A kind of method for preparing refined nickel sulfate from copper electrolytic solution after decoppering

A technology of decopper solution and copper electrolyte, which is applied in the field of hydrometallurgy, can solve the problems of high operating costs and large investment, and achieve the effects of reducing investment costs, good effect, and simple and direct process

Active Publication Date: 2020-12-15
CHANGSHA HASKY ENVIRONMENTAL PROTECTION TECH DEV CO LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the extraction has a good effect of removing impurities, but there are also many disadvantages, including large investment, high operating costs, and the liquid after extraction needs to be degreased, etc.

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
  • A kind of method for preparing refined nickel sulfate from copper electrolytic solution after decoppering
  • A kind of method for preparing refined nickel sulfate from copper electrolytic solution after decoppering
  • A kind of method for preparing refined nickel sulfate from copper electrolytic solution after decoppering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for preparing refined nickel sulfate from the copper electrolyte solution after decopper removal of the present invention, such as figure 1 shown, including the following steps:

[0034] The composition of the copper electrolyte after copper removal in a copper smelter is shown in Table 1.

[0035] Table 1 Composition of copper electrolyte after copper removal

[0036]

[0037] (1) Salt acid separation: After the copper electrolyte is decoppered and filtered through a 1μm filter membrane, the acid and metal ions are separated by a resin column equipped with 2.3L strong basic anion exchange resin (acid adsorption resin), so that The acid is adsorbed to obtain the deacidified nickel sulfate stock solution, and then the acid adsorption resin is washed with water, so that the acid is eluted, and the recovered acid solution is obtained, which is used to return to the copper system for acid supplementation.

[0038] Among them, the recovered acid solution contai...

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 preparing refined nickel sulfate from copper electrolyte solution after decopper removal, which comprises separating sulfuric acid and nickel sulfate from copper electrolyte solution after decopper removal, primary sulfidation, neutralization and impurity removal, and fluoride Calcium and magnesium removal, secondary vulcanization, adsorption of nickel by adsorption material and concentrated crystallization to produce refined nickel sulfate products. The method of the invention directly purifies the decoppered copper electrolyte solution, saves the cost of one-time concentrated crystallization, has high nickel yield, simple purification process, and saves the traditional extraction process, thereby greatly reducing investment and operation costs.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy, and relates to a method for preparing refined nickel sulfate, in particular to a method for preparing refined nickel sulfate from copper electrolytic solution after decoppering. Background technique [0002] In the copper electrolytic refining process, due to the enrichment of impurities such as arsenic, antimony and bismuth, it is necessary to open the copper electrolyte and separate and recover the valuable metals in it. Among them, the traditional way to open the circuit and recover nickel is: to concentrate and crystallize or freeze the copper electrolyte solution after decoppering to prepare crude nickel sulfate. If refined nickel sulfate is to be prepared, the crude nickel sulfate is dissolved and purified, and then crystallized into refined nickel sulfate. [0003] Many existing patent documents prepare crude nickel sulfate by crystallization. However, the crystallization method i...

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 Patents(China)
IPC IPC(8): C22B23/00C22B3/24C22B3/44
CPCC22B3/24C22B3/44C22B23/0453C22B23/0461Y02P10/20
Inventor 夏栋蒋晓云何劲松刘雅倩杨兴海阳春华黄科科
Owner CHANGSHA HASKY ENVIRONMENTAL PROTECTION TECH DEV CO LTD
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