Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Process for refining battery-grade nickel sulfate from crude nickel sulfate

A process method, nickel sulfate technology, applied in the direction of nickel sulfate, etc., can solve the problems of increasing impurity elements in copper electrolyte, unfavorable copper electrolytic refining, etc., and achieve the effect of increasing filtration performance

Pending Publication Date: 2020-05-19
DONGYING FANGYUAN NONFERROUS METALS +2
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Copper concentrate contains a small amount of nickel, which enters the copper anode plate after copper pyro-smelting, and enters the copper electrolyte after copper electrolytic refining, which leads to the increase of impurity elements in the copper electrolyte, which is not conducive to the electrolytic refining of copper

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process for refining battery-grade nickel sulfate from crude nickel sulfate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] 1. 300KG crude nickel sulfate, using crude nickel sulfate purification process, to obtain refined nickel sulfate that meets the Class II standard of GB26524-2011, the direct recovery rate of nickel is 90-95%, attached table 1 and 2.

[0033] 2. 500KG crude nickel sulfate, using the crude nickel sulfate purification process, to obtain refined nickel sulfate that meets the II standard of GB / T 26524-2011, and the direct recovery rate of nickel is 90-95%, attached table 1 and 2.

[0034] 3. 1000KG crude nickel sulfate, using the crude nickel sulfate purification process, to obtain refined nickel sulfate that meets the II standard of GB / T 26524-2011, and the direct recovery rate of nickel is 90-95%, attached table 1 and 2.

[0035] Table 1 Composition of crude nickel sulfate

[0036] element Ni co Cu Fe Zn Ca Mg mn Pb Cd Content1 (wt%) 13.87 0.25 0.05 1.95 2.62 0.13 1.21 ＜0.01 ＜0.01 ＜0.01 Content 2 (wt%) 16.61 0.26 0.83 2...

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 provides a process for refining battery-grade nickel sulfate from crude nickel sulfate. The process comprises the following steps: dissolving crude nickel sulfate with high-temperature water according to a certain ratio, carrying out solid-liquid separation to remove a part of calcium and magnesium impurities in crude nickel sulfate in a precipitation form, adjusting the pH value ofa solution obtained after water dissolution to a proper value by using calcium hydroxide, allowing iron to form an iron hydroxide precipitate and allowing calcium to form a calcium sulfate precipitate; according to different precipitation coefficients of sulfides of arsenic, copper, zinc and nickel, adding a certain amount of sodium hydrosulfide to enable copper sulfide, arsenic sulfide and zinc sulfide precipitates to be formed in the solution so as to remove impurity elements including copper, arsenic and zinc; adding sodium fluoride with a certain excess coefficient into a sulfurized solution to form calcium fluoride and magnesium fluoride precipitates and a fluorinated solution; adding sodium carbonate into the fluorinated solution to adjust a pH value, thereby forming a nickel carbonate precipitate and wastewater; adding dilute sulfuric acid with a certain concentration into nickel carbonate to partially dissolve the nickel carbonate so as to form a pure nickel sulfate solution and undissolved nickel carbonate, wherein the nickel sulfate solution is neutral, the undissolved nickel carbonate returns to a dissolving procedure, and subjecting the nickel sulfate solution to high-temperature evaporation crystallization to obtain battery-grade nickel sulfate meeting national standards in China.

Description

Technical field [0001] The invention relates to the recovery of crude nickel sulfate, specifically a process for refining battery-grade nickel sulfate from crude nickel sulfate, and belongs to the field of hydrometallurgy. Background technique [0002] Nickel sulfate is widely used in fields such as metal coloring, electroplating, catalyst preparation and ceramic industry. With the continuous advancement of science and technology, clean and efficient nickel-hydrogen batteries have developed rapidly, and the demand for its main raw material nickel sulfate has increased, resulting in a long-term nickel sulfate market. Tightening. [0003] Copper concentrate contains a small amount of nickel, which enters the copper anode plate through the pyrochemical smelting of copper, and enters the copper electrolyte through electrolytic refining of copper, resulting in an increase in impurity elements in the copper electrolyte, which is not conducive to the electrolytic refining of copper...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/10
CPCC01G53/10
Inventor 崔志祥王海滨王智张建凯雒庆堂栾俊超高中学张玉崔文昭
Owner DONGYING FANGYUAN NONFERROUS METALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com