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

Copper removal method of nickel solution

A technology for nickel solution and copper removal, applied in chemical instruments and methods, nickel compounds, improvement of process efficiency, etc., can solve problems such as poor copper removal effect, difficulty in slag treatment, and unbalanced water in the process system, and achieve obvious results. Economic and environmental benefits, good solid-liquid separation performance, and less copper removal slag production

Inactive Publication Date: 2019-02-12
SICHUAN NORMAL UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The decopper effect of the former is not very good, the amount of slag is large, the slag treatment is difficult, and the loss of platinum group metals is caused during the slag treatment process; the latter needs to prepare active nickel sulfide in dilute solution, and the prepared active nickel sulfide must be timely Use, otherwise it will be inactivated during storage, which will affect the decopper effect, and the requirements for process matching are very high. In addition, it may cause water imbalance in the process system

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

[0015] Example 1: Treating 5L of nickel solution (composition: Ni 2+ 55.5g / L, Cu 2+ 517mg / L, pH5.5). The reaction conditions are: temperature 25℃, time 2.5h, stirring intensity 70r / min, adding amount of thioacetamide is 4% of theoretical amount, adding amount of sodium sulfide is 135% of theoretical amount, adding copper removal slag The amount is 100% of the net slag amount produced by the same amount of solution treatment in the previous batch. The copper concentration of the solution after treatment was 0.35 mg / L.

Embodiment 2

[0016] Example 2: Treatment of 100L of nickel solution (composition: Ni 2+ 58.4g / L, Cu 2+ 498mg / L, pH4.8). The reaction conditions are: temperature 45℃, time 1.0h, stirring intensity 30r / min, adding amount of thioacetamide is 3% of theoretical amount, adding amount of sodium sulfide is 120% of theoretical amount, adding copper removal slag The amount is 150% of the net slag amount produced by the same amount of solution treatment in the previous batch. The copper concentration of the solution after treatment was 0.95 mg / L.

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 nickel solution decoppering method. The nickel solution decoppering method is characterized in that a thioacetamide and sodium sulfide composite decoppering agent is adopted, decoppering slag is added for copper removal, and the concentration of copper in the decoppered solution is smaller than 1 mg / L.

Description

Technical field [0001] The invention relates to a method for removing copper from a nickel solution. Background technique [0002] Nickel is an important raw material for the production of many industrial products. In the nickel production process, qualified electrolyte is a prerequisite to ensure the quality of nickel. The nickel solution contains copper, and copper has a significant impact on the quality of nickel. Therefore, the removal of copper from the nickel solution is an indispensable process for nickel production. At present, the main methods for removing copper from nickel solution include anode slime and (or) nickel concentrate removal, and active nickel sulfide removal. The former has poor copper removal effect, large slag volume, difficult slag treatment, and loss of platinum group metals during the slag treatment; the latter requires the preparation of active nickel sulfide in a dilute solution, and the prepared active nickel sulfide must be timely Use, otherwis...

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): C22B23/00C25C1/08C01G53/00
CPCC01G53/00C22B23/0461C25C1/08Y02P10/20
Inventor 龙炳清秦丹曹攀
Owner SICHUAN NORMAL UNIV
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