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

Method for producing battery-level refined nickel sulfate with electrolyte

A technology of nickel sulfate and electrolyte, applied in the direction of nickel sulfate, etc., can solve the problems of waste, large gap, and low price

Inactive Publication Date: 2011-05-04
中科铜都粉体新材料股份有限公司
View PDF0 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] As can be seen from the above, the crude product nickel sulfate quality index has a large gap with the standards of Canada International Nickel Corporation (INCO), HG / T2824-1997, and due to the limitation of technical level, the nickel recovery rate is also very low (only 70%). The price is also low (about 40,000 to 50,000 yuan per ton of metal), resulting in the loss of a lot of profits and valuable metals, resulting in a lot of waste

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 Construction

[0025] The present invention utilizes electrolyte to produce the method for battery-grade refined nickel sulfate, and it is characterized in that it comprises the following steps: (1) concentrated crystallization: electrolytic solution (containing nickel ≥ 1g / L) is put into reactor after nickel-containing decoppering, Steam is heated and concentrated. When the specific gravity is greater than 1.6, it is cooled for 6 hours to carry out natural precipitation and solid-liquid separation. The lower layer of paste is crude nickel sulfate;

[0026] (2) Oxidation and iron removal: dissolve the crude nickel sulfate in water, prepare a solution containing Ni80-100g / L, and a specific gravity of 1.16-1.26, add first-class hydrogen peroxide, heat at 80-90°C, and adjust the pH to 4- 5. React for 0.5-1 hour, cool and stand for more than 5 hours, suction filter the supernatant, the secondary filtrate contains Fe≤0.0015g / L;

[0027] (3) Removal of copper, lead and zinc by vulcanization: hydro...

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 discloses a method for producing battery-level refined nickel sulfate with electrolyte. The method comprises the following steps: (1) concentrating and crystallizing: putting the nickel-containing electrolyte in which the copper is removed (nickel content is greater than or equal to 1 g / L) into a reaction kettle, steam-heating, concentrating and separating to obtain coarse nickel sulfate; (2) oxidizing to remove iron: dissolving the coarse nickel sulfate in water, and adding hydrogen peroxide; (3) vulcanizing to remove copper, lead and zinc: vulcanizing to remove copper, lead and zinc through the reaction of sodium sulfide and sulfuric acid; (4) concentrating to remove calcium and magnesium: removing calcium and magnesium by evaporation and concentration; (5) removing calcium and magnesium with sodium fluoride: under the action of mechanical stirring, adding second-grade sodium fluoride, and controlling the pH value with alkali liquid so that calcium and magnesium become fluoride precipitates to be removed; and (6) concentrating and crystallizing: concentrating the purified solution, and crystallizing to obtain the battery-level refined nickel sulfate. The product produced by the invention is an emerald granular crystal which is a square crystal, and the crystal grain diameter is greater than 2 mm and conforms to the HG / T2824-1997 standard.

Description

Technical field [0001] The invention relates to a method of nickel sulfate, in particular to a method of producing battery-grade refined nickel sulfate using electrolyte. Background technique [0002] The appearance of refined nickel sulfate is emerald green granular crystals with a tetragonal crystal form and a relative density of 2.07. The product is mainly hexahydrate. Easily soluble in alcohol and ammonia. The aqueous solution is acidic and toxic. In the electroplating industry, it is used as the main raw material for electroplating nickel, chemical nickel plating, aluminum coloring and the production of other nickel salts such as nickel carbonate, nickel hydroxide, etc. Used as mordant in printing and dyeing industry. In the pharmaceutical industry and organic synthesis, it serves as a catalyst. It is also used in the manufacture of nickel-cadmium batteries, nickel-metal hydride batteries and the production of cemented carbide, etc. The production process methods m...

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): C01G53/10
Inventor 欧阳准贾荣曹建国朱芳宝张启文
Owner 中科铜都粉体新材料股份有限公司
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