppressants such as azo compounds and sodium thioglycolate, etc. Cyanide has the characteristic of strong inhibition capacity on sphalerite, but because of the defects of high toxicity, great environmental pollution and dissolution of noble metals associated with gold and silver in the lead-zinc ore, the cyanide is basically abandoned at present. Sulfuric acid and sulfite are used to inhibit sphalerite by adding sulfur dioxide, sulfurous acid, sodium sulfite, sodium bisulfite, sodium thiosulfate, etc., and are generally used in combination with zinc sulfate. Sulfites and thiosulfates, at pH 4.5 to 6, have a strong inhibitory effect on zincblende, but the pH range of application is too small and sulfites are prone to oxidative failure. Many azo compounds are carcinogenic, and some azo compounds are not carcinogenic, but have similar toxicity to nitro compounds and aromatic amines. Thioglycolic acid is highly corrosive and has a strong pungent odor. The above-mentioned agents have problems of poor selectivity, environmental pollution, etc. Therefore, the zinc blende inhibitor is used as the key for the high-efficiency separation of lead and zinc flotation, and the development of the novel zinc blende inhibitor which is high-efficiency, non-toxic, low in cost and environment-friendly has very important economic value for the separation of lead and zinc sulfide ores.
In the aspect of medicament synthesis, Chinese patent CN111715410A discloses 'a combined inhibitor of zinc sulfide ore and application thereof', and the method utilizes water-soluble micromolecule carboxylic acid PESA and conventional inhibitor Na2SO3And ZnSO4The sphalerite inhibitor is prepared according to a certain mass ratio. Chinese patent CN110216017A reports "a combined inhibitor for improving the production index of wurtzite and application thereof", and the method prepares a wurtzite combined inhibitor consisting of calcium chloride, polyamine, sodium metabisulfite and sodium humate. The synthesis process is complex, wherein the sodium metabisulfite has strong SO2Odor, SO evolution on contact with strong acids2Corresponding salts are formed, and SO is decomposed at a temperature higher than 150 DEG C2And the environment is polluted. Chinese patent CN104437881A discloses a method for preparing a zincite inhibitor, which comprises the steps of preparing a solution with the mass percentage concentration of 30-35% by adding water into bark and sodium carbonate, standing, heating, stewing, mixing with sodium humate, adding water to prepare a solution, stirring the solution for 2-3h, and evaporating at 65-75 ℃ to obtain the zincite inhibitor. The method has complex synthesis process, increases the cost of preparing the medicament, and is difficult to use on a large scale. Chinese patent CN103909020A discloses 'an inhibitor for floatation separation of galena, pyrite and blende and a separation method thereof', the method takes the raw ore of lead-zinc sulphide ore as the raw materialAdding SDSN (dimethyl dithiocarbamate: 2-methyl thioethylamine = 1-3: 1) into the feed as an inhibitor of sphalerite and pyrite. Wherein, the dimethyl dithiocarbamate has stimulating effect on eyes, respiratory tract and skin, which is not suitable for large-scale popularization and application.
Disclosure of Invention
In view of the above disadvantages, the present invention aims to provide an inhibitor having a good inhibitory effect on sphalerite in lead-zinc sulfide ore, which has the advantages of strong selectivity, good inhibitory effect, low toxicity and no pollution.
The invention provides a lead-zinc sulfide ore flotation separation inhibitor which is 2-hydroxyphosphonoacetic acid.
The inhibitor provided by the application is an aqueous solution of 2-hydroxyphosphonoacetic acid, is mainly used as a metal cathode corrosion inhibitor, is widely applied to corrosion and scale inhibition of circulating cooling water systems in the industries of electric power, steel, medicine, petrifaction and the like, and is suitable for corrosion inhibitors. The inhibitor has the advantages of simple preparation, good chemical stability, difficult hydrolysis, difficult damage by acid and alkali, safe and reliable use and low cost.
The application of the flotation separation inhibitor for the lead-zinc sulfide ore is characterized in that: the inhibitor is used as an inhibitor of sphalerite and is used for flotation separation of sphalerite and galena.
The application also provides an application method of the flotation separation inhibitor for the lead-zinc sulfide ore, which comprises the following steps:
s1: adding water into lead-zinc sulfide minerals to obtain ore pulp;
s2: adding 2-hydroxyphosphonoacetic acid into the pulp;
s3: adjusting the pH value of the ore pulp;
s4: and (4) performing air flotation to obtain a foam product and tailings.
Further, the pH adjustment range in S3 is 4-12.
Further, a collector is added in the step S3.
Further, the collecting agent is at least one of xanthate, black powder, diesel oil, kerosene and hydrocarbon oil.
Further, a foaming agent is added to the S3.
Further, the concentration of 2-hydroxyphosphonoacetic acid added to S2 is 1-1000 mg/L.
Further, the lead-zinc sulfide minerals are mixed ores of sphalerite and galena.
In the application, the zinc blende inhibitor belongs to a small molecular organic matter, and the molecular result of the zinc blende inhibitor has phosphono, hydroxyl and carboxyl. The phosphonyl in the inhibitor molecule is easy to complex with zinc ions on the surface of the zinc blende, and simultaneously, the hydrophilic groups of hydroxyl and carboxyl are exposed in an aqueous solution, so that the mineral surface is inhibited from being hydrophilic, and the zinc blende is inhibited.
The invention has the beneficial effects that:
1) the inhibitor provided by the invention is simple to prepare, is environment-friendly and cannot generate pollution.
2) The inhibitor provided by the invention has the advantages of good solubility, strong selectivity, good inhibition effect, wide applicable pH range, small dosage, low price and easiness in large-scale popularization.
3) The separation effect and the separation cost of the inhibitor provided by the invention are obviously superior to those of the traditional zinc blende inhibitors such as sodium sulfide, sodium thiosulfate, sodium hydrosulfide, cyanide, sodium thioglycollate and the like in the prior art.
4) The inhibitor provided by the invention is low in dosage, environment-friendly, safe to add and safe to use.
5) The inhibitor has excellent inhibiting effect on sphalerite. The flotation separation method can be applied to flotation separation of lead-zinc bulk concentrates, and can realize high-efficiency flotation separation of sphalerite and galena.
Drawings
FIG. 1 is a system and flow chart of flotation reagents;
FIG. 2 is a graph of inhibitor concentration versus rate of ascent for example 1 of the present invention;
figure 3 is a graph of the pH value of the ore pulp and the flotation rate of the embodiment 2 of the invention.
Detailed Description
The present invention will be described in further detail with reference to examples, which are not intended to limit the technical scope of the present invention. The invention can be used for other purposes by anyone skilled in the art within the technical scope of the invention disclosure, and the relevant changes of raw materials, process conditions and the like can be properly realized by taking the technical content into consideration, and the invention can not depart from the technical content, and all similar substitutes and modifications which are obvious to those skilled in the art are deemed to be included in the technical scope of the invention.
In order to better explain the invention, the following text further illustrates the main content of the invention in connection with specific laboratory examples, but the content of the invention is not limited to the following examples only.
Example 1
2g of galena and sphalerite single mineral with the granularity of +38-74 mu m are respectively subjected to flotation, 50mL of distilled water is added into a 70mL tank-hanging flotation machine, and stirring and pulp mixing are carried out at the rotating speed of 1300r/min, so that the ore pulp is fully dispersed.
Adjusting the pH value of the ore pulp to 9 after adding the inhibitor, adding the medicament according to the medicament system described in figure 1, and stirring for 5min, 2min and 1min after adding the medicament, wherein the concentration of the type inhibitor is 0, 30, 50, 100, 200, 300, 400, 700 and 1000mg/L respectively. And (4) aerating and floating after stirring to obtain a foam product and tailings.
And respectively filtering, drying and weighing the foam product and the tailings, and calculating the floating rate, wherein the result is shown in figure 2.
The examples show that the inhibitor has weak inhibiting effect on galena, strong inhibiting effect on sphalerite, good selectivity and very low dosage.
Example 2
2g of galena and sphalerite single mineral with the granularity of 38-74 mu m are respectively floated, 50mL of distilled water is added into a 70mL tank-hanging flotation machine, and stirring and size mixing are carried out at the rotating speed of 1300r/min, so that the ore pulp is fully dispersed.
After the inhibitor is added, the pH value of the ore pulp of galena and the pH value of the ore pulp of sphalerite are adjusted to be 4, 6, 8, 9, 10 and 12, the adding sequence of the medicament is shown in figure 1, the inhibitor (100 mg/L), the butyl xanthate (20 mg/L) and the MIBC (20 mg/L) are added, and the medicament is sequentially stirred for 5min, 2min and 1min after being added. And (4) aerating and floating after stirring to obtain a foam product and tailings.
The foam product and the tailings were filtered, dried, weighed, and the flotation rate was calculated, the results are shown in fig. 3.
The examples show that the inhibitor has extremely low inhibitory effect on galena in the pH range of 6-12, the upward floating rate of the galena is as high as 90 percent, and the upward floating rate of the sphalerite is only 15 percent, which shows that the inhibitor has almost no inhibitory effect on the galena, has good inhibitory effect on the sphalerite and has wide applicable pH range.
Example 3
Taking 1.0g of galena and sphalerite single minerals with the particle size of between 38 and 74 mu m according to the weight ratio of 1: 1 proportion, adding 50mL of distilled water into a 70mL tank-hanging flotation machine, stirring and mixing pulp at the rotating speed of 1300r/min, and fully dispersing the pulp.
The adding sequence of the agents is shown in figure 1, after the inhibitor is added, the pH value of the ore pulp is adjusted to be 6, the inhibitor (700 mg/L), the butyl xanthate (20 mg/L) and the MIBC (20 mg/L) are added, and the agents are sequentially stirred for 5min, 2min and 1 min. And (4) aerating and floating after stirring to obtain a foam product and tailings.
And respectively filtering, drying and weighing the foam product and the tailings, calculating the floating rate, testing the grades of ZnS and PbS in the concentrate and calculating the recovery rates of ZnS and PbS. The results are shown in Table 1.
According to the embodiment, the inhibitor can realize the effective flotation separation of galena and sphalerite under the condition of 700mg/L, the galena recovery rate is up to 78.43%, and the sphalerite recovery rate is only 11.82%.
Example 4
Taking 1.0g of galena and sphalerite single minerals with the particle size of between 38 and 74 mu m according to the weight ratio of 1: 1 proportion, adding 50mL of distilled water into a 70mL tank-hanging flotation machine, stirring and mixing pulp at the rotating speed of 1300r/min, and fully dispersing the pulp.
The adding sequence of the agents is shown in figure 1, after the inhibitor is added, the pH value of the ore pulp is adjusted to be 8, the inhibitor (500 mg/L), the butyl xanthate (20 mg/L) and the MIBC (20 mg/L) are added, and the agents are sequentially stirred for 5min, 2min and 1 min. And (4) aerating and floating after stirring to obtain a foam product and tailings.
And respectively filtering, drying and weighing the foam product and the tailings, calculating the floating rate, testing the grades of ZnS and PbS in the concentrate and calculating the recovery rates of ZnS and PbS. The results are shown in Table 1.
According to the embodiment, the inhibitor can realize effective flotation separation of galena and sphalerite under the condition of 500mg/L, the galena recovery rate is up to 80.07%, and the sphalerite recovery rate is only 12.80%.
Example 5
Taking 1.0g of galena and sphalerite single minerals with the particle size of between 38 and 74 mu m according to the weight ratio of 1: 1 proportion, adding 50mL of distilled water into a 70mL tank-hanging flotation machine, stirring and mixing pulp at the rotating speed of 1300r/min, and fully dispersing the pulp.
The adding sequence of the agents is shown in figure 1, after the inhibitor is added, the pH value of the ore pulp is adjusted to 10, the inhibitor (200 mg/L), the butyl xanthate (20 mg/L) and the MIBC (20 mg/L) are added, and the agents are sequentially stirred for 5min, 2min and 1 min. And (4) aerating and floating after stirring to obtain a foam product and tailings.
And respectively filtering, drying and weighing the foam product and the tailings, calculating the floating rate, testing the grades of ZnS and PbS in the concentrate and calculating the recovery rates of ZnS and PbS. The results are shown in Table 1.
According to the embodiment, the inhibitor can realize the effective flotation separation of galena and sphalerite under the condition of 200mg/L, the galena recovery rate is up to 82.81%, and the sphalerite recovery rate is only 15.47%.
Example 6
Taking 1.0g of galena and sphalerite single minerals with the particle size of between 38 and 74 mu m according to the weight ratio of 1: 1 proportion, adding 50mL of distilled water into a 70mL tank-hanging flotation machine, stirring and mixing pulp at the rotating speed of 1300r/min, and fully dispersing the pulp.
The adding sequence of the agents is shown in figure 1, after the inhibitor is added, the pH value of the ore pulp is adjusted to be 12, the inhibitor (25 mg/L), the butyl xanthate (20 mg/L) and the MIBC (20 mg/L) are added, and the agents are sequentially stirred for 5min, 2min and 1 min. And (4) aerating and floating after stirring to obtain a foam product and tailings.
And respectively filtering, drying and weighing the foam product and the tailings, calculating the floating rate, testing the grades of ZnS and PbS in the concentrate and calculating the recovery rates of ZnS and PbS. The results are shown in Table 1.
According to the embodiment, the inhibitor can realize effective flotation separation of galena and sphalerite under the condition of 25mg/L, the galena recovery rate is up to 88.51%, and the sphalerite recovery rate is only 21.55%.
The embodiments of the present invention have been described above by way of example, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the application of the present invention shall fall within the scope of the patent of the present invention.
Claims (8)
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