Fast leaching method for copper-cobalt alloy

An alloy and leaching technology, which is applied in the field of rapid leaching of copper-cobalt alloys, can solve the problems of difficulty in wastewater treatment, low metal direct recovery rate, and large consumption of oxidant, and achieve low comprehensive treatment costs, simple process flow, and low treatment costs Effect

Inactive Publication Date: 2019-03-26
ZHEJIANG IND & TRADE VACATIONAL COLLEGE
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrochemical dissolution method is to cast a copper-cobalt alloy into an anode plate and then pass direct current into the sulfuric acid system for electrochemical dissolution. Although the treatment cost is low, this method has the disadvantages of long dissolution time and low direct metal recovery rate, and is not conducive to continuous Chemical production
The oxidative acid dissolution method is to oxidize and dissolve the finely ground copper-cobalt alloy in a sulfuric acid system with an oxidant (chlorine gas, sodium hypochlorite, sodium chlorate, hydrogen peroxide, etc.). Although the dissolution effect is good, there are disadvantages such as large consumption of oxidant and high cost.
The micro-bubble acid dissolution method is to inject a large amount of oxygen into the copper-cobalt alloy dissolution syste

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

[0022] A kind of rapid leaching method of copper-cobalt alloy comprises the following steps:

[0023] (1) Prepare a sulfuric acid solution with a concentration of 1mol / L, and add ferric sulfate into it until the concentration of iron ions reaches 25g / L;

[0024] (2) Add copper-cobalt alloy powder with a diameter of 50 μm to the mixed solution in step (1) according to the liquid-solid ratio of 10:1 (the weight percentage of each component is: Cu 10%, Co 44%, Fe 44%, Ni 1% , the remaining amount of impurities), and stir it to make it react, the reaction temperature is controlled at 40°C, the pH value of the reaction solution is controlled at 1.0, and the stirring speed is maintained at 200r / min;

[0025] (3) Fe in the solution to be reacted 3+ When the concentration is lower than 8 g / L, stop stirring, let it stand still, and export the separated solution after standing to another container, and then pass oxygen into the exported solution, and the oxygen partial pressure of oxyg...

Embodiment 2

[0028] A kind of rapid leaching method of copper-cobalt alloy comprises the following steps:

[0029] (1) Prepare a sulfuric acid solution with a concentration of 3mol / L, and add iron sulfate to it until the iron ion concentration reaches 30g / L;

[0030] (2) Add copper-cobalt alloy powder with a diameter of 100 μm to the mixed solution in step (1) according to the liquid-solid ratio of 12:1 (the weight percentage of each component is: Cu 38%, Co 30%, Fe 30%, Ni 0.3% , impurity residue), and stir it to make it react, the reaction temperature is controlled at 60°C, the pH value of the reaction solution is controlled at 1.5, and the stirring speed is maintained at 300r / min;

[0031] (3) Fe in the solution to be reacted 3+ When the concentration is lower than 8 g / L, stop stirring, let it stand still, and export the separated solution after standing to another container, and then pass oxygen into the exported solution, and the oxygen partial pressure of oxygen is controlled at 0.1...

Embodiment 3

[0034] A kind of rapid leaching method of copper-cobalt alloy comprises the following steps:

[0035] (1) Prepare a sulfuric acid solution with a concentration of 4mol / L, and add iron sulfate to it until the iron ion concentration reaches 35g / L;

[0036] (2) Add copper-cobalt alloy powder with a diameter of 150 μm to the mixed solution in step (1) according to the liquid-solid ratio of 13:1 (the weight percentage of each component is: Cu 60%, Co 20%, Fe 10%, Ni 8.5% , the remaining amount of impurities), and stirred to make it react, the reaction temperature was controlled at 80°C, the pH value of the reaction solution was controlled at 1.2, and the stirring speed was maintained at 400r / min;

[0037] (3) Fe in the solution to be reacted 3+ When the concentration is lower than 8 g / L, stop stirring, let it stand, and export the separated solution after standing to another container, and then pass oxygen into the exported solution, and the oxygen partial pressure of oxygen is co...

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 fast leaching method for a copper-cobalt alloy. The fast leaching method for the copper-cobalt alloy comprises the following steps of (1) preparing a sulfuric acid solution with the concentration being 1 to 6mol/L, and adding ferric sulfate into the sulfuric acid solution until the ferric ion concentration reaches to 25 to 40g/L; (2) adding copper-cobalt alloy powder withthe diameter being 50 to 200mum into a mixed solution in the step (1) according to the liquid-solid ratio being 10 to 15:1, stirring and reacting; (3) when the concentration of Fe3+ in a solution tobe reacted is lower than 8g/L, stopping stirring, standing, guiding the solution separated after standing out into the other container, feeding oxygen into the guided-out solution until the concentration of Fe3+ in the solution reaches to 20 to 25g/l, re-pouring, and then continuously stirring; and (4) repeating the step (3) until the alloy is completely leached. Compared with a traditional technology, the fast leaching method for the copper-cobalt alloy provided by the invention is simple in process, fast in leaching speed, low in cost and free of pollution.

Description

technical field [0001] The invention relates to an alloy processing method, in particular to a rapid leaching method for copper-cobalt alloys. Background technique [0002] Cobalt is an important strategic non-ferrous metal, which is widely used in lithium-ion battery cathode materials and other fields. my country's cobalt resources are very scarce, and it has long been imported from countries such as Congo (Kinshasa) and Zambia, which are rich in cobalt resources. Copper-cobalt ore has been transformed into copper-cobalt alloy for export by smelting in an electric furnace, so copper-cobalt alloy has replaced cobalt ore and become an important cobalt raw material in the Chinese market. The main components of copper-cobalt alloys are cobalt, copper and iron, which mainly exist in the form of simple substances. The main technical difficulty in hydrometallurgy of copper-cobalt alloys lies in dissolution and leaching. The copper-cobalt alloy dissolution and leaching methods re...

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): C22B3/08C22B15/00C22B23/00
CPCC22B3/08C22B15/0071C22B23/043Y02P10/20
Inventor 唐星星
Owner ZHEJIANG IND & TRADE VACATIONAL COLLEGE
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