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

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...

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

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