CN106011474A - Silver-zinc crust wet process comprehensive recovery method - Google Patents
Silver-zinc crust wet process comprehensive recovery method Download PDFInfo
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- CN106011474A CN106011474A CN201610349381.3A CN201610349381A CN106011474A CN 106011474 A CN106011474 A CN 106011474A CN 201610349381 A CN201610349381 A CN 201610349381A CN 106011474 A CN106011474 A CN 106011474A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/007—Wet processes by acid leaching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
- C22B11/042—Recovery of noble metals from waste materials
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B13/00—Obtaining lead
- C22B13/04—Obtaining lead by wet processes
- C22B13/045—Recovery from waste materials
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/06—Obtaining bismuth
-
- 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
Abstract
The invention discloses a silver-zinc crust wet process comprehensive recovery method which is characterized in that that silver-zinc crusts are subjected to thorough roasting and ball milling sieving; then through an acid leaching condition, an acid extract and acid leaching residues are obtained; after the acid leaching residues are leached by sodium sulfite, lead residues and an extract are obtained; the lead residues can return to a pyrogenic process smelting system, the extract is purified and then is reduced by formaldehyde, and crude silver is finally obtained after casting; the acid extract can be replaced by zinc powder and sponge bismuth is obtained; liquid after replacement is purified and then is subjected to evaporative crystallization, and zinc chloride is obtained; and direct recovery rates of silver, bismuth and zinc respectively reach above 95.7%, 94.1% and 88.9%. The silver-zinc crust wet process comprehensive recovery method is applicable to recovery of valuable metals, such as silver, bismuth and zinc, from the silver-zinc crusts rich in lead, silver, bismuth and zinc; the lead residues can return the pyrogenic process smelting system; the direct recovery rates are high; separation is thorough; and rapid recovery of valuable metals, especially silver, of the pyrogenic process smelting system is facilitated more.
Description
Technical field
The present invention relates to non-ferrous metal hydrometallurgy and two grades of technical field of resource recovery, wet particularly to one
The method of method synthetical recovery silver-zinc crust.
Background technology
Silver-zinc crust is the product of zincification desilver in part non-ferrous metal refining process, at present, domestic and international silver-zinc crust
Recovery method major part be all that the method taking traditional vacuum distilling reclaims.But the method exists
The problems such as technological process is long, recovery time length, the response rate are low, and the method major part is required for pyrogenic process
Smelt and reclaim further, greatly reduce organic efficiency.Therefore use in wet method rapid integrated recovery silver-zinc crust
Valuable metal, i.e. the valuable metal such as Comprehensive Recovery of Ag, bismuth, zinc, lead, so that noble metal smelting slag
Reproducible utilization, has great importance for solving the famine of China's Precious Metals Resources.
(invention patent mandate 102703719B, authorization date is 2014 03 month 05 to Zhou Songlin et al.
Day) disclosing a kind of technique reclaiming valuable metal from noble metal smelting slag, silver-zinc crust is carried out by this technique
Vacuum distilling processes, and respectively obtains the metal rich in noble metal and zinc after condensation；Utilize and rotate top blast stove pair
The described metal rich in noble metal blows, and obtains electrum；Electrum is carried out electrolysis process,
Respectively obtain Jin Heyin.This patent of invention uses the old way vacuum distilling of tradition, then turns pyrometallurgical smelting and reclaims
Gold, silver, this complex technical process affects metal recovery rate, and the production cycle, the long business capital that affects overstock,
Additionally, this patent of invention emphasis point is in the overall rough description of synthetical recovery system for precious metal smelting, do not have
Have the metallurgical slag produced for some enterprise practical to do detailed synthetical recovery to illustrate.
Summary of the invention
In view of this, a kind of method that it is an object of the invention to propose wet method synthetical recovery silver-zinc crust, the party
Method be applicable to from rich in lead, silver, bismuth, zinc silver-zinc crust reclaim the valuable metals such as silver therein, bismuth, zinc,
Lead skim can return to pyrometallurgical smelting system, and the method direct yield is high and separates thoroughly, is more favorable for smelting system expensive
The rapid recovery of heavy metal particularly silver.
Based on above-mentioned purpose, the method for a kind of wet method synthetical recovery silver-zinc crust that the present invention provides, including following
Step:
A, in silver-zinc crust add calcium oxide carry out oxidizing roasting, carry out ball milling afterwards and sieve, obtain ball milling
Silver-zinc crust after sieving；
Adding hydrochloric acid solution in b, silver-zinc crust after ball milling sieves and oxidant reacts, reaction completes
Rear cold filtration obtains acid leaching solution and acidic leaching residue；
C, acid leaching solution adds zinc powder and flocculant carry out displacement reaction, filter after having reacted
To sponge bismuth and displaced liquid；Afterwards sponge bismuth is carried out casting mold and obtain thick bismuth；
D, displaced liquid evaporative crystallization after purifying obtains zinc chloride；
E, in acidic leaching residue add sodium sulfite solution react, be filtrated to get lead after having reacted
Slag and leachate, return lead skim to pyrometallurgical smelting afterwards；
F, leachate addition formalin after purifying carries out reduction reaction and obtains argentum powder, afterwards to argentum powder
Carry out casting mold and obtain thick silver.
Preferably, the addition of calcium oxide described in step a is the 3-10% of described silver-zinc crust quality；Described
Oxidizing roasting includes that three phases, first stage sintering temperature are 400-700 DEG C, and the time is 2-6 hour；
Second stage sintering temperature is 700-800 DEG C, and the time is 2-4 hour；Phase III sintering temperature is
800-1000 DEG C, the time is 1-3 hour.
Preferably, sieve described in step a as crossing 100-300 mesh sieve.
Preferably, the concentration of hydrochloric acid solution described in step b is 2-5mol/L, described ball milling sieve after silver
Cadmia is in the silver-zinc crust after ball milling described in 1:4-6, i.e. 1g sieves with the mass volume ratio of described hydrochloric acid solution
Add hydrochloric acid solution described in 4-6mL.
Preferably, oxidant described in step b is sodium chlorate, and addition is the silver after described ball milling sieves
The 5-10% of cadmia quality；The temperature of described reaction is 90-95 DEG C, and the time of reaction is 2-5h, controls anti-
The pH value answering terminal is: 0 ＜ pH ＜ 1.
Preferably, zinc powder addition described in step c is 30-70g/L；Described flocculant is polypropylene milling amine,
And addition is 1-3g/L；The temperature of described displacement reaction is 40 DEG C-70 DEG C, and the time of reaction is that 1-3 is little
Time.
Preferably, the concentration of sodium sulfite solution described in step e is 200-300g/L, described acidic leaching
Slag is to add in acidic leaching residue described in 1:3-7, i.e. 1g with the mass volume ratio of described sodium sulfite solution
Sodium sulfite solution described in 3-7mL.
Preferably, described in step e, the temperature of reaction is 40 DEG C-60 DEG C, and the time of reaction is 3-6 hour,
The pH value of reaction is 8-10.
Preferably, the volume mass ratio of formalin described in step f and the silver in leachate for 1:2-5,
Silver in formalin correspondence 2-5g leachate described in i.e. 1mL；The temperature of described reduction reaction is 30 DEG C
-50 DEG C, the time of reaction is 1-2 hour.
Preferably, the component content of the silver-zinc crust after ball milling sieves described in step a is: lead 2%-20%,
Silver 2%-30%, bismuth 10%-50%, zinc 20%-50%.
The silver-zinc crust of the present invention is after thorough roasting ball milling sieve, then obtains acid after acidic leaching condition
Property leachate and acidic leaching residue, acidic leaching residue obtains lead skim and leachate by sodium sulfite after being leached,
Lead skim can return to pyrometallurgical smelting system, and leachate is by reducing with formaldehyde after purifying, and last casting mold obtains thick silver；
And acid leaching solution can obtain sponge bismuth through zinc dust precipitation, sponge bismuth casting mold obtains thick bismuth, displaced liquid warp
After crossing purification, evaporative crystallization obtains zinc chloride, wherein argent, bismuth, zinc direct yield respectively reach 95.7%,
94.1%, more than 88.9%.
Compared with prior art, the method for the present invention has the advantages that
(1) method of wet method synthetical recovery silver-zinc crust of the present invention be applicable to Comprehensive Recovery of Ag from silver-zinc crust,
Bismuth, zinc, its direct yield respectively reaches 95.7%, 94.1%, more than 88.9%, and technique is simple and flow process is time-consuming
Short, solve that enterprise is long due to old technique production cycle and the problem that causes fund to overstock.
(2) present invention leaded 2%-20%, argentiferous 2%-30%, bismuth-containing after sieving with thorough roasting ball milling
10%-50%, the silver-zinc crust containing zinc 20%-50% is raw material, has stronger production adaptability.
(2) the method non-environmental-pollution of the present invention, water system recycles, without solid waste, part
Middle slag charge can return to silver smelting system, reclaims the valuable metals such as lead therein, gold, silver.
Accompanying drawing explanation
Accompanying drawing is to combine concrete process embodiment, specifically understands that technique is moved towards.
Fig. 1 is the method flow diagram of wet method synthetical recovery silver-zinc crust of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment,
And referring to the drawings, the present invention is described in more detail.
Embodiment 1
The production method flow chart of the present embodiment wet method synthetical recovery silver-zinc crust as it is shown in figure 1, concrete steps such as
Under:
Taking 2000g silver-zinc crust addition 200g calcium oxide and carry out oxidizing roasting, oxidizing roasting is divided into three phases,
First stage is roasted to roasting 2 hours under the sintering temperature of 700 DEG C, then carries out second stage roasting,
Roasting 2 hours under the sintering temperature of 800 DEG C, finally carry out phase III roasting, the roasting of 1000 DEG C
Roasting temperature 1 hour, whole roasting process constantly rolls so that it is roasting is uniform；Afterwards by after roasting
Silver-zinc crust is pulverized in ball mill and mixes, and crosses 150 mesh sieves, and now the element component content in silver-zinc crust is
(thorough roasting ball milling): lead: 4.14%, silver: 10.49%, bismuth: 20.39%, zinc: 25.67,
Granularity: 150 mesh.
Take the silver-zinc crust after 1000g sieves in the acid-resistant reacting kettle of 10L use for laboratory, reactor adds
Enter hydrochloric acid solution (concentration of hydrochloric acid solution is 3mol/L), hydrochloric acid solution with sieve after the volume of silver-zinc crust
Mass ratio (mL/g) is 5:1, adds 5mL hydrochloric acid solution, and add in the silver-zinc crust after i.e. 1g sieves
Sodium chlorate 60g, reacts 3h at 90 DEG C, and the pH value controlling reaction end is 0.8, cold after having reacted
But acid leaching solution and acidic leaching residue it are filtrated to get.
In above-mentioned acid leaching solution, it is slowly added to 180g zinc powder, makes zinc powder dense for the end in acid leaching solution
Degree is 30g/L, is simultaneously introduced 5g polyacrylamide, makes the final concentration in polyacrylamide acid leaching solution
For 1g/L, displacement reaction 2 hours at 50 DEG C, after having reacted, it is filtrated to get sponge bismuth and displaced liquid；
Sponge bismuth obtains thick bismuth through casting mold, and displaced liquid evaporative crystallization after purifying obtains zinc chloride.
Sodium sulfite solution (concentration 250g/L of sodium sulfite solution) is added in above-mentioned acidic leaching residue,
Wherein sodium sulfite solution is 6:1 with volume mass ratio (mL/g) of acidic leaching residue, i.e. 1g acidity is soaked
Slagging tap middle addition 6mL sodium sulfite solution, the pH value of regulation reactant liquor is 8, reacts 4 at 45 DEG C
Filter after hour, obtain lead skim and leachate；Lead skim returns pyrometallurgical smelting, and leachate adds after purifying
Formalin, at 50 DEG C, reduction reaction obtains argentum powder in 1 hour, wherein in formalin and leachate
Volume mass ratio (mL/g) of silver is 1:5, i.e. silver in 1mL formalin correspondence 5g leachate, leaching
The quality going out the silver in liquid is measured according to this area conventional method, and last argentum powder obtains thick silver through casting mold.
(slag specimen is all for the elemental composition of each metal that the method for the employing present invention reclaims and direct yield such as table 1 below
Dry weight.)
Table 1
| Title | Metering | Lead % | Silver % | Bismuth % | Zinc | Major metal direct yield % |
| Lead skim | 467.48g | 8.53 | 0.26 | 1.37 | 0.84% | Vertical yield: 96.3 |
| Argentum powder | 107.05g | 93.78 | Silver direct yield: 95.7 | |||
| Sponge bismuth | 222.03g | 86.43 | Bismuth direct yield: 94.1 | |||
| Zinc chloride liquid contains zinc | 5.35L | 42.65g/L | Zinc direct yield: 88.9 |
Embodiment 2
The production method flow chart of the present embodiment wet method synthetical recovery silver-zinc crust as it is shown in figure 1, concrete steps such as
Under:
Taking 2000g silver-zinc crust addition 60g calcium oxide and carry out oxidizing roasting, oxidizing roasting is divided into three phases,
First stage is roasted to roasting 6 hours under the sintering temperature of 400 DEG C, then carries out second stage roasting,
Roasting 4 hours under the sintering temperature of 700 DEG C, finally carry out phase III roasting, the roasting of 800 DEG C
Roasting temperature 3 hours, whole roasting process constantly rolls so that it is roasting is uniform；Afterwards by after roasting
Silver-zinc crust is pulverized in ball mill and mixes, and crosses 200 mesh sieves, and now the element component content in silver-zinc crust is
(thorough roasting ball milling): lead: 10.32%, silver: 15.46%, bismuth: 25.49%, zinc: 30.16,
Granularity: 200 mesh.
Take the silver-zinc crust after 1000g sieves in the acid-resistant reacting kettle of 10L use for laboratory, reactor adds
Enter hydrochloric acid solution (concentration of hydrochloric acid solution is 4mol/L), hydrochloric acid solution with sieve after the volume of silver-zinc crust
Mass ratio (mL/g) is 6:1, adds 6mL hydrochloric acid solution, and add in the silver-zinc crust after i.e. 1g sieves
Sodium chlorate 80g, reacts 4h at 90 DEG C, and the pH value controlling reaction end is 0.2, cold after having reacted
But acid leaching solution and acidic leaching residue it are filtrated to get.
In above-mentioned acid leaching solution, it is slowly added to 260g zinc powder, makes zinc powder dense for the end in acid leaching solution
Degree is 70g/L, is simultaneously introduced 7g polyacrylamide, makes the final concentration in polyacrylamide acid leaching solution
For 3g/L, displacement reaction 2 hours at 55 DEG C, after having reacted, it is filtrated to get sponge bismuth and displaced liquid；
Sponge bismuth obtains thick bismuth through casting mold, and displaced liquid evaporative crystallization after purifying obtains zinc chloride.
Sodium sulfite solution (concentration 300g/L of sodium sulfite solution) is added in above-mentioned acidic leaching residue,
Wherein sodium sulfite solution is 6:1 with volume mass ratio (mL/g) of acidic leaching residue, i.e. 1g acidity is soaked
Slagging tap middle addition 6mL sodium sulfite solution, the pH value of regulation reactant liquor is 9, reacts 5 at 40 DEG C
Filter after hour, obtain lead skim and leachate；Lead skim returns pyrometallurgical smelting, and leachate adds after purifying
Formalin, at 30 DEG C, reduction reaction obtains argentum powder in 2 hours, wherein in formalin and leachate
Volume mass ratio (mL/g) of silver is 1:2, i.e. silver in 1mL formalin correspondence 2g leachate, leaching
The quality going out the silver in liquid is measured according to this area conventional method, and last argentum powder obtains thick silver through casting mold.
(slag specimen is all for the elemental composition of each metal that the method for the employing present invention reclaims and direct yield such as table 2 below
Dry weight.)
Table 2
| Title | Metering | Lead % | Silver % | Bismuth % | Zinc | Major metal direct yield % |
| Lead skim | 502.62g | 19.67 | 0.14 | 1.55 | 1.29% | Vertical yield: 95.8 |
| Argentum powder | 162.47g | 91.54 | Silver direct yield: 96.2 | |||
| Sponge bismuth | 282.06g | 85.49 | Bismuth direct yield: 94.6 | |||
| Zinc chloride liquid contains zinc | 6.53L | 41.15g/L | Zinc direct yield: 89.1 |
Those of ordinary skill in the field it is understood that the discussion of any of the above embodiment is exemplary only,
It is not intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Think of in the present invention
Under road, can also be combined between the technical characteristic in above example or different embodiment, and exist
Other change of the many of the different aspect of the present invention as above, in order to concisely they carry in details
Supply.Therefore, all within the spirit and principles in the present invention, any omission of being made, amendment, equivalent,
Improve, should be included within the scope of the present invention.
Claims (10)
1. the method for a wet method synthetical recovery silver-zinc crust, it is characterised in that comprise the following steps:
A, in silver-zinc crust add calcium oxide carry out oxidizing roasting, carry out ball milling afterwards and sieve, obtain ball milling
Silver-zinc crust after sieving；
Adding hydrochloric acid solution in b, silver-zinc crust after ball milling sieves and oxidant reacts, reaction completes
Rear cold filtration obtains acid leaching solution and acidic leaching residue；
C, acid leaching solution adds zinc powder and flocculant carry out displacement reaction, filter after having reacted
To sponge bismuth and displaced liquid；Afterwards sponge bismuth is carried out casting mold and obtain thick bismuth；
D, displaced liquid evaporative crystallization after purifying obtains zinc chloride；
E, in acidic leaching residue add sodium sulfite solution react, be filtrated to get lead after having reacted
Slag and leachate, return lead skim to pyrometallurgical smelting afterwards；
F, leachate addition formalin after purifying carries out reduction reaction and obtains argentum powder, afterwards to argentum powder
Carry out casting mold and obtain thick silver.
The method of wet method synthetical recovery silver-zinc crust the most according to claim 1, it is characterised in that step
The 3-10% that addition is described silver-zinc crust quality of calcium oxide described in rapid a；Described oxidizing roasting includes three
In the individual stage, first stage sintering temperature is 400-700 DEG C, and the time is 2-6 hour；Second stage roasting temperature
Degree is for 700-800 DEG C, and the time is 2-4 hour；Phase III sintering temperature is 800-1000 DEG C, and the time is
1-3 hour.
The method of wet method synthetical recovery silver-zinc crust the most according to claim 1, it is characterised in that step
Sieve as crossing 100-300 mesh sieve described in rapid a.
The method of wet method synthetical recovery silver-zinc crust the most according to claim 1, it is characterised in that step
Described in rapid b, the concentration of hydrochloric acid solution is 2-5mol/L, described ball milling sieve after silver-zinc crust and described hydrochloric acid
The mass volume ratio of solution is to add described in 4-6mL in the silver-zinc crust after ball milling described in 1:4-6, i.e. 1g sieves
Hydrochloric acid solution.
The method of wet method synthetical recovery silver-zinc crust the most according to claim 1, it is characterised in that step
Described in rapid b, oxidant is sodium chlorate, and addition is the silver-zinc crust quality after described ball milling sieves
5-10%；The temperature of described reaction is 90-95 DEG C, and the time of reaction is 2-5h, controls the pH of reaction end
Value is: 0 ＜ pH ＜ 1.
The method of wet method synthetical recovery silver-zinc crust the most according to claim 1, it is characterised in that step
Described in rapid c, zinc powder addition is 30-70g/L；Described flocculant is polypropylene milling amine, and addition is
1-3g/L；The temperature of described displacement reaction is 40 DEG C-70 DEG C, and the time of reaction is 1-3 hour.
The method of wet method synthetical recovery silver-zinc crust the most according to claim 1, it is characterised in that step
Described in rapid e, the concentration of sodium sulfite solution is 200-300g/L, described acidic leaching residue and described sulfurous acid
The mass volume ratio of sodium solution is to add sulfurous acid described in 3-7mL in acidic leaching residue described in 1:3-7, i.e. 1g
Sodium solution.
The method of wet method synthetical recovery silver-zinc crust the most according to claim 1, it is characterised in that step
Described in rapid e, the temperature of reaction is 40 DEG C-60 DEG C, and the time of reaction is 3-6 hour, and the pH value of reaction is:
8-10。
The method of wet method synthetical recovery silver-zinc crust the most according to claim 1, it is characterised in that step
The volume mass of formalin described in rapid f and the silver in leachate ratio is for formaldehyde described in 1:2-5, i.e. 1mL
Silver in solution correspondence 2-5g leachate；The temperature of described reduction reaction is 30 DEG C-50 DEG C, the time of reaction
For 1-2 hour.
The method of wet method synthetical recovery silver-zinc crust the most according to claim 1, it is characterised in that step
The component content of the silver-zinc crust after ball milling sieves described in rapid a is: lead 2%-20%, silver 2%-30%, bismuth
10%-50%, zinc 20%-50%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107937725A (en) * | 2017-11-28 | 2018-04-20 | 郴州市金贵银业股份有限公司 | A kind of technique that valuable metal is recycled from silver-zinc crust |
| CN108018431A (en) * | 2017-12-15 | 2018-05-11 | 郴州市金贵银业股份有限公司 | The recovery method of valuable metal in a kind of silver-zine slag |
| CN108842072A (en) * | 2018-08-24 | 2018-11-20 | 淄博淦达环保科技有限公司 | A kind of leaching liquid and extract technology of zinc |
| CN113481371A (en) * | 2021-07-07 | 2021-10-08 | 江西理工大学 | Method for efficiently recovering antimony, bismuth, copper and silver from silver separating slag of lead anode slime |
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| CN113481371A (en) * | 2021-07-07 | 2021-10-08 | 江西理工大学 | Method for efficiently recovering antimony, bismuth, copper and silver from silver separating slag of lead anode slime |
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