CN1058996A - Noble liquid cyanide is with the direct electrolysis gold extraction technology of steel wool - Google Patents
Noble liquid cyanide is with the direct electrolysis gold extraction technology of steel wool Download PDFInfo
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- CN1058996A CN1058996A CN 90106928 CN90106928A CN1058996A CN 1058996 A CN1058996 A CN 1058996A CN 90106928 CN90106928 CN 90106928 CN 90106928 A CN90106928 A CN 90106928A CN 1058996 A CN1058996 A CN 1058996A
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- cyanide
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Abstract
Noble liquid cyanide comprises noble liquid cyanide purifying treatment, noble liquid cyanide electrolysis with the direct electrolysis gold extraction technology of steel wool, carries golden steel wool acid treatment, solid-liquid separation, technologies such as gold mud melting.The invention is characterized in that the noble liquid cyanide purifying treatment at first adopts the pressure filter press filtration, and then ooze the method that purifying box purifies through sand.Its electrolysis process is at current density: 12～22A/m
2Bath voltage: 3～4.5V; Same pole span: 55～70mm; Carry out under the condition of electrolyte flow rate: 130～180l/h.This technology electrolytic efficiency height, cost is low, when your liquid concentration is low, obtains the electrolytic deposition index about 97%, and can directly apply to suitability for industrialized production.
Description
The invention belongs to a kind of electrolytic process and produce the technology of precious metal, relate to a kind of noble liquid cyanide with the direct electrolysis gold extraction technology of steel wool.
On in 1988 third phase " gold " monthly magazine, disclose a kind of " with the direct electrolysis gold extraction technology of steel wool.It is with cyaniding leach your liquid through three-tray thickener countercurrent washing overflow to your liquid pool, again through electrolysis, obtain gold mud to carrying a golden steel wool acid treatment, solid-liquid separation and sodium-chlor washing process.Show that by small-scale test and semi-industrial scale test this technology is compared with traditional zinc silk replacing process has the rate of recovery height that technology is simple, cost is low, golden.And cyanide barren solution can return and leach to use, and effectively utilized CN
-, reduce the processing and the pollution of sewage.But because in existing " with the direct electrolysis gold extraction technology of steel wool ", the purifying treatment that is adopted can not make the removal of organic medicament suspended substance in the noble liquid cyanide and gluey particle, ore pulp reach desirable requirement, the existence of these impurity, influenced electrolytic efficiency, moreover, because the selection of electrolytic process parameter is not suitable for industrial requirement, make " with the direct electrolysis gold extraction technology of steel wool " fail so far in industrial production, to apply.
The objective of the invention is to overcome shortcoming of the prior art, adopt effective purifying treatment method, remove cyaniding and leach impurity contained in your liquid, improve electrolytic process parameter, thereby can directly apply to industrial production.
Technical solution of the present invention is to adopt cyaniding to leach the electrolysis process of your liquid purifying treatment, noble liquid cyanide, year golden steel wool acid treatment, solid-liquid separation process, and the CN lean solution that contains after the electrolysis is directly returned the cyaniding leaching.It is characterized in that your liquid purifying treatment cyaniding leach at first by the pressure filter press filtration, ooze purifying box through sand then and purify and finish that electrolysis process is in current density: 12～22A/m
2, bath voltage: 3～4.5V, carry out under the condition of same pole span: 55～70mm, electrolyte flow rate 130～180L/h.
The present invention compared with prior art have electrolytic efficiency height, cost low, under the lower situation of your liquid concentration, can obtain about 97% electrolytic deposition index ， And and, the present invention can directly apply to industrial production.
With embodiment the present invention is further described below:
At first cyaniding is leached your liquid input pressure filter press filtration, oozing purifying box by sand again purifies, obtain wherein ore pulp, organic medicament suspended substance and the extremely low noble liquid cyanide of gluey particle content, then noble liquid cyanide input electrolyzer is carried out electrolysis, in the last anticathode frame carry a golden steel wool carry out pickling take off, through solid-liquid separation and sodium-chlor washing, melting, what obtain 85% gold containing material and 98% closes matter silver.Electrolyzer is formed by separating groove, anode, negative electrode etc.Cell dimension is 1400 * 400 * 550mm, totally 10, per 2 electrolyzers are concatenated into one group, 17 positive plates and 16 negative electrode frames are housed in each electrolyzer, positive plate is made by the porous stainless steel plate, the negative electrode frame is made by the porous polyethylene plate, 50～100 gram steel wools are housed in each negative electrode frame, with pole span is 70mm, positive plate is connected with the positive and negative electrode of power supply respectively with the negative electrode frame, its electric current and voltage can be regulated continuously, and the electrolytic process of noble liquid cyanide in electrolyzer is successive, and its electrolytic process parameter is:
Day output: 20m
3/ d
Flow velocity: 130～180L/h
Current density: 12～22A/m
2
Bath voltage: 3～4.5V
At your flow velocity is under 150～160L/h condition, and when changing bath voltage: electrolytic deposition rate situation is as shown in the table:
| Bath voltage (V) | Sequence number | Current density (A/m 2) | Your liquid contains gold (g/m 3) | Lean solution contains gold (g/m 3) | Operation electrodeposition rate (%) |
| 3.0 | 1 2 3 | 12.71 | 12.43 13.15 12.32 | 0.80 0.73 0.82 | 93.56 94.45 93.34 |
| 3.5 | 1 2 3 | 18.06 | 15.32 16.65 14.32 | 0.50 0.48 0.54 | 96.74 97.12 96.23 |
| 4.0 | 1 2 3 | 21.74 | 14.02 13.53 15.68 | 0.51 0.60 0.49 | 96.36 95.57 96.88 |
Under the bath voltage permanence condition, when changing electrolyte flow rate, electrolytic deposition rate situation is as shown in the table:
| Flow velocity (L/h) | Sequence number | Bath voltage (V) | Your liquid contains gold (g/m 3) | Lean solution contains gold (g/m 3) | Operation electrodeposition rate % |
| 130－ 140 | 1 2 3 | 3.5 | 18.76 16.87 20.05 | 0.48 0.48 0.41 | 97.44 97.15 97.96 |
| 150－ 160 | 1 2 3 | 3.5 | 15.32 16.65 14.32 | 0.50 0.48 0.54 | 96.74 97.12 96.23 |
| 170－ 180 | 1 2 3 | 3.5 | 13.89 9.53 9.33 | 0.68 0.95 0.98 | 95.10 90.03 89.50 |
Can learn from above-mentioned electrolytic deposition result, at bath voltage 3.5V, your flow velocity 150～160L/h, your liquid grade is at 15g/m
3About condition under, can obtain the electrolytic deposition index about 97%.
In electrolytic process, the CN of your liquid and lean solution
-Concentration does not change, and therefore, lean solution can directly be returned use, thereby reduced sewage disposal and to the pollution of environment, electrolysis process is a successive production process, and 16 negative electrode frames in each electrolyzer were handled preceding 2～4 every 5～7 days and got final product, and needn't all handle.
Claims (2)
1, a kind of noble liquid cyanide is with the direct electrolysis gold extraction technology of steel wool, comprises that cyaniding leaches the electrolysis of your liquid purifying treatment, noble liquid cyanide, carries golden steel wool acid treatment, solid-liquid separation, gold mud melting technology, it is characterized in that:
(1) your liquid purifying treatment cyaniding is leached and is at first adopted the pressure filter press filtration, and then oozes the purifying box purification through sand,
(2) electrolysis process carries out under the following conditions:
Current density: 12～22A/m
2
Bath voltage: 3～4.5V
Same pole span: 55～70mm
Electrolyte flow rate: 130～180L/h
2, gold extraction technology according to claim 1 is characterized in that being equipped with in the electrolysis cathode 50～100 gram steel wools.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106928 CN1058996A (en) | 1990-08-09 | 1990-08-09 | Noble liquid cyanide is with the direct electrolysis gold extraction technology of steel wool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106928 CN1058996A (en) | 1990-08-09 | 1990-08-09 | Noble liquid cyanide is with the direct electrolysis gold extraction technology of steel wool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1058996A true CN1058996A (en) | 1992-02-26 |
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ID=4880339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90106928 Pending CN1058996A (en) | 1990-08-09 | 1990-08-09 | Noble liquid cyanide is with the direct electrolysis gold extraction technology of steel wool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1058996A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051809C (en) * | 1995-07-06 | 2000-04-26 | 青岛大学 | Gold extracting method by recovery |
| CN104120265A (en) * | 2014-06-18 | 2014-10-29 | 厦门紫金矿冶技术有限公司 | Method for recovering gold and copper from copper-containing cyanation pregnant solution |
| CN105177287A (en) * | 2015-07-24 | 2015-12-23 | 长春黄金研究院 | Method for desorption and gold extraction in flotation technology |
| CN108004399A (en) * | 2017-11-23 | 2018-05-08 | 长春黄金研究院 | Gravity treatment Gold Concentrate under Normal Pressure fluidization Cyanide Leaching-electrolysis obtains the device and method of gold mud |
-
1990
- 1990-08-09 CN CN 90106928 patent/CN1058996A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051809C (en) * | 1995-07-06 | 2000-04-26 | 青岛大学 | Gold extracting method by recovery |
| CN104120265A (en) * | 2014-06-18 | 2014-10-29 | 厦门紫金矿冶技术有限公司 | Method for recovering gold and copper from copper-containing cyanation pregnant solution |
| CN104120265B (en) * | 2014-06-18 | 2016-06-22 | 厦门紫金矿冶技术有限公司 | The method of gold recovering copper from cupric noble liquid cyanide |
| CN105177287A (en) * | 2015-07-24 | 2015-12-23 | 长春黄金研究院 | Method for desorption and gold extraction in flotation technology |
| CN108004399A (en) * | 2017-11-23 | 2018-05-08 | 长春黄金研究院 | Gravity treatment Gold Concentrate under Normal Pressure fluidization Cyanide Leaching-electrolysis obtains the device and method of gold mud |
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