Technology of extracting and separating valuable metals such as Pb, In, Sb, Cu and Sn from lead smelting converter slags

A technology of lead, indium, antimony, copper, tin, and valuable metals, which is applied in the field of non-ferrous metal extraction, and can solve the problems of less recycling of tin and antimony and less consideration of recycling

Active Publication Date: 2009-09-16
SHENZHEN ZHONGJIN LINGNAN NONFEMET COMPANY
View PDF0 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, lead and zinc smelting enterprises mainly focus on the extraction and recovery of high-value indium in the treatment of this material. The main processes used are full wet method or wet extraction process after enrichment with alkali, while for other valuable metals copper, antimony, Less consideration is given to tin recycling, especially tin and antimony recycling

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
  • Technology of extracting and separating valuable metals such as Pb, In, Sb, Cu and Sn from lead smelting converter slags

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Below in conjunction with accompanying drawing and embodiment the present invention is further described:

[0012] see figure 1 , a process for extracting and separating valuable metals of lead, indium, antimony, copper, and tin from lead smelting converter slag. The raw material is crude copper that is blown in a converter to produce oxide slag containing indium, lead, antimony, copper and tin. The main metals and their contents in the raw material are respectively Is: Pb15~23%, In0.15~0.3%, Sn4.5~6.5%, Sb4.7~5.87%, Cu4.2~8.92%, first of all, the material is mixed with soda ash and anthracite, and the proportion is converter slag : soda ash: anthracite = 1000:12:8; smelting in an electric furnace at 1100°C for 2 hours to obtain an alloy with a content of: In1-3%, Pb45-60%, Sn10-20%, Sb5-15%, Cu10-20% , The direct recovery rate of indium in this process is about 90%, and that of other metals is above 90%.

[0013] Then in the reverberatory furnace at 600-650°C, add ca...

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 relates to a technology of extracting and separating valuable metals such as Pb, In, Sb, Cu and Sn from lead smelting converter slags, comprising the following steps: adding carbonaceous reducing agent in raw materials which are produced in the process of crude lead smelting and contain Pb, In, Sb, Cu and Sn; smelting the raw materials and the carbonaceous reducing agent in an electric furnace or a reverberatory at the temperature over 1000 DEG C, reducing the Pb, Cu, Sb, Sn, In and the like into metals and forming alloy, sorting out silicon and other components as slags; mixing sodium hudroxide with weight accounting for 40-60% of the alloy weight into the alloy, adding oxidizer and copper removal agent with weight accounting for 5-20% of the alloy weight, oxidizing the In, Sn, Sb and Cu for slagging and extracting the metallic lead; washing oxidizing slags to extract Sn, neutralizing the Sn by adding acid through washing water, regulating pH value to 3-4 and obtaining tin slags; obtaining stibium slags after acid leaching and separating of washing slags; obtaining copper sponge by replacement with ferrous powder by pickle liquor; extracting indium from replaced liquid and extracting organic phase by adopting TBP+octanol+karaffin oil, with extraction phase ratio of O / A equal to 1:1. The direct yield and recovery rate of metallic In, Pb, Sn and Sb are respectively over 90% and 95%.

Description

【Technical field】 [0001] The invention belongs to the technical field of extraction of nonferrous metals, and relates to a process for extracting and separating valuable metals of lead, indium, antimony, copper and tin from lead smelting converter slag. 【Background technique】 [0002] In addition to lead and zinc, lead-zinc ore also contains a small amount of non-ferrous metals such as indium, antimony, copper and tin. These metals will be enriched in the smelting slag during the smelting process. Considering resource utilization and enterprise benefits, it is necessary to The associated metals are comprehensively recovered, especially metal indium. Since there are few independent indium ores in nature, its extraction mainly depends on the comprehensive recovery in the lead-zinc smelting process. The lead-zinc smelting process can be divided into wet process and pyrotechnics. When using pyrotechnics to smelt lead and zinc, a material containing lead, indium, antimony, copper...

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): C22B7/04C22B5/10C22B13/00C22B58/00C22B30/02C22B15/00C22B25/06
CPCY02P10/20
Inventor 陈世民杨平赖复兴
Owner SHENZHEN ZHONGJIN LINGNAN NONFEMET COMPANY
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