CN101285128A - Comprehensive reutilization method for laterite-nickel ore - Google Patents
Comprehensive reutilization method for laterite-nickel ore Download PDFInfo
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- CN101285128A CN101285128A CNA2008100843204A CN200810084320A CN101285128A CN 101285128 A CN101285128 A CN 101285128A CN A2008100843204 A CNA2008100843204 A CN A2008100843204A CN 200810084320 A CN200810084320 A CN 200810084320A CN 101285128 A CN101285128 A CN 101285128A
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Abstract
The invention relates to a metallurgy method for extracting nickel, cobalt and ferrum from a laterite-nickel ore. The invention discloses a comprehensive recycling method for a laterite-nickel ore, comprising the following steps of: A, processing the laterite-nickel ore by adopting the sulphidizing smelting to produce low nickel matte; B, processing directly sulphidizing smelting slag with melting state by adopting the reduction smelting for an ore smelting electric arc furnace to produce a semi-steel alloy with more than 80 percent of ferrum, then sending to a revolving furnace to smelt into qualified molten steel; or processing directly sulphidizing smelting slag with melting state by adopting the reduction smelting for the electric arc furnace to obtain the qualified molten steel; C, processing the low nickel matte by adopting the sulfation roasting-acid leaching to produce sulfuric acid and iron ore concentrate with more than 60 percent of ferrum; D, processing the leaching liquid of nickel and cobalt by adopting solvent extraction to produce a high-purity cobalt salt product. The metallurgy method has excellent effects on the aspects of process flow, resource comprehensive utilization, economic benefit and environment protection.
Description
Technical field
The present invention relates to a kind of metallurgical method that from red soil nickel ore, extracts nickel, cobalt, iron, particularly the comprehensive reutilization method of directly from the slag of molten state, producing the red soil nickel ore of half steel alloy with ore-smelting furnace reduction technique or electric arc furnace reduction technique.
Background technology
Traditional red soil nickel ore extractive technique has rotary kiln drying prereduction-electric furnace reduction melting to produce ferronickel; Sintering-blast furnace sulfiding smelting is produced low nickel matte; The nickel pig iron is produced in sintering-blast furnace retailoring; Pressurized acid leaching and reduction roasting-ammonia leaching etc.Rotary kiln drying prereduction-electric furnace reduction melting is a classical technology of handling nickel laterite, technological process is as follows: moisture about 30% nickel laterite through rotary kiln after 800～900 ℃ of following drying and dehydratings and prereduction are handled, send into ore-smelting furnace again, under about 1550～1600 ℃ high temperature the retailoring output nickeliferous＞15% ferronickel, be enriched to more than 25% through the further refining of converter again and sell, for producing stainless steel.Have characteristics such as Technological adaptability is strong, flow process is brief, nickel recovery height, shortcoming is the cobalt that can't reclaim in the nickel minerals.The blast furnace sulfiding smelting also is the technology of the processing red soil nickel ore of classics, nickel laterite is after allocating proper C aO and SiO2 into, under about 1100 ℃, sinter piece (or push agglomerating, dry naturally) into, allocate 10～20% pyrite and about 20～30% coke again into, melting under the about 1350 ℃ temperature in blast furnace, the low nickel matte product of output nickeliferous 8～15%.Sintering-blast furnace retailoring is the red soil nickel ore treatment process of developing on the basis of using for reference blast furnace iron-making process, produces nickeliferous 3～5% the nickel pig iron.The pressurized acid leaching method is handled nickel laterite, is that (with the sulfuric acid leaching, nickel, the cobalt rate of recovery are generally 90%～95%, but can not reclaim iron under 4～5MPa) at high temperature (230～260 ℃) and high pressure.Reduction roasting-ammonia leaching technology has reagent N H3 and can be recycled, and consumption is little, can comprehensive recovery nickel, advantages such as cobalt, iron, and nickel, the cobalt leaching yield is on the low side is its main drawback.
In sum,, especially produce aspect the half steel alloy, all do not carry out very deep research both at home and abroad at present in the direct electric furnace reduction melting of the slag that is molten state for the comprehensive utilization of iron in the processing of red soil nickel ore and the red soil nickel ore.
Summary of the invention
(1) technical problem that will solve
The objective of the invention is provides a kind of comprehensive utilization of resources good at the not high deficiency of comprehensive utilization of resources degree that exists in traditional red soil nickel ore treatment process, and technology is simple relatively, the comprehensive reutilization method of the red soil nickel ore that flow process is short.
(2) technical scheme
In order to achieve the above object, the present invention takes following scheme:
The comprehensive reutilization method of a kind of red soil nickel ore of the present invention has following steps:
A adopts sulfiding smelting to handle red soil nickel ore and produces low nickel matte;
B adopts sulfiding smelting slag production iron content that ore-smelting furnace retailoring directly handles molten state greater than 80% half steel alloy, delivers to converter smelting then and becomes qualified molten steel; The sulfiding smelting slag that perhaps also can adopt the method for electric arc furnace retailoring directly to handle molten state obtains qualified molten steel;
C adopts sulfurization roasting-acidleach to handle low nickel matte and produces sulfuric acid and iron content greater than 60% iron ore concentrate;
D adopts solvent extraction to handle nickel, the cobalt leach liquor is produced the high-purity cobalt product salt.
Wherein, described steps A also comprises step: red soil nickel ore is transported to the raw ore stockyard, at first send rod vibrating feed sieve, remove the above bulk of 30mm, the screen overflow material directly send blast furnace to handle, and sieve is after the pyrite of red soil nickel ore and 5～10% calcium sulfate and 10% mixes down, agglomerating through the pressing machine extruding, send in the blast furnace melting under about 1300 ℃ temperature, the low nickel matte product of output nickeliferous 8～15% after drying again together with about 20～30% coke.
Wherein, described step B also comprises step: about 1300 ℃ blast furnace sulfiding smelting slag that is molten state is directly from flowing in the ore-smelting furnace, energising is warming up to more than 1500 ℃, again with the mixture of pressurized air by spray gun pulverized coal injection and coke, iron in the slag is restored, the output iron content adds converter with the half steel alloy again greater than 80% half steel alloy, smelts into qualified molten steel.
Wherein, described step B also comprises step: adopt electric arc furnace retailoring directly to handle the sulfiding smelting slag of molten state: about 1300 ℃ blast furnace sulfiding smelting slag that is molten state is directly from flowing in the electric arc furnace, energising is warming up to more than 1500 ℃, again with the mixture of pressurized air by spray gun pulverized coal injection and coke, iron in the slag is restored, the output iron content is carried out the oxidation blowing by fire door, wall lance aerating oxygen again greater than 80% half steel alloy, obtains qualified molten steel.
Wherein, described step C also comprises step: the low nickel matte of blast furnace sulfiding smelting output adopts the way of slurry type feeding that the low nickel matte ore pulp is sprayed in the fluidizing furnace, under 550～600 ℃ maturing temperature behind fragmentation, ball milling, realize the sulfurization roasting of low nickel matte, flue gas reclaims system sulfuric acid; The calcining of fluidizing furnace output is through two-stage acid leaching, and the leached mud iron content of institute's output can be used as fine quality iron concentrate and sells more than 60%; Leach liquor can obtain being suitable for extracting the solution of requirement in lime carbonate and deironing; Neutralization removes scum and returns batching, the use of the group of pressure.
Wherein, described step C also comprises step: the leach liquor behind iron purification adopts the Cyanex272 extraction agent to carry out the selective extraction of cobalt, realize that the degree of depth of cobalt, nickel separates, the load organic phases that contains cobalt is again through hydrochloric acid or sulfuric acid back extraction, directly the high-purity cobalt salt product of output.
(3) beneficial effect
The novel process that the present invention combines based on " blast furnace sulfiding smelting " technology and " the direct retailoring of fused solution slag ore-smelting furnace or electric arc furnace " technology, adopt pyrometallurgical smelting, realize the comprehensive utilization of nickel, cobalt, iron in the red soil nickel ore, nickeliferous about 10% low nickel matte of output and iron content are greater than 80% half steel alloy product respectively.Low nickel matte is again through sulfation fluidized bed roasting-acidleach, and output iron ore concentrate, sulfuric acid and nickel cobalt leach liquor respectively, nickel cobalt leach liquor be again through purifications-extracting and separating, output cobalt salt product and be suitable for producing the nickel solution of electrolytic nickel.Therefore, compare with traditional red soil nickel ore treatment process, the present invention is in technical process, and comprehensive utilization of resources, economic benefit and environmental protection aspect all have better effect.
Description of drawings
Fig. 1 is the principle flow chart of the present invention's comprehensive reutilization nickel, cobalt, iron from red soil nickel ore.
Embodiment
Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
The comprehensive reutilization method of a kind of red soil nickel ore of the present invention, its concrete steps are:
Red soil nickel ore is transported to the raw ore stockyard, at first send rod vibrating feed sieve, removes the above bulk of 30mm.The screen overflow material directly send blast furnace to handle, and undersize material is allocated an amount of lime or gypsum, broken Jiao (or blue carbon) and pyrite into, and the liquor charging press is made the agglomerate of 100～200mm under the pressure about 200t, send blast furnace to handle after air-dry.
Greater than the screen overflow material of 30mm and the agglomerate after drying together, allocate a certain proportion of coke, lime into after, directly send into blast furnace, under about 1350 ℃, carry out sulfiding smelting.The blast furnace flue gas cools and after bagroom gathers dust through cyclone dust collection-surface cooler, emptying after the alkali lye absorption tower absorbs again.About 1350 ℃ blast furnace liquid slag flows directly into electric reduction furnace, sprays into fine coal and burnt grain with pressurized air after energising is warming up to about 1550 ℃ again, realizes the stirring reduction of liquid slag, and the direct production iron content is greater than 80% half steel alloy.Low nickel matte send fragmentation, ball-milling processing behind disk casting molding machine ingot casting.
Low nickel matte material behind the ball milling, is sent into fluidizing furnace and is carried out sulfurization roasting after dewatering, sizing mixing through dense, and the nickel in the low nickel matte, cobalt metallic sulfide are converted into vitriol, and iron rule is converted into Fe2O3.Flue gas gathers dust through the cyclone dust collection and the hot electrostatic precipitator degree of depth, and it is clean that particulate calcining contained in the flue gas is received basically.Flue-gas temperature after electricity gathers dust is about 300 ℃, after venturi scrubber washing and packing tower cooling, send the relieving haperacidity operation again.
At first carry out one section low acidleach with liquid behind the nickel electrowinning after the calcining shrend and go out, control solution terminal point pH is about 3, and the iron of about 60% nickel, cobalt and about 2% is leached.Leach liquor is in oxidation and behind deironing, barium carbonate deleading, low nickel matte copper removal and the Sodium Fluoride calcium-magnesium removing, send extraction to remove the cobalt operation, high-purity cobalt sulfate solution and the nickel sulfate solution of difference output, cobalt sulfate solution are produced high-purity cobalt oxide through high-temperature calcination again and are sold after yellow soda ash precipitates into cobaltous carbonate; Nickel sulfate solution send nickel electrodeposition Workshop Production GB 1# cathode nickel.
In order to guarantee high nickel, the cobalt rate of recovery, one section low acidleach is slagged tap and is leached through the peracid reduction, and the leaching yield of nickel, cobalt is reached respectively more than 97%, and slag is nickeliferous, cobalt is reduced to below 0.2%.High acid leaching liquor returns one section low acidleach and goes out, to consume acid wherein.
Example 1
Used red soil nickel ore is formed: Ni0.8%, Fe43%, Co0.1%, MgO3.65%, SiO27.7%, CaO2.1%, Al2O36.08%, Cr1.72%.
Blast furnace sulfiding smelting condition is: 1350 ℃ of smelting temperatures, coke ratio 25%, pyrite add-on 5%, calcium sulfate add-on 10%.
The electric furnace reduction melting condition is: 1550 ℃ of smelting temperatures, and coke ratio 6%, coal is than 8%.
The sulfurization roasting condition is: 600 ℃ of maturing temperatures, 1.1 times of theoretical air requirements, time 3h.
Leaching condition is: 95 ℃ of temperature, sulfuric acid content 80g/L, time 2h.
Test-results is: low nickel matte is nickeliferous 11.5%, contain cobalt 1.4%, iron content 58%, sulfur-bearing 23%.Half steel alloy iron content 85%, sulfur-bearing 0.6%, carbon containing 1%, siliceous 5%.
The fluidized bed roasting flue gas contains SO26.5%.
The leaching result is: nickel leaching yield 97%, cobalt leaching yield 94%, iron leaching yield 22%.
Example 2
Used red soil nickel ore is formed: Ni1%, Fe45%, Co0.1%, MgO5.42%, SiO26.9%, CaO3.2%, Al2O38.02%, Cr2.22%.
Blast furnace sulfiding smelting condition is: 1350 ℃ of smelting temperatures, coke ratio 25%, pyrite add-on 5%, calcium sulfate add-on 10%.
The electric furnace reduction melting condition is: 1550 ℃ of smelting temperatures, and coke ratio 6%, coal is than 8%.
The sulfurization roasting condition is: 580 ℃ of maturing temperatures, 1.1 times of theoretical air requirements, time 3h.
Leaching condition is: 95 ℃ of temperature, sulfuric acid content 80g/L, time 4h.
Test-results is: low nickel matte is nickeliferous 12%, contain cobalt 1.3%, iron content 56%, sulfur-bearing 22.5%.Half steel alloy iron content 83%, sulfur-bearing 0.5%, carbon containing 0.9%, siliceous 6%.
The fluidized bed roasting flue gas contains SO26.8%.
The leaching result is: nickel leaching yield 98%, cobalt leaching yield 94.5%, iron leaching yield 30%.
Example 3
Used red soil nickel ore is formed: Ni1.2%, Fe40%, Co0.08%, MgO2.36%, SiO28.7%, CaO3.2%, Al2O35.1%, Cr2.46%.
Blast furnace sulfiding smelting condition is: 1350 ℃ of smelting temperatures, coke ratio 26%, pyrite add-on 4%, calcium sulfate add-on 12%.
The electric furnace reduction melting condition is: 1550 ℃ of smelting temperatures, and coke ratio 6%, coal is than 8%.
The sulfurization roasting condition is: 560 ℃ of maturing temperatures, 1.1 times of theoretical air requirements, time 4h.
Leaching condition is: 95 ℃ of temperature, sulfuric acid content 80g/L, time 4h.
Test-results is: low nickel matte is nickeliferous 10.2%, contain cobalt 1.3%, iron content 57%, sulfur-bearing 22%.Half steel alloy iron content 83%, sulfur-bearing 0.7%, carbon containing 1.2%, siliceous 6%.
The fluidized bed roasting flue gas contains SO26.7%.
The leaching result is: nickel leaching yield 96%, cobalt leaching yield 93%, iron leaching yield 32%.
Example 4
Used red soil nickel ore is formed: Ni0.75%, Fe38%, Co0.07%, MgO3.16%, SiO27.4%, CaO2.8%, Al2O36.1%, Cr1.87%.
Blast furnace sulfiding smelting condition is: 1300 ℃ of smelting temperatures, coke ratio 28%, pyrite add-on 5%, calcium sulfate add-on 12%.
The electric furnace reduction melting condition is: 1530 ℃ of smelting temperatures, and coke ratio 6%, coal is than 8%.
The sulfurization roasting condition is: 560 ℃ of maturing temperatures, 1.1 times of theoretical air requirements, time 4h.
Leaching condition is: 95 ℃ of temperature, sulfuric acid content 80g/L, time 4h.
Test-results is: low nickel matte is nickeliferous 9.9%, contain cobalt 0.9%, iron content 58.5%, sulfur-bearing 21.6%.Half steel alloy iron content 84%, sulfur-bearing 0.65%, carbon containing 1.1%, siliceous 5.2%.
The fluidized bed roasting flue gas contains SO26.8%.
The leaching result is: nickel leaching yield 97%, cobalt leaching yield 93.5%, iron leaching yield 25%.
Example 5
Used red soil nickel ore is formed: Ni0.92%, Fe41%, Co0.1%, MgO4.88%, SiO29.5%, CaO3.95%, Al2O37.8%, Cr3.11%.
Blast furnace sulfiding smelting condition is: 1300 ℃ of smelting temperatures, coke ratio 26%, pyrite add-on 5%, calcium sulfate add-on 10%.
The electric furnace reduction melting condition is: 1550 ℃ of smelting temperatures, and coke ratio 6%, coal is than 8%.
The sulfurization roasting condition is: 560 ℃ of maturing temperatures, 1.1 times of theoretical air requirements, time 4h.
Leaching condition is: 95 ℃ of temperature, sulfuric acid content 80g/L, time 4h.
Test-results is: low nickel matte is nickeliferous 11.8%, contain cobalt 1.36%, iron content 57.6%, sulfur-bearing 23.2%.Half steel alloy iron content 81%, sulfur-bearing 0.58%, carbon containing 1.67%, siliceous 7.1%.
The fluidized bed roasting flue gas contains SO27.1%.
The leaching result is: nickel leaching yield 96.6%, cobalt leaching yield 92.5%, iron leaching yield 28%.
With following indefiniteness examples of implementation technology of the present invention is further described, helping understanding the present invention and advantage thereof, and as the qualification to protection domain of the present invention, protection scope of the present invention is determined by claims.
Claims (6)
1, a kind of comprehensive reutilization method of red soil nickel ore is characterized in that following steps are arranged:
A adopts sulfiding smelting to handle red soil nickel ore and produces low nickel matte;
B adopts sulfiding smelting slag production iron content that ore-smelting furnace retailoring directly handles molten state greater than 80% half steel alloy, delivers to converter smelting then and becomes qualified molten steel; The sulfiding smelting slag that perhaps also can adopt the method for electric arc furnace retailoring directly to handle molten state obtains qualified molten steel;
C adopts sulfurization roasting-acidleach to handle low nickel matte and produces sulfuric acid and iron content greater than 60% iron ore concentrate;
D adopts solvent extraction to handle nickel, the cobalt leach liquor is produced the high-purity cobalt product salt.
2, the comprehensive reutilization method of a kind of red soil nickel ore as claimed in claim 1, it is characterized in that described steps A also comprises step: red soil nickel ore is transported to the raw ore stockyard, at first send rod vibrating feed sieve, remove the above bulk of 30mm, the screen overflow material directly send blast furnace to handle, sieve is after down the pyrite of red soil nickel ore and 5～10% calcium sulfate and 10% mixes, agglomerating through the pressing machine extruding, send in the blast furnace together with about 20～30% coke again after drying, melting under about 1300 ℃ temperature, the low nickel matte product of output nickeliferous 8～15%.
3, the comprehensive reutilization method of a kind of red soil nickel ore as claimed in claim 1, it is characterized in that described step B also comprises step: about 1300 ℃ blast furnace sulfiding smelting slag that is molten state is directly from flowing in the ore-smelting furnace, energising is warming up to more than 1500 ℃, again with the mixture of pressurized air by spray gun pulverized coal injection and coke, iron in the slag is restored, the output iron content adds converter with the half steel alloy again greater than 80% half steel alloy, smelts into qualified molten steel.
4, the comprehensive reutilization method of a kind of red soil nickel ore as claimed in claim 1, it is characterized in that described step B also comprises step: adopt electric arc furnace retailoring directly to handle the sulfiding smelting slag of molten state: about 1300 ℃ blast furnace sulfiding smelting slag that is molten state is directly from flowing in the electric arc furnace, energising is warming up to more than 1500 ℃, again with the mixture of pressurized air by spray gun pulverized coal injection and coke, iron in the slag is restored, the output iron content is greater than 80% half steel alloy, pass through fire door again, the wall lance aerating oxygen carries out the oxidation blowing, obtains qualified molten steel.
5, the comprehensive reutilization method of red soil nickel ore as claimed in claim 1, it is characterized in that described step C also comprises step: the low nickel matte of blast furnace sulfiding smelting output is behind fragmentation, ball milling, adopt the way of slurry type feeding that the low nickel matte ore pulp is sprayed in the fluidizing furnace, under 550～600 ℃ maturing temperature, realize the sulfurization roasting of low nickel matte, flue gas reclaims system sulfuric acid; The calcining of fluidizing furnace output is through two-stage acid leaching, and the leached mud iron content of institute's output can be used as fine quality iron concentrate and sells more than 60%; Leach liquor can obtain being suitable for extracting the solution of requirement in lime carbonate and deironing; Neutralization removes scum and returns batching, the use of the group of pressure.
6, the comprehensive reutilization method of a kind of red soil nickel ore as claimed in claim 1, it is characterized in that described step C also comprises step: the leach liquor behind iron purification adopts the Cyanex272 extraction agent to carry out the selective extraction of cobalt, realize the degree of depth separation of cobalt, nickel, the load organic phases that contains cobalt is again through hydrochloric acid or sulfuric acid back extraction, directly the high-purity cobalt salt product of output.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101691635B (en) * | 2009-10-27 | 2010-12-08 | 河南永通镍业有限公司 | Alkali-acid double-cycle process for treating brown iron type nickel laterite ore |
| CN102876887A (en) * | 2012-09-28 | 2013-01-16 | 广西银亿科技矿冶有限公司 | Method for comprehensively recycling metal from laterite-nickel ore leaching agent |
| CN104404259A (en) * | 2014-11-16 | 2015-03-11 | 中南大学 | Method for recovering valuable metals by cooperatively disposing copper-nickel-cobalt smelting slag and gypsum slag |
| CN106222446A (en) * | 2016-08-25 | 2016-12-14 | 安徽丰源车业有限公司 | Alloy material supporting axle sleeve improving surface accuracy length in service life and preparation method thereof |
| CN106244895A (en) * | 2016-08-25 | 2016-12-21 | 安徽丰源车业有限公司 | High-strength and high ductility blackening process improves the automobile longitudinal girder preparation method of non-oxidizability |
| CN106282741A (en) * | 2016-08-25 | 2017-01-04 | 安徽丰源车业有限公司 | Machining accuracy height reduces automotive front axle half shaft of allowance and preparation method thereof |
| CN107475511A (en) * | 2017-07-14 | 2017-12-15 | 上海大学 | It is a kind of by low nickel matte calcification baking acidleach high efficiency extraction nickel, copper, cobalt method |
| WO2018049718A1 (en) * | 2016-09-13 | 2018-03-22 | 昆明理工大学 | Environmentally-friendly high-temperature gas-solid reaction blast furnace with high efficiency and low energy consumption, and production technique therefor |
| WO2018188537A1 (en) * | 2017-04-10 | 2018-10-18 | 中南大学 | Method for comprehensively recycling copper-nickel sulfide ore and system thereof |
| CN112080636A (en) * | 2020-08-17 | 2020-12-15 | 广东邦普循环科技有限公司 | Method for producing battery-grade nickel sulfate salt by using laterite-nickel ore |
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| CN101691635B (en) * | 2009-10-27 | 2010-12-08 | 河南永通镍业有限公司 | Alkali-acid double-cycle process for treating brown iron type nickel laterite ore |
| CN102876887A (en) * | 2012-09-28 | 2013-01-16 | 广西银亿科技矿冶有限公司 | Method for comprehensively recycling metal from laterite-nickel ore leaching agent |
| CN104404259A (en) * | 2014-11-16 | 2015-03-11 | 中南大学 | Method for recovering valuable metals by cooperatively disposing copper-nickel-cobalt smelting slag and gypsum slag |
| CN104404259B (en) * | 2014-11-16 | 2017-01-04 | 中南大学 | The method that Cu, Ni and Co metallurgical slag reclaims valuable metal with gypsum tailings cooperative disposal |
| CN106222446A (en) * | 2016-08-25 | 2016-12-14 | 安徽丰源车业有限公司 | Alloy material supporting axle sleeve improving surface accuracy length in service life and preparation method thereof |
| CN106244895A (en) * | 2016-08-25 | 2016-12-21 | 安徽丰源车业有限公司 | High-strength and high ductility blackening process improves the automobile longitudinal girder preparation method of non-oxidizability |
| CN106282741A (en) * | 2016-08-25 | 2017-01-04 | 安徽丰源车业有限公司 | Machining accuracy height reduces automotive front axle half shaft of allowance and preparation method thereof |
| WO2018049718A1 (en) * | 2016-09-13 | 2018-03-22 | 昆明理工大学 | Environmentally-friendly high-temperature gas-solid reaction blast furnace with high efficiency and low energy consumption, and production technique therefor |
| WO2018188537A1 (en) * | 2017-04-10 | 2018-10-18 | 中南大学 | Method for comprehensively recycling copper-nickel sulfide ore and system thereof |
| RU2741429C1 (en) * | 2017-04-10 | 2021-01-26 | Сентрал Сауф Юниверсити | Method and system for complete reprocessing of copper-nickel sulphide ore |
| US11459636B2 (en) | 2017-04-10 | 2022-10-04 | Central South University | Method and system for comprehensive recovery and utilization of copper-nickel sulfide ore |
| CN107475511A (en) * | 2017-07-14 | 2017-12-15 | 上海大学 | It is a kind of by low nickel matte calcification baking acidleach high efficiency extraction nickel, copper, cobalt method |
| CN107475511B (en) * | 2017-07-14 | 2019-07-23 | 上海大学 | A method of by low nickel matte calcification baking-acidleach high efficiency extraction nickel, copper, cobalt |
| CN112080636A (en) * | 2020-08-17 | 2020-12-15 | 广东邦普循环科技有限公司 | Method for producing battery-grade nickel sulfate salt by using laterite-nickel ore |
| EP4190924A4 (en) * | 2020-08-17 | 2024-01-17 | Guangdong Brunp Recycling Technology Co Ltd | Method for producing battery-grade nickel sulfate by means of laterite nickel ore |
| US11952288B2 (en) | 2020-08-17 | 2024-04-09 | Guangdong Brunp Recycling Technology Co., Ltd. | Method for producing battery-grade nickel sulfate by using laterite nickel ore |
| CN115386738A (en) * | 2022-08-10 | 2022-11-25 | 广东邦普循环科技有限公司 | Method for producing high nickel matte by reduction, vulcanization and smelting of laterite-nickel ore |
| CN115386738B (en) * | 2022-08-10 | 2023-12-12 | 广东邦普循环科技有限公司 | Method for producing high nickel matte by reducing, vulcanizing and smelting laterite-nickel ore |
| WO2024031789A1 (en) * | 2022-08-10 | 2024-02-15 | 广东邦普循环科技有限公司 | Method for producing high-nickel matte by means of reduction sulfidation smelting of laterite-nickel ore |
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