CN101403035B - Method for comprehensive exploitation of low-ore grade laterite nickel mine - Google Patents
Method for comprehensive exploitation of low-ore grade laterite nickel mine Download PDFInfo
- Publication number
- CN101403035B CN101403035B CN2008101433828A CN200810143382A CN101403035B CN 101403035 B CN101403035 B CN 101403035B CN 2008101433828 A CN2008101433828 A CN 2008101433828A CN 200810143382 A CN200810143382 A CN 200810143382A CN 101403035 B CN101403035 B CN 101403035B
- Authority
- CN
- China
- Prior art keywords
- nickel
- hydrochloric acid
- ore
- leaching
- iron
- 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.)
- Active
Links
Classifications
-
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for comprehensively developing low-grade nickeliferous laterite ore. The main technique comprises the steps of the preparation of minerals, chlorination and leaching, the oxidation of leachate, the regeneration of hydrochloric acid and the hydrolysis of settled iron, solid-liquid separation, sulfuration and sediment and the recycling of chloride and the like; the method is characterized in that the nickeliferous laterite ore is leached out by hydrochloric acid and the chloride at normal pressure and iron in the nickeliferous laterite ore is leached out as much as possible; leached ferrous ions are oxidized into ferric ion; the regeneration of hydrochloric acid and hydrolysis of settled iron are realized synchronously under the condition of normal pressure and the temperature of 140 to 180 DEG C; the collection of the regenerated hydrochloric acid prompts the hydrolysis reaction to be complete so as to obtain iron oxide red of byproduct; and after solid-liquid separation, filtrate enriched with nickel and cobalt carries out sulfuration and sediment and chloride solution is recycled. The invention discards the method of pyrohydrolysis or high-temperature roasting in the traditional technique, reduces the energy consumption of removal of iron and the regeneration of hydrochloric acid, improves the leaching rate of the nickel and cobalt and simultaneously develops and utilizes base metal in the ore reasonably so as to increase the additional value of the technique.
Description
Technical field
The invention belongs to the nonferrous metallurgy field, relate to a kind of method of comprehensive exploitation of low-ore grade laterite nickel mine.
Technical background
Nickel is a kind of important strategic metal, and it is widely used in critical material and high-technology fields such as stainless steel, superalloy, catalysis, secondary cell, fuel cell.Along with the development of world economy, high-grade nickel ore resource is exhausted day by day, how to develop the research focus that the low-grade red soil nickel ore that accounts for global nickel reserves about 2/3 has become current metallurgy of nickel effectively.
Red soil nickel ore is divided into limonite type and noumeite type two big classes.The limonite type is positioned at the top in mineral deposit, and iron is high, nickel is low, and silicon, magnesium are also lower, but cobalt contents should adopt hydrometallurgical processes to handle than higher.Noumeite is positioned at the bottom, mineral deposit, and the content of silicon, magnesium is than higher, and iron level is lower, and cobalt contents is also lower, but the content of nickel should adopt fire metallurgy process to handle than higher.And the ore of the transition that mediates can adopt pyrometallurgy, also can adopt hydrometallurgical processes.
At present, the conventional wet metallurgical technology of red soil nickel ore is divided into reducing roasting-ammonia soaking technology and acid leaching process.The former leaches nickel through ore being carried out carry out multistage normal pressure ammonia after prereduction is handled, and its shortcoming is that environmental disruption is big, is not suitable for handling containing the high nickel oxide ore of cobalt.
It is that leaching agent leaches the nickel in the ore that acid leaching process then generally adopts hydrochloric acid or mixing acid, realizes the separation of valuable metals such as nickel, cobalt through adding vulcanizing agent, and carries out thermal hydrolysis or high-temperature roasting to realize the regeneration of hydrochloric acid to mother liquid obtained behind the heavy nickel.But present acid leaching process also comes with some shortcomings: the ferric iron in the ore is understood the mass consumption vulcanizing agent, and is unfavorable for the enrichment of nickel in the sulfidation, cobalt; And thermal hydrolysis subsequently or high-temperature roasting energy consumption are all bigger, are unfavorable for suitability for industrialized production.For this reason, people propose before sulfuration extraction iron or reduce the methods such as leaching of iron, yet it is higher that these schemes exist cost, and the acid consumption is big, nickel, problem such as the cobalt leaching yield is not high and the technology added value is low.Therefore, exploiting economy utilization of base metal separation efficiently and regeneration of hydrochloric acid technology are significant for the exploitation of low-grade red soil nickel ore.
Summary of the invention
The objective of the invention is to: separate and utilize that difficulty and regeneration of hydrochloric acid energy consumption are big to be waited not enoughly to the base metal that exists in the classical acid soaking technology, the method for the low-grade red soil nickel ore of a kind of comprehensive treating process and realization are provided:
(1) energy consumption of reduction deironing and regeneration of hydrochloric acid;
(2) accomplish the separation of iron and the recovery of hydrochloric acid synchronously, simplify technical process;
(3) recovery of raising nickel, cobalt;
(4) base metal in the rational exploitation and utilization ore, the added value of increase technology.
The objective of the invention is to realize in the following manner.
(1) the red soil nickel ore ball milling is also crossed 50 mesh sieves, get-50 order sample ores and be used for leaching;
(2) leach elements such as nickel in the above-mentioned sample ore, cobalt, iron as leaching agent with the mixing solutions of metal chloride and hydrochloric acid, treat leach liquor and leached mud solid-liquid separation after, leach liquor is heated to 40～100 ℃, aerating oxygen or oxygenant simultaneously, oxidation filtrate;
(3) leach liquor to 140～180 after the above-mentioned oxidation of heating make chlorine ion concentration be controlled at 100～500g/L, and shift the hydrogen chloride gas that generates rapidly, and regeneration obtains hydrochloric acid; Add simultaneously constantly deionized water, iron is sunk in hydrolysis; Filtering-depositing obtains iron oxide red;
(4), obtain the sulfide precipitation and the heavy nickel mother liquor of nickel cobalt enrichment after the solid-liquid separation with the filtrating sulfide precipitation in (3).
Metal chloride and hydrochloric acid mol ratio are 1～8:1～3 in the said leaching agent, and leaching condition is: 80～110 ℃ of following agitation leachs, extraction time 0.5～4 hour.
Said oxygenant is one or more in sodiumperoxide, ydrogen peroxide 50, potassium permanganate, VAL-DROP, Youxiaolin, Potcrate, the potassium hypochlorite.
Whenever added the capacity deionized water at a distance from 2～20 minutes in the reaction of described (3) step, hydrolysis time is 0.5～24 hour.
The transfer of described hydrogen chloride gas is through vacuumizing or air is realized in the stream effect that helps of solution surface.
Described regeneration hydrochloric acid is back to leaching process, makes it recycle.
With the deionized water dissolving washing, obtain the solution and the iron oxide precipitation of magnesium chloride after filtering once more respectively behind the sedimentation and filtration in described (3) step; The washing and drying post precipitation obtains iron oxide red.
Described heavy nickel mother liquor reclaims and concentrates, and obtains chloride soln, recycles as leaching agent.
The present invention provides a kind of method of comprehensive exploitation of low-ore grade laterite nickel mine; Comprise that mineral preparation, chlorination leaching, leach liquor oxidation, regeneration of hydrochloric acid and hydrolysis sink steps such as iron, solid-liquid separation, sulfide precipitation and chloride recovery; Be characterized in: red soil nickel ore is leached with hydrochloric acid and muriate mixed solution normal pressure, and the iron in the leaching ore as much as possible is to improve the leaching yield of nickel cobalt; Aerating oxygen under certain condition (40～100 ℃, 0.5～5h) becomes ferric iron with the ferrous oxidation in the leach liquor; Cl in chloride system
-Concentration is 100～500g/L, realizes the heavy iron of regeneration of hydrochloric acid and hydrolysis under normal pressure, 140～180 ℃ the condition synchronously, impels carrying out fully of hydrolysis reaction through the quick transfer to regeneration hydrochloric acid, obtains the sub product iron oxide red; After solid-liquid separation, nickel cobalt filtrate enriched is carried out sulfide precipitation, and reclaim chloride soln, recycle after concentrating.
The principle that wherein realizes the heavy iron of regeneration of hydrochloric acid and hydrolysis synchronously is the dynamic characteristic according to common-ion effcet and hydrolysis reaction, specific as follows shown in:
The hydrolysis reaction 2FeCl of 3 valency molysite
3+ 3H
2O → Fe
2O
3+ 6HCl (1)
Its equilibrium constant Keq is
(100～450g/L), the saturation steam pressure energy of hydrogenchloride significantly improves, and helps the distillation of hydrogenchloride molecule in the chloride system of high density; Because chloride concentration is very high, and water is fewer, also helps suppressing hydrogenchloride and exist with the ionic form, thereby form more HCl molecule simultaneously, the state of this molecule also helps the evaporation of hydrogenchloride to reclaim.Along with the distillation of hydrogenchloride, the decline of HCl activity in the leach liquor, in order to keep the constant of Keq, the activity of iron(ic)chloride also will inevitably reduce, and promotes reaction to carry out to the direction of heavy iron.
The quick collection of hydrogen chloride gas can increase the saturated vapor pressure of hydrogenchloride through vacuumizing or rare gas element is realized in the stream effect that helps of solution surface, promotes the deposition fully of iron.
Chloride soln is for reclaiming the spissated heavy nickel mother liquor in back, comprise magnesium chloride, and a small amount of aluminum chloride, calcium chloride in one or more.
The muriate of regenerated hydrochloric acid and recovery returns ore and leaches operation in the process, has realized recycle.
The present invention compares with other methods of concentrating cobalt and nickel from red soil nickel ore, and its advantage fully shows in the following areas:
1) realizes regeneration of hydrochloric acid and the isolating synchronous completion of base metal at a lower temperature, not only simplified technical process, also significantly reduced production cost, avoided conventional process modes such as very big high-temperature roasting of energy consumption or thermal hydrolysis.
2) need not to use extraction agent, carry out the separation of main base metal elemental iron before the sulfide precipitation, reduced the consumption of vulcanizing agent, the difficult isolating problem of base metal element when efficiently solving sulfide precipitation has simultaneously improved the recovery of nickel cobalt.
3) different with the leaching of inhibition iron in the classical acid soaking technology, the present invention leaches into the iron in the ore in the solution as far as possible, helps the abundant leaching of nickel cobalt in the ore.
4) product of the heavy iron of hydrolysis is red stone (iron oxide red), has realized making full use of of red soil nickel ore, has increased the added value of technology.
5) adopt the muriate and the raw material of regeneration hydrochloric acid as the leaching operation, the comprehensive utilization of material in the realization system that reclaims.
In sum, the present invention is that a kind of energy consumption is low, technical process simple, nickel cobalt accumulation rate is high, the technology added value is high, the method for eco-friendly comprehensive exploitation of low-ore grade laterite nickel mine.
Description of drawings
Figure is the process flow diagram of comprehensive exploitation of low-ore grade laterite nickel mine
Embodiment
Following examples are intended to explain the present invention rather than the present invention are further limited.
Embodiment is respectively with nickel, the cobalt contents of red soil nickel ore: Ni 1.04%; Co 0.06%.
Embodiment 1
The red soil nickel ore ball milling is also crossed 50 mesh sieves, get-50 order sample ores and be used for leaching.The muriate leaching agent that adopts is the mixing solutions of magnesium chloride and hydrochloric acid, and wherein magnesium chloride and hydrochloric acid mol ratio are 1:2,90 ℃ of following agitation leachs; Time control 1 hour; Filter the back leach liquor is analyzed, confirm that the nickel leaching yield is 90.3%, the cobalt leaching yield is 84.24%.Heating leach liquor to 70 ℃, aerating oxygen, time control 30 minutes.Make the cl ions in the system remain on 100g/L through heating, continue to be heated to 140～145 ℃, whenever added the capacity deionized water, vacuumize, time control 0.5 hour, filtering-depositing at a distance from 10 minutes.Through analyzing, 45.7% iron(ic)chloride changes deposition into.Regenerated hydrochloric acid is back to leaching process, makes it recycle.In filtrating, add Na
2S reacted 1 hour, obtained the sulfide precipitation of nickel cobalt enrichment after the solid-liquid separation.Concentrated to filtrating, as the raw material that leaches.Through analyzing, from the ore to the sulfide precipitation, to accomplish, the comprehensive recovery of nickel, cobalt is: Ni 83.32%; Co 80.97%.
Embodiment 2
The red soil nickel ore ball milling is also crossed 50 mesh sieves, get-50 order sample ores and be used for leaching.The muriate leaching agent that adopts is the mixing solutions of magnesium chloride and hydrochloric acid, and wherein magnesium chloride and hydrochloric acid mol ratio are 2:1,100 ℃ of following agitation leachs; Time control 2 hours; Filter the back leach liquor is analyzed, confirm that the nickel leaching yield is 94.45%, the cobalt leaching yield is 89.73%.Heating leach liquor to 80 ℃ adds ydrogen peroxide 50, time control 2 hours.Make the cl ions in the system remain on 300g/L through heating, continue to be heated to 145～150 ℃, whenever added the capacity deionized water at a distance from 20 minutes, bubbling air helps stream, time control 1 hour, filtering-depositing.Through analyzing, 65.82% iron(ic)chloride changes deposition into, and regenerated hydrochloric acid is back to leaching process, makes it recycle.In filtrating, add Na
2S reacted 1 hour, obtained the sulfide precipitation of nickel cobalt enrichment after the solid-liquid separation.Concentrated to filtrating, as the raw material that leaches.Through analyzing, from the ore to the sulfide precipitation, to accomplish, the comprehensive recovery of nickel, cobalt is: Ni 89.78%; Co 83.12%.
Embodiment 3
The red soil nickel ore ball milling is also crossed 50 mesh sieves, get-50 order sample ores and be used for leaching.The muriate leaching agent that adopts is the mixing solutions of magnesium chloride and hydrochloric acid, and wherein magnesium chloride and hydrochloric acid mol ratio are 5:2,90 ℃ of following agitation leachs; Time control 3 hours; Filter the back leach liquor is analyzed, confirm that the nickel leaching yield is 97.64%, the cobalt leaching yield is 90.55%.Heating leach liquor to 90 ℃ adds potassium permanganate and VAL-DROP, time control 2 hours.Make the cl ions in the system remain on 350g/L through heating, continue to be heated to 155～160 ℃, whenever added the capacity deionized water at a distance from 2 minutes, bubbling air helps stream, time control 2 hours, filtering-depositing.Through analyzing, 77.2% iron(ic)chloride changes deposition into, and regenerated hydrochloric acid is back to leaching process, makes it recycle.In filtrating, add Na
2S reacted 1 hour, obtained the sulfide precipitation of nickel cobalt enrichment after the solid-liquid separation.Concentrated to filtrating, as the raw material that leaches.Through analyzing, from the ore to the sulfide precipitation, to accomplish, the comprehensive recovery of nickel, cobalt is: Ni 94.89%; Co 87.63%.
Embodiment 4
The red soil nickel ore ball milling is also crossed 50 mesh sieves, get-50 order sample ores and be used for leaching.The muriate leaching agent that adopts is the mixing solutions of magnesium chloride and hydrochloric acid, and wherein magnesium chloride and hydrochloric acid mol ratio are 3:1,90 ℃ of following agitation leachs; Time control 0.5 hour; Filter the back leach liquor is analyzed, confirm that the nickel leaching yield is 98.73%, the cobalt leaching yield is 92.49%.Heating leach liquor to 90 ℃ adds sodiumperoxide, time control 3 hours.Make the cl ions in the system remain on 400g/L through heating, continue to be heated to 175～180 ℃, whenever added the capacity deionized water at a distance from 2 minutes, bubbling air helps stream, time control 1 hour, filtering-depositing.Through analyzing, 82.2% iron(ic)chloride changes deposition into, and regenerated hydrochloric acid is back to leaching process, makes it recycle.In filtrating, add Na
2S reacted 1 hour, obtained the sulfide precipitation of nickel cobalt enrichment after the solid-liquid separation.Concentrated to filtrating, as the raw material that leaches.Through analyzing, from the ore to the sulfide precipitation, to accomplish, the comprehensive recovery of nickel, cobalt is: Ni 97.1%; Co 90.77%.
Embodiment 5
The red soil nickel ore ball milling is also crossed 50 mesh sieves, get-50 order sample ores and be used for leaching.The muriate leaching agent that adopts is the mixing solutions of magnesium chloride and hydrochloric acid, and wherein magnesium chloride and hydrochloric acid mol ratio are 8:3,100 ℃ of following agitation leachs; Time control 1 hour; Filter the back leach liquor is analyzed, confirm that the nickel leaching yield is 99.57%, the cobalt leaching yield is 93.4%.Heating leach liquor to 100 ℃ adds Youxiaolin and Potcrate, carries out oxidation, time control 5 hours.Make the cl ions in the system remain on 500g/L through heating, continue to be heated to 175～180 ℃, the reaction that is hydrolyzed whenever added the capacity deionized water at a distance from 2 minutes, and bubbling air helps stream, time control 24 hours, filtering-depositing.Through analyzing, 84.3% iron(ic)chloride changes deposition into, and regenerated hydrochloric acid is back to leaching process, makes it recycle.In filtrating, add Na
2S reacted 1 hour, obtained the sulfide precipitation of nickel cobalt enrichment after the solid-liquid separation.Concentrated to filtrating, as the raw material that leaches.Through analyzing, from the ore to the sulfide precipitation, to accomplish, the comprehensive recovery of nickel, cobalt is: Ni 98.68%; Co 92.87%.
Claims (7)
1. the method for a comprehensive exploitation of low-ore grade laterite nickel mine is characterized in that following steps:
(1) the red soil nickel ore ball milling is also crossed 50 mesh sieves, get-50 order sample ores and be used for leaching;
(2) mixing solutions with metal chloride and hydrochloric acid leaches nickel, cobalt, ferro element in the above-mentioned sample ore as leaching agent; Metal chloride and hydrochloric acid mol ratio are 1～8: 1～3 in the said leaching agent; Leaching condition is: 80～110 ℃ of following agitation leachs, extraction time 0.5～4 hour; After treating leach liquor and leached mud solid-liquid separation, leach liquor is heated to 40～100 ℃, feeds oxygenant simultaneously, oxidation filtrate;
(3) leach liquor to 140～180 of heating after the above-mentioned oxidation ℃ make chlorine ion concentration be controlled at 100～500g/L, and shift the hydrogen chloride gas that generates rapidly, and regeneration obtains hydrochloric acid; Add simultaneously constantly deionized water, iron is sunk in hydrolysis; Filtering-depositing obtains iron oxide red;
(4), obtain the sulfide precipitation and the heavy nickel mother liquor of nickel cobalt enrichment after the solid-liquid separation with the filtrating sulfide precipitation in (3).
2. the method for a kind of comprehensive exploitation of low-ore grade laterite nickel mine according to claim 1 is characterized in that said oxygenant is one or more in oxygen, sodiumperoxide, ydrogen peroxide 50, potassium permanganate, VAL-DROP, Youxiaolin, Potcrate, the potassium hypochlorite.
3. the method for a kind of comprehensive exploitation of low-ore grade laterite nickel mine according to claim 1 is characterized in that whenever adding the capacity deionized water at a distance from 2～20 minutes in the reaction of described (3) step, and hydrolysis time is 0.5～24 hour.
4. the method for a kind of comprehensive exploitation of low-ore grade laterite nickel mine according to claim 1, the transfer that it is characterized in that described hydrogen chloride gas is through vacuumizing or air is realized in the stream effect that helps of solution surface.
5. according to the method for claim 1 or 4 described a kind of comprehensive exploitation of low-ore grade laterite nickel mine, it is characterized in that described regeneration hydrochloric acid is back to leaching process, makes it recycle.
6. the method for a kind of comprehensive exploitation of low-ore grade laterite nickel mine according to claim 1 is characterized in that, with the deionized water dissolving washing, obtains the solution and the iron oxide precipitation of magnesium chloride after filtering once more respectively behind the sedimentation and filtration in described (3) step; The washing and drying post precipitation obtains iron oxide red.
7. the method for a kind of comprehensive exploitation of low-ore grade laterite nickel mine according to claim 1 is characterized in that described heavy nickel mother liquor recovery is concentrated, and obtains chloride soln, recycles as leaching agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101433828A CN101403035B (en) | 2008-10-21 | 2008-10-21 | Method for comprehensive exploitation of low-ore grade laterite nickel mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101433828A CN101403035B (en) | 2008-10-21 | 2008-10-21 | Method for comprehensive exploitation of low-ore grade laterite nickel mine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101403035A CN101403035A (en) | 2009-04-08 |
| CN101403035B true CN101403035B (en) | 2012-01-11 |
Family
ID=40537193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101433828A Active CN101403035B (en) | 2008-10-21 | 2008-10-21 | Method for comprehensive exploitation of low-ore grade laterite nickel mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101403035B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8173086B2 (en) * | 2009-07-14 | 2012-05-08 | Vale S.A. | Process of recovery of base metals from oxide ores |
| CN102485922B (en) * | 2009-10-23 | 2013-06-05 | 马猛 | Method for extracting nickel, cobalt, magnesium and iron from laterite-nickel ore under conditions of normal temperature and normal pressure and using waste residues |
| CN102560109A (en) * | 2011-12-26 | 2012-07-11 | 江西理工大学 | Method for extracting copper, nickel and cobalt intermediate products from copper and cobalt ore at low cost |
| CN103055834B (en) * | 2013-01-28 | 2014-10-29 | 长沙理工大学 | Regeneration method for spent ferric oxide desulfurizer |
| CN104120259B (en) * | 2014-07-30 | 2016-03-02 | 广西师范大学 | A kind of nickel oxide ore pickling liquor two step method for removing iron |
| CN105755283B (en) * | 2016-03-08 | 2017-09-12 | 江西理工大学 | The method of valuable metal in villaumite Selectively leaching lateritic nickel ore |
| CN106745309B (en) * | 2016-12-23 | 2018-08-07 | 天津理工大学 | A kind of method of lateritic nickel ore pickle liquor production high-quality ferric oxide red colorant |
| CN111172392A (en) * | 2020-01-20 | 2020-05-19 | 广西赛可昱新材料科技有限公司 | Environment-friendly iron removal method without impurity in laterite-nickel ore leaching solution |
| CN112226630B (en) * | 2020-09-17 | 2022-11-08 | 四川顺应动力电池材料有限公司 | Method for extracting valuable metal elements from laterite-nickel ore by hydrochloric acid leaching method and acid-base regeneration circulation |
| CN113802001B (en) * | 2021-08-13 | 2022-11-22 | 广东邦普循环科技有限公司 | Method for recovering and purifying nickel from nickel iron |
-
2008
- 2008-10-21 CN CN2008101433828A patent/CN101403035B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101403035A (en) | 2009-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101403035B (en) | Method for comprehensive exploitation of low-ore grade laterite nickel mine | |
| Dutrizac | The leaching of sulphide minerals in chloride media | |
| Shen et al. | Review of rhenium extraction and recycling technologies from primary and secondary resources | |
| Zhang et al. | Manganese metallurgy review. Part I: Leaching of ores/secondary materials and recovery of electrolytic/chemical manganese dioxide | |
| CN101575676A (en) | Method for removing iron and enriching nickel cobalt through precipitation of laterite type nickel ores | |
| Randhawa et al. | A brief overview on manganese nodules processing signifying the detail in the Indian context highlighting the international scenario | |
| EA009841B1 (en) | A process for the recovery of value metals from material containing base metal oxides | |
| US9175411B2 (en) | Gold and silver extraction technology | |
| CN102859012B (en) | The method of process nickel-bearing raw material | |
| Antuñano et al. | Hydrometallurgical processes for Waelz oxide valorisation–An overview | |
| CN102212701A (en) | Method for recovering metallic copper and zinc from copper smelting ash | |
| CN112458280A (en) | Method for extracting valuable metals by leaching low grade nickel matte with acidic etching solution | |
| AU2002317121B2 (en) | Heap bioleaching process for the extraction of zinc | |
| US7455715B2 (en) | Heap bioleaching process for the extraction of zinc | |
| CN105110300B (en) | The method that a kind of compound manganese ore of Containing Sulfur manganese extracts manganese and sulphur | |
| CN107190151B (en) | In a kind of zinc hydrometallurgy and the comprehensive recovering process of heavy scum | |
| CN113430370A (en) | Method for selectively extracting cobalt and nickel from nickel sulfide concentrate | |
| CN113430369A (en) | Comprehensive utilization method of nickel sulfide concentrate | |
| CN115747516A (en) | Method for recovering nickel, cobalt, magnesium and iron from high-magnesium-silicon laterite-nickel ore | |
| Fedoseev et al. | Theoretical foundations and technological capabilities of hydrocarbonyl process while recovering copper from technogenic wastes | |
| CN101812603A (en) | Method for improving indium grade of enriched indium slag | |
| CN107287418B (en) | Utilize alkali leaching, the method for pickling processes high-ferrum low-silicon laterite iron ore | |
| CN107354292B (en) | A method of carrying iron from high-ferrum low-silicon laterite iron ore | |
| CN102050495A (en) | Process for preparing tetrahydrate manganese chloride by leaching out rhodochrosite with waste acid | |
| CN112941335B (en) | Method for separating nonferrous metal based on wet metallurgy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |