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CN105251620B - A kind of complicated beneficiation method containing arsenic lead-zinc sulfide ore - Google Patents

A kind of complicated beneficiation method containing arsenic lead-zinc sulfide ore Download PDF

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CN105251620B
CN105251620B CN201410343439.4A CN201410343439A CN105251620B CN 105251620 B CN105251620 B CN 105251620B CN 201410343439 A CN201410343439 A CN 201410343439A CN 105251620 B CN105251620 B CN 105251620B
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zinc
lime
lead
time
ore
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CN105251620A (en
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于雪
孟宪瑜
陈新林
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Cnmc Shenyang Research Institute Of Nonferrous Metals Co ltd
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SHENYANG RESEARCH INSTITUTE OF NONFERROUS METALS
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Abstract

A kind of complicated beneficiation method containing arsenic lead-zinc sulfide ore, is characterized in:Raw ore is added into ore grinding in ball mill, into first tank diameter after add lime, zinc sulfate, sodium sulfite and alkylidene dithiocarbamate, add diethyldithiocarbamate and xanthic acid propylene and terpenic oil in second tank diameter;Composite restrainer and combined capturing and collecting agent are added before the first time of plumbum floatation scans, scans for the second time;First time lead it is selected, composite restrainer and combined capturing and collecting agent are added before second lead is selected and third time lead is selected;The mine tailing of plumbum floatation carries out zinc flotation;Zinc is scanned, scans preceding addition composite restrainer and combined capturing and collecting agent for the second time for the first time;Lime is added before each zinc is selected.The present invention is obtained containing arsenic qualified lead, zinc concentrate product, and lead silver grade and the rate of recovery, Zinc in Zinc Concentrates grade and the rate of recovery in lead concentrate can be improved, without adding toxic articles Cymag or oxidant, the severe contamination to environment is avoided, realizes that clean environment firendly is kept the safety in production.

Description

A kind of complicated beneficiation method containing arsenic lead-zinc sulfide ore
Technical field
The present invention relates to a kind of beneficiation method of lead-zinc sulfide ore, more particularly to a kind of flotation complexity lead-zinc sulfide ore containing arsenic Beneficiation method, belong to sulfide flotation technical field.
Background technology
The main method for the treatment of lead-zinc sulfide ore is beneficiation method at present.Lead-zinc sulfide ore is more to be with galena, zincblende Essential mineral, some lead zinc sulphur ores usually with the fine and close symbiosis such as pyrite, magnetic iron ore, arsenic mineral.Mainly arsenic-containing ores are Mispickel (FeAsS), loellingite (FeAs2), black domeykite etc., they are similar to the formation condition of lead-zinc sulphide minerals, certain A little physicochemical properties are close;So when with collecting agent flotation lead-zinc sulfide ore thing, the arsenic mineral such as mispickel is also usually mixed into essence In ore deposit so that concentrate is exceeded containing arsenic, has a strong impact on matallurgical products quality, and part arsenic can also change into arsenic in pyrometallurgical smelting Change hydrogen, arsenite and organoarsenium compound etc., etching apparatus, pollute air, poison environment.To be obtained in terms of technique of preparing Qualified lead and zinc concentrate product, efficiently separated to strengthen galena and zincblende, arsenic mineral in FLOTATION SEPARATION, in alkalescence Under the conditions of be commonly incorporated into zincblende and arsenic mineral inhibitor, improve its difference with galena floatability, improve separating effect, with this Improve sulphide mineral flotation separative efficiency.Typically it is commonly incorporated into the groups such as substantial amounts of cyanide or oxidant and zinc sulfate, sodium sulfite Close and suppress the mineral such as zincblende, mispickel, the use of this medicine not only loses noble metal gold and silver, the discarded object of ore dressing discharge Can also severe contamination be caused to environment, serious potential safety hazard is there is also to direct labor.
In existing lead-zinc sulfide ore containing arsenic is without cyanogen technique of preparing, mainly with high ph-values under the conditions of, add substantial amounts of suppression Agent lime, zinc sulfate, sodium sulfite, arsenic mineral oxidant and multiple combination collecting agent.For complicated lead-zinc sulfide ore containing arsenic with On cannot realize that lead and zinc concentrate is down to less than 0.3% containing arsenic without cyanogen Mineral separation method, and the application of large quantities of lime can cause ore deposit The problems such as slurry conveyance conduit fouling.
The content of the invention
The purpose of the present invention is that the problem existed for complexity Pb-Zn deposits containing the arsenic separating technology of prior art, with clear Clean environmental protection is produced as basic principle, improves lead zinc and association silver raising recovery rate, while reducing arsenic content in lead and zinc concentrate, improves economical Benefit is target, through studying for a long period of time with after lot of experiments, there is provided a kind of technical feasibility, environmental protection, low-cost separation lead zinc arsenic minerals Thing, the beneficiation method of the complexity of comprehensively recovering valuable metal containing arsenic lead-zinc sulfide ore, the method can not only cancel Cymag or Use of the oxidant in mineral processing production, effectively improves lead zinc recovery, improves the rate of recovery of noble silver, while reducing concentrate Containing arsenic grade, increase Business Economic Benefit, cause Huan Jing wu to contaminate while reducing milltailings discharge, realize clean environment firendly safety Production.
This complicated beneficiation method containing arsenic lead-zinc sulfide ore that the present invention is given, including milling method, in diffeential floatation The application method of middle composite restrainer and the application method of combined capturing and collecting agent.
The milling method is:Raw ore ore grinding to the grade of mineral aggregate granularity -0.075mm after will be broken accounts for whole raw ore 65%-80%.
The application method of the composite restrainer in diffeential floatation includes.
(1)Composite restrainer is added before lead roughing flotation:Lime 1000g/t~1500g/t, zinc sulfate 500g/t~ 1000g/t and sodium sulfite 500 g/t~1000g/t, alkylidene dithiocarbamate 20g/t~40g/t.
(2)Composite restrainer is added before the first time of plumbum floatation scans:Lime 500g/t~800g/t, zinc sulfate 400g/t~500g/t and sodium sulfite 400g/t~500g/t, alkylidene dithiocarbamate 10g/t~20 g/t.
Composite restrainer is added before the scanning for the second time of plumbum floatation:Lime 300g/t~400g/t, zinc sulfate 200g/t ~300g/t, sodium sulfite 200g/t~300g/t, alkylidene dithiocarbamate 5g/t~10g/t.
(3)Lime 200g/t~300g/t, zinc sulfate 200g/t~300g/ is added before the first time of plumbum floatation is selected T, sodium sulfite 200g/t~300g/t, the composite restrainer of alkylidene dithiocarbamate 10g/t~15g/t.
Add lime 100g/t~200g/t before the second of plumbum floatation is selected, zinc sulfate 100g/t~200g/t with The composite restrainer of sodium sulfite 100g/t~200g/t;Added before the third time of plumbum floatation is selected lime 100g/t~ 200g/t。
(4)Lime 1500g/t~2000g/t is added before zinc roughing flotation, the lime 500g/t before zinc is scanned for the first time ~800g/t, lime 300g/t~400g/t is added before scanning for the second time.
The application method of the combined capturing and collecting agent in diffeential floatation includes.
(1)Combined capturing and collecting agent is added before lead roughing flotation:Diethyldithiocarbamate 30g/t~50g/t and xanthic acid propylene 20g/ T~40g/t combined capturing and collecting agents.
(2)Combined capturing and collecting agent is added before the first time of plumbum floatation scans:Diethyldithiocarbamate 15g/t~25g/t, xanthan acid propylene Ester 10g/t~30g/t combined capturing and collecting agents;Combined capturing and collecting agent is added before the scanning for the second time of plumbum floatation:Diethyldithiocarbamate 10g/t~ 20g/t, xanthic acid propylene 10g/t~15g/t combined capturing and collecting agents.
(3)Collecting agent butyl xanthate 30g/t~60g/t, isopropyl xanthogen ethyl formate is added before zinc roughing flotation 20g/t~40g/t combined capturing and collecting agents.
(4)Zinc for the first time scan before add 15~30g/t of butyl xanthate, isopropyl xanthogen ethyl formate 10g/t~ 20g/t combined capturing and collecting agents;Zinc adds butyl xanthate 10g/t~20g/t, isopropyl xanthogen ethyl formate before scanning for the second time 10g/t~20g/t combined capturing and collecting agents.
Wherein g/t refers to the quality of addition medicament in mineral aggregate per ton.
Chats in diffeential floatation is returned as a kind of processing method of chats in proper order, i.e., except the final products concentrate of flotation Outside mine tailing, the intermediate products of output in floatation process, such as cleaner tailings, scavenger concentrate, custom are referred to as chats, by this The method that ore deposit returns to upper level operation from this grade of operation, is that chats is returned in proper order.
This technical scheme that the present invention is used has following characteristics.
1st, the use of combination medicament.
1), in the Pb-Zn separation flotation system that uses in method, by pH regulators lime, zinc sulfate, sulfurous during plumbum floatation Sour sodium, alkylidene dithiocarbamate inhibitor are applied in combination, in different operations using adding method respectively, effectively suppression Zinc pozzuolite mineral processed, wherein alkylidene dithiocarbamate not only have inhibitory action to mispickel, zincblende, while its other side Lead ore and silver mineral also have activation.Because composite restrainer and mispickel act on the hydrophilic surface to be formed, it is set relatively to be difficult to Had an effect with collecting agent, while also more difficult activation.
2), after addition composite restrainer, then be applied in combination using addition diethyldithiocarbamate and xanthic acid propylene collecting agent, can be with The collecting flotation lead minerals and silver mineral of selectivity.When two kinds of collecting agents of diethyldithiocarbamate and xanthic acid propylene are applied in combination, play Acted synergistically between medicament, the selectivity to galena is more preferable, and their adsorbances on galena surface are greater than single collecting Agent, so as to reduce collector dosage, realizes the good separation effect under the conditions of low collector dosage.
2nd, milling method:By the selected grinding particle size -0.075mm grades control of raw ore between 65%~80%.Can make thin The mineral of the embedding cloth of grain obtain good monomer dissociation, improve lead zinc-silver pozzuolite minerals separation effect, improve product quality and recovery Rate.
The technical scheme that the present invention is given is made further explanation below.
The technical scheme that the present invention is given is:This complicated beneficiation method containing arsenic lead-zinc sulfide ore is included grinds ore Ore deposit process and addition floating agent and floatation process, it is characterised in that specific implementation steps are as follows.
(1) by raw ore addition ball mill, ore grinding accounts for 65~80% to -0.075 millimeter, into first tank diameter, control Pulp density processed 33~35%.
(2)Lime 1000g/t~1500g/t (control slurry pH 9~9.5) is added in first tank diameter, sulphur is added Sour zinc 500g/t~1000g/t and sodium sulfite 500g/t~1000g/t, 20~40g/ of alkylidene dithiocarbamate t。
30~50g/t of diethyldithiocarbamate and xanthic acid 20~40g/t of propylene is added in second tank diameter, terpenic oil 30~ 50g/t。
(3)Composite restrainer is added before the first time of plumbum floatation scans:Lime 500g/t~800g/t, zinc sulfate 400g/t~500g/t and sodium sulfite 400 g/t~500g/t, 10 g/t of alkylidene dithiocarbamate~20g/t, Collecting agent diethyldithiocarbamate 15g/t~25g/t, xanthic acid propylene 10g/t~30g/t, 20~30g/t of terpenic oil.
Composite restrainer is added before the scanning for the second time of plumbum floatation:Lime 300g/t~400g/t, zinc sulfate 200g/t ~300g/t, sodium sulfite 200g/t~300g/t, the g/t of alkylidene dithiocarbamate 5~10, collecting agent diethyldithiocarbamate 10g/t~20g/t, xanthic acid propylene 10g/t~15g/t, 10~20g/t of terpenic oil.
(4)Lime 300g/t~400g/t, plus zinc sulfate 200g/t~300g/t, sulfurous are added before lead is selected in first time Sour sodium 200g/t~300g/t, alkylidene dithiocarbamate 10g/t~15g/t.
Lime 200g/t~300g/t, plus zinc sulfate 100g/t~200g/t, sulfurous acid are added before second lead is selected 100 g/t of sodium~200g/t.Lime 100g/t~200g/t is added before third time lead is selected.
(5) mine tailing of plumbum floatation carries out zinc flotation, and first tank diameter adds lime 1500g/t~2000g/ before zinc roughing t(Control slurry pH 11~11.5), copper sulphate 100g/t~300g/t.
Second tank diameter adds butyl xanthate 30g/t~60g/t, 20 g/t of isopropyl xanthogen ethyl formate~40g/ T, terpenic oil 30g/t~50g/t.
(6)Zinc scans addition lime 500g/t~800g/t, copper sulphate 50g/t~150g/t, butyl xanthate 5g/ for the first time T~30g/t, isopropyl xanthogen ethyl formate 10g/t~20 g/t, terpenic oil 10g/t~30g/t.
Addition lime 300g/t~400g/t, butyl xanthate 10g/t~20g/t, isopropyl xanthan acid first are scanned for the second time 10 g/t of acetoacetic ester~20g/t, terpenic oil 5g/t~20g/t.
(7)Lime 100g/t~300g/t is added before each zinc is selected.
Compared with prior art, the beneficial effects of the present invention are.
(1)Using the complicated beneficiation method containing arsenic Pb-Zn deposits of flotation of the invention, make the valuable unit in complex refractory ore Element can obtain effectively sorting separation, obtain containing the qualified lead and zinc concentrate product of arsenic.
(2)Compared with prior art, lead grade improves 1.26~3.11 percentage points in the lead concentrate that the present invention is obtained, Silver-colored grade improves 57.87~320.34g/t, and lead recovery improves 0.97~3.32 percentage point, and silver raising recovery rate improves 3.75~13.81 percentage points;Zinc in Zinc Concentrates grade improves 1.08~2.59 percentage points, and zinc recovery improves 1.66 ~6.19 percentage points.
(3)Without adding toxic articles Cymag or oxidant in ore-dressing technique, it is to avoid to the severe contamination of environment, realize Clean environment firendly is kept the safety in production.
(4)Flotation operation is carried out under not high pH value condition, lime consumption is reduced, ore pulp delivery duct knot is reduced Dirty the problems such as.
Beneficiation method of the invention solves the problems, such as the ore dressing of the complicated sorting of Pb-Zn deposits containing arsenic, is a kind of effective cleaning ring The beneficiation method for ensuring safety, with good application value.
Brief description of the drawings
Fig. 1 is the complicated beneficiation method flow chart containing arsenic Pb-Zn deposits of the invention.
Specific embodiment
Technical scheme is described in detail with reference to instantiation, but the present invention is not limited to this.
Embodiment 1.
Major metal mineral are galena, zincblende, pyrite, mispickel, its oxide in certain lead zinc-silver polymetallic ore It is less.The embedding cloth relation that Gold in Ores belongs between mineral is complex, and ore is more with bulk, compact massive, lumps and dip-dye Shape output.Galena, zincblende contaminate granularity based on the embedding cloth of coarse grain, and the two embedding cloth Relationship Comparison closely, has parcel mutually existing As.Zincblende symbiosis together with galena, pyrite, mispickel, have on a small quantity in the residual nuclear morphology of broken spot be wrapped in block galena it In, or in embedding cloth together with acinous, star spot shape and galena and a small amount of other sulfide in gangue.The mispickel contained in ore And crystallize preferably, to be handed over zincblende and pyrite, some mispickel are distributed in zincblende and galena, the crack of pyrite.
Associated silver mineral species are more in ore, mainly there is dark red silver ore, miargyrite, brightness fizelyite, argentite, silver Tetrahedrite, native silver.Silver mineral is embedding in ore, and to deposit relation complex.Recyclable element is lead, zinc, silver in ore.Ore Middle lead grade is 2.87%, and zinc grade is 3.74%, silver-colored grade is 259.24g/t, arsenic grade is 0.811%.The oxygen of lead in ore Rate is 4.16%, and the oxygenation efficiency of zinc is 5.63%.
The example is to pass sequentially through following steps composition.
(1) raw ore after will be broken is added in ball mill, and ore grinding accounts for 73% to -0.075 millimeter, into first stirring Groove, controls pulp density 33~35%.
(2)Lime 1500g/t is added in first tank diameter, slurry pH 9~9.5 is controlled, zinc sulfate 800g/t is added With sodium sulfite 800g/t, alkylidene dithiocarbamate 25g/t.Second tank diameter add diethyldithiocarbamate 40g/t and Xanthic acid propylene 30g/t, terpenic oil 35g/t.
(3)Composite restrainer is added before the first time of plumbum floatation scans:Lime 600g/t, zinc sulfate 400g/t and sulfurous Sour sodium 400g/t, alkylidene dithiocarbamate 15g/t, collecting agent diethyldithiocarbamate 20g/t, xanthic acid propylene 20g/t, pine Alcohol oil 20g/t;Composite restrainer is added before the scanning for the second time of plumbum floatation:Lime 300g/t, zinc sulfate 200g/t, sulfurous acid Sodium 200g/t, alkylidene dithiocarbamate 10g/t, collecting agent diethyldithiocarbamate 10g/t, xanthic acid propylene 15g/t, pine camphor Oily 15g/t.
(4)Lime 300g/t, plus zinc sulfate 300g/t, sodium sulfite 300g/t, alkylene are added before lead is selected in first time Base dithiocarbamate 10g/t.Lime 200g/t, plus zinc sulfate 200g/t, sulfurous acid are added before second lead is selected Sodium 200g/t.Lime 100g/t is added before third time lead is selected.
(5) mine tailing of plumbum floatation carries out zinc flotation, and first tank diameter adds the g/t of lime 1500 before zinc roughing(Control ore deposit Slurry pH value 11~11.5), copper sulphate 200g/t, second tank diameter addition butyl xanthate 50g/t, isopropyl xanthan acid formic acid Ethyl ester 40g/t, terpenic oil 40g/t.
(6)Zinc scans addition lime 500g/t, copper sulphate 100g/t, butyl xanthate 30g/t, isopropyl xanthan acid for the first time Ethyl formate 20g/t, terpenic oil 20g/t.Addition lime 300g/t, butyl xanthate 20g/t, isopropyl xanthan acid are scanned for the second time Ethyl formate 20 g/t, terpenic oil 15g/t.
(7)Lime 300g/t is added before zinc is selected in first time, the addition lime 200g/t second zinc is selected before, the Lime 100g/t is added before three times zinc is selected.Each essence, scan chats and sequentially return to last layer respectively.
Contrast prior art, its result of the test is shown in Table 1.Method for floating of the invention compared with prior art, the lead of acquisition Lead grade improves 3.11 percentage points in concentrate, and silver-colored grade improves 320.34g/t, and lead recovery improves 3.32 percentages Point, silver raising recovery rate improves 3.75 percentage points;Zinc in Zinc Concentrates grade improves 1.66 percentage points, and Zinc in Zinc Concentrates is reclaimed Rate improves 1.66 percentage points, and arsenic grade is all down to less than 0.4% in lead and zinc concentrate.
The prior art of table 1 is contrasted with the technology of the present invention index(%).
Embodiment 2.
Metalliferous mineral species is more in certain lead-zinc ore, wherein major metal mineral be galena, pyrite, zincblende and Mispickel, other metalliferous mineral contents are less;Nonmetallic mineral is mainly quartz and kaolin.It is main reclaim element be lead, zinc, Silver.
In ore galena and zincblende be in the embedding cloth of coarse grain, galena in ore with xenomorphic granular, it is irregular and Its aggregate is distributed in gangue mineral, in impregnation structure.Pyrite, mispickel and zincblende being handed over galena, in explanation more Corrosion structure.A small amount of pyrite particle is included in galena, galena is cementing along mispickel fracture filling, in vein structure, Galena is with acinous simultaneously and irregular etc. is included in pyrite, malicious ore deposit and zincblende.It can be seen that galena and pyrite, Mispickel and zincblende are in close relations.Silver mineral is native silver, is mainly distributed in gangue mineral and gangue mineral and galena, sudden strain of a muscle In zinc ore crack.
Zincblende is distributed in gangue mineral in ore with xenomorphic granular and its aggregate, and with galena, pyrite, Mispickel etc. constitutes block structure.Zincblende is the closest with chalcopyrite relation, and chalcopyrite is more to be distributed in a drop-wise, fine streaks In zincblende, the two constitutes the milkiness shape structure that solid solution is separate.Zincblende explanation pyrite, mispickel phenomenon are common, while Galena, pyrite and mispickel particle are included in zincblende particle.
Mispickel is more in ore to be distributed in gangue mineral with euhedral crytal, hypautomorphic crystal and xenomorphic granular, in disseminated structure Make.Mispickel Particle Breakage goes through evil, and crack is more, more by galena and zincblende Filling Cementation, or even parcel.The yellow iron of mispickel explanation Ore deposit, and cementing pyrite particle.Recyclable valuable mineral is mainly galena, zincblende and native silver in ore.In ore Lead grade is 5.75%, and zinc grade is 3.42%, silver-colored grade is 102.73g/t, arsenic grade is 1.25%.The oxygenation efficiency of lead in ore It is 11.58%, the oxygenation efficiency of zinc is 7.87%.
The example is to pass sequentially through following steps composition.
(1) by raw ore addition ball mill, ore grinding accounts for 80% to -0.075 millimeter, into first tank diameter, controls ore deposit Slurry concentration 33~35%.
(2)Lime 1500g/t is added in first tank diameter, slurry pH 9~9.5 is controlled, zinc sulfate 1000g/ is added T and sodium sulfite 1000g/t, alkylidene dithiocarbamate 40g/t.Diethyldithiocarbamate 50g/t is added in second tank diameter With xanthic acid propylene 40g/t, terpenic oil 50g/t.
(3)Composite restrainer is added before the first time of plumbum floatation scans:Lime 800g/t, zinc sulfate 500g/t and sulfurous Sour sodium 500g/t, alkylidene dithiocarbamate 20g/t, collecting agent diethyldithiocarbamate 25g/t, xanthic acid propylene 30g/t, pine Alcohol oil 30g/t;Composite restrainer is added before the scanning for the second time of plumbum floatation:Lime 400g/t, zinc sulfate 300g/t, sulfurous acid Sodium 300g/t, alkylidene dithiocarbamate 10g/t, collecting agent diethyldithiocarbamate 20g/t, xanthic acid propylene 15g/t, pine camphor Oily 20g/t.
(4)Lime 300g/t, plus zinc sulfate 300g/t, sodium sulfite 300g/t, alkylene are added before lead is selected in first time Base dithiocarbamate 15g/t.Lime 200g/t, plus zinc sulfate 200g/t, sulfurous acid are added before second lead is selected Sodium 200g/t.Lime 200g/t is added before third time lead is selected.
(5) mine tailing of plumbum floatation carries out zinc flotation, and first tank diameter adds the g/t of lime 1500 before zinc roughing(Control ore deposit Slurry pH value 11~11.5), copper sulphate 200g/t, second tank diameter addition butyl xanthate 50g/t, isopropyl xanthan acid formic acid Ethyl ester 30g/t, terpenic oil 40g/t.
(6)Zinc scans addition lime 500g/t, copper sulphate 100g/t, butyl xanthate 30g/t, isopropyl xanthan acid for the first time Ethyl formate 20 g/t, terpenic oil 30g/t.Addition lime 300g/t, butyl xanthate 10g/t, isopropyl xanthan are scanned for the second time Sour Ethyl formate 20 g/t, terpenic oil 20g/t.
(7)Lime 300g/t is added before zinc is selected in first time, the addition lime 200g/t second zinc is selected before, the Lime 100g/t is added before three times zinc is selected.Each essence, scan chats and sequentially return to last layer respectively.
Contrast prior art, its result of the test is shown in Table 2.Method for floating of the invention compared with prior art, the lead of acquisition Lead grade improves 2.17 percentage points in concentrate, and silver-colored grade improves 187.22g/t, and lead recovery improves 1.33 percentages Point, silver raising recovery rate improves 13.81 percentage points;Zinc in Zinc Concentrates grade improves 1.08 percentage points, and zinc recovery is improved 6.19 percentage points, arsenic grade is all down to less than 0.4% in lead and zinc concentrate.
The prior art of table 2 is contrasted with the technology of the present invention index(%).
Embodiment 3.
Metalliferous mineral is pyrite, zincblende, galena, mispickel, magnetic iron ore, containing a small amount of for lead in certain lead-zinc ore Alum, chalcopyrite etc.;Gangue mineral mainly has diopside, quartz, wollastonite and fluorite, actinolite, carbonate etc., separately there is part Shale mineral.
Galena is main with xenomorphic granular and its aggregate output in ore, based on large or fine granule, a small amount of particulate person It is distributed in gangue mineral and its gangue mineral particulate interspaces and crack.Galena and zincblende, pyrite, mispickel relation be compared with Closely, the former hands over three below, and part is wrapped up mutually, but particle is relatively thick;Galena is subjected to oxidation ratio in ore Zincblende is strong, sees time pig copper orchid, and sardinianite explanation galena forms film-form border ring construction.Silver From Ore mineral have brightness Silver ore and native silver, galena are the main carriers mineral of argentite, and native silver is mainly distributed on gangue and galena, zincblende In crack.
Zincblende is more in ore to be distributed in gangue mineral more with xenomorphic granular and its aggregate output, in thickness grain Impregnation structure;Stone ore composition granule is clearance filled cementing along the pulse for particulate zincblende, or even parcel gangue mineral;Zincblende is by square lead Ore deposit explanation phenomenon is wrapped up mutually substantially, or even again;Zincblende is more close with galena relation, and galena partial particulate is thin in addition It is small, cause the two to be difficult complete monomer dissociation.Seeing has a small amount of zincblende to have Filling Cementation phenomenon along mispickel intergranular.
Mispickel is more with euhedral crytal, hypautomorphic crystal and irregular granular output in ore, is mainly distributed on gangue mineral and splits In gap, small part is distributed in galena and zincblende.
Recyclable valuable mineral is mainly galena and zincblende and silver mineral in ore.Lead grade is in ore 4.41%, zinc grade is 5.62%, and silver-colored grade is 50.19g/t, and arsenic grade is 0.885%.The oxygenation efficiency of lead is in ore 14.02%, the oxygenation efficiency of zinc is 5.76%.
The example is to pass sequentially through following steps composition.
(1) by raw ore addition ball mill, ore grinding accounts for 65% to -0.075 millimeter, into first tank diameter, controls ore deposit Slurry concentration 33~35%.
(2)Lime 1500g/t is added in first tank diameter, slurry pH 9~9.5 is controlled, zinc sulfate 1000g/ is added T and sodium sulfite 1000g/t, alkylidene dithiocarbamate 20g/t.Diethyldithiocarbamate 50g/t is added in second tank diameter With xanthic acid propylene 50g/t, terpenic oil 50g/t.
(3)Composite restrainer is added before the first time of plumbum floatation scans:Lime 800g/t, zinc sulfate 500g/t and sulfurous Sour sodium 500g/t, the g/t of alkylidene dithiocarbamate 15, collecting agent diethyldithiocarbamate 25g/t, xanthic acid propylene 30g/t, Terpenic oil 30g/t;Composite restrainer is added before the scanning for the second time of plumbum floatation:Lime 400g/t, zinc sulfate 300g/t, sulfurous Sour sodium 300g/t, the g/t of alkylidene dithiocarbamate 10, collecting agent diethyldithiocarbamate 15g/t, xanthic acid propylene 15g/t, Terpenic oil 20g/t.
(4)Lime 300g/t, plus zinc sulfate 300g/t, sodium sulfite 300g/t, alkylene are added before lead is selected in first time Base dithiocarbamate 10g/t.Lime 200g/t, plus zinc sulfate 200g/t, sulfurous acid are added before second lead is selected Sodium 200g/t.Lime 100g/t is added before third time lead is selected.
(5) mine tailing of plumbum floatation carries out zinc flotation, and first tank diameter adds the g/t of lime 2000 before zinc roughing(Control ore deposit Slurry pH value 11~11.5), copper sulphate 300g/t, second tank diameter addition butyl xanthate 60g/t, isopropyl xanthan acid formic acid Ethyl ester 40g/t, terpenic oil 50g/t.
(6)Zinc scans addition lime 800g/t, copper sulphate 150g/t, butyl xanthate 30g/t, isopropyl xanthan acid for the first time Ethyl formate 20 g/t, terpenic oil 30g/t.Addition lime 400g/t, butyl xanthate 10g/t, isopropyl xanthan are scanned for the second time Sour Ethyl formate 20 g/t, terpenic oil 10g/t.
(7)Lime 300g/t is added before zinc is selected in first time, the addition lime 200g/t second zinc is selected before, the Lime 100g/t is added before three times zinc is selected.Each essence, scan chats and sequentially return to last layer respectively.
Contrast prior art, its result of the test is shown in Table 3.Method for floating of the invention compared with prior art, the lead of acquisition Lead grade improves 1.97 percentage points in concentrate, and silver-colored grade improves 57.87g/t, and lead recovery improves 2.25 percentages Point, silver raising recovery rate improves 6.32 percentage points, and Zinc in Zinc Concentrates grade improves 2.57 percentage points, and zinc recovery improves 2.21 percentage points, arsenic grade is down to less than 0.4% respectively in lead and zinc concentrate.
The prior art of table 3 is contrasted with the technology of the present invention index(%).
Embodiment 4.
Experiment lead-zinc ore used belongs to difficulty and selects multi-metal sulfide.The mineral composition of ore is more complicated, and metalliferous mineral has Predominantly zincblende, galena, pyrite, mispickel, and have micro covellite, vitreous copper, argentite, dark red silver ore and nature Silver;Nonmetallic mineral is mainly feldspar, quartz, kaolin, sericite etc..
Galena is more with xenomorphic granular, veiny output in ore, and the former is mainly distributed in gangue mineral, and the latter is main Along pyrite and gangue mineral crack output, vein structure is formed.Galena is more multiple with the embedding cloth relation of other metalliferous minerals It is miscellaneous, with pyrite and mispickel more closely, not only galena Filling Cementation pyrite and mispickel particle, also wrap up pyrite and The phenomenon of mispickel, conversely wraps up galena particle again in pyrite and mispickel;Galena is the main carriers mineral of silver, wherein Include argentite and dark red silver ore fine particle.Native silver is mainly distributed in gangue crack.
Zincblende is main with granular, irregular and veiny output in ore, and is distributed in gangue mineral.Zincblende Very close with the embedding cloth relation of other metalliferous minerals, zincblende hands over corrosion zincblende more with galena, and wraps up zincblende Grain;Its granularity is relatively fine, opposite to see zincblende parcel galena particle again;The embedding cloth relation of zincblende and pyrite is slightly Simply, predominantly zincblende with granular, irregular along pyrite crack and particulate interspaces Filling Cementation, and wrap up pyrite Grain, but it is very not universal.The two many formation interstitial structure;Zincblende is more tight with the embedding cloth relation of mispickel, only sees zincblende There is Filling Cementation phenomenon along mispickel intergranular, and wrap up mispickel particle.
Mispickel is more with euhedral crytal in ore(Rhombohedron), hypautomorphic crystal and irregular granular output, be distributed in gangue more In mineral, small part is distributed in galena and zincblende;Mispickel is more close with zincblende, the embedding cloth relation of galena, with Huang Iron ore relation is taken second place.
Recyclable valuable mineral is mainly galena and zincblende and silver mineral in ore.Lead grade is in ore 1.21%, zinc grade is 2.27%, and silver-colored grade is 18.51 g/t, and arsenic grade is 1.22%.The oxygenation efficiency of lead is in ore 9.48%, the oxygenation efficiency of zinc is 7.54%.
The example is to pass sequentially through following steps composition.
(1) by raw ore addition ball mill, ore grinding accounts for 70% to -0.075 millimeter, into first tank diameter, controls ore deposit Slurry concentration 33~35%.
(2)Lime 1000g/t is added in first tank diameter, slurry pH 9~9.5 is controlled, zinc sulfate 500g/t is added With sodium sulfite 500g/t, alkylidene dithiocarbamate 30g/t.Second tank diameter add diethyldithiocarbamate 30g/t and Xanthic acid propylene 20g/t, terpenic oil 30g/t.
(3)Composite restrainer is added before the first time of plumbum floatation scans:Lime 500g/t, zinc sulfate 400g/t and sulfurous Sour sodium 400g/t, alkylidene dithiocarbamate 15g/t, collecting agent diethyldithiocarbamate 15g/t, xanthic acid propylene 10g/t, pine Alcohol oil 20g/t;Composite restrainer is added before the scanning for the second time of plumbum floatation:Lime 300g/t, zinc sulfate 200g/t, sulfurous acid Sodium 200g/t, alkylidene dithiocarbamate 10g/t, collecting agent diethyldithiocarbamate 10g/t, xanthic acid propylene 10g/t, pine camphor Oily 10g/t.
(4)Lime 200g/t, plus zinc sulfate 200g/t, sodium sulfite 200g/t, alkylene are added before lead is selected in first time Base dithiocarbamate 10g/t.Lime 200g/t, plus zinc sulfate 100g/t, sulfurous acid are added before second lead is selected Sodium 100g/t.Lime 100g/t is added before third time lead is selected.
(5) mine tailing of plumbum floatation carries out zinc flotation, and first tank diameter adds the g/t of lime 1000 before zinc roughing(Control ore deposit Slurry pH value 11~11.5), copper sulphate 100g/t, second tank diameter addition butyl xanthate 30g/t, isopropyl xanthan acid formic acid Ethyl ester 20g/t, terpenic oil 30g/t.
(6)Zinc scans addition lime 500g/t, copper sulphate 50g/t, butyl xanthate 15g/t, isopropyl xanthan acid for the first time Ethyl formate 10g/t, terpenic oil 10g/t.Addition lime 300g/t, butyl xanthate 10g/t, isopropyl xanthan acid are scanned for the second time Ethyl formate 10g/t, terpenic oil 10g/t.
(7)Lime 200g/t is added before zinc is selected in first time, the addition lime 100g/t second zinc is selected before, the Lime 100g/t is added before three times zinc is selected.Each essence, scan chats and sequentially return to last layer respectively.
Contrast prior art, its result of the test is shown in Table 4.Method for floating of the invention compared with prior art, the lead of acquisition Lead grade improves 1.26 percentage points in concentrate, and silver-colored grade improves 93.10g/t, and lead recovery improves 0.97 percentage Point, silver raising recovery rate improves 9.48 percentage points;Zinc in Zinc Concentrates grade improves 2.59 percentage points, and zinc recovery improves 3.03 percentage points, arsenic grade is down to less than 0.4% respectively in lead and zinc concentrate.
The prior art of table 4 is contrasted with the technology of the present invention index(%).
Above-mentioned 4 embodiments explanation, in the present invention, the important advantage of this method for floating is that this method for floating can It is to obtain the lead zinc-silver rate of recovery higher than prior art and qualified containing arsenic grade in lead and zinc concentrate.
Above-mentioned 4 embodiments clearly demonstrate the superiority of the method for the invention, silver-colored due in the method application It is enriched with by a relatively large margin, and is significantly enhanced silver raising recovery rate in lead concentrate, so sharp again to obtain the resource of commercial use Greatly increased with value, it is possible to produce its significant superiority economically, this is one new prominent in terms of flotation technology It is broken.

Claims (3)

1. a kind of complexity contains the beneficiation method of arsenic lead-zinc sulfide ore, including by ore grinding process and adds floating agent and flotation Process, it is characterised in that its beneficiation method includes following steps:
(1)By in raw ore addition ball mill, ore grinding accounts for 65~80% to -0.075 millimeter, into first tank diameter, controls ore deposit Slurry concentration 33~35%;
(2)Lime 1000g/t~1500g/t is added in first tank diameter, slurry pH 9~9.5 is controlled, zinc sulfate is added 500g/t~1000g/t and sodium sulfite 500g/t~1000g/t, alkylidene dithiocarbamate 20g/t~40g/t;
Diethyldithiocarbamate 30g/t~50g/t and xanthic acid propylene 20g/t~40g/t, terpenic oil 30g/ are added in second tank diameter T~50g/t;
(3)Composite restrainer is added before the first time of plumbum floatation scans:Lime 500g/t~800g/t, zinc sulfate 400g/t~ 500g/t and sodium sulfite 400g/t~500g/t, alkylidene dithiocarbamate 10g/t~20g/t, collecting agent second sulphur Nitrogen 15g/t~25g/t, xanthic acid propylene 10g/t~30g/t, terpenic oil 20g/t~30g/t;
(4)Composite restrainer is added before the scanning for the second time of plumbum floatation:Lime 300g/t~400g/t, zinc sulfate 200g/t~ 300g/t, sodium sulfite 200g/t~300g/t, alkylidene dithiocarbamate 5g/t~10g/t, collecting agent diethyldithiocarbamate 10g/t~20g/t, xanthic acid propylene 10g/t~15g/t, terpenic oil 10g/t~20g/t;
Lime 300g/t~400g/t, plus zinc sulfate 200g/t~300g/t, sodium sulfite are added before lead is selected in first time 200g/t~300g/t, alkylidene dithiocarbamate 10g/t~15g/t;
Lime 200g/t~300g/t, plus zinc sulfate 100g/t~200g/t, sodium sulfite are added before second lead is selected 100g/t~200g/t, adds lime 100g/t~200g/t before third time lead is selected;
(5)The mine tailing of plumbum floatation carries out zinc flotation, and first tank diameter adds lime 1500g/t~2000 g/t before zinc roughing, Control slurry pH 11~11.5, copper sulphate 100g/t~300g/t, second tank diameter add butyl xanthate 30g/t~ 60g/t, isopropyl xanthogen ethyl formate 20g/t~40g/t, terpenic oil 30g/t~50g/t;
(6)Zinc is scanned add lime 500g/t~800g/t for the first time, and copper sulphate 50g/t~150g/t, butyl xanthate 5g/t~ 30g/t, isopropyl xanthogen ethyl formate 10g/t~20g/t, terpenic oil 10g/t~30g/t, scan addition lime for the second time 300g/t~400g/t, butyl xanthate 10g/t~20g/t, isopropyl xanthogen ethyl formate 10g/t~20g/t, terpenic oil 5g/t~20g/t;
(7)Lime 100g/t~300g/t is added before each zinc is selected, wherein each essence, scanning chats and sequentially returning to respectively One layer.
2. complexity contains the beneficiation method of arsenic lead-zinc sulfide ore according to claim 1, it is characterised in that preferred complicated containing arsenic The beneficiation method of lead-zinc sulfide ore is:
(1)Raw ore after will be broken is added in ball mill, and ore grinding accounts for 73% to -0.075 millimeter, into first tank diameter, control Pulp density processed 33~35%;
(2)Add lime 1500g/t in first tank diameter, control slurry pH 9~9.5, add zinc sulfate 800g/t and Sodium sulfite 800g/t, alkylidene dithiocarbamate 25g/t, diethyldithiocarbamate 40g/t and Huang are added in second tank diameter Ortho acid propylene 30g/t, terpenic oil 35g/t;
(3)Composite restrainer is added before the first time of plumbum floatation scans:Lime 600g/t, zinc sulfate 400g/t and sodium sulfite 400g/t, alkylidene dithiocarbamate 15g/t, collecting agent diethyldithiocarbamate 20g/t, xanthic acid propylene 20g/t, terpenic oil 20g/t;Composite restrainer is added before the scanning for the second time of plumbum floatation:Lime 300g/t, zinc sulfate 200g/t, sodium sulfite 200g/t, alkylidene dithiocarbamate 10g/t, collecting agent diethyldithiocarbamate 10g/t, xanthic acid propylene 15g/t, terpenic oil 15g/t;
(4)Lime 300g/t, plus zinc sulfate 300g/t, sodium sulfite 300g/t, alkylidene two are added before lead is selected in first time Thiocarbamate 10g/t, adds lime 200g/t, plus zinc sulfate 200g/t, sodium sulfite before second lead is selected 200g/t, adds lime 100g/t before third time lead is selected;
(5)The mine tailing of plumbum floatation carries out zinc flotation, and first tank diameter adds the g/t of lime 1500, control ore pulp p before zinc roughing H values 11~11.5, copper sulphate 200g/t, second tank diameter adds butyl xanthate 50g/t, isopropyl xanthogen ethyl formate 40g/t, terpenic oil 40g/t;
(6)Zinc scans addition lime 500g/t, copper sulphate 100g/t, butyl xanthate 30g/t, isopropyl xanthan acid formic acid for the first time Ethyl ester 20g/t, terpenic oil 20g/t, scan addition lime 300g/t, butyl xanthate 20g/t, isopropyl xanthan acid formic acid for the second time Ethyl ester 20 g/t, terpenic oil 15g/t;
(7)Lime 300g/t is added before zinc is selected in first time, lime 200g/t is added before second zinc is selected, in third time Add lime 100g/t before zinc is selected, each essence, scan chats and sequentially return to last layer respectively.
3. complexity contains the beneficiation method of arsenic lead-zinc sulfide ore according to claim 1, it is characterised in that preferred complicated containing arsenic The beneficiation method of lead-zinc sulfide ore is:
(1)By in raw ore addition ball mill, ore grinding accounts for 80% to -0.075 millimeter, and into first tank diameter, control ore pulp is dense Degree 33~35%;
(2)Add lime 1500g/t in first tank diameter, control slurry pH 9~9.5, add zinc sulfate 1000g/t and Sodium sulfite 1000g/t, alkylidene dithiocarbamate 40g/t, diethyldithiocarbamate 50g/t and Huang are added in second tank diameter Ortho acid propylene 40g/t, terpenic oil 50g/t;
(3)Composite restrainer is added before the first time of plumbum floatation scans:Lime 800g/t, zinc sulfate 500g/t and sodium sulfite 500g/t, alkylidene dithiocarbamate 20g/t, collecting agent diethyldithiocarbamate 25g/t, xanthic acid propylene 30g/t, terpenic oil 30g/t;Composite restrainer is added before the scanning for the second time of plumbum floatation:Lime 400g/t, zinc sulfate 300g/t, sodium sulfite 300g/t, alkylidene dithiocarbamate 10g/t, collecting agent diethyldithiocarbamate 20g/t, xanthic acid propylene 15g/t, terpenic oil 20g/t;
(4)Lime 300g/t, plus zinc sulfate 300g/t, sodium sulfite 300g/t, alkylidene two are added before lead is selected in first time Thiocarbamate 15g/t, adds lime 200g/t, plus zinc sulfate 200g/t, sodium sulfite before second lead is selected 200g/t, adds lime 200g/t before third time lead is selected;
(5)The mine tailing of plumbum floatation carries out zinc flotation, and first tank diameter adds the g/t of lime 1500, control ore pulp p before zinc roughing H values 11~11.5, copper sulphate 200g/t, second tank diameter adds butyl xanthate 50g/t, isopropyl xanthogen ethyl formate 30g/t, terpenic oil 40g/t;
(6)Zinc scans addition lime 500g/t, copper sulphate 100g/t, butyl xanthate 30g/t, isopropyl xanthan acid formic acid for the first time Ethyl ester 20 g/t, terpenic oil 30g/t, scan addition lime 300g/t, butyl xanthate 10g/t, isopropyl xanthan acid first for the second time Acetoacetic ester 20 g/t, terpenic oil 20g/t;
(7)Lime 300g/t is added before zinc is selected in first time, lime 200g/t is added before second zinc is selected, in third time Add lime 100g/t before zinc is selected, each essence, scan chats and sequentially return to last layer respectively.
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