CN104232893A - Chemical and metallurgical gold extraction and comprehensive utilization method of high-arsenic high-iron gold ore - Google Patents

Chemical and metallurgical gold extraction and comprehensive utilization method of high-arsenic high-iron gold ore Download PDF

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CN104232893A
CN104232893A CN201410171583.4A CN201410171583A CN104232893A CN 104232893 A CN104232893 A CN 104232893A CN 201410171583 A CN201410171583 A CN 201410171583A CN 104232893 A CN104232893 A CN 104232893A
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gold
arsenic
iron
leaching
comprehensive utilization
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CN104232893B (en
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戴元宁
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

The invention relates to a chemical and metallurgical technology for extraction of gold and comprehensive utilization of arsenic and iron from high-arsenic high-iron refractory metallurgical ore. The process comprises the following steps: evenly mixing calculated amount (required for a complete reaction) of sodium thiosulfate serving as a decomposition agent, ammonium sulfate serving as an ammoniation alkaline agent with bleaching powder serving as a promoter catalyst to form a leaching liquid with a desired concentration, circularly sprinkling and leaching the pulverized high-arsenic high-iron gold ore in a heap leaching tank with the leaching liquid, enabling the leaching liquid which meets the gold-containing concentration to enter a replacement process to extract gold by replacing with aluminum wires, carrying out spray rinsing on slag with a controlled amount of clean water and directly selling the spray-rinsed slag as arsenic-iron concentrate ore or processing into arsenic chemical products or iron products for sale, carrying out aluminum evaporation, gold skimming and gold smelting on sponge gold aluminum wire to obtain a gold product, and recycling the mother liquid after the mother liquid reaches the standard. The process disclosed by the invention is simple and feasible and has the advantages of low cost, high recovery rate and good comprehensive utilization and the problems of serious arsenic pollution and residue of the slag in the traditional pyrogenic process or wet process are especially avoided and the resource utilization of the high-arsenic high-iron refractory metallurgical ore is well achieved.

Description

The chemical industry metallurgical of high arsenic high ferro gold mine puies forward gold and method of comprehensive utilization
specification digest
The present invention is a kind of Whote-wet method process height arsenic high ferro difficult separation ore deposit, extracts gold from and the chemical industry metallurgical technology of arsenic iron comprehensive utilization.Be specifically related to be wrapped in wherein with arsenide (major ingredient is mispickel) and pyrite with microfine state in mineral, or compose the gold that the use traditional method difficulty be stored in mispickel and pyritous single crystal selects smelting, carry out the method for the high efficiency extraction gold of Non-toxic pollution.Present invention process step is: piling in immersion trough by the high arsenic high ferro gold mine after pulverizing, prepare burden with the decomposition agent Sulfothiorine of calculated amount needed for complete reaction, ammonium alkaline agent ammonium sulfate and promoting catalyst chlorinated lime and mix, form the leaching liquid of desired concn, circulated sprinkling leaching is carried out to mineral.The leaching liquid reached containing gold concentration enters displacement operation and carries gold with aluminium wire displacement, sells or post-treatment is that arsenic Chemicals and iron product are sold after the clear water hydro-peening of slag manipulated variable (next time joins leaching liquid measure) as arsenic iron ore concentrate.Cake of gold aluminium wire carries out evaporation of aluminum, skimming gold metallurgy obtains gold product.Mother liquor is up to standard to be recycled.Present invention process is succinctly easy, and cost is low, and the rate of recovery is high, comprehensive utilization is made good use of, and particularly avoids the severe contamination of the arsenic of traditional pyrogenic process or wet method and the leftover problem of slag.Solve the resource utilization issue in high arsenic high ferro difficult separation ore deposit well.
the chemical industry metallurgical of high arsenic high ferro gold mine puies forward gold and method of comprehensive utilization.
Technical field
The invention belongs to and a kind ofly process the chemical industry metallurgical technology that difficulty selects smelting mineral intergrowth, be specifically related to the integrated conduct method that the Non-toxic in high arsenic high ferro difficult separation ore deposit is polluted.
Technical background
Development process height arsenic high ferro gold mine, it is a difficult problem for current mining and metallurgy circle, its difficult point with gold in arsenide (mainly mispickel) and pyrite relation closely, gold is often wrapped in wherein with microfine state, or tax is stored in mispickel and pyritous single crystal, makes it be difficult to make its separation and concentration by methods such as gravity treatment, flotation, magnetic separation.General with traditional pyrogenic process or wet processing, not only the rate of recovery is very low, and the pollution that poisons of arsenic is also bound to arouse fear: if carry out pyrogenic attack or calcination for activation to it, in air arsenic (arsenic oxide arsenoxide) poisons pollute inevitable; And adopting wet processing, the hydrogen arsenide in solution and poisoning of arsenous anion are also difficult to process and avoid.
In recent years the more and more a large amount of high arsenic high ferro difficult separation ore deposit found, suddenly treats that the Technology that effective Non-toxic is polluted develops.Apply the original and chemical industry metallurgical technology of advanced person, while allowing gold effectively crack to enter solution, arsenic and iron are combined into insoluble compound more closely to be stayed in slag, then gold is carried in displacement from metal, and from slag, subsequent disposal utilizes arsenic and iron corresponding product.Not only solve the gold separation and Extraction problem in high arsenic high ferro difficult separation ore deposit technically at all, and efficiently avoid arsenic poison pollution, more carry out comprehensive comprehensive utilization, to the economic benefit and the social benefit that improve these type of mineral, there are significantly actively progressive meaning and significantly economic benefit and social benefit.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of chemical industry metallurgical gold extracting method of high arsenic high ferro gold mine, and the arsenic in high arsenic high ferro gold mine, iron cpd can " be opened " by it, allow gold effectively enter solution, and displacement torpedo obtains gold product; And indissoluble double salt reformulated by arsenic and iron, utilize with the concentrate of arsenic and iron; Mother liquor recycles containing arsenic is up to standard.
Solving the scheme that technical problem of the present invention takes is: in ammonification alkaline environment, make decomposition agent with Sulfothiorine, promoting catalyst made by chlorinated lime, makes gold become complex ion to enter solution, allows become indissoluble double salt to stay in slag through the arsenic of oxidation cohesion, iron, calcium.Be cake of gold with the gold in aluminium wire substitutional solution, then obtain gold product through evaporation of aluminum skimming.Mother liquor after displacement, containing As < 0.3 ㎎/1, reaches and recycles.High arsenic height scum [LFe (OH) 3m FeAsO 14n Co 3(AsO 4) 2] sell or post-treatment oxygenerating arsenic product as arsenic concentrate, remaining rear scum sintering makes iron-smelting raw material or reduced iron powder processed.Its principle is:
1, Sulfothiorine ammonification alkaline decomposition gold, becomes complexing ion and enters solution
4Au+8Na 2S 2O 3+16NH 4OH→4[Au(NH 4) 4·（S 2O 3） 2] +1+16NaOH
But this reaction is carried out comparatively slow, does not reach industrialized requirement.
2, oxidization by bleaching powder catalysis deeply decomposes gold, make it become complexing ion soon and up hill and dale and enter solution, arsenic, iron, the calcium double salt of indissoluble is condensed under being oxidized to the strong basicity environment that the arsenic of high price and iron causes in id reaction, arsenic iron is recycled in " slag ", and mother liquor reaches emission standard (circulation is joined leaching liquid and used):
8Au+8NazS 2O 3+16NH 4OH+6Ca(OCl) 2+6H 2O
→4[Au(NH 4)·（S 3O 3） 2] +1+4[AuCl] -2+6Ca(OH 2)+16NaOH+3O 2[6【O】]
It should be noted that: because the decomposition behavior of chlorinated lime in basic solution is:
6Ca(OCl) 2+2OH→Ca(OH 2)+ 2【O】+2Cl -
(1), react the nascent oxygen [O] produced, play the formation reaction of oxidation catalysis gold aurothiosulfate complex ion, the OH simultaneously produced -strengthen alkaline environment again, it is quick and thorough that further promotion is reacted:
4Au+8S 2O 3 -2+4【O】+4H 2O→4[Au(S 2O 3） 2] +1+ 8OH -
(2) the Cl, produced -carry out reacting soon but also completely not only that to generate solution degree fabulous with Au
[AuCl 3] -2： Au+ 3Cl -→[AuCl 3] -2
(3), add cheap chlorinated lime, extract the gold of same amount, greatly reduce the consumption of high price Sulfothiorine and ammoniacal liquor
Before not adding chlorinated lime
4Au+8 NazS 2O 3+16NH 4OH→4[Au(NH 4)·（S 2O 3） 2] ++16NaOH
After adding chlorinated lime
8u+8 NazS 2O 3+4NH 4OH+3Ca(ClO)+12 H 2O
→4[Au(NH 4)·（S 2O 3） 2] -2+4[AuCl 3] 2-+ 6Ca(OH 2)+ 16NaOH
Compare from two reaction formula, adding of chlorinated lime, decrease the ammoniacal liquor of half Sulfothiorine and 3/4ths.
, the strong oxidizing property of chlorinated lime, ensure that arsenic and iron are oxidized to high price and effectively precipitate
Ca（ClO） 2+2H 3AsO 3+3Ca(OH) 2→Ca (AsO 4)↓+ CaCl 2+6H 2O
Ca（ClO） 2+2Fe 2++2H 2O→2Fe(OH) 3↓+ CaCl 2+OH -
Find out that from above-mentioned reaction the redox reaction that chlorinated lime is participated in not only generates insoluble compound Ca (AsO 4) 2and the Fe simultaneously generated (OH) 3can be used as carrier, realize the micro-degree of depth polymeric precipitation of arsenic and iron, make the arsenic in mother liquor and iron all reach emission standard
Fe(OH) 3+ AsO 4 -3+ Fe +3+ Ca +2→【L Fe(OH) 3·m Fe AsO 4·n Ca 3(AsO 4) 2】↓
(5), from above reaction find out, adding of chlorinated lime, the OH of reaction generation -be conducive to strengthening the molten gold reaction of alkalescence of Sulfothiorine and the precipitation polymerization of ferric ion to deviate from.
2, the present invention's aluminium wire displacement Jin Dynasty is for traditional zinc silk, and displacement gold from the leaching liquid of gold, has two outstanding large advantages:
(1), 1 molar Al can replace 1 molar Au, and 1.5 molar Zn just can replace 1 molar Au.
【AuCl 3】 -2+Al→Au↓+ Al Cl 3
2【AuCl 3】 -2+3Zn→2 Au+3Zn Cl 2
, due to the atomic molar ratio Zn of Al much smaller, Al replace Au time than with Zn replace Au time, absolute dosage is with regard to much less (being only 28% of Zn): (nucleidic mass of Al: 27, the nucleidic mass of Zn: 65; Replace 1 mol gold (197 grams): need Zn:65g × 1.5=97.5g; Aluminium is needed to be only: 27g × 1=27g).
, history so far, the market price of aluminium is all than zinc considerably cheaper, and generally at 85% of zinc valency, for now, No. 1 zinc valency per ton is ~ 1.5 ten thousand yuan, and No. 1 aluminium valency per ton be only ~ 1.3 ten thousand yuan.
To sum up three, economically see, replace zinc with aluminium, greatly can reduce production cost.
(4), from the activity command of element, Al is much more active than Zn, this be more conducive to the replacement(metathesis)reaction of Au fast with completely.
In a word, the present invention is when replacing gold, and replacing traditional zinc with aluminium, is a technological innovation of getting twice the result with half the effort.
3, the cake of gold being hung on aluminium wire carries out evaporation of aluminum skimming gold metallurgy and obtains the gold product that purity reaches more than 99%.
4, the arsenic iron calcium double salt be obtained by reacting can be used as arsenic concentrate sell or carry out post-treatment produce arsenic Chemicals and iron ore concentrate ironmaking or reduced iron powder.
5, dump leaching sprays wash water and reacts " mother liquor " up to standard, recycles as joining leaching liquid water distribution.
performing step of the present invention is as follows:
1, the decomposition leaching gold of high arsenic high ferro gold mine
(1), ore is broken for a centimeter stone, then is crushed to 40 ~ 80 orders through beater grinder in jaw crusher, in heap immersion trough, carry out dump leaching.
(2), heap leaching solution by chlorinated lime, Sulfothiorine and ammonium sulfate in 2: 1 ~ 3: 2 ratio join be 10 ~ 30% the aqueous solution.
, heap be immersed in circulated sprinkling under carry out, the time is 72-120h.
, spray reach containing gold concentration and lose slag containing gold qualified after, leaching liquid send displacement operation; Slag clear water spray washing (consumption controls within preparation leaching next time liquid measure), gained wash water is used as to join leaching liquid next time; Slag sells as arsenic iron ore concentrate or arsenic Chemicals and iron ore concentrate or iron product are produced in aftertreatment.
2, aluminium wire displacement cake of gold processed in three grades of cyclic permutation grooves, each point of row's loose suspension aluminium wire, allows the leaching liquid successive cycle of above-mentioned gold by three grades of displacement slot, obtained black cake of gold.
3, cake of gold is put into plumbago crucible, cake of gold evaporation of aluminum skimming gold metallurgy, is placed in heating and melting on coke-drum wind furnace, and aluminium is abandoned in evaporation, and repeatedly after skimming, ingot casting becomes gold product.
the invention has the beneficial effects as follows
1, creatively having carried out take chlorinated lime as promoting catalyst, and Sulfothiorine is the ammonium alkali solution spray dump leaching height arsenic high ferro difficult separation ore deposit of decomposition agent, and its advantage has three:
1., the chlorion (Cl that goes out of chlorinated lime reaction decomposes -) the fabulous reagent of an inherently molten gold, make the lixiviate of gold directly, fast, thoroughly.
2., the active oxygen [O] that goes out of chlorinated lime reaction decomposes, not only greatly catalysis and facilitate the formation reaction speed of gold aurothiosulfate complex ion and the thoroughness of reaction, and make iron and arsenic all be oxidized to high price, make its Fe generating indissoluble in alkaline environment (OH) 3fe AsO 4polymkeric substance.
3., the hydroxide radical that simultaneously produces of chlorinated lime reaction decomposes, not only strengthen alkaline environment, further promotion Sulfothiorine decomposes gold and generates the speed of response quickening of gold aurothiosulfate complex ion and thoroughly completing of reaction, and coordinate the calcium ion decomposited and the high price iron, the arsonium ion that are oxidized to, define Fe AsO 4caAsO 4fe (OH) 3polymerization shape indissoluble double salt, makes arsenic and iron to the greatest extent fully be stranded in slag, achieves the object that nontoxic pollution-free carries gold.
2, the promotion of chlorinated lime and catalysis, oxidation and chlorization, forefathers are proposed because of speed of response slow, react halfway sulfuration sulfuric acid process carry gold can not industrialization, become the industrialization engineering that can extract gold from getting twice the result with half the effort.
3, creatively little with molecular weight, that valency is high, market price is cheap aluminium wire replaces traditional zinc silk as the displacer of gold, greatly accelerates replacing velocity, reduces production cost, improve economic benefit.
4, the oxidation high price alkaline polymerization precipitation due to arsenic, iron, calcium is complete, makes displacement mother liquor containing As < 0.3 ㎎/1, not only reaches emission standard, and be cycled to used in preparation leaching liquid completely, achieve the zero release of liquid.
5, the high arsenic height scum of the present invention's generation, not only directly can sell as arsenic iron ore concentrate, and propose further aftertreatment, the scheme of production high value arsenic Chemicals and reduced iron powder.
6, operational path and processing parameter are selected science, economy, rationally, are achieved low cost, high benefit, and pollution-free and Comprehensive utilizes.
In sum, the present invention is that gold is carried in high arsenic high ferro difficult separation ore deposit and the utilization of free of contamination Comprehensive opens new way.
concrete embodiment:
Example one: the large-scale high arsenic high ferro gold mine of class of Burma health extracts gold from, companion produces arsenic concentrate.
One, raw material Main elements analysis
Element Au As Fe S
Content (%) 7.83 26.43 18.26 22.13
Two, technical process:
Mineral aggregate after pulverizing is placed in rot-resistant heap immersion trough, coordinates leaching liquid repeatedly to spray leaching gold with chlorinated lime, hypo, ammoniacal liquor.After leaching gold completes, leaching liquid makes displacer circulation cake of gold processed with aluminium wire in three grades of displacement slot, and slag is to be collected as arsenic iron ore concentrate (sale) after clear water washing.Displacement gained cake of gold evaporation of aluminum skimming ingot casting in plumbago crucible obtains gold product, and displacement mother liquor coordinates wash water to be cycled to used in preparation leaching liquid.
Three, processing condition
1, raw meal particle size: cross 80 orders >=95Wt%
2, condition (spray dump leaching) is leached:
(1), leaching agent proportioning:
Chlorinated lime: Sulfothiorine: ammoniacal liquor=1:2.5:2
(2), leaching liquid concentration: 30%
(3), spraying method: mechanical uniform circulated sprinkling
(4), washery slag main points: clear water washery slag manipulated variable is that dosing can be finished.
3, permutizer condition
(1), three grooves divide arrangement to hang aluminium wire
(2), iterative cycles displacement
4, gold metallurgy condition
(1), constantly stir evaporation of aluminum after cake of gold melting
(2), optionally skim scum silica frost
Four, this example products obtained therefrom, byproduct, mother liquor index:
1, product: gold: containing Au99.31%
2, byproduct: high arsenic height iron ore concentrate (slag): As38.32% Fe31.21% Ca8.22%
3, mother liquor is replaced: containing As0.21mg/1
example two: Longnan of Gansu Province height arsenic high ferro gold mine extracts gold from, accompanies product arsenic concentrate
One, raw material Main elements analysis
Element Au As Fe S
Content (%) 9.14 18.32 17.42 20.83
Two, main processes:
Mineral aggregate after pulverizing is placed in rot-resistant heap immersion trough, coordinates leaching liquid repeatedly to spray leaching gold with chlorinated lime, hypo, ammoniacal liquor.After leaching gold completes, leaching liquid makes displacer circulation cake of gold processed with aluminium wire in three grades of displacement slot, and slag is to be collected as arsenic iron ore concentrate (sale) after clear water washing.Displacement gained cake of gold evaporation of aluminum skimming ingot casting in plumbago crucible obtains gold product, replaces because coordinating wash water to be cycled to used in preparation leaching liquid.
Three, processing condition:
1, raw meal particle size: cross 60 orders >=95Wt%
2, condition (spray dump leaching) is leached:
(1), leaching agent proportioning:
Chlorinated lime: Sulfothiorine: ammoniacal liquor=1:2:2
(2), leaching liquid concentration: 30%
(3), spraying method: mechanical uniform circulated sprinkling
3, permutizer condition
(1), three grooves divide arrangement to hang aluminium wire
(2), reaction cycle displacement
4, gold metallurgy condition
(1), constantly stir evaporation of aluminum after cake of gold melting
(2), optionally skim scum silica frost
Four, this example products obtained therefrom, byproduct, mother liquor index:
1, product: gold: containing Au99.51%
2, byproduct: high arsenic height iron ore concentrate (slag): As30.31% Fe28.42% Ca6.13%
3, mother liquor is replaced: containing As0.13mg/1
example three, Yunnan mountain of papers height arsenic high ferro gold mine extract gold from, by-product white arsenic and the pig iron
One, raw material major ingredient
Element Au As Fe S
Content (%) 6.18 21.38 20.14 23.32
Two, main processes:
Mineral aggregate after pulverizing is placed in rot-resistant heap immersion trough, coordinates leaching liquid repeatedly to spray leaching gold with chlorinated lime, hypo, ammoniacal liquor.After leaching gold completes, leaching liquid makes displacer circulation cake of gold processed with aluminium wire in three grades of displacement slot, and gained cake of gold evaporation of aluminum skimming ingot casting in plumbago crucible obtains gold product, and leaching slag is to send oxygenerating arsenic and cast iron product after clear water washing.Wash water coordinates displacement Recycling Mother Solution for preparing leaching liquid.
Three, processing condition:
1, raw meal particle size: cross 60 orders >=95Wt%
2, condition (spray dump leaching) is leached:
(1), leaching agent proportioning:
Chlorinated lime: Sulfothiorine: ammoniacal liquor=1:2:2
(2), leaching liquid concentration: 25%
(3), spraying method: mechanical uniform circulated sprinkling
3, permutizer condition
(1), three grooves divide arrangement to hang aluminium wire
(2), reaction cycle displacement
4, gold metallurgy condition
(1), constantly stir evaporation of aluminum after cake of gold melting
(2), optionally skim scum silica frost
5, the aftertreatment of leaching slag:
(1), send special white arsenic production equipment to produce white arsenic containing As33.67%, Fe29.13%.
(2) the rich scum, producing white arsenic refines the pig iron after sintering briquetting.
Four, this example products obtained therefrom, byproduct, mother liquor index:
1, product: gold: containing Au 99.51%
2, byproduct:
1. white arsenic: containing As 2o 398.12% moisture content 0.38%
2. the pig iron: containing Fe 98.5% FeO 1.13%
3, mother liquor is replaced: containing As0.18mg/1.

Claims (6)

1. a chemical industry metallurgical process height arsenic high ferro difficult separation ore deposit, extracts gold from and the method for arsenic iron comprehensive utilization;
Its feature is: be promoting catalyst with chlorinated lime in ammonium alkaline environment, hypo makes decomposition agent, spray dump leaching is carried out to mineral, makes gold become complex ion to enter solution, allow high arsenic, high ferro and the calcium condensed through oxidation in alkaline environment, form indissoluble double salt and be detained in slag; Be cake of gold with the gold in aluminium wire substitutional solution, then obtain gold product through evaporation of aluminum skimming;
Mother liquor after displacement is containing As < 0.3 ㎎/1, and up to standard and circulation is joined leaching liquid and used; High arsenic height scum [LFe (OH) 3m FeAsO 14n Co 3(AsO 4) 2] sell or post-treatment oxygenerating arsenic product as arsenic concentrate, remaining rear scum sintered ironmaking or reduced iron powder processed.
2. according to claim 1 is promotor to high arsenic high ferro gold mine chlorinated lime, Sulfothiorine makes decomposition agent, the dump leaching of ammonification alkalescence spray extracts gold from and the method for arsenic iron comprehensive utilization, it is characterized in that: select chlorinated lime to be promoting catalyst, Sulfothiorine makes decomposition agent, ammoniacal liquor is made ammonification alkaline agent and is coordinated miscible for spray leaching liquid, and its proportioning is: 2: 1 ~ 3: 2, and leaching liquid concentration is 10-30%.
3. according to claim 1 is promotor to high arsenic high ferro gold mine chlorinated lime, Sulfothiorine makes decomposition agent, ammonification alkalescence spray dump leaching extract gold from and arsenic iron comprehensive utilization method, its unique point is: with aluminium wire replace traditional zinc silk as displacer displacement leaching liquid in gold be cake of gold.
4. according to claim 1 is promotor to high arsenic high ferro gold mine chlorinated lime, Sulfothiorine makes decomposition agent, the dump leaching of ammonification alkalescence spray extracts gold from and the method for arsenic iron comprehensive utilization, it is characterized in that: cake of gold is placed in plumbago crucible melting and stirs evaporation of aluminum, skimming removing impurities repeatedly, ingot casting obtains gold product.
5. according to claim 1 is promotor to high arsenic high ferro gold mine chlorinated lime, Sulfothiorine makes decomposition agent, the dump leaching of ammonification alkalescence spray extracts gold from and the method for arsenic iron comprehensive utilization, it is characterized in that: the high arsenic height scum after gold lixiviation carries out chemical industry metallurgical aftertreatment and produces arsenic oxide arsenoxide and the pig iron or reduced iron powder.
6. according to claim 1 is promotor to high arsenic high ferro gold mine chlorinated lime, Sulfothiorine makes decomposition agent, and the dump leaching of ammonification alkalescence spray extracts gold from and the method for arsenic iron comprehensive utilization, it is characterized in that, control slag washing water, merge the adapted water of displacement mother liquor as leaching liquid.
CN201410171583.4A 2014-04-28 2014-04-28 The chemical industry metallurgical of high arsenic high ferro gold mine puies forward gold and method of comprehensive utilization Active CN104232893B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106086451A (en) * 2016-07-27 2016-11-09 长春黄金研究院 A kind of method of collaborative reduction thiosulfate consumption
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
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
CN112501450A (en) * 2020-10-28 2021-03-16 黄伟 Gold extraction agent for treating high-sulfur high-arsenic gold ore and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004005556A1 (en) * 2002-07-02 2004-01-15 Commonwealth Scientific And Industrial Research Organisation Process for leaching precious metals
CN1814831A (en) * 2006-02-11 2006-08-09 欧华北 Wet preprocessing method for difficult-to-treat gold ore containing arsenic and antimony
CN1837382A (en) * 2005-03-23 2006-09-27 中南大学 Cooperated leaching method for low-grade intractable gold mine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004005556A1 (en) * 2002-07-02 2004-01-15 Commonwealth Scientific And Industrial Research Organisation Process for leaching precious metals
CN1837382A (en) * 2005-03-23 2006-09-27 中南大学 Cooperated leaching method for low-grade intractable gold mine
CN1814831A (en) * 2006-02-11 2006-08-09 欧华北 Wet preprocessing method for difficult-to-treat gold ore containing arsenic and antimony

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106086451A (en) * 2016-07-27 2016-11-09 长春黄金研究院 A kind of method of collaborative reduction thiosulfate consumption
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
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
CN112501450A (en) * 2020-10-28 2021-03-16 黄伟 Gold extraction agent for treating high-sulfur high-arsenic gold ore and preparation method thereof
CN112501450B (en) * 2020-10-28 2022-07-22 黄伟 Gold extraction agent for treating high-sulfur high-arsenic gold ore and preparation method thereof

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