CN1058056C - Process of chlorine complexing oxidation method for slective leaching nickel cobalt copper sulfurized ore - Google Patents
Process of chlorine complexing oxidation method for slective leaching nickel cobalt copper sulfurized ore Download PDFInfo
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- CN1058056C CN1058056C CN97115175A CN97115175A CN1058056C CN 1058056 C CN1058056 C CN 1058056C CN 97115175 A CN97115175 A CN 97115175A CN 97115175 A CN97115175 A CN 97115175A CN 1058056 C CN1058056 C CN 1058056C
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- 238000002386 leaching Methods 0.000 title claims abstract description 90
- VDGMIGHRDCJLMN-UHFFFAOYSA-N [Cu].[Co].[Ni] Chemical compound [Cu].[Co].[Ni] VDGMIGHRDCJLMN-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 39
- 230000003647 oxidation Effects 0.000 title claims description 10
- 238000007254 oxidation reaction Methods 0.000 title claims description 10
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title claims description 7
- 239000000460 chlorine Substances 0.000 title claims description 7
- 229910052801 chlorine Inorganic materials 0.000 title claims description 7
- 230000000536 complexating effect Effects 0.000 title claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 26
- 239000010949 copper Substances 0.000 claims abstract description 25
- 229910052802 copper Inorganic materials 0.000 claims abstract description 22
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000001301 oxygen Substances 0.000 claims abstract description 18
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 18
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 12
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 12
- 239000010941 cobalt Substances 0.000 claims abstract description 12
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 12
- 238000005516 engineering process Methods 0.000 claims abstract description 9
- 239000011780 sodium chloride Substances 0.000 claims abstract description 9
- 239000011593 sulfur Substances 0.000 claims abstract description 9
- 238000013019 agitation Methods 0.000 claims abstract description 7
- 229910021607 Silver chloride Inorganic materials 0.000 claims abstract description 5
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 claims abstract description 5
- 230000033116 oxidation-reduction process Effects 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 17
- 239000012452 mother liquor Substances 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 5
- 239000011343 solid material Substances 0.000 claims description 4
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims description 3
- 239000007800 oxidant agent Substances 0.000 claims description 3
- 230000002411 adverse Effects 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 28
- 239000012141 concentrate Substances 0.000 abstract description 16
- 229910052742 iron Inorganic materials 0.000 abstract description 11
- 239000002893 slag Substances 0.000 abstract description 7
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 239000003570 air Substances 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000005188 flotation Methods 0.000 description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- 239000011777 magnesium Substances 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- RYTYSMSQNNBZDP-UHFFFAOYSA-N cobalt copper Chemical compound [Co].[Cu] RYTYSMSQNNBZDP-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000005660 chlorination reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052569 sulfide mineral Inorganic materials 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 229910002588 FeOOH Inorganic materials 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- XXEUGVMTDOMTGW-UHFFFAOYSA-N [Cu]=S.[Co].[Ni] Chemical compound [Cu]=S.[Co].[Ni] XXEUGVMTDOMTGW-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052951 chalcopyrite Inorganic materials 0.000 description 1
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 1
- NVIVJPRCKQTWLY-UHFFFAOYSA-N cobalt nickel Chemical compound [Co][Ni][Co] NVIVJPRCKQTWLY-UHFFFAOYSA-N 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 1
- 229940124447 delivery agent Drugs 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 229910052952 pyrrhotite Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-O sulfonium Chemical compound [SH3+] RWSOTUBLDIXVET-UHFFFAOYSA-O 0.000 description 1
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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
- 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
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to the leaching technology of nickel-cobalt-copper mixed sulphide ore. Copper-bearing sodium chloride solutions are taken as leaching agents, and oxygen or air is blown in for two-segment countercurrent agitation leaching; in a first segment of leaching, pH is controlled at 2 to 4, and oxidation-reduction potential is controlled at 380 to 450 mV (relative to AgCl/Ag electrodes); in a second segment of leaching, the pH is controlled at 0.5 to 1 and the potential is controlled at 450 to 850 mV. The present invention leaches nickel-cobalt-copper mixed sulphide ore concentrate, the leaching rate of nickel, cobalt and copper respectively achieves 96% to 99%, 97% to 99%, and 88% to 92%, iron generates oxide which is kept in dipping slag, 85% of sulfur is converted into elementary sulfur, and Fe content in leaching liquor is 0.01 to 0.02 g/l. The present invention is favorable for the leaching liquor to carry out deep processing, and the present invention has obvious application prospect.
Description
The present invention relates to hydrometallurgical processes, particularly relate to a kind of processing method that adopts non-ferrous metal element such as nickel cobalt copper in the chlorine complexing oxidation method for slective leaching sulphide ores.
Sulphide ores is one of main mineral resources of extracting the nickel cobalt.From sulphide ores, extract one of method of nickel cobalt at present, be to adopt flotation-pyrometallurgical smelting-electrolytic process integration of sulfuric acid pressure oxidation leaching-insoluble anode, as document (1) (Richard, W.H., Eng.Min.J., 178 (1977), No.5,76.) described, its flow process comprises the ore comminution after flotation obtains nickel, cobalt, copper collective concentrate, collective concentrate is smelted into low nickel matte in electric furnace or flash stove, separate with impurity such as silicate; Low nickel matte is converting with air sulphur removal, iron in converter, gets high ice nickel (copper); High ice nickel carries out the sulfuric acid pressurization and leaches (130-150 ℃, 0.2-0.5MPa oxygen is pressed), and the leaching liquid of acquisition is through sinking after the purifying treatment such as cobalt and copper removal, iron with insoluble anode electrolysis output finished product nickel; After leaching, pressurization soaks the slag melting after electrorefining obtains electrolytic copper.
Because existing technical process operation is many, complex process, investment and production cost height, recovery rate of valuable metals is low.Existing procedure adopts pyrometallurgical smelting to handle the bulk flotation concentrate, contains the magnesium height in the concentrate slag melting is increased, and reduces the magnesium content in the collective concentrate when requiring flotation as far as possible; Low nickel matte adopts and bessemerizes deironing, and the part cobalt enters converter slag, the cobalt rate of recovery low (≤50%); Emit a large amount of SO in the pyrometallurgical smelting
2, make severe environmental pollution; Adopt pressure oxidation to leach nickel matte, equipment requirements height, operational condition harshness; Adopt sulfuric acid system, cobalt nickel separation difficulty, and current density is low during electrolysis, and plant factor is low.
For addressing the above problem, many contrivers set out from different perspectives, technology some innovative approachs have been proposed, as: the record of AU9536689 patent documentation, the ambrose alloy sulfonium depressed with low-concentration sulfuric acid normal pressure or oxygen leach nickel and copper simultaneously, to the deep-etching effect of equipment, and for example: the CA2064543 patent documentation is put down in writing, and adopts acid FeCl when leaching to reduce strong acid
3Solution leaches Ni, Co, Cu from sulphide ores, to improve recovery rate of valuable metals, reduce the pollution to environment, and raise the efficiency, and is technical unreasonable owing to itself still existing though aforesaid method can solve some problem that exists in the prior art, as FeCl
3Be difficult to after the leaching from the leaching mother liquor, isolate valuable metals such as Ni, Co, Cu, implement industrial application and still have big difficulty.
The objective of the invention is to overcome shortcoming and technologic unreasonable part on the prior art, from sulphide ores, extract the total recovery of valuable metals, particularly cobalt such as nickel, copper, and eliminate and mix SO in the vulcanised ore concentrate pyrometallurgical smelting process with raising
2Pollution to environment, overcome a series of weak points of sulfuric acid system simultaneously, thereby provide a kind of employing cupric sodium chloride solution to do leaching liquid, blast the technology that oxygen or air oxidant carry out the chlorine complexing oxidation method for slective leaching nickel copper cobalt mixing sulphide ores of two sections contrary agitation leachs in the leaching process.
The object of the present invention is achieved like this:
Chlorine complexing oxidation method for slective leaching technology of the present invention is used to leach nickel cobalt copper bulk flotation concentrate.Ambrose alloy cobalt bulk flotation concentrate mainly is made up of pyrrhotite, violarite, pyrite, chalcopyrite and silicate gangue, adopts the cupric sodium chloride solution to make initial leaching liquid, and this leaching liquid is 5～45g/L Cu
2+, 40～250g/L NaCl, the cupric ion in the leaching liquid is the delivery agent or the oxidising process catalyzer of oxygen, and the oxidizing reaction of sulfide mineral is accelerated; Leaching divides two sections adverse currents to carry out in stirred autoclave, and every section is controlled at differing temps, redox potential and pH scope, blasts oxygen or air in the leaching process continuously, blasts oxygen or air capacity controlled oxidation reduction potential by adjusting.In the chlorinated solution oxygen leaching process, the chlorination medium solution provides the high-dissolvability of metal ion, suitably certain oxidizing atmosphere has been created in the inflation (air or oxygen) under the pressure, make Ni, Co, Cu oxidation dissolution from sulfide respectively, petrogenic elements such as Si, Mg, Ca are stayed with insoluble silicate form and are soaked in the slag, under control pH condition, Fe is converted into insoluble oxide compound, as rhombohedral iron ore (Fe
2O
3), pyrrhosiderite (FeOOH) or limonite (Fe
5O
7(OH) 4H
2O), stay and soak in the slag, thereby reach effective isolating purpose.Its concrete technical process is as shown in Figure 2:
1) nickel cobalt copper mixing sulphide ores enters first section and stirs the leaching still, 75～90 ℃ of leaching temperatures, and control pH value of solution=2～4 and redox potential are at 360～450mV (AgCl/Ag electrode relatively), and leaching liquid is from the mother liquor that leaches of second section leaching.In leaching process, rely on the speed control redox potential of regulating aerating oxygen or air.First section main nickel and cobalt of leaching, simultaneously, under control pH value of solution and redox potential, the iron in the sulfide is converted into oxide compound and does not enter solution, thereby Fe content is reduced to the low-level of 0.01g/L in the leaching mother liquor.In the leaching process, part copper ion in the solution and sulfide reaction generate copper sulfide minerals such as copper glance or copper orchid.
2) leach ore pulp and carry out solid-liquid separation, the leaching mother liquor enters subsequent processing and removes to extract copper, cobalt, nickel;
3) solid materials enters second section agitation leach still, adds initial cupric sodium chloride solution and makes the leaching medium, and this solution can be prepared with isolating leaching mother liquor after first section leaching.Leaching is carried out under a neutral temperature a little less than the solution boiling point (as 100 ℃), and pH value of solution=0.5～1 and redox potential are in 450～850mV (AgCl/Ag electrode relatively) scope.When blasting air oxidant, leaching time is 3～7 hours; Blast oxygen when making oxygenant, leaching time 2～5 hours.
4) leach the back ore pulp and carry out liquid-solid separation, solution enters first section agitation leach still after adding alkali adjustment pH.In the whole leaching process, the sulphur in the 85% above sulfide changes into elementary sulfur, can reclaim elementary sulfur with methods such as flotation from the solid materials after leaching.
The present invention compared with prior art has following outstanding advantage:
Directly leach the bulk flotation concentrate, the total recovery of cobalt is increased substantially, reach more than 90%;
Leaching is compared with existing flow process in normal pressure and middle temperature (75-100 ℃) operation down, and temperature of reaction and working pressure descend significantly, and facility investment and production cost reduce significantly;
Adopt the chlorination medium, be convenient to leach nickel cobalt extracting and separating in the mother liquor;
Control pH value of solution and redox potential in the leaching, iron is not leached basically, leach in the mother liquor iron content very low (0.01～0.02g/L), the iron removal step of nickel electrodeposition catholyte is simplified;
In nickel, the cobalt leaching process, do not consume leach liquor in principle, a consumed cabin air or oxygen go out agent as oxygen, and production cost is low;
Magnesium does not enter leach liquor in the leaching process, does not require magnesium content in the restriction flotation concentrate;
The output elementary sulfur is a byproduct, and no pyrogenic process process is not emitted SO in the process
2, reduce pollution level significantly, improve operation and living environment.It is a kind of environmentally friendly, clean process method of meeting the sustainable technologies criterion.
The present invention is described in detail below in conjunction with drawings and Examples:
Accompanying drawing 1 is existing process flow diagram, and accompanying drawing 2 is process flow diagrams of the present invention.
Embodiment 1. presses technical process shown in the accompanying drawing 2, and leaching Ni, Co, Cu transform elementary sulfur from a kind of mixed Ni cobalt copper flotation concentrate (7.74%Ni, 0.69%Co, 2.01%Cu and 47.0%Fe and 33.1%S), deposit Fe simultaneously in soaking slag.Concentrate is put into the agitation leach reactor, carry out first section leaching under 85 ℃, this section leaching liquid behind second section leaching mother liquor adjustment pH=2.5 leaches terminal point redox potential 415mV, pH value of solution=2.4, leaching time 3 hours; Second section leaching controlled temperature is 98 ℃, leaching terminal point current potential 640mV, pH=0.9, leaching time 3 hours.When second section leaching, add initial leaching liquid, contain 120g/L NaCl, 21.6g/L Cu
2+, pH=0.9.All blast oxygen in two sections leaching processes and make oxygenant, regulate oxygen flow controlled oxidation reduction potential.This mixes vulcanised ore concentrate after two sections leachings, and the leaching yield of Ni, Co, Cu is respectively 98.1%, 97.5% and 89.3%, and elementary sulfur transformation efficiency 87% leaches mother liquor and contains 0.015g/L Fe.
Embodiment 2. leaches a kind of mixed Ni cobalt copper flotation concentrate by technical process shown in the accompanying drawing 2, contain 4.10%Ni, 0.40%Co, 0.69%Cu, 44.4%Fe and 28.6%S, first section leaching carried out under 80 ℃, blast air, control pH=2.6, redox potential 430mV, subsequent leaching 3 hours; Second section leaching carried out at 95 ℃, control pH=1.0, redox potential 580mV, subsequent leaching 4 hours.Initial leaching liquid contains 19.3g/L Cu
2+, 120g/L NaCl.Through two sections leachings, the leaching yield of Ni, Co, Cu is respectively 96.8%, 98.5% and 87.5%, and the elementary sulfur transformation efficiency is 88.3%, leaches in the mother liquor to contain 0.01g/L Fe.
A kind of mixed Ni cobalt copper flotation concentrate of embodiment 3. leachings contains l3.1%Ni, 0.70%Co, 4.96%Cu, 48.6%Fe and 32.8%S, and leaching technology is identical with embodiment 1 with condition.Through two sections leachings, the leaching yield of Ni, Co, Cu is respectively 98.8%, 99.5% and 91.5%, and the transformation efficiency of sulphur is 91.3%, leaches in the mother liquor to contain 0.02g/L Fe.
Claims (2)
1. the technology of a chlorine complexing oxidation method for slective leaching nickel cobalt copper mixing sulphide ores, it is characterized in that leaching divides two sections adverse currents to carry out in stirred autoclave, adopt the cupric sodium chloride solution of 5～45g/L Cu2+, 40～250g/L NaCl concentration to make initial leaching liquid, blast oxygen or air oxidant in the leaching process, follow these steps to order and carry out:
1) nickel cobalt copper mixing sulphide ores enters first section agitation leach reactor, leaching liquid is taken from isolating mother liquor after second section leaching, 75～90 ℃ of leaching temperatures, pH=2～4, blast oxygen or air controlled oxidation reduction potential at 360～450mV (AgCl/Ag electrode relatively), subsequent leaching 2～7 hours;
2) leach ore pulp and carry out common solid-liquid separation, the leaching mother liquor after the separation is used to extract nickel, cobalt, copper;
3) solid materials enters second section agitation leach reactor, add initial cupric leaching liquid, control pH value of solution=0.5～1 blasts oxygen or air and makes redox potential reach 450～850mV (AgCl/Ag electrode relatively), subsequent leaching 3～7 hours in the leaching process;
4) second section leaching ore pulp carries out solid-liquid separation, and solid materials discards after being used to reclaim elementary sulfur, and the leaching mother liquor returns first section leaching reactor and makes leaching liquid.
2. by the technology of the described chlorine complexing oxidation method for slective leaching nickel cobalt copper mixing of claim 1 sulphide ores, it is characterized in that: described two sections leach liquors return and add alkali when first section leaching reactor made leaching liquid, keep in pH=2～4 scopes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97115175A CN1058056C (en) | 1997-07-28 | 1997-07-28 | Process of chlorine complexing oxidation method for slective leaching nickel cobalt copper sulfurized ore |
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|---|---|---|---|
| CN97115175A CN1058056C (en) | 1997-07-28 | 1997-07-28 | Process of chlorine complexing oxidation method for slective leaching nickel cobalt copper sulfurized ore |
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| CN1058056C true CN1058056C (en) | 2000-11-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101278064B (en) * | 2005-10-03 | 2010-09-15 | 奥图泰有限公司 | Process for treating nickel-containing feedstock by chloride-based leaching |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320137C (en) * | 2002-12-31 | 2007-06-06 | 熊尚彬 | Compound leaching agent and leaching method for leaching out copper pyrite using compound leaching agent |
| JP5125597B2 (en) * | 2008-02-25 | 2013-01-23 | 住友金属鉱山株式会社 | Method for hydrometallizing nickel oxide ore |
| AU2008101213B8 (en) * | 2008-09-10 | 2010-04-29 | Murrin Murrin Operations Pty Ltd | Method for Leaching Nickel |
| IN2015DN01546A (en) * | 2012-08-22 | 2015-07-03 | Bhp Chile Inc | |
| JP7277084B2 (en) * | 2018-06-27 | 2023-05-18 | 住友金属鉱山株式会社 | Method for separating copper from nickel and cobalt |
| CN113881843B (en) * | 2021-05-31 | 2024-03-22 | 金川集团股份有限公司 | Production system and production method for reducing magnesium content in nickel concentrate |
| CN113584304A (en) * | 2021-07-22 | 2021-11-02 | 白银原点科技有限公司 | Chlorination leaching method of zinc sulfide concentrate |
| CN117248121A (en) * | 2023-09-21 | 2023-12-19 | 中南大学 | A method for leaching valuable elements from nickel concentrate and purifying nickel solution |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1131199A (en) * | 1994-11-15 | 1996-09-18 | 奥托孔普工程承包商公司 | Method for leaching nickel-copper matte |
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- 1997-07-28 CN CN97115175A patent/CN1058056C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1131199A (en) * | 1994-11-15 | 1996-09-18 | 奥托孔普工程承包商公司 | Method for leaching nickel-copper matte |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101278064B (en) * | 2005-10-03 | 2010-09-15 | 奥图泰有限公司 | Process for treating nickel-containing feedstock by chloride-based leaching |
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| Publication number | Publication date |
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| CN1206747A (en) | 1999-02-03 |
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