CN102061383A - Selective copper removing method for high-copper gold loaded carbon - Google Patents
Selective copper removing method for high-copper gold loaded carbon Download PDFInfo
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- CN102061383A CN102061383A CN2010105450393A CN201010545039A CN102061383A CN 102061383 A CN102061383 A CN 102061383A CN 2010105450393 A CN2010105450393 A CN 2010105450393A CN 201010545039 A CN201010545039 A CN 201010545039A CN 102061383 A CN102061383 A CN 102061383A
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Abstract
The invention relates to a selective copper removing method for high-copper gold loaded carbon, which is to selectively remove copper from high-copper gold loaded carbon by adding one or several of hydrogen peroxide, potassium permanganate, sodium chlorate and sodium hypochlorite as an additive and recover the copper from copper removing liquid by an extraction or neutralization method. The method has the advantages that: the process flow is short, the medicament dosage is small, and the treatment time is short; the copper removal rate is high (over 90 percent), and gold is not extracted basically; the process for recovering copper from the copper removing liquid is simple, and the copper removing liquid can be recycled after the copper is recovered; and calcium-magnesium precipitates and the like on the surface of the gold loaded carbon can be removed.
Description
Technical field
The present invention relates to the method that a kind of high-copper carries golden charcoal selective decoppering.
Background technology
Prior art generally is with carbon-in-pulp process or carbon-in-leach process Treatment of Copper gold mine, and during with carbon-in-pulp process or carbon-in-leach process Treatment of Copper gold mine, it is higher that ubiquity carries golden charcoal copper grade, and the insider is called the carry golden charcoal of copper grade greater than 5kg/t high-copper and carries golden charcoal.High-copper carries adsorption rate and the loading capacity that golden charcoal existence can reduce gold, thereby causes problems such as gold loaded carbon desorption-electrodeposition efficient is low, electrodeposition gold mud purity is low, gold refining cost height.
In order to address the above problem, people such as Pan Zhibing are in " mineral products comprehensive utilization ", 1999 the 4th phases disclosed that a kind of high-copper carries the method for golden charcoal cyaniding decopper(ing) and at " gold ", o. 11th disclosed the method that a kind of ammonia soaks decopper(ing) in 1999, these two kinds of methods all expect to obtain higher decopper(ing) rate, the cyaniding decopper(ing) can make the copper decreasing ratio reach 95%, and ammonia soaks decopper(ing) can make the copper decreasing ratio reach 90%, and auri is not originally leached.But because the cyaniding decopper(ing) needs the prussiate of functional quality concentration about 3%, decopper(ing) solution must adopt acidization to reclaim copper and prussiate, so the potential safety hazard that exists the HCN gas evolution to bring is had relatively high expectations to the safety operation on producing; And ammonia soaks decopper(ing) owing to need the ammoniacal liquor of functional quality concentration＞12%, so exist operating environment poor, ammonia soaks problems such as solution ammonia recovery utilization rate only about 70%, does not see on industry so far and uses so cyaniding decopper(ing) and ammonia soak decopper(ing).
Summary of the invention
Task of the present invention is to overcome the deficiencies in the prior art, provides a kind of high-copper to carry the method for golden charcoal selective decoppering.
For finishing the work, the present invention adopts following technical scheme:
High-copper is carried golden charcoal join in the dilute hydrochloric acid, add a small amount of additive, the mode that goes out on advancing under the soln using circulates, and intermittently fills pneumatic blending, and normal-temperature reaction certain hour, decopper(ing) liquid adopt solvent extraction or neutralisation to reclaim copper, and the detailed process condition is as follows:
Liquid-solid ratio (mass ratio) is 3: 1～15: 1;
Concentration of hydrochloric acid is 1%～10%;
Additive is one or more in hydrogen peroxide, potassium permanganate, sodium chlorate, the clorox;
The concentration of additive is 0.2%～5%;
Temperature of reaction is a normal temperature;
Reaction times is 5～24 hours.
The used per-cent (%) of the present invention all refers to mass percent.
This technology has the following advantages:
1, technical process is short, dosing is few, the treatment time is short;
2, copper decreasing ratio height (＞90%), and gold leaching rate＜0.5% in year golden charcoal can be realized selective decoppering;
3, decopper(ing) liquid copper reclaims that technology is simple, decopper(ing) liquid reclaims reusable edible behind the copper;
4, can remove the calcium magnesium precipitate thing that year golden carbon surface adheres to, help strengthening the absorption property that carries golden charcoal.
Embodiment
Fig. 1 is the method process flow sheet that a kind of high-copper of the proposition according to the present invention carries golden charcoal selective decoppering.
As shown in Figure 1, a kind of method of high-copper gold loaded carbon selective decoppering comprises the steps and process conditions:
A, selective decoppering, carry in the golden charcoal at high-copper, the adding mass concentration is 1%～10% dilute hydrochloric acid, add mass concentration then and be in 0.2%～5% hydrogen peroxide, potassium permanganate, sodium chlorate, the clorox one or more as additive, the mode that goes out on advancing under the soln using circulates, intermittently fill pneumatic blending, normal-temperature reaction 5～24 hours;
B, solid-liquid separation are carried out solid-liquid separation after reaction finishes, and obtain decopper(ing) charcoal and decopper(ing) liquid, and the decopper(ing) charcoal enters the desorb-electrodeposition operation of gold, and decopper(ing) liquid can be added and can turn back to high-copper behind a certain amount of hydrochloric acid and the additive and carry golden charcoal selective decoppering operation;
C, recovery copper, when the copper concentration in the decopper(ing) liquid reaches 10～15g/L, can utilize solvent extraction or neutral method to reclaim copper, solution after obtaining copper-contained material and reclaiming copper, but the copper-contained material refining obtains copper or directly export trade, reclaims solution behind the copper and can add and turn back to high-copper behind a certain amount of hydrochloric acid and the additive and carry golden charcoal selective decoppering operation or qualified discharge after treatment.
Below in conjunction with embodiment method of the present invention is described further.
Embodiment 1:
Take by weighing the 100g high-copper and carry golden charcoal (copper grade 35kg/t, gold grade 3kg/t), adding 800ml concentration is 2.5% dilute hydrochloric acid, add a small amount of hydrogen peroxide, making the hydrogen peroxide starting point concentration is 0.5%, and the mode that goes out on advancing under the soln using circulates, intermittently fill pneumatic blending, normal-temperature reaction 12 hours, copper decreasing ratio are 93%, gold leaching rate 0.2%.Decopper(ing) liquid adopts solvent-extracted method to reclaim copper, copper recovery 95%.
Embodiment 2:
Take by weighing the 100g high-copper and carry golden charcoal (copper grade 35kg/t, gold grade 3kg/t), adding 1200ml concentration is 2% dilute hydrochloric acid, add a small amount of sodium chlorate, making the sodium chlorate starting point concentration is 0.3%, and the mode that goes out on advancing under the soln using circulates, intermittently fill pneumatic blending, normal-temperature reaction 8 hours, copper decreasing ratio are 95%, gold leaching rate 0.3%.Decopper(ing) liquid adopts solvent-extracted method to reclaim copper, copper recovery 95%.
Embodiment 3:
Take by weighing the 100g high-copper and carry golden charcoal (copper grade 35kg/t, gold grade 3kg/t), adding 1000ml concentration is 8% dilute hydrochloric acid, add a small amount of potassium permanganate, making the potassium permanganate starting point concentration is 0.4%, and the mode that goes out on advancing under the soln using circulates, intermittently fill pneumatic blending, normal-temperature reaction 10 hours, copper decreasing ratio are 94%, gold leaching rate 0.3%.Decopper(ing) liquid adopts neutralisation to reclaim copper, copper recovery 98%.
Embodiment 4:
Take by weighing the 100g high-copper and carry golden charcoal (copper grade 35kg/t, gold grade 3kg/t), adding 1400ml concentration is 5% dilute hydrochloric acid, add a small amount of clorox, making the clorox starting point concentration is 0.8%, and the mode that goes out on advancing under the soln using circulates, intermittently fill pneumatic blending, normal-temperature reaction 16 hours, copper decreasing ratio are 91%, gold leaching rate 0.2%.Decopper(ing) liquid adopts solvent-extracted method to reclaim copper, copper recovery 95%.
Embodiment 5:
Take by weighing the 100g high-copper and carry golden charcoal (copper grade 35kg/t, gold grade 3kg/t), adding 1000ml concentration is 3% dilute hydrochloric acid, add a small amount of hydrogen peroxide and sodium chlorate, make hydrogen peroxide and sodium chlorate starting point concentration be respectively 0.3% and 0.5%, the mode that goes out on advancing under the soln using circulates, intermittently fill pneumatic blending, normal-temperature reaction 12 hours, copper decreasing ratio are 92%, gold leaching rate 0.3%.Decopper(ing) liquid adopts solvent-extracted method to reclaim copper, copper recovery 95%.
Embodiment 6:
Take by weighing the 100g high-copper and carry golden charcoal (copper grade 35kg/t, gold grade 3kg/t), adding 1200ml concentration is 5% dilute hydrochloric acid, add a small amount of potassium permanganate and sodium chlorate, make potassium permanganate and sodium chlorate starting point concentration be respectively 0.2% and 0.4%, the mode that goes out on advancing under the soln using circulates, intermittently fill pneumatic blending, normal-temperature reaction 16 hours, copper decreasing ratio are 92%, gold leaching rate 0.3%.Decopper(ing) liquid adopts neutralisation to reclaim copper, copper recovery 98%.
Embodiment 7:
Take by weighing the 100g high-copper and carry golden charcoal (copper grade 35kg/t, gold grade 3kg/t), adding 1000ml concentration is 5% dilute hydrochloric acid, add a small amount of hydrogen peroxide, potassium permanganate and clorox, make hydrogen peroxide, potassium permanganate and clorox starting point concentration be respectively 0.2%, 0.2% and 0.5%, the mode that goes out on advancing under the soln using circulates, intermittently fill pneumatic blending, normal-temperature reaction 12 hours, copper decreasing ratio are 94%, gold leaching rate 0.4%.Decopper(ing) liquid adopts neutralisation to reclaim copper, copper recovery 98%.
Embodiment 8:
Take by weighing the 100g high-copper and carry golden charcoal (copper grade 35kg/t, gold grade 3kg/t), add 1200ml decopper(ing) liquid, add part hydrochloric acid and hydrogen peroxide, make hydrochloric acid and hydrogen peroxide starting point concentration be respectively 5% and 0.8%, the mode that goes out on advancing under the soln using circulates, intermittently fill pneumatic blending, normal-temperature reaction 16 hours, copper decreasing ratio are 90%, gold leaching rate 0.2%.Decopper(ing) liquid adopts solvent-extracted method to reclaim copper, copper recovery 95%.
Embodiment 9:
Take by weighing the 100g high-copper and carry golden charcoal (copper grade 35kg/t, gold grade 3kg/t), add the solution after 1000ml reclaims copper, add part hydrochloric acid and hydrogen peroxide, make hydrochloric acid and hydrogen peroxide starting point concentration be respectively 3% and 1%, the mode that goes out on advancing under the soln using circulates, intermittently fill pneumatic blending, normal temperature fills pneumatic blending reaction 24 hours, and the copper decreasing ratio is 92%, gold leaching rate 0.2%.Decopper(ing) liquid adopts neutralisation to reclaim copper, copper recovery 98%.
Comparative Examples 1:
Take by weighing the 100g high-copper and carry golden charcoal (copper grade 35kg/t, gold grade 3kg/t), adding 800ml concentration is 2.5% dilute hydrochloric acid, the mode that goes out on advancing under the soln using circulates, and intermittently fills pneumatic blending, normal-temperature reaction 12 hours, the copper decreasing ratio is 15%, gold leaching rate 0.2%.
Comparative Examples 2:
Take by weighing the 100g high-copper and carry golden charcoal (copper grade 35kg/t, gold grade 3kg/t), adding 1000ml concentration is 15% dilute hydrochloric acid, the mode that goes out on advancing under the soln using circulates, and intermittently fills pneumatic blending, normal-temperature reaction 24 hours, the copper decreasing ratio is 35%, gold leaching rate 0.2%.
Claims (3)
1. a high-copper carries golden charcoal method for decoppering, it is characterized in that high-copper carries golden charcoal and add any or several copper that carries in the golden charcoal that optionally removes in additive hydrogen peroxide, potassium permanganate, sodium chlorate, the clorox in the dilute hydrochloric acid system.
2. high-copper according to claim 1 carries golden charcoal method for decoppering, and the concentration that it is characterized in that additive is 0.2～5%.
3. high-copper according to claim 1 carries golden charcoal method for decoppering, it is characterized in that the mass percent that dilute hydrochloric acid and high-copper carry golden charcoal is 3～15: 1, and dilute hydrochloric acid concentration is 1～10%, and temperature of reaction is a normal temperature, and the reaction times is 5～24 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105450393A CN102061383A (en) | 2010-11-10 | 2010-11-10 | Selective copper removing method for high-copper gold loaded carbon |
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| CN2010105450393A CN102061383A (en) | 2010-11-10 | 2010-11-10 | Selective copper removing method for high-copper gold loaded carbon |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194614A (en) * | 2013-03-22 | 2013-07-10 | 紫金矿业集团股份有限公司 | Low-grade copper-bearing gold ore dump leaching-carbon adsorption production method |
| CN103572068A (en) * | 2012-08-02 | 2014-02-12 | 厦门紫金矿冶技术有限公司 | Method for recovering copper from copper-containing gold-loaded carbon |
| CN104294042A (en) * | 2014-09-02 | 2015-01-21 | 厦门紫金矿冶技术有限公司 | Method for selective removal of copper from high copper gold loaded carbon by ammoniacal cyanide process |
| CN105331820A (en) * | 2015-11-17 | 2016-02-17 | 紫金矿业集团股份有限公司 | Method for recovering copper from copper and cyanogen-contained waste water of mine |
Citations (3)
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| ZA908081B (en) * | 1989-07-10 | 1991-08-28 | Anglo Amer Corp South Africa | Method for the recovering of metal values |
| CN1230600A (en) * | 1998-03-26 | 1999-10-06 | 陈希龙 | Technological process of desorbing electrolytic gold from gold-carrying carbon |
| CN101037285A (en) * | 2007-02-09 | 2007-09-19 | 苏州市环境工程有限责任公司 | Integrative recovering and reusing of heavy metals in wire board plating wastewater treatment sludge |
-
2010
- 2010-11-10 CN CN2010105450393A patent/CN102061383A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA908081B (en) * | 1989-07-10 | 1991-08-28 | Anglo Amer Corp South Africa | Method for the recovering of metal values |
| CN1230600A (en) * | 1998-03-26 | 1999-10-06 | 陈希龙 | Technological process of desorbing electrolytic gold from gold-carrying carbon |
| CN101037285A (en) * | 2007-02-09 | 2007-09-19 | 苏州市环境工程有限责任公司 | Integrative recovering and reusing of heavy metals in wire board plating wastewater treatment sludge |
Non-Patent Citations (2)
| Title |
|---|
| 《化工矿山技术》 19961231 巫汉泉等 用盐湖水氰化堆浸含铜金矿石的实践 48，54-56 1-3 第25卷, 第1期 * |
| 《矿产综合利用》 19990831 潘志兵等 高铜载金炭氰化脱铜 10-12 1-3 , 第4期 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103572068A (en) * | 2012-08-02 | 2014-02-12 | 厦门紫金矿冶技术有限公司 | Method for recovering copper from copper-containing gold-loaded carbon |
| CN103194614A (en) * | 2013-03-22 | 2013-07-10 | 紫金矿业集团股份有限公司 | Low-grade copper-bearing gold ore dump leaching-carbon adsorption production method |
| CN103194614B (en) * | 2013-03-22 | 2015-10-21 | 紫金矿业集团股份有限公司 | The method that a kind of low-grade copper gold dump leaching-charcoal absorption is produced |
| CN104294042A (en) * | 2014-09-02 | 2015-01-21 | 厦门紫金矿冶技术有限公司 | Method for selective removal of copper from high copper gold loaded carbon by ammoniacal cyanide process |
| CN104294042B (en) * | 2014-09-02 | 2016-09-21 | 厦门紫金矿冶技术有限公司 | A kind of ammonia cyanogen method selectivity is from the method for high-copper gold loaded carbon decopper(ing) |
| CN105331820A (en) * | 2015-11-17 | 2016-02-17 | 紫金矿业集团股份有限公司 | Method for recovering copper from copper and cyanogen-contained waste water of mine |
| CN105331820B (en) * | 2015-11-17 | 2017-07-25 | 紫金矿业集团股份有限公司 | From mine containing the method that copper is reclaimed in Effluent of cuprous cyanide |
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Application publication date: 20110518 |