Method for extracting metal zinc powder with different purposes from zinc dross

A technology for zinc scum and metal zinc, applied in the field of metal zinc powder, can solve problems such as unrealized industrialization, and achieve the effects of protecting occupational health, saving production costs, and improving recovery rate

Active Publication Date: 2013-06-05
云南云铜锌业股份有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the wet separation test of zinc scum, the technical and economic indicators such as the recovery rate of zinc metal in the wet separation process were obtained, and the final product plan was determined in combination with the operating cost estimation, so as to provide technical support for the treatment of zinc scum scum, but industrialization has not been realized

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 extracting metal zinc powder with different purposes from zinc dross

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take 200kg of zinc scum (the main chemical composition is: Zn is 84.48%, F is 0.017%, Cl is 0.079%), the particle size range is ≤3mm, and it is naturally cooled to room temperature. The cooled zinc scum is continuously fed Slowly pour into the silo. 99-100% of the zinc scum in the silo passes through the bar screen and enters the closed linear vibrating screen. The coarse particles screened by the vibrating screen enter the ball mill. All are imported into the dust collection pipeline. After the coarse particles are firstly ground by the ball mill and screened by the grid sieve once, the part under the sieve is returned to the ball mill for the second crushing, and the part under the second sieve is returned to the ball mill for the third crushing, according to crushing----screening ----Return material for cycle operation. All the sieve parts are returned to the zinc smelting process to use the power frequency furnace for remelting and recycling. All the dust generat...

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 method for extracting metal zinc powder with different purposes from zinc dross, in particular to a method for treating zinc dross by adopting ore grinding and dust collection equipment and metallurgical equipment as well as a metallurgical process to obtain metal zinc powder with different particle sizes and different purposes, which belongs to the cross field of the ore grinding and metallurgy technology. The method comprises the following steps: vibrating and crushing the zinc dross, and crushing and screening by using a ball grinding mill; carrying out tertiary screening on collected dust and powder dust of each pipeline; and collecting the dust by using the dust collection equipment. The invention has the advantages that the powder dust is not discharged torealize environmental friendliness; and three kinds of metal zinc powder and two kinds of residues in a return zinc smelting process are obtained only by adopting a physical crushing method, so that the recovery rate of zinc is improved, and the highly-efficient separation and the zero discharge of valuable elements are realized. The invention solves the problem of large quantity of Cl ions generated in a zinc hydrometallurgy process and simultaneously realizes the effects that the whole process is closed together with products, the zinc content of the various zinc powder is more than or equal to 98 percent, and the total recovery rate of the zinc is 99.5-100 percent.

Description

Technical field: [0001] The present invention relates to a method for extracting metal zinc powders of different uses from zinc scum, specifically, adopting ore grinding, dust collection equipment, metallurgical equipment, and metallurgical process to process zinc scum to obtain metal zinc with different particle sizes and different uses The powder method belongs to the intersection field of ore grinding and metallurgy technology. Background technique: [0002] Zinc dross refers to the cathode zinc sheet produced in the zinc smelting process, which is heated and melted in the melting equipment to obtain zinc liquid. However, due to the active chemical properties of zinc, there will be some zinc during the melting process of cathode zinc. The solution is oxidized to zinc oxide. Due to the high melting point of zinc oxide, a large amount of metal zinc liquid will be wrapped during the slag removal process. In order to reduce the carryover of zinc liquid, a small amount of amm...

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): B22F9/04C22B7/04
CPCY02P10/20
Inventor 戴兴征杨建军曾鹏张利平王林张浩杰周中华李伟李振科刘建平李永祥黄孟阳
Owner 云南云铜锌业股份有限公司
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