CN102978411A - Comprehensive recycling method for crude indium casting slag - Google Patents
Comprehensive recycling method for crude indium casting slag Download PDFInfo
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- CN102978411A CN102978411A CN2012105888053A CN201210588805A CN102978411A CN 102978411 A CN102978411 A CN 102978411A CN 2012105888053 A CN2012105888053 A CN 2012105888053A CN 201210588805 A CN201210588805 A CN 201210588805A CN 102978411 A CN102978411 A CN 102978411A
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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
- Y02P10/20—Recycling
Abstract
The invention provides a comprehensive recycling method for crude indium casting slag. The comprehensive recycling method comprises the following steps: A, leaching crude indium casting slag with sulfuric acid; B, carrying out purification to the leached liquid with sponge indium; C, replacing the purified liquid with a zinc sheet, and obtaining the sponge indium after separation; D, briquetting and casting mould, i.e. briquetting the leached slag obtained in the Step A and the sponge indium obtained in the Step C after cleaning with water, and mixing and casting mould to obtain zinc contained crude indium; and E, eliminating zinc and tin, i.e. adding zinc contained crude indium into molten alkali, adding sodium nitrate after the zinc contained crude indium is molten, and eliminating the zinc and tin in the zinc contained crude indium to obtain crude indium with an indium content grade of more than 99wt percent. According to the comprehensive recycling method provided by the invention, the recycling rate of extracting indium from the crude indium casting slag is more than 98 percent; the grade of the obtained crude indium is more than 99wt percent; zinc and cadmium can be extracted, so that valuable metal such as lead, tin, and the like is concentrated, which is good for the recycling in the subsequent working procedures; and the process is reliable as well as the production cost is low.
Description
Technical field
The present invention relates to a kind of Non-ferrous Metallurgy field, particularly the comprehensive recovering process of thick indium casting mold slag in a kind of zinc hydrometallurgy.
Background technology
The smelting technology of indium has generally comprised the pressure group and casting mold operation of sponge indium, and except obtaining thick indium, also can produce a kind of alkaline residue is thick indium casting mold slag in the casting mold process.Generally contain indium about 20% in the thick indium casting mold slag, also contain simultaneously the valuable metals such as a certain amount of zinc, lead, tin, particularly when the sponge indium was second-rate, the content of indium surpassed 50% in the thick indium casting mold slag.Some Enterprises is taked to stack to the casting mold slag and is processed, and has both disorderly taken resource, has taken again the place simultaneously, also becomes source of pollution; Some enterprise returns the leaching operation to the casting mold slag and again leaches, and cause complex manufacturing, production cost height, and indium recovery is low, other valuable metal disperses, and can not get efficient recovery.
Therefore, how valuable metal and the high efficiente callback indiums such as comprehensive recovery of indium, zinc, lead from thick indium casting mold slag, and isolate zinc, cadmium and the valuable metals such as enriched lead, tin, improving simultaneously production environment and reducing production costs is to remain the difficult problem further explored.
Summary of the invention
The invention solves and process the defects that exists in the method for thick indium casting mold slag in the present prior art, a kind of comprehensive recovering process of thick indium casting mold slag is provided.
Particularly, technical scheme of the present invention is:
A kind of comprehensive recovering process of thick indium casting mold slag may further comprise the steps:
A, sulfuric acid leaching: thick indium casting mold slag is adopted sulfuric acid leaching, obtain leach liquor and leached mud after the separation;
B, sponge indium purify: adding sponge indium purifies in the leach liquor of steps A, the valuable metal ions in the leach liquor is reduced into metal and is enriched in the slag, is purified liquid after the separation;
C, zinc metal sheet displacement: the scavenging solution of step B is replaced with zinc metal sheet, obtain displacement liquid and sponge indium after the separation;
D, the group of pressure and casting mold: the leached mud washing of steps A is obtained washery slag, with the group of pressure after the sponge indium washing of step C, then with washery slag mixing casting mold, obtain containing the thick indium of zinc;
E, dezincify tin: the thick indium of zinc that contains of step D is added in the alkali of melting, add SODIUMNITRATE after containing the thick indium fusing of zinc, slough the zinc-tin that contains in the thick indium of zinc, obtaining containing indium grade is the above thick indium of 99wt%.
As a further improvement on the present invention, in the steps A, the concentration of described sulfuric acid is 150～200g/L, and the quality liquid-solid ratio of sulfuric acid and thick indium casting mold slag is 3:1～6:1.
As a further improvement on the present invention, in the steps A, the condition of leaching comprises: temperature of reaction is 60～85 ℃, extraction time 1～3 hour, and sulfur acid is 20～80g/L in the leach liquor.
As a further improvement on the present invention, among the step B, the consumption of described sponge indium is for becoming valuable metal ions Restore All in the leach liquor 0.95～1.05 times of required theoretical consumption of metal.
As a further improvement on the present invention, among the step B, the condition of purification comprises: temperature is 50～85 ℃, and the time is 40～120 minutes.
As a further improvement on the present invention, among the step C, the consumption of zinc metal sheet is excessive, and the condition of displacement comprises: temperature is 50～80 ℃, and the reaction times is 6～12 hours, and endpoint pH is 4～4.5.
As a further improvement on the present invention, among the step C, also comprise displacement liquid is returned the step that wet zinc-making system reclaims zinc and cadmium.
As a further improvement on the present invention, in the steps A, the condition of leached mud washing comprises: the quality liquid-solid ratio of washing water and leached mud is 3:1～8:1, and wash temperature is 50～70 ℃, and washing time is 20～60 minutes; Among the step D, the condition of sponge indium washing comprises: the quality liquid-solid ratio of washing water and sponge indium is 5:1～10:1, and washing time is 15～45 minutes.
As a further improvement on the present invention, among the step D, it is 40～80 tons that the sponge indium after the washing is pressed the pressure of group, and the temperature of fusion of casting mold is 300～450 ℃, and the fusion time is 45～90 minutes, and the zinc content that contains in the thick indium of zinc is 3 ~ 7wt%.
As a further improvement on the present invention, in the step e, the consumption of SODIUMNITRATE is to contain 5～10% of the thick indium quality of zinc; The condition of dezincify tin comprises: temperature is 420～500 ℃, and the time is 30～60 minutes.
Beneficial effect of the present invention is:
The comprehensive recovering process of thick indium casting mold slag provided by the invention, the rate of recovery of extracting indium from thick indium casting mold slag is up to more than 98%, and the thick indium grade that obtains is more than the 99wt%; And cl content is lower than 0.05g/L in the displacement liquid that obtains, and can directly enter wet zinc-making system and reclaim the zinc cadmium; The valuable metals such as lead, tin obtain enrichment simultaneously, are conducive to subsequent handling and reclaim.To sum up, comprehensive recovering process provided by the invention has process, low, the high advantage that reaches comprehensive other various valuable metals of recovery of indium recovery of production cost, and the valuable metals such as comprehensive recovery of indium, zinc, lead from thick indium casting mold slag suit.
Description of drawings
Fig. 1 is process flow sheet of the present invention.
Embodiment
The invention provides a kind of comprehensive recovering process of thick indium casting mold slag, as shown in Figure 1, may further comprise the steps:
A, sulfuric acid leaching: thick indium casting mold slag is adopted sulfuric acid leaching, obtain leach liquor and leached mud after the separation;
B, sponge indium purify: adding sponge indium purifies in the leach liquor of steps A, the valuable metal ions in the leach liquor is reduced into metal and is enriched in the slag, is purified liquid after the separation;
C, zinc metal sheet displacement: the scavenging solution of step B is replaced with zinc metal sheet, obtain displacement liquid and sponge indium after the separation;
D, the group of pressure and casting mold: the leached mud washing of steps A is obtained washery slag, with the group of pressure after the sponge indium washing of step C, then with washery slag mixing casting mold, obtain containing the thick indium of zinc;
E, dezincify tin: the thick indium of zinc that contains of step D is added in the alkali of melting, add SODIUMNITRATE after containing the thick indium fusing of zinc, slough the zinc-tin that contains in the thick indium of zinc, obtaining containing indium grade is the above thick indium of 99wt%.
The method according to this invention adopts first sulfuric acid that thick indium casting mold slag is leached processing, and the valuable metals such as the indium in the thick indium casting mold slag, zinc, cadmium are immersed in the solution, then passes through liquid-solid separation, obtains leach liquor and leached mud.Leached mud send to be washed and starched, and the washery slag that obtains send the casting mold operation; Leach liquor then send subsequent processing---and the sponge indium purifies.
Among the present invention, the various sulfuric acid that the sulfuric acid that adopts during leaching is commonly used for those skilled in the art, for example the concentration of its sulfuric acid is 150～200g/L.Under the preferable case, during leaching, sulfuric acid is 3:1～6:1 with the quality liquid-solid ratio of thick indium casting mold slag.Among the present invention, the condition of leaching comprises: temperature of reaction is 60～85 ℃, extraction time 1～3 hour, and sulfur acid is 20～80g/L in the leach liquor.
The condition that leached mud is washed and starched comprises: the quality liquid-solid ratio of washing water and leached mud is 3:1～8:1, and wash temperature is 50～70 ℃, and washing time is 20～60 minutes;
The step that the sponge indium purifies comprises: adding the sponge indium in the leach liquor of steps A purifies, make in the leach liquor the various valuable metal ions such as leaded, tin, bismuth be reduced into metal, and be enriched in the slag, be purified liquid and purification slag after the separation.Wherein, purification slag can return lead system and reclaim the valuable metals such as lead, tin, and scavenging solution send subsequent processing---the zinc metal sheet displacement.
Among this step B, the consumption of described sponge indium is for becoming valuable metal ions Restore All in the leach liquor 0.95～1.05 times of required theoretical consumption of metal.The condition that purifies comprises: temperature is 50～85 ℃, and the time is 40～120 minutes.
The step of zinc metal sheet displacement is: the adding zinc metal sheet is replaced in the scavenging solution, obtains displacement liquid and sponge indium after the separation.Contain zinc and cadmium in the displacement liquid, its cl content is lower than 0.05g/L, therefore can directly return wet zinc-making system and reclaim the zinc cadmium, and wherein zinc is for the production of electric zinc, and cadmium is for the production of pure cadmium.
Among the present invention, for guaranteeing that the indium in the scavenging solution is thoroughly replaced, the consumption of zinc metal sheet is excessive.The condition of displacement comprises: temperature is 50～80 ℃, and the reaction times is 6～12 hours, and endpoint pH is 4～4.5.
Then the method according to this invention washes the sponge indium that obtains after the displacement, sloughs the soluble impurity in the sponge indium.Under the preferable case, the condition of sponge indium washing comprises: the quality liquid-solid ratio of washing water and sponge indium is 5:1～10:1, and washing time is 15～45 minutes.
Among the present invention, wash water in wash water after the washing of sponge indium and the steps A after the leached mud washing all can return for sulfuric acid leaching, the on the one hand valuable metal indium in the recyclable wash water and the acid in the wash water, also can reduce on the other hand the consumption of water in the leaching process, when improving indium recovery, saved production cost.
Then the sponge indium after will washing is pressed group, and the pressure of the group of pressure is 40～80 tons; Then mix with the washery slag that obtains after the leached mud washing in the steps A, carry out together casting mold; Zinc metal sheet is excessive during owing to displacement, so also contains a small amount of zinc in the thick indium that obtains behind the casting mold, is to contain the thick indium of zinc.Under the preferable case, the temperature of fusion of casting mold is 300～450 ℃, and the fusion time is 45～90 minutes.The zinc content that contains in the thick indium of zinc that obtains behind the casting mold is 3 ~ 7wt%.
Then carry out dezincify tin and process containing the thick indium of zinc, comprise that specifically this is contained the thick indium of zinc adds in the alkali of melting, add SODIUMNITRATE after containing the thick indium fusing of zinc, reacting to slough contains the zinc-tin that contains in the thick indium of zinc, is the above thick indium of 99wt% thereby obtain containing indium grade.
In this step, described ammonium nitrate can directly adopt industrial ammonium nitrate.Under the preferable case, the consumption of SODIUMNITRATE is to contain 5～10% of the thick indium quality of zinc.The condition of dezincify tin comprises: temperature is 420～500 ℃, and the time is 30～60 minutes.
In the comprehensive recovering process of thick indium casting mold slag provided by the invention, when from thick indium casting mold slag, extracting indium, make that cl content is lower than 0.05g/L in the displacement liquid, it can directly return wet zinc-making system and reclaim the zinc cadmium, successful solution in the removal process of zinc smeltery byproduct indium, the displaced liquid of generation is directly returned the problem that Zn system is produced chlorine in the electric zinc; And process method of the present invention reclaims the grade of the thick indium that obtains above 99wt%, and the valuable metals such as lead, tin obtain enrichment simultaneously, more is conducive to subsequent handling and reclaims; And process, low, the high advantage that reaches comprehensive other various valuable metals of recovery of indium recovery of production cost are arranged, and the valuable metals such as comprehensive recovery of indium, zinc, lead from thick indium casting mold slag suit.
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with specific embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.The raw material that adopts all is commercially available among the embodiment.
Embodiment 1
Steps A: thick indium casting mold slag is joined by the quality liquid-solid ratio in the sulfuric acid of 150g/L at 3: 1, and the control temperature of reaction is 60 ℃, extraction time 1 hour, and sulfur acid is 20g/L in the leach liquor, and solid-liquid separation gets leach liquor and leached mud, and leach liquor send subsequent processing; Leached mud is washed and starched, and wash conditions is: the quality liquid-solid ratio of washing water and leached mud is 3:1, and wash temperature is 50 ℃, and washing time is 20min, obtains washery slag.
Step B:50 ℃ lower in the leach liquor the fresh sponge indium of adding purify, the add-on of sponge indium is for all replacing valuable metal in the leach liquor 1.0 times of theoretical consumption of the required indium of reduction, reaction times is 40 minutes, liquid-solid scavenging solution and the purification slag of separating to get, purification slag returns lead system and reclaims Pb and Sn as valuable metal, and scavenging solution send subsequent processing.
Step C: add excessive zinc metal sheet displacement in scavenging solution, it is 50 ℃ that replacement process keeps temperature, and in 6 hours reaction times, endpoint pH is 4, obtains sponge indium and displacement liquid, and the sponge indium send subsequent processing, and displacement liquid returns wet zinc-making system recovery zinc cadmium.
Step D: the sponge indium of step C is washed, and wash conditions is: the quality liquid-solid ratio of washing water and sponge indium is 5:1, and washing time is 15min; Be that 40 tons condition presses down group with the sponge indium after the washing at pressure, and carry out casting mold, the temperature of fusion of casting mold with the washery slag of steps A: 300 ℃, the fusion time: 45min, obtain containing the thick indium of zinc, its composition is by mass percentage: In 92.73%, Zn 6.71%, Sn 0.142%.
Step e: the thick indium of zinc that contains of step D is carried out dezincify tin, and 500 ℃ of the temperature of dezincify tin will contain in the sheet alkali that the thick indium of zinc is added to melting, and the add-on of industrial sodium nitrate is 10% of thick indium weight, the dezincify tin time: 60 minutes.
By above-mentioned steps, obtaining thick indium grade is 99.53%, and its impurity composition is by mass percentage: Sn 0.012%, Bi 0.084%, Pb 0.084%, Cu 0.0032%, the rate of recovery of indium is 98. 37%.
Embodiment 2
Steps A: thick indium casting mold slag is joined by the quality liquid-solid ratio in the sulfuric acid of 180g/L at 5: 1, and the control temperature of reaction is 75 ℃, extraction time 2 hours, and sulfur acid is 50g/L in the leach liquor; Solid-liquid separation gets leach liquor and leached mud, and leach liquor send subsequent processing; Leached mud is washed and starched, and wash conditions is: liquid-solid ratio is 6:1, and wash temperature is 60 ℃, and washing time is 40min, obtains washery slag.
Step B:60 ℃ lower in the leach liquor the fresh sponge indium of adding purify, the add-on of sponge indium is for all replacing valuable metal in the leach liquor 1.1 times of theoretical consumption of the required indium of reduction, reaction times is 80 minutes, liquid-solid scavenging solution and the purification slag of separating to get, purification slag returns lead system and reclaims Pb and Sn as valuable metal, and scavenging solution send subsequent processing.
Step C: add excessive zinc metal sheet displacement in scavenging solution, replacement process control temperature is at 65 ℃, and in 9 hours reaction times, endpoint pH is 4.2, obtains sponge indium and displacement liquid, and the sponge indium send subsequent processing, and displacement liquid returns wet zinc-making system recovery zinc cadmium.
Step D: the sponge indium of step C is washed, and wash conditions is: the quality liquid-solid ratio of washing water and sponge indium is 8:1, and washing time is 30min; Be that the condition of 60t presses down group with the sponge indium after the washing at pressure, and carry out casting mold, the temperature of fusion of casting mold with the washery slag of steps A: 380 ℃, the fusion time: 70min, obtain containing the thick indium of zinc, its composition is by mass percentage: In 94.16%, Zn 5.18%, Sn 0.108%
Step e: the thick indium of zinc that contains of step D is carried out dezincify tin, and 480 ℃ of the temperature of dezincify tin will contain in the sheet alkali that the thick indium of zinc is added to melting, and the add-on of industrial sodium nitrate is 8% of thick indium weight, the dezincify tin time: 45 minutes.
By above-mentioned steps, obtaining thick indium grade is 99.65%, and its impurity composition is by mass percentage: Sn 0.0071%, Bi 0.074%, Pb 0.063%, Cu 0.0024%, the rate of recovery of indium is 98. 95%.
Embodiment 3
Steps A: thick indium casting mold slag is joined by the quality liquid-solid ratio in the sulfuric acid of 200g/L at 6: 1, and the control temperature of reaction is 85 ℃, extraction time 3 hours, and sulfur acid is 80g/L in the leach liquor; Solid-liquid separation gets leach liquor and leached mud, and leach liquor send subsequent processing; Leached mud is washed and starched, and wash conditions is: liquid-solid ratio is 8:1, and wash temperature is 70 ℃, and washing time is 60min, obtains washery slag.
Step B:70 ℃ lower in the leach liquor the fresh sponge indium of adding purify, the add-on of sponge indium is for all replacing valuable metal in the leach liquor 1.2 times of theoretical consumption of the required indium of reduction, reaction times is 120 minutes, liquid-solid scavenging solution and the purification slag of separating to get, purification slag returns lead system and reclaims Pb and Sn as valuable metal, and scavenging solution send subsequent processing.
Step C: add excessive zinc metal sheet displacement in scavenging solution, replacement process control temperature is at 80 ℃, and in 12 hours reaction times, endpoint pH is 4.5, obtains sponge indium and displacement liquid, and the sponge indium send subsequent processing, and displacement liquid returns wet zinc-making system recovery zinc cadmium.
Step D: the sponge indium of step C is washed, and wash conditions is: the quality liquid-solid ratio of washing water and sponge indium is 10:1, and washing time is 45min; Be that the condition of 80t presses down group with the sponge indium after the washing at pressure, and carry out casting mold, the temperature of fusion of casting mold with the washery slag of steps A: 450 ℃, the fusion time: 90min, obtain containing the thick indium of zinc, its composition is by mass percentage: In 95.51%, Zn 4.15%, Sn 0.87%
Step e: the thick indium of zinc that contains of step D is carried out dezincify tin, and 420 ℃ of the temperature of dezincify tin will contain in the sheet alkali that the thick indium of zinc is added to melting, and the add-on of industrial sodium nitrate is 5% of thick indium weight, the dezincify tin time: 30 minutes.
By above-mentioned steps, obtaining thick indium grade is 99.76%, and its impurity composition is by mass percentage: Sn 0.0067%, Bi 0.037%, Pb 0.082%, Cu 0.0033%, the rate of recovery of indium is 99.05%.
Claims (10)
1. the comprehensive recovering process of a thick indium casting mold slag is characterized in that, may further comprise the steps:
A, sulfuric acid leaching: thick indium casting mold slag is adopted sulfuric acid leaching, obtain leach liquor and leached mud after the separation, leached mud is washed and starched and is obtained washery slag;
B, sponge indium purify: adding sponge indium purifies in the leach liquor of steps A, the valuable metal ions in the leach liquor is reduced into metal and is enriched in the slag, is purified liquid after the separation;
C, zinc metal sheet displacement: the scavenging solution of step B is replaced with zinc metal sheet, obtain displacement liquid and sponge indium after the separation;
D, the group of pressure and casting mold: with the group of pressure after the sponge indium washing of step C, then mix with the washery slag of steps A and carry out casting mold, obtain containing the thick indium of zinc;
E, dezincify tin: the thick indium of zinc that contains of step D is added in the alkali of melting, add SODIUMNITRATE after containing the thick indium fusing of zinc, slough the zinc-tin that contains in the thick indium of zinc, obtaining containing indium grade is the above thick indium of 99wt%.
2. comprehensive recovering process according to claim 1 is characterized in that, in the steps A, the concentration of described sulfuric acid is 150～200g/L, and the quality liquid-solid ratio of sulfuric acid and thick indium casting mold slag is 3:1～6:1.
3. comprehensive recovering process according to claim 1 and 2 is characterized in that, in the steps A, the condition of leaching comprises: temperature of reaction is 60～85 ℃, extraction time 1～3 hour, and sulfur acid is 20～80g/L in the leach liquor.
4. comprehensive recovering process according to claim 1 is characterized in that, among the step B, the consumption of described sponge indium is for becoming valuable metal ions Restore All in the leach liquor 0.95～1.05 times of required theoretical consumption of metal.
5. according to claim 1 or 4 described comprehensive recovering process, it is characterized in that among the step B, the condition of purification comprises: temperature is 50～85 ℃, and the time is 40～120 minutes.
6. comprehensive recovering process according to claim 1 is characterized in that, among the step C, the consumption of zinc metal sheet is excessive, and the condition of displacement comprises: temperature is 50～80 ℃, and the reaction times is 6～12 hours, and endpoint pH is 4～4.5.
7. according to claim 1 or 6 described comprehensive recovering process, it is characterized in that, among the step C, also comprise displacement liquid is returned the step that wet zinc-making system reclaims zinc and cadmium.
8. comprehensive recovering process according to claim 1 is characterized in that, in the steps A, the condition that leached mud is washed and starched comprises: the quality liquid-solid ratio of washing water and leached mud is 3:1～8:1, and wash temperature is 50～70 ℃, and washing time is 20～60 minutes; Among the step D, the condition of sponge indium washing comprises: the quality liquid-solid ratio of washing water and sponge indium is 5:1～10:1, and washing time is 15～45 minutes.
9. comprehensive recovering process according to claim 1 is characterized in that, among the step D, it is 40～80 tons that sponge indium after the washing is pressed the pressure of group, the temperature of fusion of casting mold is 300～450 ℃, and the fusion time is 45～90 minutes, and the zinc content that contains in the thick indium of zinc is 3 ~ 7wt%.
10. comprehensive recovering process according to claim 1 is characterized in that, in the step e, the consumption of SODIUMNITRATE is to contain 5～10% of the thick indium quality of zinc; The condition of dezincify tin comprises: temperature is 420～500 ℃, and the time is 30～60 minutes.
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| CN104120266A (en) * | 2014-08-02 | 2014-10-29 | 蒙自矿冶有限责任公司 | Method for preparing high-quality anti-position indium feed liquid by using complex indium copper enrichment residues |
| CN105219970A (en) * | 2015-10-29 | 2016-01-06 | 红河锌联科技发展有限公司 | A kind ofly roast in dirt the method reclaiming many metals and calcium chloride |
| CN105349800A (en) * | 2015-11-18 | 2016-02-24 | 来宾华锡冶炼有限公司 | Method and purification tank for replacement and impurity removal of zinc sulfate solution |
| CN106148735A (en) * | 2016-08-30 | 2016-11-23 | 南丹县南方有色金属有限责任公司 | The process that indium reclaims is improved further during a kind of electrolytic zinc |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103695651A (en) * | 2013-12-31 | 2014-04-02 | 济源豫金靶材科技有限公司 | Method for recovering indium and stannum from indium-tin alloy |
| CN104120266A (en) * | 2014-08-02 | 2014-10-29 | 蒙自矿冶有限责任公司 | Method for preparing high-quality anti-position indium feed liquid by using complex indium copper enrichment residues |
| CN105219970A (en) * | 2015-10-29 | 2016-01-06 | 红河锌联科技发展有限公司 | A kind ofly roast in dirt the method reclaiming many metals and calcium chloride |
| CN105219970B (en) * | 2015-10-29 | 2017-07-07 | 红河锌联科技发展有限公司 | A kind of method that many metals and calcium chloride are reclaimed in roasting dirt |
| CN105349800A (en) * | 2015-11-18 | 2016-02-24 | 来宾华锡冶炼有限公司 | Method and purification tank for replacement and impurity removal of zinc sulfate solution |
| CN105349800B (en) * | 2015-11-18 | 2017-11-17 | 来宾华锡冶炼有限公司 | A kind of method and its purification tank of solution of zinc sulfate displacement removal of impurities |
| CN106148735A (en) * | 2016-08-30 | 2016-11-23 | 南丹县南方有色金属有限责任公司 | The process that indium reclaims is improved further during a kind of electrolytic zinc |
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|---|---|
| CN102978411B (en) | 2014-08-27 |
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