CN102166545A - Mineral dressing additive for gold mine and preparation method thereof - Google Patents
Mineral dressing additive for gold mine and preparation method thereof Download PDFInfo
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- CN102166545A CN102166545A CN 201010553418 CN201010553418A CN102166545A CN 102166545 A CN102166545 A CN 102166545A CN 201010553418 CN201010553418 CN 201010553418 CN 201010553418 A CN201010553418 A CN 201010553418A CN 102166545 A CN102166545 A CN 102166545A
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Abstract
The invention discloses a mineral dressing additive for a gold mine, which is prepared by taking inorganic substances as raw materials, and reacting at high temperature of 600-950 DEG C for 1-3 hours and pulverizing. The mineral dressing additive for a gold mine comprises the following components in parts by weight: 20-50 parts of urea, 5-10 parts of sodium hexametaphosphate, 5-10 parts of sodium sulfide, 0-10 parts of sodium bromide, 0-30 parts of sodium ferrocyanide, 20-50 parts of soda and 5-10 parts of sodium hydroxide. The product is free of virulent compounds, can not injure human and animals during production and use, can not cause significant pollution, and is environment-friendly. Proven by industrial trial, the product has the advantages of better mineral dressing effect, high recovery rate, simple production method, short process flow, easy technological operation, abundant and cheap raw materials for production, low production cost and better economic benefit and social benefit.
Description
Technical field
The invention belongs to the technique of preparing field, relate to a kind of gold mine ore dressing additive and preparation method thereof.
Background technology
China gold mine produces great majority and is the multicomponent association, and grade is lower, adds the outmoded situation such as aging of preparation equipment, causes useful recovery levels generally lower, and utilization rate is not high, and resources loss and waste are serious, and the gold grade of discarded tailing still can reach 1～6g/t.Existing gold mine technique of preparing mainly contains: cyaniding, flotation, gravity treatment and gravity treatment-joint flotation technology etc.Cyaniding has direct cyaniding and preliminary treatment-cyaniding; Gravity separation method generally adopts chute and shaking table.Flotation is generally adopted back ore deposit direct flotation or the back flotation of regrinding.Adopt the cyaniding technique of preparing most popular, but there is environmental issue in the cyanide solution severe toxicity, and for some gold ores, leaching effect is unsatisfactory; Adopt the independent flotation beneficiation of gravity separation method and ore deposit, back, gold recovery is low.
People such as Zhu Shenhong point out in the gold selecting and smelting technology summary of Jiangxi non-ferrous metal 1989.1: the flotation and metallurgy method of refractory gold ore directly leaches at present to be had: strengthen cyaniding-pressure cyanide method; Carbon-in-leach process; Non-extraction of gold by cyanidation is as thiocarbamide leaching, water chlorination leaching, thiosulfate leaching etc.The preconditioning technique of refractory gold ore is to adopt physics or chemical method that the gold in the ore is exposed, and is ultra-fine mill, roasting so that main method is reclaimed in cyaniding; Pressure oxidation (comprising high-pressure oxidation, low-pressure oxidized, high-temperature pressurizing oxidation); Chemical oxidation (mainly contain two oxidizing process, sulfuric acid oxidation, Nitrox method, hypochlorite, charcoal chlorine and soak method, Carba method, CGA method etc.); Thiocarbamide is nontoxic, and selectivity is good, and leaching velocity is fast, and Nevada, USA Carl Jn type difficulty selects the fine-grained disseminated grain gold mine to leach with the sulphur cheek has 90% gold to obtain reclaiming, dynamics research show with cyaniding relatively thiocarbamide leach reaction speed and bring disaster to 10 times.A kind ofly be considered to reasonable immersion liquid, its composition is: thiocarbamide 1%, the leaching rate of sulfuric acid 6.5 and ferric ion 0.1% this solution is suitable with the cyaniding immersion liquid that consists of nacn 0.5% and calcium oxide 0.05%.Yet the dissolution velocity of silver in the commonplace solution of sour sulfur, fast 10.8 times than the dissolution velocity in cyanating solution, the dissolving of gold in acid thiocarbamide is that it dissolves fast 12.2 times of speed in cyanating solution.Domestic in recent ten years, many R﹠D institutions are also studied.
Chinese patent application numbers 200710198415.4, the method for cyaniding gold concentrator tailings gold secondary recovery.Then be that the cyaniding gold concentrator tailings is deployed into concentration is 30～35% ore pulp, carry out flotation after the stirring, it is 35～40g/t that floatation process adopts the medicament black powder, and xanthate is 160～180g/t, and terpenic oil is 6～8g/t.This invention combines charcoal slurry and floatation process, remedies mutually, further improves the rate of recovery of gold, reduces metal loss, and mine tailing per ton on average can reclaim 0.15g.
Chinese patent application numbers 200910009775.4, a kind of beneficiation method that improves gold recovery in the golden mine tailing. be to be that carrier connects gold concentrator tailings and imposes beneficiation reagent with the raw ore, comprise following processing steps in sequence:
A. muck carries out fragmentation with raw ore;
B. ore grinding adds selected metallic ore with the ratio of gold concentrator tailings 1: 1～3 to the raw ore of fragmentation in raw ore and grinds, and is milled to-0.074mm, 60～76% fineness;
C. roughly select, roughly select to levigate mixing ore deposit adding butyl xanthate 20～100g/t, fourth hinge black powder 1～30g/t, No. 2 oil 5～20g/t;
D. selected, add sodium metasilicate 20～100g/t to the rough concentrate roughly selected out and carry out selectedly, select Gold Concentrate under Normal Pressure.
Beneficiation method further comprises:
A. scan 1, add butyl xanthate 10～40g/t, butyl ammonium aerofloat 5～20g/t to the thick mine tailing of roughly selecting out and scan 1;
B. scan 2, add butyl xanthate 20～100g/t, butyl ammonium aerofloat 1～30g/t and scan 2, return and scan 1 and enter circulation scanning 2 concentrate 2 of sweeping that go out to scanning 1 ore deposit 1 of winding up that goes out;
C. scan 3, add butyl xanthate 20～100g/t, butyl ammonium aerofloat 1～30g/t, No. 2 oil 5～20g/t scan 3, return and scan 2 and enter circulation scanning 3 concentrate 3 of sweeping that go out, discarded tailing returns the earth.With the smart mine tailing chosen with scan 1 concentrate 1 of sweeping that goes out and return to roughly select and enter circulation.The result of the test rate of recovery has improved 17.3～20.76%.
In existing gold ore technology, adopt the cyaniding technique of preparing most popular, but there is environmental issue in the cyanide solution severe toxicity, and adopts the cyaniding leaching effect unsatisfactory for some gold ores; Adopt the independent flotation beneficiation of gravity separation method and ore deposit, back, gold recovery is low., seek a kind of ore dressing additive that improves gold recovery in the gold mine and seem particularly urgent along with but the resource of industrialization exploitation is day by day poor.The new technology that research in recent years adopts no cyanogen to carry gold is paid attention to more.Wherein to thiocarbamide method, bromination method, thiosulfate technique, chloridising and iodine method all in studying, but not very good as yet.
Summary of the invention
The objective of the invention is to adopt poisonous material to prepare gold mine ore dressing additive, can improve gold recovery, can reduce cost again, protect environment, and a kind of gold mine ore dressing additive and preparation method thereof is provided.
The present invention is achieved in that
A kind of gold mine ore dressing additive, be that the employing inorganic matter is a raw material, through pyroreaction, pulverize and sieve and form, it is formed and weight fraction comprises: the urea element is that 20～50 parts, calgon are that 5～10 parts, vulcanized sodium are that 5～10 parts, sodium bromide are that 0～10 part, sodium ferrocyanide are that 0～30 part, soda ash are that 20～50 parts and caustic soda are 5～10 parts.
Above-described gold mine ore dressing additive, its raw material is formed and weight fraction is: the urea element is that 40 parts, six volume sodium phosphates are that 8 parts, vulcanized sodium are that 7 parts, sodium bromide are that 2 parts, sodium ferrocyanide are that 20 parts, soda ash are that 35 parts and caustic soda are 6 parts.
The preparation method of gold mine ore dressing additive: be to get the raw materials ready by the raw material proportioning, mix in the adding mixer, after mixing, pyroreaction is 1～3 hour in the adding stainless steel reaction pot, and pulverize with pulverizer the cooling back, after sieving and be packaged to be product.
Above-described pyroreaction, the control reaction temperature is 600～950 ℃.
Advantage of the present invention and good effect are:
1, gold mine ore dressing additive of the present invention does not contain hypertoxic compound, produces and use can not injure people and animal, and is pollution-free, environmentally friendly.
2, this product is on probation through industrialization, gold mine ore dressing effect is good than the ore dressing additive, rate of recovery height, and gold mine ore dressing per ton adds 0.02～0.08% of this additive, the gold rate of recovery improves 20.2～31.4%, has improved the value of gold mine greatly and to effective processing of the ore dressing three wastes.
3, this product processes is simple, and technological process is short, and technological operation is easy.
4, this production raw material is easy to get inexpensively, and production cost is low, and economic benefit and social benefit are better.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
The present invention is described in further detail below in conjunction with accompanying drawing.
The specific embodiment
Preparation embodiment 1
Raw material is formed and weight fraction is: the urea element is that 40 parts, six volume sodium phosphates are that 8 parts, vulcanized sodium are that 7 parts, sodium bromide are that 2 parts, sodium ferrocyanide are that 20 parts, soda ash are that 35 parts and caustic soda are 6 parts.
Preparation method: take by weighing raw material respectively by proportioning, and add mix in the mixer together, after mixing, add again in the stainless steel reaction pot 800～900 ℃ of reactions 1.5 hours, cooling to 30 ℃ then pulverizes with pulverizer, sieve through 20 purpose vibratory sieves, packing promptly obtains the ore dressing additive product at last again.
This product is on probation in Guangxi gold mine ore dressing 6～August in 2010, compares with former cyaniding technology, and the gold rate of recovery improves 23.1%, and the aqueous solution animal that produces used this product of interpolation is drunk nonhazardous.
Preparation embodiment 2
Raw material is formed and weight fraction is: the urea element is that 45 parts, six volume sodium phosphates are that 5 parts, vulcanized sodium are that 10 parts, sodium ferrocyanide are that 20 parts, soda ash are that 40 parts and caustic soda are 8 parts.
Preparation method: take by weighing raw material respectively by proportioning, and add mix in the mixer together, after mixing, add again in the stainless steel reaction pot 650～750 ℃ of reactions 2 hours, cooling to 40 ℃ then pulverizes with pulverizer, sieve through 20 purpose vibratory sieves, packing promptly obtains the ore dressing additive product at last again.
This product is on probation in Guangxi gold mine ore dressing 6～August in 2010, compares with former cyaniding technology, and the gold rate of recovery improves 29.6%, and the aqueous solution animal that produces used this product of interpolation is drunk nonhazardous.
Claims (4)
1. gold mine ore dressing additive, it is characterized in that: the employing inorganic matter is a raw material, through pyroreaction, pulverize and sieve and form, it is formed and weight fraction comprises: the urea element is that 20～50 parts, calgon are that 5～10 parts, vulcanized sodium are that 5～10 parts, sodium bromide are that 0～10 part, sodium ferrocyanide are that 0～30 part, soda ash are that 20～50 parts and caustic soda are 5～10 parts.
2. a kind of gold mine ore dressing additive according to claim 1, it is characterized in that: described gold mine ore dressing additive, its raw material is formed and weight fraction is: the urea element is that 40 parts, six volume sodium phosphates are that 8 parts, vulcanized sodium are that 7 parts, sodium bromide are that 2 parts, sodium ferrocyanide are that 20 parts, soda ash are that 35 parts and caustic soda are 6 parts.
3. a kind of gold mine ore dressing additive according to claim 1, it is characterized in that: its preparation method is to get the raw materials ready by the raw material proportioning, add mix in the mixer, after mixing, pyroreaction is 1～3 hour in the adding stainless steel reaction pot, pulverize with pulverizer the cooling back, after sieving and be packaged to be product.
4. a kind of gold mine ore dressing additive according to claim 1 is characterized in that: described pyroreaction, the control reaction temperature is 600～950 ℃.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012079283A1 (en) * | 2010-12-15 | 2012-06-21 | Teng Peigui | Mineral-dressing agent for noble metal, preparation method and application thereof |
| CN103464305A (en) * | 2013-09-06 | 2013-12-25 | 广西鑫开力科技有限公司 | Noble metals beneficiation agent and preparation method and application thereof |
| CN107225047A (en) * | 2017-05-23 | 2017-10-03 | 西北矿冶研究院 | Method for enriching noble metals from walls and ground of gold and silver smelting workshop |
| CN107674993A (en) * | 2017-09-26 | 2018-02-09 | 广西金之源矿业科技有限公司 | One kind puies forward golden agent and its preparation technology |
| CN108728639A (en) * | 2017-04-20 | 2018-11-02 | 陈淑金 | A kind of novel gold mine dressing agent and preparation method thereof |
| CN109136552A (en) * | 2018-10-29 | 2019-01-04 | 新疆金川矿业有限公司 | A kind of improved environment protection proposes golden agent |
| CN110548601A (en) * | 2019-09-26 | 2019-12-10 | 广西森合高新科技股份有限公司 | Gold ore dressing agent, preparation method thereof and gold ore dressing method |
| CN112522523A (en) * | 2020-11-04 | 2021-03-19 | 陆云骏 | Gold and silver beneficiation agent, preparation method and application thereof |
| CN117884259A (en) * | 2024-03-14 | 2024-04-16 | 中国矿业大学(北京) | Multi-metal ore dressing and separating agent and preparation method and application thereof |
| CN117884259B (en) * | 2024-03-14 | 2024-05-31 | 中国矿业大学(北京) | Multi-metal ore dressing and separating agent and preparation method and application thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012079283A1 (en) * | 2010-12-15 | 2012-06-21 | Teng Peigui | Mineral-dressing agent for noble metal, preparation method and application thereof |
| CN103464305A (en) * | 2013-09-06 | 2013-12-25 | 广西鑫开力科技有限公司 | Noble metals beneficiation agent and preparation method and application thereof |
| CN103464305B (en) * | 2013-09-06 | 2015-07-15 | 广西鑫开力科技有限公司 | Noble metals beneficiation agent and preparation method and application thereof |
| CN108728639A (en) * | 2017-04-20 | 2018-11-02 | 陈淑金 | A kind of novel gold mine dressing agent and preparation method thereof |
| CN107225047B (en) * | 2017-05-23 | 2019-05-17 | 西北矿冶研究院 | Method for enriching noble metals from walls and ground of gold and silver smelting workshop |
| CN107225047A (en) * | 2017-05-23 | 2017-10-03 | 西北矿冶研究院 | Method for enriching noble metals from walls and ground of gold and silver smelting workshop |
| CN107674993A (en) * | 2017-09-26 | 2018-02-09 | 广西金之源矿业科技有限公司 | One kind puies forward golden agent and its preparation technology |
| CN109136552A (en) * | 2018-10-29 | 2019-01-04 | 新疆金川矿业有限公司 | A kind of improved environment protection proposes golden agent |
| CN109136552B (en) * | 2018-10-29 | 2020-07-31 | 新疆金川矿业有限公司 | Improved environment-friendly gold extraction agent |
| CN110548601A (en) * | 2019-09-26 | 2019-12-10 | 广西森合高新科技股份有限公司 | Gold ore dressing agent, preparation method thereof and gold ore dressing method |
| CN112522523A (en) * | 2020-11-04 | 2021-03-19 | 陆云骏 | Gold and silver beneficiation agent, preparation method and application thereof |
| CN117884259A (en) * | 2024-03-14 | 2024-04-16 | 中国矿业大学(北京) | Multi-metal ore dressing and separating agent and preparation method and application thereof |
| CN117884259B (en) * | 2024-03-14 | 2024-05-31 | 中国矿业大学(北京) | Multi-metal ore dressing and separating agent and preparation method and application thereof |
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