CN101792854B - Desorption technology for gold-loaded carbon - Google Patents
Desorption technology for gold-loaded carbon Download PDFInfo
- Publication number
- CN101792854B CN101792854B CN2009101725939A CN200910172593A CN101792854B CN 101792854 B CN101792854 B CN 101792854B CN 2009101725939 A CN2009101725939 A CN 2009101725939A CN 200910172593 A CN200910172593 A CN 200910172593A CN 101792854 B CN101792854 B CN 101792854B
- Authority
- CN
- China
- Prior art keywords
- stripping liquid
- sodium cyanide
- desorption
- desorb
- gold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a desorption technology for gold-loaded carbon. Desorption solution formed by sodium hydroxide, sodium cyanide and water is heated and is fed to desorb the gold-loaded carbon, wherein the weight ratio of gold-loaded carbon to sodium hydroxide to sodium cyanide to water is 100-120:5:1:50. Moreover, sodium cyanide solution with mass concentration of 1-2 percent is added into the desorption solution before heating at the speed of 10-15L per hour. The mass concentration of sodium cyanide in desorption solution is controlled to be 0.1-0.15 percent. After the gold-loaded carbon is desorbed, if the temperature of the obtained desorption solution is lower than 80 DEG C, the desorption solution is directly returned to the desorption solution and is cyclically heated to desorb the gold-loaded carbon; and if the temperature of the obtained desorption solution is higher or equal to 80 DEG C, the desorption solution is fed to the next process. Since the sodium cyanide is continuously dosed in the desorption technology, the concentration of the sodium cyanide can be controlled at any time during desorption, the decomposition of the sodium cyanide is reduced to microscale, the pollution to the working personnel and the environment is reduced and 12kg of sodium cyanide can be saved in the entire desorption process when one ton of gold-loaded carbon is desorbed.
Description
Technical field
The invention belongs to the desorption technique technical field, be specifically related to the desorption technique of a kind of year golden charcoal.
Background technology
Shown in Figure 1 is the traditional method of gold loaded carbon desorption technology, this method is that the aqueous solution with sodium hydroxide and sodium cyanide is stripping liquid, carry out normal pressure desorb or the pressurization desorb of heating of heating to carrying a golden charcoal then, behind the gold loaded carbon desorption, the stripping liquid of acquisition is sent to next process.But sodium cyanide all is disposable adding in this method, its shortcoming one is that the medicine consumption is too big, the 2nd, sodium cyanide is Poisons, and the stripping liquid temperature generally is controlled at more than 98 ° during desorb, sodium cyanide in use hydrolysis is too fast, and a large amount of ammonias that produce during hydrolysis and sodium formiate etc. have all caused very big injury to environment and operative employee personnel.
Summary of the invention
There is insufficient part in the prior art for overcoming, the object of the present invention is to provide the desorption technique of a kind of year golden charcoal.
For achieving the above object, the present invention has adopted following technical scheme:
The desorption technique of a kind of year golden charcoal, with sodium hydroxide, send to normal pressure after the stripping liquid heating that sodium cyanide and water are formed or pressing and desorption is carried golden charcoal, behind the gold loaded carbon desorption, the stripping liquid that obtains is sent to next process, its special feature is that the dosing method of sodium cyanide is a continuous dosing: at first with sodium hydroxide, send to desorb after the stripping liquid heating that sodium cyanide and water are formed and carry golden charcoal, wherein carry golden charcoal: sodium hydroxide: sodium cyanide: the weight ratio of water is 100～120: 5: 1: 50, simultaneously with the sodium cyanide solution of adding mass concentration 1～2% continuously in 10～15 liters the stripping liquid of speed before heating per hour, the mass concentration of sodium cyanide is 10/10000ths～15 in the control stripping liquid, and during stripping liquid temperature＜80 that obtain after the desorb ℃, directly return recycle in the preceding stripping liquid of heating, during stripping liquid temperature 〉=80 that obtain ℃, stripping liquid is sent to next procedure.
Because in the whole technology is round-robin, stripping liquid also is to send to desorb again after the circulation heating to carry golden charcoal, so the initial temperature of stripping liquid before heating for the first time do not done requirement, but is 40～50 ℃ preferably.Stripping liquid is that the electric heater of selecting for use those skilled in the art to use always heats among the present invention, and its operating temperature range is 92～98 ℃.
Described next be electrowinning process to operation, the stripping liquid after electrolysis returns the stripping liquid storage tank.
Described electrolysis temperature is 80～95 ℃, and electrolysis time is 40～45 hours.
In the desorption technique of the present invention since sodium cyanide be the continuous dosing mode, therefore the sodium cyanide concentration in the time of can controlling desorb at any time, the decomposition of sodium cyanide is eased down to trace, reduction is to the pollution of staff and environment, and year golden charcoal with 1 ton of desorb is an example, and whole desorption process can be saved the sodium cyanide of 12kg.
Description of drawings
Fig. 1: tradition is carried the desorption technique schema of golden charcoal;
Fig. 2: the desorption technique schema of golden charcoal is carried in the present invention.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is done explanation in further detail, but protection scope of the present invention is not limited thereto.
Embodiment 1
The desorption technique of golden charcoal is carried in the present invention as shown in Figure 2: with 50 kilograms sodium hydroxide, the water of 10 kilograms sodium cyanide and 500 kilograms places the stripping liquid storage tank of 40 ℃ of initial temperatures, stripping liquid in the stripping liquid storage tank sent to after electric heater heating in the desorb post that carries golden charcoal that is equipped with 1 ton begin desorb under the normal pressure, the sodium cyanide solution that in the stripping liquid storage tank, adds simultaneously mass concentration 1% continuously with 10 liters speed per hour, the mass concentration of the sodium cyanide in the stripping liquid in the control stripping liquid storage tank is 10/ very much, after the desorb of desorb post, during stripping liquid temperature＜80 of discharging ℃, stripping liquid directly returns the recycle of stripping liquid storage tank, during stripping liquid temperature 〉=80 of discharging ℃, stripping liquid is sent in the electrolyzer, after 40 hours, the stripping liquid after electrolysis is delivered to recycle in the desorb storage tank in 80 ℃ of following electrolysis of temperature.
Carry golden charcoal by 1 ton of above-mentioned technology desorb, after the desorb fully, statistics consumes the sodium cyanide of 50kg, if carry golden charcoal for 1 ton by the existing normal pressure shown in Figure 1 desorption technique desorb of heating, then needs the sodium cyanide of 38kg, has consumed the sodium cyanide of 12kg than technology of the present invention more.
Embodiment 2
The desorption technique of golden charcoal is carried in the present invention as shown in Figure 2: with 50 kilograms sodium hydroxide, the water of 10 kilograms sodium cyanide and 500 kilograms places the stripping liquid storage tank of 45 ℃ of initial temperatures, stripping liquid in the stripping liquid storage tank sent to after electric heater heating in the desorb post that carries golden charcoal that is equipped with 1.1 tons begin desorb under the normal pressure, the sodium cyanide solution that in the stripping liquid storage tank, adds simultaneously mass concentration 1.5% continuously with 13 liters speed per hour, the mass concentration of the sodium cyanide in the stripping liquid in the control stripping liquid storage tank is 12/ very much, after the desorb of desorb post, during stripping liquid temperature＜80 of discharging ℃, stripping liquid directly returns the recycle of stripping liquid storage tank, during stripping liquid temperature 〉=80 of discharging ℃, stripping liquid is sent in the electrolyzer, after 43 hours, the stripping liquid after electrolysis is delivered to recycle in the desorb storage tank in 88 ℃ of following electrolysis of temperature.
Embodiment 3
The desorption technique of golden charcoal is carried in the present invention as shown in Figure 2: with 50 kilograms sodium hydroxide, the water of 10 kilograms sodium cyanide and 500 kilograms places the stripping liquid storage tank of 50 ℃ of initial temperatures, stripping liquid in the stripping liquid storage tank sent to after electric heater heating in the desorb post that carries golden charcoal that is equipped with 1.2 tons begin desorb under the pressurization (0.3Mpa), the sodium cyanide solution that in the stripping liquid storage tank, adds simultaneously mass concentration 2% continuously with 15 liters speed per hour, the mass concentration of the sodium cyanide in the stripping liquid in the control stripping liquid storage tank is 15/ very much, after the desorb of desorb post, during stripping liquid temperature＜80 of discharging ℃, stripping liquid directly returns the recycle of stripping liquid storage tank, during stripping liquid temperature 〉=80 of discharging ℃, stripping liquid is sent in the electrolyzer, after 45 hours, the stripping liquid after electrolysis is delivered to recycle in the desorb storage tank in 95 ℃ of following electrolysis of temperature.
Claims (2)
1. desorption technique that carries golden charcoal, with sodium hydroxide, send to normal pressure after the stripping liquid heating that sodium cyanide and water are formed or pressing and desorption is carried golden charcoal, the dosing method that it is characterized in that sodium cyanide is a continuous dosing: at first with sodium hydroxide, send to desorb after the stripping liquid heating that sodium cyanide and water are formed and carry golden charcoal, wherein carry golden charcoal: sodium hydroxide: sodium cyanide: the weight ratio of water is 100～120: 5: 1: 50, simultaneously with the sodium cyanide solution of adding mass concentration 1～2% continuously in 10～15 liters the stripping liquid of speed before heating per hour, the mass concentration of sodium cyanide is 10/10000ths～15 in the control stripping liquid, and during stripping liquid temperature＜80 that obtain after the desorb ℃, directly return recycle in the preceding stripping liquid of heating, during stripping liquid temperature 〉=80 that obtain ℃, stripping liquid is sent to next procedure; Described next process is an electrowinning process, and the stripping liquid after electrolysis returns the stripping liquid storage tank; Described electrolysis temperature is 80～95 ℃, and electrolysis time is 40～45 hours.
2. the desorption technique of year golden charcoal as claimed in claim 1 is characterized in that: the initial temperature of stripping liquid before heating for the first time is 40～50 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101725939A CN101792854B (en) | 2009-11-17 | 2009-11-17 | Desorption technology for gold-loaded carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101725939A CN101792854B (en) | 2009-11-17 | 2009-11-17 | Desorption technology for gold-loaded carbon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101792854A CN101792854A (en) | 2010-08-04 |
| CN101792854B true CN101792854B (en) | 2011-07-20 |
Family
ID=42585768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101725939A Active CN101792854B (en) | 2009-11-17 | 2009-11-17 | Desorption technology for gold-loaded carbon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101792854B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104087747B (en) * | 2014-04-21 | 2017-07-14 | 云南黄金矿业集团股份有限公司 | The method that valuable metal is desorbed from gold loaded carbon |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213007A (en) * | 1998-08-24 | 1999-04-07 | 李文建 | Method and system for extracting noble metal adsorbed on active carbon |
| CN1230600A (en) * | 1998-03-26 | 1999-10-06 | 陈希龙 | Technological process of desorbing electrolytic gold from gold-carrying carbon |
-
2009
- 2009-11-17 CN CN2009101725939A patent/CN101792854B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1230600A (en) * | 1998-03-26 | 1999-10-06 | 陈希龙 | Technological process of desorbing electrolytic gold from gold-carrying carbon |
| CN1213007A (en) * | 1998-08-24 | 1999-04-07 | 李文建 | Method and system for extracting noble metal adsorbed on active carbon |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101792854A (en) | 2010-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106698338B (en) | A kind of liquid metal auxiliary aluminium block direct hydrogen production device and its application | |
| CN101597769B (en) | Normal temperature and pressure quick desorption electrolysis method of gold loaded carbon | |
| CN103626240B (en) | Lower concentration complexity prepares the method for ruthenium trichloride containing ruthenium waste liquid | |
| CN101792854B (en) | Desorption technology for gold-loaded carbon | |
| CN102610839A (en) | Safe and controllable portable power supply and control method | |
| CN103044285A (en) | Preparation of methyl ethyl ketazine by utilizing hydrogen peroxide method | |
| CN214496428U (en) | Feeding system for producing titanium sponge | |
| CN102583294A (en) | Method for producing sodium tripolyphosphate by replacing ammonium nitrate with sodium nitrate taken as catalyst | |
| CN201990481U (en) | Concentration device for dilute hydrochloric acid | |
| CN105524006A (en) | Energy-saving environment-friendly co-production process of cyanuric acid, food-grade sulfuric acid and sulfamic acid | |
| CN104310441A (en) | Reaction heat comprehensive utilization system and reaction heat comprehensive utilization method in coproduction of potassium nitrate and ammonium chloride | |
| CN206767961U (en) | A kind of 1,4 dichloroetane synthesis systems | |
| CN105400754A (en) | High-valued comprehensive utilizing method for traditional Chinese medicine residues rich in cellulose matter | |
| CN101402552A (en) | Method for producing m-cresol with direct hydrolyzation | |
| CN104477939B (en) | Low-pressure hydrolysis technology | |
| CN101717280A (en) | Method for preparing potassium-ammonium sulfate from sulfuric acid and ammonia water reclaimed in coking | |
| CN201424388Y (en) | Urea process wastewater recovering device | |
| CN202175720U (en) | Electrolytic bath with nitrogen cooling function | |
| CN202754919U (en) | 1, 4-butynediol stripping tower top steam latent heat recycle device | |
| CN206051968U (en) | Marsh gas purifying device | |
| CN104651878B (en) | Alkali lye deaerating plant and alkali lye continuously deoxidizing device and its application method | |
| CN201644073U (en) | Oxy-hydrogen generating device | |
| CN203052998U (en) | Liquid ammonia vaporizer used in float glass production | |
| CN204178216U (en) | A kind of aquaculture inspection supervisory system of sun power couplings networking | |
| CN214496426U (en) | Device for producing titanium sponge by magnesium reduction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LINGBAO JINYUAN MINING CO., LTD. Free format text: FORMER NAME: LINGBAO CITY JINYUAN MINING CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 472500, Jincheng Road, Lingbao City, Henan, Sanmenxia 20 Patentee after: Lingbao Jinyuan Mining Co.,Ltd. Address before: 472500, Jincheng Road, Lingbao City, Henan Province, No. 20 Patentee before: Lingbao City Jinyuan Mining Co., Ltd. |