CN101775491A - Electro-oxidation leaching method of molybdenite - Google Patents
Electro-oxidation leaching method of molybdenite Download PDFInfo
- Publication number
- CN101775491A CN101775491A CN201010300988A CN201010300988A CN101775491A CN 101775491 A CN101775491 A CN 101775491A CN 201010300988 A CN201010300988 A CN 201010300988A CN 201010300988 A CN201010300988 A CN 201010300988A CN 101775491 A CN101775491 A CN 101775491A
- Authority
- CN
- China
- Prior art keywords
- molybdenum
- carbonate
- glance
- concentrate
- electrolysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Electrolytic Production Of Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to an electro-oxidation leaching method of molybdenite, which is characterized in that molybdenite concentrate or midding carries out no-diaphragm electrolysis in sodium chloride solution containing carbonate hydrochloride or carbonate; molybdenite is selectively oxidized and leached, copper, bismuth, nickel and other metal sulfide minerals cannot be oxidized, left in solid residue, filtered and separated, quite pure molybdate solution is prepared, and molybdate products can be produced through extraction, stripping, crystallization and other conventional molybdenum metallurgical processes; and copper, bismuth, nickel and other minerals containing in molybdenum concentrate or molybdenum are recovered in leaching residue. By adopting carbonate hydrochloric acid type carbonate system to carry out the electro-oxidation leaching to the molybdenite, the electro-oxidation leaching method of molybdenite significantly improves the current efficiency and the molybdenum leaching rate of an electro-oxidation process, and is characterized by high current efficiency, good selectivity, high metal recovery rate, mild process conditions, no pollution and the like.
Description
Technical field
The invention belongs to the molybdenum technical field of wet metallurgy, relate generally to a kind of wet oxidation leaching method of molybdenum glance.
Background technology
Molybdenum glance is topmost industrial molybdenum-bearing mineral, and the molybdenum glance concentrate that ore dressing is at present produced mainly is to adopt " oxidizing roasting-ammonia soaks " explained hereafter ammonium molybdate product, though this technology is very ripe aspect the standard of processing concentrated molybdenum ore, can produce a large amount of SO
2Gas and contaminate environment, and can cause the volatilization loss of association rhenium element in the concentrated molybdenum ore.In recent years, along with Mineral resources are poor day by day, thin, assorted, it is increasing to only depend on single floatation process to obtain the technical difficulty of qualified concentrated molybdenum ore, often only can produce metal for some complex multi-metal ore deposits and contain mineral products in higher mixing concentrated molybdenum ore or the molybdenum mutually, as molybdenum copper collective concentrate, molybdenum bismuth collective concentrate, molybdenum nickel collective concentrate etc., " oxidizing roasting-ammonia soaks " technology is difficult to realize that for this kind concentrated molybdenum ore or molybdenum chats the economical and efficient of molybdenum and associated metal reclaims.Therefore, press for the new molybdenum hydrometallurgical technology of development.
It is the gordian technique of molybdenum hydrometallurgy that the wet oxidation of molybdenum glance decomposes, since the seventies in last century, the molybdenum Wetting decomposition process is paid attention to deeply and is developed rapidly, has succeeded in developing in nitric acid oxidation decomposition technique, strongly-acid or the strongly basic medium oxygen in succession and has pressed and boil technology, electrooxidation technology and bioleaching process etc.Wherein, electrooxidation technology has characteristics such as leaching process mild condition, metal recovery rate height, environmental friendliness and is gazed at deeply.
U.S. mineral office leached the generation of by product oxymuriate in the molybdenum glance process and caused the not high factor of current efficiency to be investigated electrooxidation technology in 1975, studies show that, under the excessive situation of low temperature, low pH, low current density, molybdenum glance, can reduce the generation of oxymuriate; The generation of hypochlorite is the controlled step (D.S.Barr of whole leaching process, R.E.Lindstrom, J.L.Hendrix.Control of the chlorate factor in electrooxidationleaching of molybdenum concentrates.International Journal of MineralProcessing, 1975,2 (4): 303-320).Research is subsequently also found, under cold condition, adopt successive through type electrolyzer to produce the oxymuriate of less amount than intermittent type electrolyzer, make current efficiency be improved (D.S.Barr, B.J.Scheiner, J.L.Hendrix.Examination of the chlorate factor inelectro-oxidation leaching of molybdenum concentrates using flow-through cells.International Journal of Mineral Processing, 1977,4 (2): 83-88).
United States Patent (USP) (US3755104) in 50～105 ℃ of temperature ranges, anodic current density greater than 500A/m
2, acidity 10%HCl the acid chloride medium in, adopt electrolytic process that the molybdenum in the molybdenum glance product, rhenium sulfide are leached recovery, obtained satisfied technical indicator.
The symbol sword has just waited to be studied electrooxidation technology leaching brightness concentrated molybdenum ore process, and the result shows at NaCl concentration 4.0mol/L, liquid-solid ratio 20, the initial pH=8 of ore pulp, current density 700A/m
2, bath voltage is under the condition of 2.7～2.9V, the molybdenum leaching yield is 98%, current efficiency 36%.Adopt ultrasonic field that the molybdenum leaching process is strengthened, the current efficiency of electrooxidation brings up to 50% by 36%, the molybdenum leaching yield surpasses 98% (Fu J G, Zhong H.Electro-oxidation Process for MolybdenumConcentrates[J] .Cent.South Univ.Technol., 2005,2 (2): 134-140.).
Cao Zhanfang etc. study the electrooxidation leaching process of molybdenum glance in the acid chlorization sodium solution, discovery is under the excessive situation of oxygenant, the leaching apparent activation energy that electrooxidation leaches the molybdenum glance process is 8.2kJ/mol, mainly be subjected to diffusion control (CAOZhan-fang, ZHONG Hong, LIU Guang-yi, FU Jian-gang, WANG Shuai, QIU Yun-ren.Electric-Oxidation Kinetics of Molybdenite Concentrate in Acidic NaCl Solution.The Canadian Journal of Chemical Engineering, 2009,87 (6): 939-944.).
In existing molybdenum glance electrooxidation method, because the molybdenum glance electro-oxidation process has acid to produce, the molybdenum glance electro-oxidation process all carries out in acidic medium basically, in the molybdenum glance oxygenolysis, the also mostly oxidized decomposition of other metal sulfide ore that contains in the molybdenum glance concentrate and entering in the solution, not only cause the electro-oxidation process current draw big, and heavy metal ion such as copper, iron are to follow-up molybdenum purification of leaching liquor, the extraction of molybdenum rhenium and technology such as separate and cause and have a strong impact on.Therefore, existing molybdenum glance electrooxidation method is not suitable for the processing that contains mineral products in higher mixing concentrated molybdenum ore or the molybdenum as metals such as molybdenum copper collective concentrate, molybdenum bismuth collective concentrate, molybdenum nickel collective concentrates mutually.
Summary of the invention
Therefore, the present invention proposes a kind of molybdenum glance electrooxidation leaching method that adopts carbonate acid carbonate system, molybdenum glance concentrate or chats are carried out diaphragm-free electrolysis in the sodium chloride solution that contains the carbonate acid carbonate, molybdenum glance is leached by the selectivity oxidation, metal sulfide ores such as copper, bismuth, nickel then can not oxidations and are stayed in the solid slag, obtain the comparatively purified molybdate aqueous solution after the filtering separation; Sulfide minerals such as copper, bismuth, nickel are then reclaimed in leached mud easily.The present invention is not only applicable to the wet method of molybdenum glance concentrate and decomposes, but also the molybdenum glance selectivity that is specially adapted to products such as molybdenum copper collective concentrate, molybdenum bismuth collective concentrate, molybdenum nickel collective concentrate and molybdenum chats leaches, have the current efficiency height, selectivity is good, metal recovery rate is high, processing condition are gentle and characteristics such as pollution-free, is that a kind of eco-friendly molybdenum glance wet method is decomposed novel method.
At present, still find no the pass and in the sodium chloride solution that contains the carbonate acid carbonate, carry out the research report that the molybdenum glance electrooxidation leaches.
The object of the present invention is to provide the wet-method for leaching of a kind of leaching yield height, low, the eco-friendly molybdenum glance concentrate of energy consumption or chats, the follow-up purification separation technology of favourable molybdenum, the high efficiente callback respectively of metals such as the rhenium of realization molybdenum and association, copper, bismuth, nickel.
The electrooxidation leaching method of molybdenum glance of the present invention is: molybdenum glance concentrate or chats are carried out diaphragm-free electrolysis in containing the sodium chloride solution of carbonate-acid carbonate, be 1%～30% in ore pulp mass percent concentration, electrolytic solution pH8～10, electrolysis voltage are that 2～5v, anodic current density are 100～3000A/m
2, 0～80 ℃ of electrolysis temperature, electrolysis time 2-24 hour condition under, molybdenum-bearing mineral is leached by the selectivity oxidation, containing metal sulfide ores such as copper, bismuth, nickel then can not oxidation and stay in the solid slag, obtains the molybdate aqueous solution after the filtering separation.
In the method for the present invention, the carbonate of use is yellow soda ash and/or volatile salt, and the acid carbonate of use is sodium bicarbonate and/or bicarbonate of ammonia.
In the method for the present invention, the described preferred compositing range that contains the sodium chloride solution of carbonate acid carbonate is: sodium-chlor mass percent concentration is 5～35%, and carbonate mass percent concentration is 0.1～10%, acid carbonate mass percent concentration is 0.1～10%.The preferred concrete scheme of the present invention is, sodium-chlor mass percent concentration is 15～25%, and carbonate mass percent concentration is 1～2%, acid carbonate mass percent concentration 1.2～2.4%.
In the method for the present invention, carbonate can be constantly in and the acidic substance (sulfuric acid or hydrochloric acid) that produced of molybdenum glance electro-oxidation process and producing consume, therefore, can add part carbonate, make the pH value of electro-oxidation process electrolytic solution be controlled at 8～10 scopes at the molybdenum glance electro-oxidation process.
In the method for the present invention, described ore pulp mass percent concentration is 1%～30%, and in the preferred concrete scheme of the present invention, ore pulp mass percent concentration is 10%.
In the method for the present invention, described diaphragm-free electrolysis carries out in undivided cell, and the electrolytic process electrode used therein is a noble electrode, can be graphite, titanium, or is matrix with the titanium, with RuO
2And TiO
2Metal oxide electrode (DSA) for the eelctro-catalyst basal component.
In the method for the present invention, the electrolysis voltage of molybdenum glance diaphragm-free electrolysis is 2～5v, preferred 3.5v; Anodic current density is 100～3000A/m
2, preferred 800～1000A/m
20～80 ℃ of electrolysis temperature generally at room temperature carries out.
In the method for the present invention, described molybdenum glance concentrate or chats are meant with the molybdenum glance to be the beneficiation enrichment product that contains molybdenum ore of main component, comprise mineral products in concentrated molybdenum ore, molybdenum copper collective concentrate, molybdenum bismuth collective concentrate, molybdenum nickel collective concentrate and the molybdenum, the molybdenum grade of molybdenum glance concentrate or chats is 3%～54%.
The wet method that method of the present invention is equally applicable to rhenium-containing concentrated molybdenum ore or chats leaches, under this kind situation, rhenium is entered leach liquor with molybdenum by the selectivity electrooxidation, can adopt conventional molybdenum metallurgical technology such as extraction, back extraction, resin absorption separation, crystallization to produce ammonium molybdate and rehenic acid ammonium product then.
Method of the present invention can be used continuous production, also can carry out by intermittent type.
Method of the present invention is generally carried out under normal pressure.
Embodiment
The present invention is further specified by the following example, but is not subjected to the restriction of these embodiment.All umbers and percentage ratio all refer to quality except as otherwise herein provided among the embodiment.
Embodiment 1:
The molybdenum glance concentrate contains Mo 42.22%, contains Cu 2.90%, and wherein copper mainly exists with the chalcopyrite form.2.5 parts of brightness concentrated molybdenum ores, 4 parts of NaCl and 20 parts of water are joined in the undivided cell, and stirring pulping has been investigated carbonate-acid carbonate and has been formed and the influence of concentration to electro-oxidation process.Selecting DSA anode, iron cathode for use, is that 3.5v, anodic current density are 800A/m at electrolysis voltage
2, room temperature condition under electrolysis 240min.Detect in the leach liquor content of copper in the molybdenum and leached mud after the filtering separation, the results are shown in Table 1.
Table 1 carbonate-acid carbonate is formed and the influence of concentration to electro-oxidation process
By table 1 as seen, adopt method of the present invention, molybdenum leaching yield and current efficiency significantly improve, and the molybdenum leaching yield surpasses 99%, and current efficiency surpasses 62%, and the rate of recovery of copper reaches more than 97% in the leached mud; Different carbonate acid carbonate combinations has almost equal effect.Under identical electrolysis processing condition, do not adopt the electrolytic process of carbonate acid carbonate system, molybdenum leaching yield and current efficiency only are respectively 75.49%, 47.68%, and surpass 76% the oxidized decomposition of copper and enter in the solution.
Embodiment 2:
With 2.5 parts of brightness concentrated molybdenum ores (with embodiment 1), 1 part of Na
2CO
3, 1.2 parts of NH
4HCO
3, 10 parts of NaCl and 50 parts of water add in the undivided cell, stirring pulping is selected DSA anode, iron cathode for use, is that 3.5v, anodic current density are 800A/m at electrolysis voltage
2, room temperature condition under electrolysis 240min.Detect in the leach liquor content of copper in the molybdenum and leached mud after the filtering separation, the leaching yield that draws Mo is 99.89%, and Faradaic current efficient is 62.72%; Contain Cu 10.88% in the slag, the rate of recovery 97.90%.
Embodiment 3:
With 2.5 parts of brightness concentrated molybdenum ores (with embodiment 1), 0.4 part of Na
2CO
3, 0.48 part of NH
4HCO
3, 4 parts of NaCl and 20 parts of water add in the undivided cell, stirring pulping selects for use the spectroscopically pure graphite bar electrode as anode and negative electrode, is that 3.5v, anodic current density are 800A/m at electrolysis voltage
2, room temperature condition under electrolysis 240min.Detect in the leach liquor content of copper in the molybdenum and leached mud after the filtering separation, the leaching yield that draws Mo is 99.73%, and Faradaic current efficient is 62.37%; Contain Cu 10.74% in the slag, the rate of recovery 97.26%.
Embodiment 4:
With 4.1 parts of molybdenum copper collective concentrates (with molybdenum glance and chalcopyrite is main component, wherein Mo 25.64%, Cu 17.30%), 1 part of Na
2CO
3, 1.2 parts of NH
4HCO
3, 10 parts of NaCl and 50 parts of water add in the undivided cell, stirring pulping is selected DSA anode, iron cathode for use, is that 3.5v, anodic current density are 800A/m at electrolysis voltage
2, room temperature condition under electrolysis 240min.Detect in the leach liquor content of copper in the molybdenum and leached mud after the filtering separation, the leaching yield that draws Mo is 99.81%, and Faradaic current efficient is 61.45%; Contain Cu 28.70% in the slag, the rate of recovery 99.08%.
Embodiment 5:
With 6 parts of molybdenum copper mixing ore deposits (with molybdenum glance and chalcopyrite is main component, wherein Mo 8.78%, Cu 23.07%), 1 part of Na
2CO
3, 1.2 parts of NH
4HCO
3, 10 parts of NaCl and 50 parts of water add in the undivided cell, stirring pulping is selected DSA anode, iron cathode for use, is that 3.5v, anodic current density are 800A/m at electrolysis voltage
2, room temperature condition under electrolysis 120min, detect in the leach liquor content of copper in the molybdenum and leached mud after the filtering separation, the leaching yield that draws Mo is 99.09%, Faradaic current efficient is 60.84%; Contain Cu 33.11% in the slag, the rate of recovery 99.45%.
Embodiment 6:
With 2.1 parts of brightness concentrated molybdenum ores (Mo50.12%), 0.4 part of Na
2CO
3, 0.48 part of NH
4HCO
3, 4 parts of NaCl and 20 parts of distilled water add in the undivided cell, stirring pulping is selected DSA anode, iron cathode for use, is that 3.5v, anodic current density are 800A/m at electrolysis voltage
2, room temperature condition under electrolysis 240min, detect the content of molybdenum in the leach liquor after the filtering separation, the leaching yield that draws Mo is 99.19%, Faradaic current efficient is 62.64%.
Embodiment 7:
With 3.8 parts of molybdenum bismuth collective concentrates (with molybdenum glance and bismuthinite is main component, wherein Mo 27.90%, Bi 4.78%), 1 part of Na
2CO
3, 1.2 parts of NH
4HCO
3, 10 parts of NaCl and 50 parts of distilled water add in the undivided cell, stirring pulping is selected DSA anode, iron cathode for use, is that 3.5v, anodic current density are 800A/m at electrolysis voltage
2, room temperature condition under electrolysis 240min, detect in the leach liquor content of bismuth in the molybdenum and leached mud after the filtering separation, the leaching yield that draws Mo is 98.67%, Faradaic current efficient is 60.94%; Contain Bi 19.57% in the slag, the rate of recovery 98.98%.
Embodiment 8:
With 4.4 parts of molybdenum nickel collective concentrates (with molybdenum glance and pentlandite is main component, wherein Mo12.03%, Ni 2.58%), 1 part of Na
2CO
3, 1.2 parts of NH
4HCO
3, 10 parts of NaCl and 50 parts of distilled water add in the undivided cell, stirring pulping is selected DSA anode, iron cathode for use, is that 3.5v, anodic current density are 800A/m at electrolysis voltage
2, room temperature condition under electrolysis 120min, detect in the leach liquor content of nickel in the molybdenum and leached mud after the filtering separation, the leaching yield that draws Mo is 98.34%, Faradaic current efficient is 59.75%; Contain Ni 8.11% in the slag, the rate of recovery 97.87%.
Claims (6)
1. the electrooxidation leaching method of a molybdenum glance, it is characterized in that, molybdenum glance concentrate or chats are carried out diaphragm-free electrolysis in the sodium chloride solution that contains the carbonate acid carbonate, pulp density is 1%～30%, electrolytic solution pH8～10, electrolysis voltage is 2～5v, anodic current density is 100～3000A/m2,0～80 ℃ of electrolysis temperature, electrolysis time 2-24 hour, molybdenum-bearing mineral is leached by the selectivity oxidation, and the metal sulfide ore that contains copper, bismuth or nickel then can not oxidation and stayed in the solid slag, obtains the molybdate aqueous solution after the filtering separation.
2. the electrooxidation leaching method of molybdenum glance according to claim 1, it is characterized in that: described carbonate comprises yellow soda ash and volatile salt, described acid carbonate comprises sodium bicarbonate and bicarbonate of ammonia, consisting of of the described sodium chloride solution that contains the carbonate acid carbonate: sodium-chlor mass percent concentration is 5～35%, and carbonate mass percent concentration is 0.1～10%, acid carbonate mass percent concentration is 0.1～10%.
3. the electrooxidation leaching method of molybdenum glance according to claim 2, it is characterized in that: sodium-chlor mass percent concentration is 15～25%, carbonate mass percent concentration is 1～2%, acid carbonate mass percent concentration 1.2～2.4%.
4. according to the electrooxidation leaching method of each described molybdenum glance of claim 1-3, it is characterized in that: electrolysis voltage is 3.5v; Anodic current density is 800～1000A/m2; Electrolysis temperature is a room temperature.
5. the electrooxidation leaching method of molybdenum glance according to claim 1, it is characterized in that: described molybdenum glance concentrate or chats are meant with the molybdenum glance to be the beneficiation enrichment product that contains molybdenum ore of main component, comprise mineral products in concentrated molybdenum ore, molybdenum copper collective concentrate, molybdenum bismuth collective concentrate, molybdenum nickel collective concentrate or the molybdenum, the molybdenum grade of molybdenum glance concentrate or chats is 3%～54%.
6. the electrooxidation leaching method of molybdenum glance according to claim 1, it is characterized in that: described diaphragm-free electrolysis carries out in undivided cell, the electrolytic process electrode used therein is a noble electrode, be selected from graphite, titanium, or be matrix with the titanium, be the metal oxide electrode of eelctro-catalyst basal component with RuO2 and TiO2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010300988A CN101775491A (en) | 2010-01-30 | 2010-01-30 | Electro-oxidation leaching method of molybdenite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010300988A CN101775491A (en) | 2010-01-30 | 2010-01-30 | Electro-oxidation leaching method of molybdenite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101775491A true CN101775491A (en) | 2010-07-14 |
Family
ID=42512076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010300988A Pending CN101775491A (en) | 2010-01-30 | 2010-01-30 | Electro-oxidation leaching method of molybdenite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101775491A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634818A (en) * | 2012-04-27 | 2012-08-15 | 中南大学 | Bismuth-molybdenum mixed mineral separation method |
| CN104032127A (en) * | 2014-06-10 | 2014-09-10 | 中南大学 | Technique for leaching molybdenum from nickel-molybdenum ores by pulp electrolysis |
| CN106811768A (en) * | 2017-02-24 | 2017-06-09 | 中南大学 | A kind of method for processing bismuth sulfide ore |
| CN110438348A (en) * | 2019-09-05 | 2019-11-12 | 武汉理工大学 | A kind of leaching method of molybdenite |
| CN114686683A (en) * | 2020-12-31 | 2022-07-01 | 中南大学 | Method for recovering multiple metal elements from molybdenite based on molybdenum calcine |
| CN115180649A (en) * | 2022-08-25 | 2022-10-14 | 中南大学 | Method for preparing high-purity bismuth oxychloride from molybdenum-bismuth sulfide ore |
-
2010
- 2010-01-30 CN CN201010300988A patent/CN101775491A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634818A (en) * | 2012-04-27 | 2012-08-15 | 中南大学 | Bismuth-molybdenum mixed mineral separation method |
| CN104032127A (en) * | 2014-06-10 | 2014-09-10 | 中南大学 | Technique for leaching molybdenum from nickel-molybdenum ores by pulp electrolysis |
| CN104032127B (en) * | 2014-06-10 | 2016-07-06 | 中南大学 | A kind of slurry electrolysis is the technique of Leaching Molybdenum from nickel-molybdenum ore |
| CN106811768A (en) * | 2017-02-24 | 2017-06-09 | 中南大学 | A kind of method for processing bismuth sulfide ore |
| CN110438348A (en) * | 2019-09-05 | 2019-11-12 | 武汉理工大学 | A kind of leaching method of molybdenite |
| CN114686683A (en) * | 2020-12-31 | 2022-07-01 | 中南大学 | Method for recovering multiple metal elements from molybdenite based on molybdenum calcine |
| CN114686683B (en) * | 2020-12-31 | 2024-01-30 | 中南大学 | Method for recycling multiple metal elements from molybdenite based on molybdenum calcine |
| CN115180649A (en) * | 2022-08-25 | 2022-10-14 | 中南大学 | Method for preparing high-purity bismuth oxychloride from molybdenum-bismuth sulfide ore |
| CN115180649B (en) * | 2022-08-25 | 2023-10-27 | 中南大学 | Method for preparing high-purity bismuth oxychloride from molybdenum bismuth sulfide ore |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Shen et al. | Review of rhenium extraction and recycling technologies from primary and secondary resources | |
| CN102084034B (en) | Electrochemical process for the recovery of metallic iron and sulfuric acid values from iron-rich sulfate wastes, mining residues and pickling liquors | |
| CA2860614C (en) | Recovering lead from a mixed oxidized material | |
| CN104630826B (en) | Technique for recovering tin from tin anode sludge | |
| US9683277B2 (en) | Process for preparing a ferric nitrate reagent from copper raffinate solution and use of such reagent in the leaching and/or curing of copper substances | |
| CN101775491A (en) | Electro-oxidation leaching method of molybdenite | |
| CA2829663C (en) | Gold and silver extraction technology | |
| JP2014501850A (en) | Electrical recovery of gold and silver from thiosulfate solutions | |
| CN112458280A (en) | Method for extracting valuable metals by leaching low grade nickel matte with acidic etching solution | |
| CN107201448A (en) | high tellurium copper slag treatment method | |
| CN107815540A (en) | A kind of method of hydrometallurgy metal nickel cobalt and its salt product | |
| CN101760611A (en) | Method for wet-method oxidative decomposition of metal sulfide ores | |
| CN104152701B (en) | The method that tin is reclaimed from tin refinement slag | |
| CN104651880B (en) | The method that a kind of decopper(ing) point cyanogen simultaneous PROCESS FOR TREATMENT silver smelts the lean solution containing cyanogen | |
| Yang et al. | The separation and electrowinning of bismuth from a bismuth glance concentrate using a membrane cell | |
| CN113564622B (en) | Method for efficiently separating copper and tellurium from copper telluride material | |
| KR100686985B1 (en) | The nickel collecting method from waste nickel fluid and oxidic acid nickel sludge | |
| CN104962734A (en) | Method for resource utilization of pineapple peel and electrolytic manganese anode slime | |
| CN113373314B (en) | Method for efficiently recycling scattered metal tellurium from cuprous telluride residues | |
| CN108441637A (en) | The method that valuable metal is recycled in giving up chip from copper indium gallium selenium solar hull cell | |
| CN114941076A (en) | Method for extracting and recovering gold from aqueous solution | |
| CN103526044A (en) | Zinc hydrometallurgy process favorable for floatation silver and adopted precipitating silver mixture | |
| JPS62500388A (en) | Production of zinc from ores and concentrates | |
| US4028202A (en) | Direct electrochemical recovery of copper from dilute ammoniacal solutions | |
| CN102433569B (en) | Method for electrolyzing high-alkali gangue type low-grade zinc oxide ore leachate treated by ammonia leaching process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100714 |