CN102240600A - Method for separating and recovering sulfur and arsenic from sulfur and arsenic containing materials - Google Patents
Method for separating and recovering sulfur and arsenic from sulfur and arsenic containing materials Download PDFInfo
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- CN102240600A CN102240600A CN2010105822466A CN201010582246A CN102240600A CN 102240600 A CN102240600 A CN 102240600A CN 2010105822466 A CN2010105822466 A CN 2010105822466A CN 201010582246 A CN201010582246 A CN 201010582246A CN 102240600 A CN102240600 A CN 102240600A
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Abstract
The invention relates to a method for separating and recovering sulfur and arsenic from sulfur and arsenic containing materials, comprising the following steps of: firstly inhibiting arsenopyrite and pyrrhotite by adopting an inhibitor to obtain sulfur ores a mainly containing pyrites through floatation; and then separating the pyrrhotite and the arsenopyrite from flotation tailings by adopting magnetic separation so as to obtain arsenic ores and sulfur ores b mainly containing the pyrrhotite. Compared with the prior art, the method provided by the invention has the advantages of simple process, effectiveness for separation and recovery of the sulfur and the arsenic, good economic benefit and higher popularization value.
Description
Technical field
The present invention relates to the mineral manufacture field, be meant a kind of method that reclaims sulphur, arsenic of from sulfur-bearing, arsenic material, separating especially.
Background technology
Normal association mispickel in China's non-ferrous metal deposit (tungsten, tin, copper, lead, zinc, antimony, mercury etc.) and pyrite, the gold mineral deposit, be more common in high temperature and mesothermal deposit greatly, normal and chalcopyrite, pyrite, magnetic iron ore sulfides and the close symbiosis of noble metal gold, silver.
Though the reserves of arsenic are abundant, in industry such as metallurgical, semiconductor and light associated materials and medicine, agricultural, important use is arranged, the recovery of present association arsenic is very limited.Association in the metalliferous deposit and the arsenic that effectively do not separated are the objectionable impurities in process and the product behind the various concentrate, and high mispickel is when relieving haperacidity, and arsenic can make catalyst poison, and generates the arsenic oxide arsenoxide crystallization, and conversion ratio is descended, and blocking pipe, causes the cleaning difficulty; The arsenic acid that produces is serious to equipment corrosion, and the arsenic of volatilization also makes the people poison easily; And the mine tailing of nonferrous metals ore after ore dressing of those and mispickel association often contains a large amount of arsenic-containing ores, and it is when stacking, and autoxidation can take place arsenic-containing ores, makes arsenic enter water body and soil, contaminated environment.Therefore, mispickel and metal sulfide mineral separate and comprehensive recycling becomes the important topic of mineral processing skill always, and the most representative be mispickel and contain separating of sulfur mineral.
Mispickel belongs to pyrite class mineral.Auger spectroscopy studies show that, when breaking, mispickel has (FeS) and (AsS) two kinds of bondings, (FeS) is similar with (FeS) of sulfur-bearing mineral surfaces such as pyrite, magnetic iron ore, when the stressed fracture of surperficial Fe-S key, its result is similar to sulfur-bearing mineral surfaces Fe-S bond fissions such as pyrite, magnetic iron ore.Do the time spent when them and xanthate class collecting agent, the entity that plays the collecting effect all is a double xanthate.Therefore, the similitude of this crystal structure and surface characteristic has caused close flotation macroscopic property, is that pyrite, magnetic iron ore etc. contain the main cause that sulfur mineral and mispickel are difficult to sorting.
Mainly adopt FLOTATION SEPARATION for mispickel at present with containing separating of sulfur mineral, the method that existing mispickel separates with the sulfur-bearing mineral floating can reduce following 2 kinds:
(1) ore pulp heating method: this method is a nineteen sixty-eight Deutsche Bundespatent technology, the flotation pulp temperature is brought up to more than 40 ℃, sized mixing in alkalescence (pH11) medium, mispickel is suppressed because of oxidation, flotation pyrite, magnetic iron ore etc. contain sulfur mineral, thereby realize that sulphur arsenic separates.
(2) oxidant method: this method is a method in common comparatively, mainly is by oxygenation in ore pulp (or air) or adds oxidant (as H
2O
2, MnO
2, bleaching powder, perchlorate, KMnO
4, K
2Cr
2O
7, K
2S
2O
3Deng) come the oxidation mispickel, it is suppressed, flotation pyrite, magnetic iron ore etc. contain sulfur mineral, thereby realize that sulphur arsenic separates.
And also there is significant disadvantages in above 2 kinds of methods, the slurry temperature that the ore pulp heating method is had relatively high expectations, and also it is chronic to size mixing, the operating cost height, and high temperature makes work under bad environment; The oxidant method is because oxidant simultaneously also acts on other floating agent, thereby makes floatation process be difficult to operation and control.Simultaneously because each place of production contains the floatability of sulfur mineral and mispickel also there are differences, therefore, existing method for floating and fail effectively with mispickel with contain sulfur mineral and separate completely and reclaim.
Summary of the invention
Main purpose of the present invention is to overcome the shortcoming of sulfur-bearing in the prior art, arsenic mineral separation difficulty, and a kind of method that reclaims sulphur, arsenic of effectively separating from sulfur-bearing, arsenic material is provided.
The sulphur that this method is separated, the material of arsenic mineral are mainly the mine tailing and the sulphur arsenic bulk concentrate of nonferrous metal mine, arsenic-containing ores is a mispickel in the material, to contain sulfur mineral be pyrite, magnetic iron ore, and these 3 kinds of mineral are close symbiosis in becoming the ore deposit process, also more in distributed in nature, therefore, have more intense representativeness, make this method have stronger adaptability.The essential mineral of sulfur-bearing, arsenic is pyrite, magnetic iron ore and mispickel in the material, general sulfur-bearing 20～40%, contain arsenic 3～7%.
The present invention adopts following technical scheme:
A kind of method that reclaims sulphur, arsenic of separating from sulfur-bearing, arsenic material adopts inhibitor that mispickel and magnetic iron ore are suppressed earlier, and obtaining pyrite by flotation is main sulphur ore deposit a; Adopt magnetic separation to separate magnetic iron ore and mispickel to flotation tailing again, obtain sulphur ore deposit b and arsenic minerals based on magnetic iron ore.
The inventive method separate sulfur, arsenic mineral adopt floating-magnetic combined process flow that 3 kinds of mineral are effectively separated mainly based on 3 kinds of mineral floatability differences and the physical property difference of self.Pyritous floatability is best in 3 kinds of mineral, and employing inhibition effect inhibitor preferably suppresses mispickel and magnetic iron ore, can effectively floatingly select pyrite; And magnetic iron ore has weak magnetic, and mispickel does not have magnetic, therefore, adopts magnetic separation can effectively separate magnetic iron ore and mispickel to flotation tailing.
Preferably, flotation is to carry out under the situation that sulphur, arsenic mineral have obtained more fully dissociating, and promptly sulphur, arsenic mineral liberation degree of minerals are greater than 90%.
Described flotation obtains the sulphur rough concentrate through roughly selecting earlier, again to the sulphur rough concentrate carry out 1～2 time selected, can obtain high-sulfur sulphur concentrate based on pyrite.
Preferably, described inhibitor is a humate.
Preferably, described flotation also comprises the medicament of following component: lime, butyl xanthate and 2# oil.
Preferably, roughly selecting institute's with medicament is lime 2000～5000g/t, arsenic inhibitor humate 1000～3000g/t, butyl xanthate 40～100g/t, 2
#Oil 10～30g/t, selected medicament is arsenic inhibitor humate 200～500g/t.
Preferably, described magnetic selection method is to carry out under (2000～3000 oersted) low-intensity magnetic field intensity.Can obtain sulphur concentrate based on magnetic iron ore, the sulphur grade greater than 34%, contain arsenic less than 0.8%, and nonmagnetic portion (arsenic bearing portion).
, nonmagnetic portion is roughly selected earlier if needed, obtained the arsenic rough concentrate, rougher tailings carries out scanning for 1～2 time again, and scavenger concentrate returns in proper order and roughly selects, simultaneously to the arsenic rough concentrate carry out again 1～3 time selected, chats returns an operation in proper order.Nonmagnetic portion in the magnetic separation product is carried out floating and enriching, can obtain arsenic concentrate.
Aforementionedly nonmagnetic portion is roughly selected institute's with medicament contain following component: sulfuric acid, copper sulphate, butyl xanthate and 2
#Oil is scanned medicament and is contained following component: copper sulphate, butyl xanthate and 2
#Oil.
It is aforementioned that to roughly select used medicament be sulfuric acid 1000～4000g/t, copper sulphate 300～800g/t, butyl xanthate 80～140g/t, 2
#Oil 10～30g/t, scanning medicament is copper sulphate 100～300g/t, butyl xanthate 60～100g/t, 2
#Oil 10～30g/t.
Sulphur iron ore concentrate a mixed with sulphur iron ore concentrate b obtain the total sulfur concentrate.
By the above-mentioned description of this invention as can be known, compare with prior art, a kind of method that reclaims sulphur, arsenic of separating from sulfur-bearing, arsenic material of the present invention has following advantage:
(1) flow process is simple, only just can carry out the separation of sulphur arsenic through comparatively simply floating-magnetic combined process flow;
(2) sulphur, arsenic good separating effect, sulphur arsenic contains low mutually in sulphur, the arsenic concentrate;
(3) sulphur, the comprehensive recovering effect of arsenic are good, resource can be utilized fully, and the sulphur concentrate sulfur recovery rate that this method obtains can be greater than 80%, the arsenic concentrate arsenic rate of recovery can make that the dimorphite thing in the material is recycled fully greater than 70%, the resource utilization height, good in economic efficiency;
(4) this technology can also alleviate the mine environmental protection pressure, because this material mostly is the nonferrous metal mine mine tailing, its arsenic content is higher, and arsenic-containing ores when stacking autoxidation can take place, and makes arsenic enter water body and soil, contaminated environment.After this PROCESS FOR TREATMENT, a large amount of arsenic-containing ores of mine tailing is recovered utilization, and it is lower to contain arsenic in the mine tailing, can directly stack.
In a word, the present invention adopts comparatively simple technology just can effectively sulphur, arsenic mineral be separated, obtain qualified sulphur concentrate and arsenic concentrate, sulphur, the comprehensive recovering effect of arsenic are good, sulphur, arsenic rate of recovery height, resource can be utilized fully, produces good economic benefit, simultaneously can also solve the environmental issue in mine, alleviate the environmental protection pressure in mine.
Description of drawings
Fig. 1 is the specific embodiment of the invention 1 process chart;
Fig. 2 is the specific embodiment of the invention 2 process charts.
The specific embodiment
The inventive method flow process is referring to Fig. 1
Embodiment 1
Employing the inventive method is carried out sulphur, the research of arsenic separation test to the mine tailing of the golden plumbous zinc polymetallic ore in Tongling, Anhui, and the sulphur that its mine tailing contains, arsenic mineral are magnetic iron ore, pyrite and mispickel, and other then is some gangue minerals, as carbonate and quartz etc.The content of magnetic iron ore is the highest in 3 kinds of mineral, secondly is mispickel and pyrite.Gold is mainly microfine parcel gold, in 3 kinds of mineral distribution is arranged all, but content is higher in mispickel.The concrete multielement analysis of mine tailing sees Table 1.
Table 1 mine tailing multielement analysis result/%
*g/t
From table 1 data as can be known, the callable element of this mine tailing is S, As, Au, according to original ore property, adopts of the present invention floating-the magnetic process integration, and Fig. 1 is seen in concrete technological process.Be mainly:
(1) adopts flotation to carry out sulphur arsenic and separate, obtain sulphur concentrate 1 (based on pyrite);
(2) the flotation tailing magnetic separation obtains sulphur concentrate 2 (based on magnetic iron ore) and arsenic rough concentrate;
(3) the arsenic rough concentrate is carried out floating and enriching again, obtain arsenic concentrate;
(4) sulphur concentrate 1 is mixed with sulphur concentrate 2 obtain qualified total sulfur concentrate.
As shown in Figure 1, example 1 of the present invention at material be mine tailing after certain golden plumbous zinc polymetallic ore has selected golden plumbous zinc ,-0.074mm accounts for 67%, its sulphur, arsenic mineral liberation degree of minerals are higher, all greater than 90%, need not regrind.This material is carried out flotation, earlier obtains the sulphur rough concentrate through roughly selecting, again to the sulphur rough concentrate carry out 1 time selected, can obtain high-sulfur sulphur concentrate based on pyrite, the sulphur grade greater than 48%, contain arsenic less than 0.5%.Described inhibitor consumption is lime 3000g/t, arsenic inhibitor humate 2000g/t, butyl xanthate 60g/t, 2
#Oil 20g/t, selected dosing is arsenic inhibitor humate 300g/t.
Adopt the method for magnetic separation to carry out the sulphur second time, arsenic separation to flotation tailing, magnetic separation is to carry out under 2750 oersted low-intensity magnetic field intensity.Can obtain sulphur concentrate based on magnetic iron ore, the sulphur grade greater than 34%, contain arsenic less than 0.8%, and nonmagnetic portion (arsenic bearing portion).
The magnetic separation after separating, nonmagnetic portion is roughly selected earlier, obtain the arsenic rough concentrate, rougher tailings carries out scanning for 2 times again, and scavenger concentrate returns in proper order and roughly selects, simultaneously to the arsenic rough concentrate carry out again 2 times selected, can obtain arsenic concentrate, the arsenic grade is greater than 25%, and the arsenic rate of recovery is greater than 70%, and mine tailing contains arsenic less than 1%.
It is sulfuric acid 2000g/t, copper sulphate 500g/t, butyl xanthate 100g/t, 2 that nonmagnetic portion is roughly selected institute's with medicament
#Oil 20g/t, scanning medicament is copper sulphate 200g/t, butyl xanthate 80g/t, 2
#Oil 20g/t.
Result of the test sees Table 2.From table 2 result of the test as can be known, through floating-after the magnetic process integration sorts, can obtain sulfur-bearing 37.43%, contain the sulphur concentrate of arsenic 0.68%, sulfur recovery rate 86.47%, and the arsenic concentrate that contains arsenic 28.22%, the arsenic rate of recovery 75.31%, contain golden 13.41g/t, gold recovery 52.81% in the arsenic concentrate simultaneously.Thus, can illustrate and adopt technology of the present invention can effectively separate and reclaim elements such as sulphur in the nonferrous metal mine mine tailing, arsenic, gold.
Table 2 result of the test
*g/t
Embodiment 2
The sulphur arsenic bulk concentrate that Tongling, Anhui polymetallic ore is selected, the arsenic too high levels can't be worked as the sulphur concentrate and sell, and need carry out sulphur, arsenic separation, intends adopting the inventive method to carry out sulphur arsenic and separates, and draws qualified sulphur concentrate and arsenic concentrate and sells.This sulphur, the contained mineral of arsenic bulk concentrate mainly comprise magnetic iron ore, pyrite, mispickel and a small amount of gangue mineral, and concrete multielement analysis sees Table 3.。
Table 3 sulphur arsenic concentrate multielement analysis result/%
*g/t
From table 3 data as can be known, the callable element of this mine tailing is S, Fe, As, Au, and gold is mainly microfine parcel gold, and it is more diffusing to distribute, and distribution is all arranged in magnetic iron ore, pyrite, mispickel, but content is higher in mispickel.According to original ore property, adopt of the present invention floating-the magnetic process integration, Fig. 2 is seen in concrete technological process.
As shown in Figure 2, example 2 of the present invention at material be the sulphur arsenic bulk concentrate of selecting ,-0.074mm accounts for 72%, its sulphur, arsenic mineral liberation degree of minerals are higher, all greater than 90%, need not regrind.This material is carried out flotation, earlier obtains the sulphur rough concentrate through roughly selecting, again to the sulphur rough concentrate carry out 1 time selected, can obtain high-sulfur sulphur concentrate based on pyrite.Described inhibitor consumption is lime 4000g/t, arsenic inhibitor humate 2000g/t, butyl xanthate 80g/t, 2
#Oil 20g/t, selected dosing is arsenic inhibitor humate 400g/t.
Adopt the method for magnetic separation to carry out sulphur, arsenic separation to flotation tailing, magnetic separation is to carry out under 2750 oersted low-intensity magnetic field intensity.Can obtain sulphur concentrate based on magnetic iron ore, and nonmagnetic portion (arsenic bearing portion).
Result of the test sees Table 4.From table 4 result of the test as can be known, through floating-after the magnetic process integration sorts, can obtain sulfur-bearing 38.40%, contain the sulphur concentrate of arsenic 0.72%, sulfur recovery rate 87.90%, and the arsenic concentrate that contains arsenic 15.33%, the arsenic rate of recovery 82.65%, contain golden 7.89g/t, gold recovery 61.24% in the arsenic concentrate simultaneously.This technological process is simple, and the effect that sulphur, arsenic separate is better, and can association recovery gold wherein.
Table 4 result of the test
Above-mentioned only is specific embodiments of the invention, but design concept of the present invention is not limited thereto, and allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.
Claims (10)
1. one kind is separated the method that reclaims sulphur, arsenic from sulfur-bearing, arsenic material, comprises the steps: to adopt inhibitor that mispickel and magnetic iron ore are suppressed earlier, and obtaining pyrite by flotation is main sulphur ore deposit a; Adopt magnetic separation to separate magnetic iron ore and mispickel to flotation tailing again, obtain sulphur ore deposit b and arsenic minerals based on magnetic iron ore.
2. a kind of method that reclaims sulphur, arsenic of separating from sulfur-bearing, arsenic material as claimed in claim 1, it is characterized in that: in the described flotation step, wherein sulphur, arsenic mineral liberation degree of minerals are greater than 90%.
3. a kind of method that reclaims sulphur, arsenic of from sulfur-bearing, arsenic material, separating as claimed in claim 1, it is characterized in that: described flotation is to obtain the sulphur rough concentrate through roughly selecting earlier, again to the sulphur rough concentrate carry out 1～2 time selected, obtain high-sulfur sulphur concentrate based on pyrite.
4. a kind of method that reclaims sulphur, arsenic of separating from sulfur-bearing, arsenic material as claimed in claim 3, it is characterized in that: described inhibitor is a humate.
5. a kind of method that reclaims sulphur, arsenic of separating from sulfur-bearing, arsenic material as claimed in claim 4, it is characterized in that: described flotation also comprises the medicament of following component: lime, butyl xanthate and 2
#Oil.
6. as claim 4 or 5 described a kind of methods that reclaim sulphur, arsenic of separating from sulfur-bearing, arsenic material, it is characterized in that: roughly selecting institute's with medicament is lime 2000～5000g/t, arsenic inhibitor humate 1000～3000g/t, butyl xanthate 40～100g/t, 2
#Oil is 10～30g/t; Selected medicament is arsenic inhibitor humate 200～500g/t.
7. a kind of method that reclaims sulphur, arsenic of separating from sulfur-bearing, arsenic material as claimed in claim 1, it is characterized in that: the magnetic field intensity of described magnetic separation is 2000～3000 oersteds.
8. a kind of method that reclaims sulphur, arsenic of from sulfur-bearing, arsenic material, separating as claimed in claim 1, it is characterized in that: after the magnetic separation, nonmagnetic portion is roughly selected earlier, obtain the arsenic rough concentrate, rougher tailings carries out scanning for 1～2 time again, scavenger concentrate returns in proper order and roughly selects, simultaneously to the arsenic rough concentrate carry out again 1～3 time selected, chats returns an operation in proper order.
9. a kind of method that separate to reclaim sulphur, arsenic from sulfur-bearing, arsenic material as claimed in claim 8 is characterized in that: describedly nonmagnetic portion is roughly selected step institute with medicament contain following component: sulfuric acid, copper sulphate, butyl xanthate and 2
#Oil is scanned medicament and is contained following component: copper sulphate, butyl xanthate and 2
#Oil.
10. a kind of method that separate to reclaim sulphur, arsenic from sulfur-bearing, arsenic material as claimed in claim 9 is characterized in that: described nonmagnetic portion is roughly selected institute's with medicament is sulfuric acid 1000～4000g/t, copper sulphate 300～800g/t, butyl xanthate 80～140g/t, 2
#Oil 10～30g/t, scanning medicament is copper sulphate 100～300g/t, butyl xanthate 60～100g/t, 2
#Oil 10～30g/t.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008115A (en) * | 2013-01-07 | 2013-04-03 | 湖南有色金属研究院 | Inhibitor of pyrite and application thereof |
| CN103316775A (en) * | 2013-05-21 | 2013-09-25 | 内蒙古科技大学 | High-sulfur magnetite concentrate efficient activated flotation desulfuration method |
| CN103447145A (en) * | 2013-09-12 | 2013-12-18 | 广西华锡集团股份有限公司车河选矿厂 | Ore dressing method for recycling sulfur and arsenic from tin-lean multi-metal sulfide flotation tailings |
| CN103706461A (en) * | 2013-12-13 | 2014-04-09 | 北京华夏建龙矿业科技有限公司 | Unrestraint mineral processing process for arsenious copper sulphide ores |
| CN104549769A (en) * | 2015-01-08 | 2015-04-29 | 广西大学 | Method for separating sulfoarsenic mineral from gangue by flotation |
| CN104668266A (en) * | 2014-12-03 | 2015-06-03 | 厦门紫金矿冶技术有限公司 | Innocent treatment method of arsenic-containing dangerous waste residues |
| CN105032605A (en) * | 2015-06-10 | 2015-11-11 | 岳阳大力神电磁机械有限公司 | Magnetic separation method for gathering copper and cobalt in copper and cobalt oxide ores |
| CN105834008A (en) * | 2016-06-08 | 2016-08-10 | 江西元再生资源有限公司 | Preparation method of inhibitors for arsenic-containing sulfide minerals in copper tailings |
| CN105903573A (en) * | 2016-04-28 | 2016-08-31 | 厦门紫金矿冶技术有限公司 | Composite beneficiation inhibitor used for copper-arsenic separating flotation |
| CN106513182A (en) * | 2016-09-30 | 2017-03-22 | 青海省地质矿产测试应用中心 | Beneficiation method for arsenic-containing lead sulfide ore |
| CN107697889A (en) * | 2017-09-29 | 2018-02-16 | 上海电力学院 | A kind of method that sulphur and arsenic are reclaimed in the bridge without platform slag from wet method |
| CN107694741A (en) * | 2017-11-01 | 2018-02-16 | 紫金矿业集团股份有限公司 | A kind of method of copper concentrate arsenic removal |
| CN107899740A (en) * | 2017-10-10 | 2018-04-13 | 广东省资源综合利用研究所 | A kind of high arsenic-bearing pyrite concentrate pozzuolite separation ore-sorting technique containing magnetic iron ore |
| CN110496700A (en) * | 2019-07-17 | 2019-11-26 | 铜陵有色金属集团股份有限公司 | The method and its application of gold are recycled from high arsenic gold concentrator tailings |
| CN113019684A (en) * | 2021-03-15 | 2021-06-25 | 中国恩菲工程技术有限公司 | Method for separating pyrite from pyrrhotite |
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| CN103008115B (en) * | 2013-01-07 | 2014-05-28 | 湖南有色金属研究院 | Inhibitor of pyrite and application thereof |
| CN103008115A (en) * | 2013-01-07 | 2013-04-03 | 湖南有色金属研究院 | Inhibitor of pyrite and application thereof |
| CN103316775A (en) * | 2013-05-21 | 2013-09-25 | 内蒙古科技大学 | High-sulfur magnetite concentrate efficient activated flotation desulfuration method |
| CN103316775B (en) * | 2013-05-21 | 2014-09-03 | 内蒙古科技大学 | High-sulfur magnetite concentrate efficient activated flotation desulfuration method |
| CN103447145A (en) * | 2013-09-12 | 2013-12-18 | 广西华锡集团股份有限公司车河选矿厂 | Ore dressing method for recycling sulfur and arsenic from tin-lean multi-metal sulfide flotation tailings |
| CN103706461A (en) * | 2013-12-13 | 2014-04-09 | 北京华夏建龙矿业科技有限公司 | Unrestraint mineral processing process for arsenious copper sulphide ores |
| CN104668266B (en) * | 2014-12-03 | 2017-03-15 | 厦门紫金矿冶技术有限公司 | A kind of method for innocent treatment of waste residue of endangering containing arsenic |
| CN104668266A (en) * | 2014-12-03 | 2015-06-03 | 厦门紫金矿冶技术有限公司 | Innocent treatment method of arsenic-containing dangerous waste residues |
| CN104549769A (en) * | 2015-01-08 | 2015-04-29 | 广西大学 | Method for separating sulfoarsenic mineral from gangue by flotation |
| CN105032605A (en) * | 2015-06-10 | 2015-11-11 | 岳阳大力神电磁机械有限公司 | Magnetic separation method for gathering copper and cobalt in copper and cobalt oxide ores |
| CN105903573A (en) * | 2016-04-28 | 2016-08-31 | 厦门紫金矿冶技术有限公司 | Composite beneficiation inhibitor used for copper-arsenic separating flotation |
| CN105834008A (en) * | 2016-06-08 | 2016-08-10 | 江西元再生资源有限公司 | Preparation method of inhibitors for arsenic-containing sulfide minerals in copper tailings |
| CN106513182A (en) * | 2016-09-30 | 2017-03-22 | 青海省地质矿产测试应用中心 | Beneficiation method for arsenic-containing lead sulfide ore |
| CN107697889A (en) * | 2017-09-29 | 2018-02-16 | 上海电力学院 | A kind of method that sulphur and arsenic are reclaimed in the bridge without platform slag from wet method |
| CN107899740A (en) * | 2017-10-10 | 2018-04-13 | 广东省资源综合利用研究所 | A kind of high arsenic-bearing pyrite concentrate pozzuolite separation ore-sorting technique containing magnetic iron ore |
| CN107694741A (en) * | 2017-11-01 | 2018-02-16 | 紫金矿业集团股份有限公司 | A kind of method of copper concentrate arsenic removal |
| CN110496700A (en) * | 2019-07-17 | 2019-11-26 | 铜陵有色金属集团股份有限公司 | The method and its application of gold are recycled from high arsenic gold concentrator tailings |
| CN113019684A (en) * | 2021-03-15 | 2021-06-25 | 中国恩菲工程技术有限公司 | Method for separating pyrite from pyrrhotite |
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Application publication date: 20111116 |