Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for separating and recovering valuable metal from high-bismuth copper slag

A technology for separation and recovery of valuable metals, applied to the improvement of process efficiency, photography technology, instruments, etc., can solve the problems of increased labor intensity, low direct recovery rate, and deterioration of copper removal efficiency, and achieve convenient operation and comprehensive recovery High degree of environmental friendly effect

Inactive Publication Date: 2018-03-23
CHENZHOU CITY JINGUI SILVER IND CO LTD
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this process method does not consume auxiliary materials, it will produce a large amount of high-bismuth copper slag, and it needs to return to the coarse bismuth production process to recycle the bismuth. The grade of copper is getting higher and higher, while the main grade of bismuth is getting lower and lower, which leads to further deterioration of the copper removal efficiency in the refining process, forming a vicious circle, which not only brings about an increase in labor intensity, but also seriously reduces the direct yield of bismuth

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 separating and recovering valuable metal from high-bismuth copper slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Put the high-copper-bismuth slag into the enrichment furnace for sulfur production and reduction. The temperature is controlled at 1150°C and kept for 3 hours. Obtain crude bismuth, lead-bismuth matte, smelting slag and dust-containing flue gas. Crude bismuth is sent to the refining system for further processing to recover bismuth, and the smelting slag is returned to the lead smelting system to comprehensively recover valuable metals such as Au and Ag, and the dust-containing flue gas is sent to dust collection system processing;

[0019] (2) Crush the lead-bismuth matte in step (1) to more than 300 mesh, add acid to adjust the slurry, and then add it to a high-pressure reactor for oxidation leaching. The oxygen pressure leaching conditions are: sulfuric acid concentration 180g / L, liquid-solid ratio 10:1, temperature 180°C, oxygen pressure in the kettle 3.0MPa, stirring speed 600 r / min, reaction time 4 h;

[0020] The main composition and weight percentage of the ...

Embodiment 2

[0024] (1) Put the high-copper-bismuth slag into the enrichment furnace for sulfur production and reduction. The temperature is controlled at 1200°C and kept for 3 hours. Obtain crude bismuth, lead-bismuth matte, smelting slag and dust-containing flue gas. Crude bismuth is sent to the refining system for further processing to recover bismuth, and the smelting slag is returned to the lead smelting system to comprehensively recover valuable metals such as Au and Ag, and the dust-containing flue gas is sent to dust collection system processing;

[0025] (2) Crush the lead-bismuth matte in step (1) to more than 300 mesh, add acid to adjust the slurry, and then add it to a high-pressure reactor for oxidation leaching. The oxygen pressure leaching conditions are: sulfuric acid concentration 160g / L, liquid-solid ratio 8:1, temperature 150°C, oxygen pressure in the kettle 3.0MPa, stirring speed 600 r / min, reaction time 4 h;

[0026] The main composition and weight percentage of the a...

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 separating and recovering valuable metal from high-bismuth copper slag. The high-bismuth copper slag is subject to sulfur making smelting, and raw bismuth, lead bismuth matte, smelting slag and dust-containing smoke are produced; and the lead bismuth matte is subject to acidification size mixing and oxygen pressure leaching in sequence, solid-liquid separationis carried out after oxidizing leaching to obtain leaching liquid and leaching slag, the leaching liquid is subject to rotational flow electrolysis to obtain cathode copper, and the leaching slag returns to a slag-to-lead smelting system to be recovered. The overall process is simple, the method is environment-friendly, the flow is simple, operation is simple, the operation cost is low, and the comprehensive recovery degree is high.

Description

technical field [0001] The invention belongs to the field of nonferrous metal metallurgy, and relates to a method for separating and recovering valuable metals from high-bismuth copper slag. Background technique [0002] As a "green metal" that can be used safely, bismuth is not only used in the pharmaceutical industry, but also widely used in semiconductors, superconductors, flame retardants, pigments, cosmetics, chemical reagents, electronic ceramics and other fields. It is the future lead, antimony, cadmium, Alternatives to toxic elements such as mercury. [0003] In the bismuth refining process, copper removal is the first process of refining bismuth from coarse bismuth to refined bismuth, and the smelting method is used. First, add coarse bismuth into the smelting pot, ignite and heat up to 600-700°C, remove scum, cool down to 490-500°C, remove copper slag for the first time, and control the temperature at 370-420°C for the second time. For copper slag, the number of ...

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 Applications(China)
IPC IPC(8): C22B7/00C22B30/06C22B13/00C25C1/12
CPCC22B7/007C22B13/045C22B30/06C25C1/12Y02P10/20
Inventor 谭霖杨跃新覃小龙蒋朝金
Owner CHENZHOU CITY JINGUI SILVER IND CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com