CN1230600A - Technological process of desorbing electrolytic gold from gold-carrying carbon - Google Patents
Technological process of desorbing electrolytic gold from gold-carrying carbon Download PDFInfo
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- CN1230600A CN1230600A CN98101081A CN98101081A CN1230600A CN 1230600 A CN1230600 A CN 1230600A CN 98101081 A CN98101081 A CN 98101081A CN 98101081 A CN98101081 A CN 98101081A CN 1230600 A CN1230600 A CN 1230600A
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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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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
In the conditions of 136-170 deg.c temperature and 0.35-0.80 MPa pressure and by using sodium hydroxde as desorbing agent, electrolytic gold is desorbed from gold-carrying carbon effectively. The present invention has the advantages of high desorbing rate, high electrolysis rate, great production capacity and low production cost.
Description
The present invention relates to a kind of processing method of desorbing electrolytic gold, especially do not have a kind of under the cyanogen condition from carrying the processing method of desorbing electrolytic gold on the golden charcoal in High Temperature High Pressure.
The processing method from carrying desorbing electrolytic gold on the golden charcoal of gold sector application now is: the normal pressure desorbing electrolytic method of heating, heat, pressing and desorption electrolytic process and alcohol (alcohols) desorbing electrolytic method.Following characteristics are specifically arranged:
The normal pressure desorbing electrolytic method of heating is meant that at temperature 80-95 ℃ pressure is under the condition of normal pressure (1 normal atmosphere), and as the desorb medicament, the desorbing electrolytic activity duration is 50-70 hour with NaCN and NaOH.This method desorbing electrolytic time is long, throughput is low, and desorption efficiency, electrolyzing rate are also on the low side, the production cost height.
The pressing and desorption of heating electrolytic process is meant at temperature 105-130C, under the condition of pressure 0.15-0.3MPa, adopts NaCH and NaOH to carry out desorbing electrolytic as the desorb medicament to carrying golden charcoal.Desorption time is 30-48 hour, and desorption efficiency 85-98%, electrolyzing rate are more than or equal to 98%, and shortcoming is that desorption time is long, and throughput is low, and desorption efficiency, electrolyzing rate are also on the low side, generate this height.
Alcohol (alcohols) desorbing electrolytic method is meant under temperature 80-85 ℃ normal pressure (1 normal atmosphere), adopts the alcohol of 15-20% and NaOH, NaCH as the desorb medicament, 12 hours desorbing electrolytic time, shortcoming is that alcohol is volatile, inflammable, be unfavorable for safety in production, throughput is little, the production cost height.
The object of the present invention is to provide a kind ofly from carrying the processing method of desorbing electrolytic gold on the golden charcoal, specific conditions can obtain at short notice that safety, High-efficient Production go out pure gold effect in implementing with this method and method.
The object of the present invention is achieved like this: a kind of from carrying the processing method of desorbing electrolytic gold on the golden charcoal, comprise from carrying the desorb medicament of desorb gold on the golden charcoal, using method; Its process is:
A. carry golden charcoal and go into pickling tank and carry out pickling, used pickle solution is hydrochloric acid or nitric acid;
B. gone into the desorb post and carried out pressing and desorption by the golden charcoal that carries of a gained, used stripping liquid is that the ratio that adds the water preparation is 2～10% sodium hydroxide, and its working pressure range is 0.35MPa～0.80MPa;
C. the stripping liquid that contains gold ion by the b gained pumps into electric heater through desorb, and its operating temperature range is 136～170 ℃;
D. go into electrolytic tank electrolysis by the stripping liquid (your liquid) of c gained, get bronze;
This processing method is at temperature 136-170 ℃, under the condition of pressure 0.35-0.8MPa, adopt the NaOH of 2-10% to carry out desorbing electrolytic, and electrolytic process also carry out under high temperature (136-170 ℃), high pressure (0.35-0.8MPa) and desorb identical conditions as the desorb medicament.
The present invention is as follows with the advantage that other desorbing electrolytic processing method contrast of using now has:
1) desorption efficiency height can reach 98-99.9%
2) electrolyzing rate height: 〉=99.6%
3) desorbing electrolytic turnaround time weak point, 10-12 hour
4) throughput is big, the 0.5-3 ton per day
5) non-cyanide desorption, desorb reagent cost are low
6) desorbing electrolytic operation ton charcoal power consumption is low
7) production cost is low, remarkable benefit.
Both this, in conjunction with the accompanying drawings and embodiments the present invention is described in further detail again:
Fig. 1 is from carrying the process method flow chart of desorbing electrolytic gold on the golden charcoal.
The present invention relates to from carrying the processing method of desorbing electrolytic gold on the golden charcoal, comprise that the implementation step of this processing method is from carrying the using method of the desorb medicament of desorb gold on the golden charcoal:
A. carry golden charcoal and go into pickling tank and carry out pickling, used pickle solution is hydrochloric acid or nitric acid;
B. gone into the desorb post and carried out pressing and desorption by the golden charcoal that carries of a gained, used stripping liquid is that the ratio that adds the water preparation is 2～10% sodium hydroxide, and its working pressure range is 0.35MPa～0.80MPa;
C. the stripping liquid that contains gold ion by the b gained pumps into electric heater through desorb, and its operating temperature range is 136～170 ℃;
D. go into electrolytic tank electrolysis by the stripping liquid (your liquid) of c gained, get bronze;
More than above-mentioned b, c, d process circulated at least and repeat once, above-mentioned desorb medicament also can be to be 2～10% potassium hydroxide solution with respect to once dropping into the weight ratio of carrying golden charcoal in the pickling tank.Above-mentioned desorb medicament can also be to be the solution that 2～10% sodium hydroxide adds little water again with respect to once dropping into the weight ratio of carrying golden charcoal in the acid system groove.As can be seen from Figure 1: a year golden charcoal at first is added in the pickling tank and carries out pickling with hydrochloric acid or nitric acid, and year golden charcoal after pickling is put into and carries out desorb in the desorb post, and desorb medicament sodium hydroxide is added in the stripping liquid storage tank, adds water and is mixed with the stripping liquid that contains NaOH2-10%.Stripping liquid is raised through the desorb liquid pump and is delivered to electric heater and heat, stripping liquid after the heating is given in the desorb post, carry out desorb to carrying golden charcoal, the gold ion that gets off from gold loaded carbon desorption enters into your liquid of stripping liquid formation, your liquid passes through the strainer removal of impurities after the desorb post is discharged after, be given to and carry out electrolysis in the electrolyzer, the gold ion in your liquid obtains forming gold atom after the electronics by electrolysis, is deposited on electric tank cathode and forms bronze.Bronze is smelted into ingot after regularly taking out, and has reached from carrying golden charcoal to extract golden purpose.Your liquid forms lean solution after electrolysis, lean solution is raised through the desorb liquid pump and delivered to electric heater, arrives the desorb post again, and after tens of times circulation, a year golden charcoal forms and contains the very low degold charcoal (poor charcoal) of gold, reaches from carrying the purpose of thorough desorb gold on the golden charcoal like this.
But influence mainly contains temperature, pressure, desorb medicine component from the factor of carrying desorb gold on the golden charcoal.Along with the raising of temperature, pressure, the balancing capacity constant of charcoal absorption gold descends very rapid, and temperature and pressure is high more, and the desorb of gold is thorough more.When pressure reach 0.5MPa, when temperature reaches 150 ℃, desorption process can finish in 6 hours.And at pressure 0.1MPa, desorption process needs 60 hours during 95 ℃ of temperature.Concerning desorb medicament sodium hydroxide, alkali concn is high more, OH in the solution
-High more, then can displace the gold that is adsorbed to a greater degree.But only adopt NaOH as the desorb medicament, only in temperature greater than 135 ℃, pressure just can be obtained comparatively ideal desorption effect during greater than 0.35MPa.And the desorption effect condition that the present invention realizes ideal is:
Desorbing electrolytic temperature: 136-170 ℃, desorbing electrolytic pressure: 0.35-0.8MPa, stripping liquid composition: 2-10%NaOH, and can guarantee that with these conditions the technical indicator that reaches is: desorption efficiency: 98-99.8%, electrolyzing rate: 99.6%, desorbing electrolytic turnaround time: 10-12 hour, throughput: the 0.5-3 ton carries golden charcoal/day (specification of equipment vary in size throughput also different), is not difficult to obtain following conclusion by the above embodiments: these processing method characteristics are that electrolytic process also carries out under high temperature 136-170 ℃, high pressure 0.35-0.8MPa condition.And the electrolytic process of other desorbing electrolytic technology can only carry out under normal pressure 0.1MPa, low temperature≤95 ℃ condition, the stripping liquid that is higher than electrolysis temperature like this in the desorbing electrolytic process just must just can carry out electrolysis after the supercooler cooling, the lean solution after the electrolysis must be gone desorb again after heating.Stripping liquid will pass through heating-cooling-reheat-refrigerative working cycle more thus, and these processes have not only been wasted a large amount of electric energy, and are difficult to the desorb that reaches a high temperature.And adopt High Temperature High Pressure non-cyanide desorption electrolysis process method is to guarantee that stripping liquid does not need cooling just can carry out electrolysis behind desorption process, after passing through stripping liquid (lean solution) after the electrolysis thus and only needing the heat distribution loss of heat make-up in working cycle, just can carry out desorb again.So not only having saved a large amount of electric energy, mainly is can realize carrying out desorbing electrolytic under high temperature 136-170 ℃, high pressure 0.35-0.8MPa condition, has shortened the desorb electrolysis time significantly, has improved the throughput of equipment.
Owing to realized desorb under the high-temperature high-pressure situation, only use NaOH just comparatively ideal desorption effect can be come true as the desorb medicament, also can not re-use the higher hypertoxic medicament sodium cyanide of price, this is a kind of non-cyanide desorption of promptly having realized, has significantly reduced the advanced technologies method of killing two birds with one stone that the desorb medicament expense is used again.This conclusion is based on the fact conclusion about not disclosed from all documents that carry desorbing electrolytic gold on the golden charcoal of domestic and international disclosed report at present, and it serves as that the industry of producing gold is done the contribution that makes new advances again that the creator longs for this conclusion.
Claims (4)
1. one kind from carrying the processing method of desorbing electrolytic gold on the golden charcoal, comprises from carrying the using method of the desorb medicament of desorb gold on the golden charcoal, it is characterized in that:
A. carry golden charcoal and go into pickling tank and carry out pickling, used pickle solution is hydrochloric acid or nitric acid;
B. gone into the desorb post and carried out pressing and desorption by the golden charcoal that carries of a gained, used stripping liquid is that the ratio that adds the water preparation is 2～10% sodium hydroxide, and its working pressure range is 0.35MPa～0.80MPa;
C. the stripping liquid that contains gold ion by the b gained pumps into electric heater through desorb, and its operating temperature range is 136～170 ℃;
D. go into electrolytic tank electrolysis by the stripping liquid (your liquid) of c gained, get bronze.
2. according to claim 1 from carrying the processing method of desorbing electrolytic gold on the golden charcoal, it is characterized in that above-mentioned b, c, d process circulate at least repeat once more than.
3. according to claim 1 from carrying the processing method of desorbing electrolytic gold on the golden charcoal, it is characterized in that above-mentioned desorb medicament also can be is 2～10% potassium hydroxide solution with respect to once dropping into the weight ratio of carrying golden charcoal in the pickling tank.
4. according to claim 1 from carrying the processing method of desorbing electrolytic gold on the golden charcoal, it is characterized in that above-mentioned desorb medicament can also be is the solution that 2～10% sodium hydroxide adds little water again with respect to once dropping into the weight ratio of carrying golden charcoal in the acid system groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98101081A CN1230600A (en) | 1998-03-26 | 1998-03-26 | Technological process of desorbing electrolytic gold from gold-carrying carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98101081A CN1230600A (en) | 1998-03-26 | 1998-03-26 | Technological process of desorbing electrolytic gold from gold-carrying carbon |
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| CN1230600A true CN1230600A (en) | 1999-10-06 |
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| CN98101081A Pending CN1230600A (en) | 1998-03-26 | 1998-03-26 | Technological process of desorbing electrolytic gold from gold-carrying carbon |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061383A (en) * | 2010-11-10 | 2011-05-18 | 紫金矿业集团股份有限公司 | Selective copper removing method for high-copper gold loaded carbon |
| CN101792854B (en) * | 2009-11-17 | 2011-07-20 | 灵宝市金源矿业有限责任公司 | Desorption technology for gold-loaded carbon |
| CN102517452A (en) * | 2011-12-09 | 2012-06-27 | 紫金矿业集团股份有限公司 | Method for recovering gold from gold-containing tail liquid produced by gold-loaded carbon desorption and electrodeposition technology |
| CN109652658A (en) * | 2019-02-27 | 2019-04-19 | 武汉理工大学 | A method of noble metal complex ion being recycled from thiosulfate leaching liquid using sulphide ore |
| CN109706315A (en) * | 2019-02-27 | 2019-05-03 | 武汉理工大学 | A kind of method that molybdenum disulfide adsorbs noble metal complex ion in thiosulfate leaching liquid |
-
1998
- 1998-03-26 CN CN98101081A patent/CN1230600A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792854B (en) * | 2009-11-17 | 2011-07-20 | 灵宝市金源矿业有限责任公司 | Desorption technology for gold-loaded carbon |
| CN102061383A (en) * | 2010-11-10 | 2011-05-18 | 紫金矿业集团股份有限公司 | Selective copper removing method for high-copper gold loaded carbon |
| CN102517452A (en) * | 2011-12-09 | 2012-06-27 | 紫金矿业集团股份有限公司 | Method for recovering gold from gold-containing tail liquid produced by gold-loaded carbon desorption and electrodeposition technology |
| CN109652658A (en) * | 2019-02-27 | 2019-04-19 | 武汉理工大学 | A method of noble metal complex ion being recycled from thiosulfate leaching liquid using sulphide ore |
| CN109706315A (en) * | 2019-02-27 | 2019-05-03 | 武汉理工大学 | A kind of method that molybdenum disulfide adsorbs noble metal complex ion in thiosulfate leaching liquid |
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