Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for copper hydrometallurgy based on hydrogen-rich water

A technology of hydrogen-rich water and copper smelting, which is applied in the field of copper smelting and chemical industry, can solve problems such as complex and dangerous production operations, and achieve the effect of simple operation, low cost, and cost reduction

Pending Publication Date: 2020-05-19
SOUTH CHINA BOTANICAL GARDEN CHINESE ACADEMY OF SCI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that not only need to invest in autoclave equipment, but also the direct use of hydrogen makes the production operation dangerous and complicated

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 copper hydrometallurgy based on hydrogen-rich water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1. Sulfuric acid leaching-extraction-back extraction-hydrogen-rich water precipitation wet copper smelting method of copper oxide ore

[0023] Crush the copper oxide ore, control the particle size to ≤20mm, stack the ore in different layers on the stockpile field with no leakage at the bottom and a certain natural slope, and stack each layer to a predetermined height layer (1-3m). Sprinkle dilute sulfuric acid solution for leaching. Sprinkler system equipment includes infusion pumps, PVC pipelines, nozzles, etc. The leaching solution will leach the copper in the ore during the infiltration process from top to bottom. After several months of leaching, the leach solution containing copper 1-4g / L and pH 1.5-2.5 is obtained, which is collected in the liquid collection pool. Pump the copper sulfate in the liquid sump to the extraction tank, and extract it with an oxime chelating extractant that is selective to copper. The organic phase is separated, and the copper...

Embodiment 2

[0024] Embodiment 2. Hydrogen-rich water wet copper smelting of copper sulfide ore

[0025] Copper-containing leachate is obtained by leaching copper sulfide concentrate through the traditional process - sulfation or semi-sulfation roasting. Then, through the extraction and stripping process in Example 1, a copper sulfate solution was obtained. Add alkaline supersaturated hydrogen-rich water into the copper sulfate solution, let it stand for 30-60 minutes to react, precipitate or centrifuge to obtain metallic copper, and dry to obtain copper powder.

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 copper hydrometallurgy based on hydrogen-rich water. The method is mainly characterized in that metal copper can be obtained by reacting alkaline hydrogen-rich water with a copper sulfate solution obtained by a copper hydrometallurgy process at normal temperature and pressure and precipitating or centrifuging the mixture. The method is suitable for replacing a hydrogen autoclave and an electrodeposition process in the copper hydrometallurgy process. The method is simple to operate, low in cost, efficient and environmentally friendly, and has good environmental and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of copper smelting and chemical industry, and in particular relates to a method for hydrogen-rich water wet copper smelting. Background technique [0002] Copper is one of the important non-ferrous metals. Copper smelting methods are divided into two categories: fire method and wet method. The development of copper smelting technology has gone through a long process, but so far copper smelting is still dominated by fire smelting, and its output accounts for about 85% of the world's total copper output. With the advancement of hydrometallurgy technology, the proportion of copper produced by hydrometallurgy to the total output is increasing, and the production scale of hydrometallurgy copper is developing rapidly. Due to the characteristics of simple hydrometallurgy process, low cost, low energy consumption, less pollution, and the ability to process multi-variety and high-grade copper ores, it is very likel...

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): C22B15/00C22B3/44
CPCC22B3/44C22B15/0089Y02P10/20
Inventor 曾纪晴
Owner SOUTH CHINA BOTANICAL GARDEN CHINESE ACADEMY OF SCI