Method for refining high nickel matte

A technology of matte nickel and high nickel matte, applied in the improvement of process efficiency, photography process, instruments and other directions, can solve problems such as unfavorable environmental protection, low direct nickel yield, etc., and achieve the effect of strong adaptability

Inactive Publication Date: 2009-10-21
BEIJING GENERAL RES INST OF MINING & METALLURGY +1
View PDF0 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The anolyte purification method in the above-mentioned nickel sulfide anode electrolysis process produces a large amount of intermediate slags such as copper slag, iron slag and cobalt slag in the purification process. There is also a considerable amount of nickel in these slags, which must be reprocessed and recycled. Valuable metals, resulting in low direct nickel recovery rate, and not conducive to environmental protection

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
  • Method for refining high nickel matte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Melted and cast high nickel matte anode, the main components of the anode (%): Ni55.8, Co0.5, Cu14, Fe2.5, S20, the cathode is a nickel starting plate, placed in the diaphragm bag of the electrolytic cell, the center distance of the same pole is 200mm, the cathode Current density 215A / m 2 , Tank voltage 2.8 ~ 3.5V. Electrolyzed nickel, anolyte, anode residue and anode slime by electrolysis of high nickel matte anode, the current efficiency is 95%. Anolyte composition (g / L) Ni>60, Cu4, Co0.25, As0.01, Cl - 65,8O 4 2- 100.

[0035] The anolyte is extracted to remove copper, the extractant is L1X984N, the concentration is 10%, and the diluent is 260# kerosene. The anolyte undergoes 3-stage extraction to remove copper, the copper raffinate composition (g / L) Ni>60, Cu0.005, Co0.25, Fe0.96, Pb0.014, As0.008, the copper removal rate of the extraction section is 99.5 %, the direct nickel recovery rate is 99.5%. The extracted organic phase is subjected to two-stage washing...

Embodiment 2

[0042] Melted and cast high nickel ice anode, the main components of the anode (%): Ni62, Co1.5, Cu6, Fe1.5, S23, the cathode is nickel starting plate, placed in the diaphragm bag of the electrolytic cell, the center distance of the same pole is 190mm, the cathode current density 215A / m 2 , Tank voltage 2.8 ~ 3.5V. High nickel matte anode is electrolyzed to electrify nickel, anolyte, butt and anode slime, with a current efficiency of 95%. Anolyte composition (g / L) Ni>60, Cu1.0, Co1.5, Fe0.56, As0.01, Cl 2- 65. SO 4 2- 100.

[0043] The anolyte is extracted to remove copper, the extractant is L1X984N, the concentration is 5% (V / V), and the diluent is 260# kerosene. The anolyte undergoes 3-stage extraction to remove copper, the composition of copper raffinate (g / L) Ni>60, Cu0.005, Co0.55, Fe0.56, Pb0.014, As0.008, and the copper removal rate in the extraction section is 99.5 %, the direct nickel recovery rate is 99.5%. The extracted organic phase is subjected to two-stage...

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 method for refining high nickel matte, and in particular relates to a method for refining the high nickel matte for producing cathode nickel by adopting a hydrometallurgical method and using the high nickel matte as a raw material. The method is characterized in that the refining process comprises the following steps: directly casting the high nickel matte into a high nickel matte anode, electrolyzing the high nickel matte anode to obtain the cathode nickel; purifying an anolyte after the electrolysis and using the anolyte for back electrolysis of a catholyte; electrolyzing an anode scrap, performing grinding, leaching and filtering processes, and mixing the filtrate into the anolyte to perform purification; and performing conventional desulfurization on anode mud, and recovering noble metal. The method has the advantages of simple and short flow, thorough separation of copper, nickel and cobalt metals, high metal yield, less quantity of slag and good operating environment.

Description

technical field [0001] A high nickel matte refining method relates to a high nickel matte refining method which uses high nickel matte as a raw material and adopts a hydrometallurgical method to produce cathode nickel. technical background [0002] At present, there are many kinds of processes for producing electric nickel from high-matte nickel at home and abroad, and each manufacturer chooses the refining process according to local conditions according to different conditions such as raw material characteristics, technical foundation and market demand. In summary, there are three main methods: direct electrolysis of nickel sulfide anode, selective leaching of high nickel matte sulfuric acid and high nickel matte chlorination refining. [0003] The high matte nickel sulfuric acid selective leaching process was developed after the 1970s. At present, the representative manufacturers are Hajavalta Plant of Outokumpu Company in Finland, Fukang Smelter in Xinjiang in China, Jili...

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): C25C1/08C22B3/40C22B3/08
CPCY02P10/20
Inventor 刘大星赵磊
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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