CN1069348C - Wet-metallurgical non-cyanogen process and its special equipment - Google Patents
Wet-metallurgical non-cyanogen process and its special equipment Download PDFInfo
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- CN1069348C CN1069348C CN97109149A CN97109149A CN1069348C CN 1069348 C CN1069348 C CN 1069348C CN 97109149 A CN97109149 A CN 97109149A CN 97109149 A CN97109149 A CN 97109149A CN 1069348 C CN1069348 C CN 1069348C
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Abstract
The present invention discloses a wet-metallurgical non-cyanogen process and special equipment thereof in gold industry. The process comprises: chlorine salt of alkali metal is electrolyzed in special electrolyzing equipment under the acidic condition, and the gold in ore is oxidized by the released active chlorine to generate gold trichloride. Further, chlorohydroauric acid is generated, adsorbed by ion-exchange resin, desorbed, acidified, burned and extracted to obtain the finished product of the gold. The process has the greatest characteristics of no environment pollution, low investment, short production period and high efficiency. Besides, the present invention can adapt to the wet metallurgy of the ore having complicated mineral components and containing the gold. Meanwhile, the present invention has very positive meanings for protecting natural ecological balance and developing mineral resources.
Description
The present invention relates to a kind of gold industry Wet-metallurgical non-cyanogen process and specific equipment thereof, be specifically related to a kind of in acidic electrolyte solution the electrolytic alkali metal chloride adsorb with ion exchange resin when generating the chlorine gold compound, thereby from Gold Ore or enrichment fine gold sand, extract the processing method and the special-purpose electrolyzer thereof of noble metals such as gold.
At present, gold and silver selects in the smelting hydrometallurgical processes, the main prussiate that uses severe toxicity, and the material of generation toxic in production operation, and the purifying treatment cost height of cyaniding waste, efficient is low, and environment is caused severe contamination.
The present invention is directed to the problem that exists in the traditional technology, proposed a kind of operational safety, environmentally safe, Wet-metallurgical non-cyanogen process that production cost is low, efficient is high and specific equipment thereof.
The proposition of this technology is based on the physicochemical property of gold and auribromide, and promptly gold can generate gold trichloride with the chlorine effect, and gold trichloride is water-soluble, through hcl acidifying, generates chloro hydrogen, and its reaction formula is as follows:
Therefore, use the propeller pump formula electrolyzer of special use of the present invention, in acidic electrolyte solution, earlier alkali metal chloride is carried out electrolysis in electrolyzer, the reactive chlorine that discharges generates gold trichloride with the golden oxidation in the ore, and then generates chloro hydrogen.Reaction formula is as follows:
In electrolyte solution, chloro hydrogen exists with ionic condition, promptly
Like this, add anionite-exchange resin, AuCL
4 -Being adsorbed, is example with the styrene type strongly basic anion exchange resin:
Carry golden resin through wash-out, must contain golden elutriant, through water-bath distillation, isolate AuCL
3Throw out promptly get slightly gold through the heating calcination, and is thick golden through acidifying, purification, the melting gold that gets product.
Its concrete processing step is as follows:
1. gold containing ore or enrichment ore deposit Jinsha are machined to+breeze about the 95-200 order is standby;
2. the basic metal villaumite that in electrolyzer, adds breeze weight 5-8% (weight percent), breeze weight 3-4 water doubly, stir evenly, add hydrochloric acid and adjust PH1.5-2.0, electrolysis 5-10 minute, add breeze again and reach activatory anionite-exchange resin, its consumption is the 3-5% (weight percent) of breeze weight, stirs electrolysis absorption 8-10 hour;
3. after electrolysis absorption finishes, isolate the golden resin that carries in the ore pulp;
4. carry golden resin and adopt acetone: hydrochloric acid: water=eluent carried out wash-out in 7.5: 1: 1.5, must contain golden elutriant, and the elutriant consumption is 3 times of resin volume;
5. contain golden elutriant through water-soluble distillation, isolate AuCL
3Throw out, promptly thick gold;
6. thick gold melting after acidifying, calcination, purification gets product.
Above-mentioned basic metal villaumite can be NaCL, KCL, MgCL
2In any.
Anionite-exchange resin can use homemade styrene type strong basicity negative resin 717 or 711, and the activation of resin and regeneration are carried out according to a conventional method.
This implementation of processes example is described in detail in detail below.
Embodiment 1:
1. the ore that with Gold Content is 30.5 gram/tons is machined to+and breeze about the 95-200 order is standby;
2. add 50kgNaCL by dog-house, 3000kg water starts and stirs evenly, and adds hydrochloric acid and transfers PH1.5, and electrolysis 5 minutes adds 1000kg breeze and activatory 717 anionite-exchange resin 30kg again, stirs electrolysis and adsorbs 8 hours;
3. after electrolysis absorption finishes, sieve out the golden resin that carries in the ore pulp with the oscillatory type shaking table;
4. carry golden resin and adopt acetone: hydrochloric acid: water=eluent carried out wash-out in 7.5: 1: 1.5, must contain golden elutriant;
5. contain golden elutriant through water-bath distillation, isolate AuCL
3Throw out;
6. thick gold melting after acidifying, calcination, purification, golden 28.0g gets product.
Embodiment 2:
1. get+95-200 order Gold Content is that the fine gold sand 1000kg of 60g/t is standby;
2. add 80kgKCL by dog-house, 4000kg water starts and stirs evenly, and adds hydrochloric acid and adjusts PH2.0, and electrolysis 10 minutes adds the 1000kg breeze again and reaches activatory 711 anionite-exchange resin 50kg, whip attachment 10 hours;
3. after electrolysis absorption finishes, sieve out the golden resin that carries in the ore pulp;
4. carry golden resin and adopt acetone: hydrochloric acid: water=eluent carried out wash-out in 7.5: 1: 1.5, must contain golden elutriant;
5. contain golden elutriant through water-bath distillation, isolate AuCL
3Throw out;
6. thick gold melting after acidifying, calcination, purification, golden 57.5g gets product.
Embodiment 3:
1. the ore that with Gold Content is 70 gram/tons is machined to+and breeze about the 95-200 order is standby
2. add 40kgMgCL by dog-house, 3000kg water starts and stirs evenly, and adds hydrochloric acid and transfers PH1.5, and electrolysis 8 minutes adds 1000kg breeze and activatory 717 anionite-exchange resin 40kg again, stirs electrolysis and adsorbs 8 hours;
3. after electrolysis absorption finishes, sieve out the golden resin that carries in the ore pulp with the oscillatory type shaking table;
4. carry golden resin and adopt acetone: hydrochloric acid: water=eluent carried out wash-out in 7.5: 1: 1.5, must contain golden elutriant;
5. contain golden elutriant through water-bath distillation, isolate AuCL
3Throw out;
6. thick gold melting after acidifying, calcination, purification, golden 66.5g gets product.
Employed axial-flow type electrolyzer among the present invention, has the taper cell body, the cell body inwall adheres to the electro-insulating rubber lining, be provided with positive plate in the cell body, negative plate reaches and positive plate, the positive wire that negative plate links to each other, the cathode lead, positive wire, cathode wire is tied mutually with the rectifier positive and negative electrode respectively, upper part of the electrolytic cell is provided with opening for feed, driving part and supporting part, the bottom is provided with discharge port, the principal feature of this equipment is: cell body middle part is provided with a centre pipe that is hollow Cylinder, stir shaft inserts in the centre pipe, its negative plate, positive plate is all curved, divide independently several piece separately, vertically place the cell wall insulating bushing to take up negative plate and centre pipe middle part respectively, equidistant between the every plates of similar polarity, equidistant between positive plate and negative plate and positive plate and the centre pipe, centre pipe, stir shaft and the moon, positive plate all with electrolyzer with the garden heart; Do fastening connection with non-insulating material respectively between centre pipe and the negative plate, every positive plate is to do fastening connection between insulating material and negative plate, the centre pipe.
The driving part of above-mentioned electrolyzer mainly is meant the motor and the belt pulley of control stir shaft, and supporting part is meant the support of support driving part and the non-insulating material and the insulating material of supporting centre pipe, negative plate and positive plate.
Overflow when preventing flowsheet of slurry agitation, also be provided with shield cap in the above-mentioned electrolyzer, it is garden shape, and centering conduit upper end is fixed on the stir shaft.
Electrolyzer among the present invention is in working order the time, convert electrical energy into chemical energy, electric current is in silicon-controlled rectifier input electrolyzer, electrolytic alkali metal villaumite, separate out reactive chlorine, produce activation energy, the precious metal in the oxidized ore, generate the metallic compound of chlorine, thereby realize Wet-metallurgical non-cyanogen process among the present invention.
This propeller pump formula electrolyzer is different from common electrolyzer part and is that (1) has centre pipe.Centre pipe can be used as negative electrode at this, and it makes the contact surface increase of ore pulp and electrode make electrolytic reaction more complete, more abundant, has improved electrolytic efficiency greatly, has promoted the activation of ore pulp.(2) has stirring.Because the effect of stirring, make that sharp impacts has improved the efficient of ion-exchange between ore pulp and the resin, simultaneously, make ore pulp and resin be suspended in solution and the unlikely bottom land that is deposited on.
Because therefore the advance of the present invention on Processes and apparatus, compared with traditional cyanide process, has the following advantages:
(1) do not use hypertoxic chemical reagent, help environment protection and safety in production.Because its tail washings and slag are handled convenient, economical, only need to make acid-base neutralisation with the liming of cheapness, cost reduces greatly.
(2) reduced investment, with short production cycle, the efficient height, this technology rate of recovery can reach 85-95%, and the production cycle shorten to about 24 hours, and traditional technology needs 3-7 days.
(3) in the electrolytic chlorination process, be not subjected to arsenic, sulphur, silicon, antimony etc. to be unfavorable for that the material of the leaching of gold disturbs, be suitable for the comparatively hydrometallurgy of complicated gold containing ore of mineral constituent.
The embodiment of electrolyzer among the present invention is described in detail in detail below in conjunction with accompanying drawing.
Fig. 1 is the A-A direction sectional view of electrolyzer among the present invention.
Fig. 2 is the vertical view of electrolyzer among Fig. 1, also is one embodiment of the present of invention.
Among Fig. 1,1 is the taper cell body, 2 is cell body inwall insulating bushing, adopt the thick electro-insulating rubber of 2.5MM to be bonded in the groove inwall in the present embodiment, 3 is positive plate, adopt three of graphite tubing processing and fabricatings in the present embodiment, every arc length 1000MM, height 1800MM, three blocks of positive plates insulating materials and cloudy plate plates, fixed connection between the centre pipe, 4 is cloudy plate plate, adopt stainless steel materials to make three in the present embodiment, every arc length 1570MM, height 2400MM, conduit centered by 5, be hollow Cylinder, make with the stainless steel pipe that 3MM is thick, centre pipe 5 is apart from cylinder bottom 300MM, at its lower end 500MM, upper end 300MM sentences 6 STAINLESS STEEL WIREs and divides with minus plate respectively, lower each 3 are 120 degree and make tight joint, and shaft 6 inserts in the central tubes, and belt pulley 7 is installed in its upper end, fixing with bearing support 8 supportings, 300MM place, central tube upper end is fixed with protective cover 9, and cell body top is provided with charging aperture 10, and the bottom arranges discharging opening 11, spacing between positive plate 3 and minus plate 4 and the centre pipe 5 is 365MM, spacing between positive plate and the positive plate is 320MM, and the spacing between minus plate and the minus plate is 520MM, positive wire 12, cathode wire 13 is respectively with the positive pole of silicon rectifier, negative pole connects.
During the work of this equipment, the pump shaft rotating speed is 1080 rev/mins, power of motor 10KW, and tank voltage 13V, current density is 300-320A/M2。
Claims (4)
1. electrolysis-absorption gold extraction technology mainly comprises the steps:
A. with the breeze about gold containing ore or enrichment ore deposit gold sand pre-treatment one-tenth+95-200 order;
What B. add breeze weight 5-8% in electrolyzer is selected from NaCl, KCl and MgCl
2In a kind of villaumite, add breeze weight 3-4 water doubly, stir evenly, add hydrochloric acid and adjust PH1.5-2.0, electrolysis 5-10 minute, add breeze and activatory anionite-exchange resin again, its consumption is the 3-5% of breeze weight, stirs electrolysis absorption 8-10 hour;
C. isolate the golden resin that carries in the ore pulp;
D. carrying golden resin adopts the eluent of following weight ratio to carry out wash-out, acetone: hydrochloric acid: water=7.5: 1: 1.5, must contain golden elutriant, and the eluent consumption is 3 times of resin volume;
E. contain golden elutriant through water-bath distillation, isolate thick gold, the melting after acidifying, calcination, purification of thick gold, gold gets product.
2. electrolysis according to claim 1-absorption gold extraction technology is characterized in that described anionite-exchange resin can use homemade styrene type strong basicity negative resin;
3. special-purpose propeller pump formula electrolyzer in electrolysis-absorption gold extraction technology, has the taper cell body, the cell body inwall adheres to the electro-insulating rubber lining, be provided with positive plate in the cell body, negative plate reaches and positive plate, the positive wire that negative plate links to each other, cathode wire, positive wire, cathode wire is tied mutually with the silicon rectifier positive and negative electrode respectively, upper part of the electrolytic cell is provided with opening for feed, driving part and supporting part, the bottom is provided with discharge port, it is characterized in that: cell body middle part is provided with a centre pipe that is hollow Cylinder, stir shaft inserts in the centre pipe, its negative plate, positive plate is all curved, divide independently several piece separately, vertically place the cell wall insulating bushing to take up negative plate and centre pipe middle part respectively, equidistant between the every plates of similar polarity, equidistant between positive plate and negative plate and positive plate and the centre pipe, centre pipe, stir shaft and the moon, positive plate all with electrolyzer with the garden heart; Do fastening connection with non-insulating material respectively between centre pipe and the negative plate, every positive plate is to do fastening connection between insulating material and negative plate, the centre pipe;
4. propeller pump formula electrolyzer according to claim 3 is characterized in that: comprise that also one is arranged at the centre pipe upper end, be fixed on the circular shield cap on the stir shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97109149A CN1069348C (en) | 1997-06-23 | 1997-06-23 | Wet-metallurgical non-cyanogen process and its special equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97109149A CN1069348C (en) | 1997-06-23 | 1997-06-23 | Wet-metallurgical non-cyanogen process and its special equipment |
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| CN1203280A CN1203280A (en) | 1998-12-30 |
| CN1069348C true CN1069348C (en) | 2001-08-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371478C (en) * | 2006-02-11 | 2008-02-27 | 欧华北 | Wet preprocessing method for difficult-to-treat gold ore containing arsenic and antimony |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109536737B (en) * | 2018-10-22 | 2020-09-29 | 赤峰柴胡栏子黄金矿业有限公司 | Resin ore pulp leaching and adsorbing system and method |
| CN115595451A (en) * | 2022-09-23 | 2023-01-13 | 安徽皖东树脂科技有限公司（Cn） | Method for recovering gold from gold-plating wastewater |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1009335B (en) * | 1986-06-05 | 1990-08-29 | 联合公司 | Bipolar membrane and method for producing same |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1009335B (en) * | 1986-06-05 | 1990-08-29 | 联合公司 | Bipolar membrane and method for producing same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371478C (en) * | 2006-02-11 | 2008-02-27 | 欧华北 | Wet preprocessing method for difficult-to-treat gold ore containing arsenic and antimony |
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| CN1203280A (en) | 1998-12-30 |
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