Combined leaching process of cobalt nickel hydroxide and cobalt nickel sulfide

A technology of cobalt nickel sulfide and cobalt hydroxide, applied in the direction of improving process efficiency, can solve the problems of high risk, high cost, poor production environment, etc., and achieve the effects of high leaching efficiency, easy operation and realization

Inactive Publication Date: 2017-06-13
烟台金钪稀贵金属材料有限公司
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are mainly two ways to deal with primary laterite nickel ore, fire method and wet method. The wet method of laterite nickel ore treatment mainly includes (1) reduction roasting-ammonia leaching method (2) high pressure/atmospheric pressure acid leaching method, these two processes Obtain intermediate product cobalt nickel sulfide (NiS/CoS) and cobalt nickel hydroxide (Ni(OH) respectively 2 and Co(OH) 2 ), cobalt-nickel sulfide is reductive, so it is necessary to add an oxidizing agent in the wet

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A joint leaching process of cobalt-nickel hydroxide and cobalt-nickel sulfide, comprising the steps of:

[0025] 1) The raw material of cobalt-nickel sulfide is pulverized with a Raymond machine, passed through a 100-mesh sieve, and the sulfur content is 15.2wt% through analysis;

[0026] 2) Mix 200kg of cobalt-nickel hydroxide raw material with 200kg of water to slurry, add 98% concentrated sulfuric acid to the slurried reaction system, react at 70°C for 3 hours, and finally adjust the pH of the system to 0.5-1.0, Obtain the mixture of ore pulp and the hydroxide solid of trivalent cobalt and nickel after completion of the reaction, the weight of the hydroxide solid of trivalent cobalt and nickel is 86.5Kg after analysis;

[0027] 3) According to the formula, the amount of cobalt-nickel sulfide that needs to be added is 82.8kg, and the cobalt-nickel sulfide obtained in step 1) of 82.8kg is mixed with the mixture obtained in step 2), stirred, and reacted at 80° C. for 5 ...

Embodiment 2

[0030] A joint leaching process of cobalt-nickel hydroxide and cobalt-nickel sulfide, comprising the steps of:

[0031] 1) The raw material of cobalt-nickel sulfide is pulverized with a Raymond machine, passed through a 120 mesh sieve, and the sulfur content is 20.6wt% after analysis;

[0032] 2) Mix 200kg of cobalt-nickel hydroxide raw material with 200kg of water to slurry, add 98% concentrated sulfuric acid to the slurried reaction system, react at 90°C for 1 hour, and finally adjust the pH of the system to 0.5-1.0, Obtain the mixture of ore pulp and the hydroxide solid of trivalent cobalt and nickel after completion of the reaction, and the weight of the hydroxide solid of trivalent cobalt and nickel is 54.8Kg after analysis;

[0033] 3) According to the formula, the amount of cobalt-nickel sulfide that needs to be added is 38.5kg, and the cobalt-nickel sulfide obtained in step 1) of 19.25kg is mixed with the mixture obtained in step 2), stirred, and reacted at 90°C for 3 ...

Embodiment 3

[0036] A joint leaching process of cobalt-nickel hydroxide and cobalt-nickel sulfide, comprising the steps of:

[0037] 1) The raw material of cobalt-nickel sulfide is pulverized with a Raymond machine, passed through a 120 mesh sieve, and the sulfur content is 20.6wt% after analysis;

[0038] 2) Mix 200kg of cobalt-nickel hydroxide raw material with 200kg of water to slurry, add 98% concentrated sulfuric acid to the slurried reaction system, react at 90°C for 1 hour, and finally adjust the pH of the system to 0.5-1.0, Obtain the mixture of ore pulp and the hydroxide solid of trivalent cobalt and nickel after completion of the reaction, and the weight of the hydroxide solid of trivalent cobalt and nickel is 60.3Kg after analysis;

[0039] 3) According to the formula, the amount of cobalt-nickel sulfide that needs to be added is 42.4kg, and the cobalt-nickel sulfide obtained in step 1) of 84.8Kg is mixed with the mixture obtained in step 2), stirred, and reacted for 3 hours at ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a combined leaching process of cobalt nickel hydroxide and cobalt nickel sulfide. The combined leaching process of the cobalt nickel hydroxide and the cobalt nickel sulfide comprises the following steps: performing neutralization reaction on the cobalt nickel hydroxide and sulfuric acid to obtain a mixture of ore pulp and trivalent cobalt and nickel hydroxide solid; mixing cobalt nickel sulfide powder and the trivalent cobalt and nickel hydroxide solid and performing redox reaction at a temperature of 80 to 90 DEG C to finally obtain a sulfur residues and leaching liquid. The combined leaching process of the cobalt nickel hydroxide and the cobalt nickel sulfide has the beneficial effects that two ore materials are leached, an oxidizing agent and a reducing agent are not needed, the production of chlorine and sulfur dioxide gas is avoided, and considerable economic benefit and environmental benefit are achieved.

Description

technical field [0001] The invention relates to a leaching process, in particular to a combined leaching process of cobalt-nickel hydroxide and cobalt-nickel sulfide, which belongs to the field of leaching of non-ferrous metal ore. Background technique [0002] Nickel is a very important non-ferrous metal raw material. It has good mechanical strength, ductility and high chemical stability. It is widely used in the production of stainless steel and various alloys. It is an indispensable metal for the development of modern human civilization. [0003] Nickel resources on the earth are relatively rich. According to the report of the US Geological Survey, the world’s identified nickel metal output is about 62 million tons, but my country’s nickel resources are relatively poor, and a large amount of electro-nickel and nickel-containing raw materials need to be imported every year. . Laterite nickel ore is formed by weathering, leaching, alteration, and enrichment of nickel ore. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22B3/08C22B23/00
CPCC22B3/08C22B23/043Y02P10/20
Inventor 王雪桂张君涛孙杰峰
Owner 烟台金钪稀贵金属材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap