CN104152702B - A kind of method of smelting lead anode slurry - Google Patents
A kind of method of smelting lead anode slurry Download PDFInfo
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- CN104152702B CN104152702B CN201410429759.1A CN201410429759A CN104152702B CN 104152702 B CN104152702 B CN 104152702B CN 201410429759 A CN201410429759 A CN 201410429759A CN 104152702 B CN104152702 B CN 104152702B
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Abstract
The invention discloses a kind of method of smelting lead anode slurry, comprise lead anode slurry pyritic smelting under excess oxygen, fully oxidized, thus destroy the structure of lead anode slurry, obtain the first lead alloy; Described first lead alloy is removed arsenic wherein by basic refining under excess oxygen, obtains the second lead alloy; Blow described second lead alloy under excess oxygen removing antimony wherein, obtains precious metals containing lead; By described precious metals containing lead electrolysis, obtain the argentalium anode sludge of argentiferous quality >=80%; The argentalium anode sludge of described argentiferous quality >=80% is obtained the high purity silver of argentiferous quality >=96% by retailoring and electrolysis.Method provided by the invention makes the harmful element arsenic in lead anode slurry be removed, and the process of pressure brick can be carried out to it and obtain innoxious laying bricks, can also make high-content antimony wherein in oxygen enrichment, in warm converting process, obtain the grade stibium trioxide of more than 99%, more progressively obtain 99.99% high purity silver through precious metals containing lead electrolysis, retailoring, silver-colored electrolysis.
Description
Technical field
The present invention relates to Metal smelting technical field, be specifically related to a kind of method of smelting lead anode slurry.
Background technology
At present, in domestic and international lead anode slurry, the content of arsenic antimony is more and more higher, adopts existing lead anode slurry technique all can produce a large amount of high arsenic antimony ash in process of production, adds the difficulty of comprehensively recovering valuable metal, and cause very large harm to environment.In order to reduce environmental pollution particularly arsenic pollution, and high-content antimony in comprehensive utilization lead anode slurry, develop multiple lead anode slurry smelting technology, but these technique major parts all can not get the problems such as comprehensive utilization and face the challenge owing to there is operating environment difference, seriously polluted, production cycle long, valuable metal.
Summary of the invention
In view of this, the object of the invention is to the method proposing to smelt lead anode slurry, to improve the recovery utilization rate of metal in lead anode slurry.
Based on above-mentioned purpose, the method for smelting lead anode slurry provided by the invention comprises the following steps:
By lead anode slurry pyritic smelting under excess oxygen, fully oxidized, thus destroy the structure of lead anode slurry, obtain the first lead alloy;
Described first lead alloy is removed arsenic wherein by basic refining under excess oxygen, obtains the second lead alloy;
Blow described second lead alloy under excess oxygen removing antimony wherein, obtains precious metals containing lead;
By described precious metals containing lead electrolysis, obtain the argentalium anode sludge of argentiferous quality >=80%;
The argentalium anode sludge of described argentiferous quality >=80% is obtained the high purity silver of argentiferous quality >=96% by retailoring and electrolysis.
Preferably, the method for described smelting lead anode slurry comprises the following steps:
1) by lead anode slurry smelting temperature be 800 ~ 1000 DEG C, blast containing oxygen volume fraction be 25 ~ 30%, flow is 1000 ~ 1500m
3/ (m
2﹒ h) oxygen enrichment condition under melting 3 ~ 7 hours, obtain the first lead alloy, slag and cigarette ash;
2) in described first lead alloy, add sheet alkali, and smelting temperature be 400 ~ 500 DEG C, blast containing oxygen volume fraction be 25 ~ 30%, flow is 1000 ~ 1500m
3/ (m
2﹒ h) oxygen enrichment condition under refining 2 ~ 3 hours, obtain arsenic slag and the second lead alloy;
3) by described second lead alloy smelting temperature be 600 ~ 800 DEG C, blast containing oxygen volume fraction be 25 ~ 40%, flow is 2100 ~ 2500m
3/ (m
2﹒ h) oxygen enrichment condition under melting 2 ~ 3 hours, obtain stibium trioxide and precious metals containing lead;
4) described precious metals containing lead obtains the argentalium anode sludge of electricity lead and argentiferous quality >=80% again through electrolysis;
5) the argentalium anode sludge of described argentiferous quality >=80% is obtained thick silver and lead skim through retailoring again;
6) described thick silver is carried out electrolysis, obtain the high purity silver of argentiferous quality >=96%.
Preferably, in described step 1) in, slag returns plumbous smelting system, and cigarette ash Returning smelting system, blasts melting pot together with oxygen enrichment.
Preferably, described step 2) in, add to arsenic slag the jelling agent that middle addition is 1/1000 ~ 3/1000, arsenic slag presses brick through overcuring, obtains building block.
Alternatively, described gelifying agent is selected from least one in cement, flyash, river sand and trolamine.
Alternatively, in described step 5) in, lead skim Returning smelting system, with step 1) in pyritic smelting together with lead anode slurry.
Preferably, described alkali add-on is 1 ~ 2 times of consumption of theoretical value, becomes light grey to arsenic slag surface.
Preferably, described precious metals containing lead electrolytic condition is:
Strength of current: 3500 ~ 4000A;
Current density: 150 ~ 180A/m
2;
Electrolytic solution Chemical Composition: total acid (SiF
4 2-): 100 ~ 180g/l, Pb
2+: 55 ~ 120g/l, Ag≤0.001g/l, Pb≤0.002g/l, Cu≤0.002g/l, Sb≤0.8g/l, Fe≤4g/l, F≤8g/l, amino acid: 5 ~ 22g/l;
Additive amount: gelatine: 2kg/t separates out lead, and β-Nai phenol: 0.008kg/t separates out lead, and yellow lead: 7.5kg/t separates out lead;
Electrolyte temperature: 40 DEG C ~ 50 DEG C;
Circulation of elecrolyte amount: (20 ~ 40) L/min groove;
Same pole span: 90mm;
Cycle: negative electrode, anode are all 96h;
Bath voltage: 0.35 ~ 0.5V.
Preferably, the condition of described retailoring is:
Fire box temperature: 1000 DEG C ~ 1200 DEG C;
Top hole pressure :-10Pa ~-20Pa.
Preferably, the condition of described thick silver-colored electrolysis is:
Anodic cycle: 45 ~ 48h;
Electrolyte component: Ag:80 ~ 120g/L, HNO
3: 6 ~ 8g/L, Cu≤20g/L, Bi≤1.0g/L, Te≤0.03g/L;
Strength of current: 500 ~ 700A current density: 250 ~ 350A/m
2;
Bath voltage: 2.5 ~ 3V;
Same interpole gap: 200mm;
The material ratio of silver electrolyte preparation: fine silver powder: nitric acid: the weight ratio=1:1:1 of water; Reaction times: 4h; New electrolyte component: Ag≤600g/L, HNO
3≤ 50g/L;
Washing silver powder terminal: washing is to colourless anacidity;
Residual anode ratio :≤12%.
As can be seen from above, the method of smelting lead anode slurry provided by the invention take lead anode slurry as raw material, adopt the techniques such as pyritic smelting, basic refining, the blowing of middle temperature, harmful element arsenic in lead anode slurry is removed, and the process of pressure brick can be carried out to it and obtain innoxious laying bricks, can also make high-content antimony wherein in oxygen enrichment, in warm converting process, obtain the grade stibium trioxide of more than 99%, more progressively obtain 99.99% high purity silver through precious metals containing lead electrolysis, retailoring, silver-colored electrolysis.
Therefore, the method for smelting lead anode slurry provided by the invention has the following advantages:
1) the present invention to some extent solves the problem that harmful element arsenic pollutes, arsenic in lead anode slurry is separated and has carried out the harmless process of solidification and laid bricks, lay bricks and be greater than slag brick be about less than common brick through detecting its intensity, the strength grade of laying bricks is Mu7.5, lay bricks and detect its stability through acid-basicity water and also reach material of construction standard, namely acid-basicity detects not containing arsonium ion in water after soaking two weeks, and this is laid bricks and can be used as material of construction use.
2) the present invention produces the grade stibium trioxide of more than 99% in oxygen enrichment in warm converting process, successfully directly reclaim the antimony of the high amount of being rich in lead anode slurry, thus directly define grade stibium trioxide product, and improve the rate of recovery of Preparation of Silver From Lead Anodic Slime while creating profit.
3) the present invention is with low cost, flow process is simple, and compare traditional melting blowing technology, the present invention reduces 10% on cost, and silver-colored direct yield is up to more than 96% (compare traditional technology and improve 2 ~ 3%).
Accompanying drawing explanation
Fig. 1 is the process flow sheet that the embodiment of the present invention smelts lead anode slurry.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
Embodiment 1
See Fig. 1, it is the process flow sheet of embodiment of the present invention smelting lead anode slurry.As one embodiment of the present of invention, the method for described smelting lead anode slurry comprises the following steps.
1, get lead anode slurry 3 tons, smelting temperature be 850 DEG C, blast containing oxygen volume fraction be 27%, flow is 1200m
3/ (m
2﹒ h) oxygen enrichment condition under pyritic smelting 4 hours (namely under the logical oxygen condition of heating, lead anode slurry is understood oneself heating and is helped its melting, reduce melting requirement), thus destroy the structure of most elements in lead anode slurry, obtain the first aluminium alloy, slag and cigarette ash respectively.Further, this slag can return plumbous smelting system, and cigarette ash can Returning smelting system, blasts melting pot together with oxygen enrichment.
Wherein, the dried material component of described lead anode slurry is (in massfraction): plumbous: 8.54%, arsenic: 5.38%, antimony: 38.91%, silver: 6.5824%, gold: 67g/t, bismuth: 9.60%.
2, in described first lead alloy, sheet alkali is added, sheet alkali add-on is 1.5 times of consumptions of theoretical value (arsenic and sheet alkali generate 5 valency arsenate desirable tablet alkali numbers), become light grey to arsenic slag surface and stable color (variable color stable after namely dearsenification is substantially complete), then smelting temperature be 450 DEG C, blast containing oxygen volume fraction be 27%, flow is 1200m
3/ (m
2﹒ h) oxygen enrichment condition under refining 2 hours, obtain arsenic slag and the second lead alloy.Further, this arsenic slag can press brick through overcuring, obtains building block.
Preferably, the solidification pressure brick condition of this arsenic slag is: the jelling agent added in arsenic slag, solidification pressure brick obtains building block.Preferably, the addition of described gelifying agent is the thousandth of arsenic slag amount.Wherein, gelifying agent can be selected from least one in cement, flyash, river sand and trolamine.
3, by described second lead alloy smelting temperature be 700 DEG C, blast containing oxygen volume fraction be 33%, flow is 2200m
3/ (m
2﹒ h) oxygen enrichment condition under melting 2 hours, obtain the product hierarchy stibium trioxide containing antimonous oxide more than 99% and precious metals containing lead.
4, described precious metals containing lead obtains electric lead and the high argentalium anode sludge through electrolysis again.
Preferably, described precious metals containing lead electrolytic condition is:
Strength of current: 3500 ~ 4000A;
Current density: 150 ~ 180A/m
2;
Electrolytic solution Chemical Composition: total acid (SiF
4 2-): 100 ~ 180g/l, Pb
2+: 55 ~ 120g/l, Ag≤0.001g/l, Pb≤0.002g/l, Cu≤0.002g/l, Sb≤0.8g/l, Fe≤4g/l, F≤8g/l, amino acid: 5 ~ 22g/l;
Physical specification: lead electrolytic solution answers the limpid no-sundries of outward appearance;
Additive amount: gelatine: 2kg/t separates out lead, and β-Nai phenol: 0.008kg/t separates out lead, and yellow lead: 7.5kg/t separates out lead;
Electrolyte temperature: 40 DEG C ~ 50 DEG C;
Circulation of elecrolyte amount: (20 ~ 40) L/min groove;
Same pole span: 90mm;
Cycle: negative electrode, anode are all 96h;
Bath voltage: 0.35 ~ 0.5V.
5, the described high argentalium anode sludge is obtained thick silver and lead skim through retailoring again.Further, described lead skim can Returning smelting system, pyritic smelting together with lead anode slurry in step 1.
Preferably, the condition of described retailoring is:
Fire box temperature: 1000 DEG C ~ 1200 DEG C;
Treatment capacity: 200 bag/skies (40 ~ 50kg)/bag;
Top hole pressure :-10Pa ~-20Pa.
6, described thick silver is carried out electrolysis, obtain high purity silver.
Preferably, the condition of described thick silver-colored electrolysis is:
Anodic cycle: 45 ~ 48h;
Electrolyte component (g/L): Ag:80 ~ 120, HNO
3: 6 ~ 8, Cu≤20, Bi≤1.0, Te≤0.03;
Strength of current: 500 ~ 700A current density: 250 ~ 350A/m
2;
Bath voltage: 2.5 ~ 3V;
Same interpole gap: 200mm;
Positive plate specification: 450 × 260 × 135/groove; Negative plate specification: 500 × 350 × 36/groove material: titanium plate;
The discontinuous cycle of electrolytic solution: 4 ~ 6 times/class;
The material ratio of silver electrolyte preparation: fine silver powder: nitric acid: water=1:1:1 (weight ratio); Reaction times: 4h; New electrolyte component: Ag≤600g/L, HNO
3≤ 50g/L;
Electrolytic solution mechanical stirring: 20 ~ 22 times/min;
Washing silver powder terminal: washing is to colourless anacidity;
Residual anode ratio :≤12%.
The slag obtained in above-mentioned steps, building block, grade stibium trioxide, electricity is plumbous, and the elemental composition of high purity silver and direct yield are in table 1 (slag specimen is all dry weight).
Table 1
| Title | Weight | Plumbous % | Arsenic % | Antimony % | Silver % | Each major metal direct yield % |
| Slag | 174Kg | 2.19 | ||||
| Building block | 770Kg | 19.5 | ||||
| Grade stibium trioxide | 1.35t | 83.51 | Antimony direct yield 96.57 | |||
| Electricity is plumbous | 234Kg | 99.99 | ||||
| High purity silver | 190.4Kg | 99.99 | Silver direct yield 96.41 |
Embodiment 2
See Fig. 1, it is the process flow sheet of embodiment of the present invention smelting lead anode slurry.As another embodiment of the present invention, the method for described smelting lead anode slurry comprises the following steps.
1, get lead anode slurry 3 tons, smelting temperature be 900 DEG C, blast containing oxygen volume fraction be 30%, flow is 1300m
3/ (m
2﹒ h) oxygen enrichment condition under pyritic smelting 5 hours, obtain the first aluminium alloy, slag and cigarette ash respectively.Further, this slag can return plumbous smelting system, and cigarette ash can Returning smelting system, blasts melting pot together with oxygen enrichment.
Wherein, the dried material component of described lead anode slurry is (in massfraction): plumbous: 16.39%, arsenic: 10.62%, antimony: 43.18%, silver: 7.1642%, gold: 127g/t, bismuth: 13.48%.
2, in described first lead alloy, sheet alkali is added, sheet alkali add-on is 1.8 times of consumptions of theoretical value, to surperficial slag variable color stable color (variable color stable after namely dearsenification is substantially complete), then smelting temperature be 500 DEG C, blast containing oxygen volume fraction be 30%, flow is 1300m
3/ (m
2﹒ h) oxygen enrichment condition under refining 3 hours, obtain arsenic slag and the second lead alloy.Further, this arsenic slag can press brick through overcuring, obtains building block.
Preferably, the solidification pressure brick condition of this arsenic slag is: the jelling agent added in arsenic slag, solidification pressure brick obtains building block.Preferably, the addition of described gelifying agent is 2/1000ths of arsenic slag amount.Wherein, gelifying agent can be selected from least one in cement, flyash, river sand and trolamine.
3, by described second lead alloy smelting temperature be 750 DEG C, blast containing oxygen volume fraction be 35%, flow is 2500m
3/ (m
2﹒ h) oxygen enrichment condition under melting 3 hours, obtain the product hierarchy stibium trioxide containing antimonous oxide more than 99% and precious metals containing lead.
4, described precious metals containing lead obtains electric lead and the high argentalium anode sludge through electrolysis again.
Preferably, described precious metals containing lead electrolytic condition is:
Strength of current: 3500 ~ 4000A;
Current density: 150 ~ 180A/m
2;
Electrolytic solution Chemical Composition: total acid (SiF
4 2-): 100 ~ 180g/l, Pb
2+: 55 ~ 120g/l, Ag≤0.001g/l, Pb≤0.002g/l, Cu≤0.002g/l, Sb≤0.8g/l, Fe≤4g/l, F≤8g/l, amino acid: 5 ~ 22g/l;
Physical specification: lead electrolytic solution answers the limpid no-sundries of outward appearance;
Additive amount: gelatine: 2kg/t separates out lead, and β-Nai phenol: 0.008kg/t separates out lead, and yellow lead: 7.5kg/t separates out lead;
Electrolyte temperature: 40 DEG C ~ 50 DEG C;
Circulation of elecrolyte amount: (20 ~ 40) L/min groove;
Same pole span: 90mm;
Cycle: negative electrode, anode are all 96h;
Bath voltage: 0.35 ~ 0.5V.
5, the described high argentalium anode sludge is obtained thick silver and lead skim through retailoring again.Further, described lead skim can Returning smelting system, pyritic smelting together with lead anode slurry in step 1.
Preferably, the condition of described retailoring is:
Fire box temperature: 1000 DEG C ~ 1200 DEG C;
Treatment capacity: 200 bag/skies (40 ~ 50kg)/bag;
Top hole pressure :-10Pa ~-20Pa.
6, described thick silver is carried out silver-colored electrolysis, obtain high purity silver.
Preferably, the condition of described thick silver-colored electrolysis is:
Anodic cycle: 45 ~ 48h;
Electrolyte component (g/L): Ag:80 ~ 120, HNO
3: 6 ~ 8, Cu≤20, Bi≤1.0, Te≤0.03;
Strength of current: 500 ~ 700A current density: 250 ~ 350A/m
2;
Bath voltage: 2.5 ~ 3V;
Same interpole gap: 200mm;
Positive plate specification: 450 × 260 × 135/groove; Negative plate specification: 500 × 350 × 36/groove material: titanium plate;
The discontinuous cycle of electrolytic solution: 4 ~ 6 times/class;
The material ratio of silver electrolyte preparation: fine silver powder: nitric acid: water=1:1:1 (weight ratio); Reaction times: 4h; New electrolyte component: Ag≤600g/L, HNO
3≤ 50g/L;
Electrolytic solution mechanical stirring: 20 ~ 22 times/min;
Washing silver powder terminal: washing is to colourless anacidity;
Residual anode ratio :≤12%.
The slag obtained in above-mentioned steps, building block, grade stibium trioxide, electricity is plumbous, and the elemental composition of high purity silver and direct yield are in table 2 (slag specimen is all dry weight).
Table 2
| Title | Weight | Plumbous % | Arsenic % | Antimony % | Silver % | Each major metal direct yield % |
| Slag | 183Kg | 2.51 | ||||
| Building block | 1.341t | 21.6 | ||||
| Grade stibium trioxide | 1.51t | 83.49 | Antimony direct yield 97.32 | |||
| Electricity is plumbous | 442Kg | 99.99 | ||||
| High purity silver | 208.3Kg | 99.99 | Silver direct yield 96.91 |
As can be seen here, the method of smelting lead anode slurry provided by the invention take lead anode slurry as raw material, adopt the techniques such as pyritic smelting, basic refining, the blowing of middle temperature, harmful element arsenic in lead anode slurry is removed, and the process of pressure brick can be carried out to it and obtain innoxious laying bricks, can also make high-content antimony wherein in oxygen enrichment, in warm converting process, obtain the grade stibium trioxide of more than 99%, more progressively obtain 99.99% high purity silver through precious metals containing lead electrolysis, retailoring, silver-colored electrolysis.
Therefore, the method for smelting lead anode slurry provided by the invention has the following advantages:
1) the present invention to some extent solves the problem that harmful element arsenic pollutes, arsenic in lead anode slurry is separated and has carried out the harmless process of solidification and laid bricks, lay bricks and be greater than slag brick be about less than common brick through detecting its intensity, the strength grade of laying bricks is Mu7.5, lay bricks and detect its stability through acid-basicity water and also reach material of construction standard, namely acid-basicity detects not containing arsonium ion in water after soaking two weeks, and this is laid bricks and can be used as material of construction use.
2) the present invention produces the grade stibium trioxide of more than 99% in oxygen enrichment in warm converting process, successfully directly reclaim the antimony of the high amount of being rich in lead anode slurry, thus directly define grade stibium trioxide product, and improve the rate of recovery of Preparation of Silver From Lead Anodic Slime while creating profit.
3) the present invention is with low cost, flow process is simple, and compare traditional melting blowing technology, the present invention reduces 10% on cost, and silver-colored direct yield is up to more than 96% (compare traditional technology and improve 2 ~ 3%).
Those of ordinary skill in the field are to be understood that: the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. smelt a method for lead anode slurry, it is characterized in that, comprise the following steps:
By lead anode slurry pyritic smelting under excess oxygen, fully oxidized, thus destroy the structure of lead anode slurry, obtain the first lead alloy;
Described first lead alloy is removed arsenic wherein by basic refining under excess oxygen, obtains the second lead alloy;
Blow described second lead alloy under excess oxygen removing antimony wherein, obtains precious metals containing lead;
By described precious metals containing lead electrolysis, obtain the argentalium anode sludge of argentiferous quality >=80%;
The argentalium anode sludge of described argentiferous quality >=80% is obtained the high purity silver of argentiferous quality >=96% by retailoring and electrolysis.
2. the method for smelting lead anode slurry according to claim 1, is characterized in that, comprise the following steps:
1) by lead anode slurry smelting temperature be 800 ~ 1000 DEG C, blast containing oxygen volume fraction be 25 ~ 30%, flow is 1000 ~ 1500m
3/ (m
2﹒ h) oxygen enrichment condition under melting 3 ~ 7 hours, obtain the first lead alloy, slag and cigarette ash;
2) in described first lead alloy, add sheet alkali, and smelting temperature be 400 ~ 500 DEG C, blast containing oxygen volume fraction be 25 ~ 30%, flow is 1000 ~ 1500m
3/ (m
2﹒ h) oxygen enrichment condition under refining 2 ~ 3 hours, obtain arsenic slag and the second lead alloy;
3) by described second lead alloy smelting temperature be 600 ~ 800 DEG C, blast containing oxygen volume fraction be 25 ~ 40%, flow is 2100 ~ 2500m
3/ (m
2﹒ h) oxygen enrichment condition under melting 2 ~ 3 hours, obtain stibium trioxide and precious metals containing lead;
4) described precious metals containing lead obtains the argentalium anode sludge of electricity lead and argentiferous quality >=80% again through electrolysis;
5) the argentalium anode sludge of described argentiferous quality >=80% is obtained thick silver and lead skim through retailoring again;
6) described thick silver is carried out electrolysis, obtain the high purity silver of argentiferous quality >=96%.
3. the method for smelting lead anode slurry according to claim 2, is characterized in that, in described step 1) in, slag returns plumbous smelting system, and cigarette ash Returning smelting system, blasts melting pot together with oxygen enrichment.
4. the method for smelting lead anode slurry according to claim 2, is characterized in that, described step 2) in, add to arsenic slag the jelling agent that middle addition is 1/1000 ~ 3/1000, arsenic slag presses brick through overcuring, obtains building block.
5. the method for smelting lead anode slurry according to claim 4, is characterized in that, described jelling agent is selected from least one in cement, flyash, river sand and trolamine.
6. the method for smelting lead anode slurry according to claim 2, is characterized in that, in described step 5) in, lead skim Returning smelting system, with step 1) in pyritic smelting together with lead anode slurry.
7. the method for smelting lead anode slurry according to claim 2, is characterized in that, described alkali add-on is 1 ~ 2 times of consumption of theoretical value, becomes light grey to arsenic slag surface.
8. the method for smelting lead anode slurry according to claim 2, is characterized in that, described precious metals containing lead electrolytic condition is:
Strength of current: 3500 ~ 4000A;
Current density: 150 ~ 180A/m
2;
Electrolytic solution Chemical Composition: total acid SiF
4 2-: 100 ~ 180g/L, Pb
2+: 55 ~ 120g/L, Ag≤0.001g/L, Pb≤0.002g/L, Cu≤0.002g/L, Sb≤0.8g/L, Fe≤4g/L, F≤8g/L, amino acid: 5 ~ 22g/L;
Additive amount: gelatine: 2kg/t separates out lead, and β-Nai phenol: 0.008kg/t separates out lead, and yellow lead: 7.5kg/t separates out lead;
Electrolyte temperature: 40 DEG C ~ 50 DEG C;
Circulation of elecrolyte amount: 20 ~ 40L/min groove;
Same pole span: 90mm;
Cycle: negative electrode, anode are all 96h;
Bath voltage: 0.35 ~ 0.5V.
9. the method for smelting lead anode slurry according to claim 2, is characterized in that, the condition of described retailoring is:
Fire box temperature: 1000 DEG C ~ 1200 DEG C;
Top hole pressure :-10Pa ~-20Pa.
10. the method for smelting lead anode slurry according to claim 2, is characterized in that, the condition of described thick silver-colored electrolysis is:
Anodic cycle: 45 ~ 48h;
Electrolyte component: Ag:80 ~ 120g/L, HNO
3: 6 ~ 8g/L, Cu≤20g/L, Bi≤1.0g/L, Te≤0.03g/L;
Strength of current: 500 ~ 700A current density: 250 ~ 350A/m
2;
Bath voltage: 2.5 ~ 3V;
Same interpole gap: 200mm;
The material ratio of silver electrolyte preparation: fine silver powder: nitric acid: the weight ratio=1:1:1 of water; Reaction times: 4h; New electrolyte component: Ag≤600g/L, HNO
3≤ 50g/L;
Washing silver powder terminal: washing is to colourless anacidity;
Residual anode ratio :≤12%.
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| CN104230242B (en) * | 2014-09-14 | 2018-04-20 | 湖南馨湘碧浪环保科技有限公司 | A kind of high arsenic body refuse is innoxious to cure brick preparation method |
| CN105671315B (en) * | 2016-01-30 | 2017-09-15 | 云南驰宏锌锗股份有限公司 | A kind of method that step of the earth of positive pole one prepares electrum |
| CN107312935A (en) * | 2017-06-30 | 2017-11-03 | 郴州市金贵银业股份有限公司 | A kind of processing method of reducing slag after lead anode slurry melting |
| CN109097587B (en) * | 2018-10-18 | 2020-07-31 | 郴州市金贵银业股份有限公司 | Method for efficiently recovering precious metal in lead anode slime |
| CN114369724A (en) * | 2021-12-29 | 2022-04-19 | 山东恒邦冶炼股份有限公司 | Method for quickly producing antimony white from high-arsenic antimony-lead anode mud |
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