Alkali-process zinc powder combined smelting method

一种冶炼方法、锌粉的技术，应用在碱法锌粉联合冶炼领域，能够解决设备价格贵、作业环境恶劣、成本高等问题，达到解决设备价格贵的效果

Active Publication Date: 2021-07-16
YUNNAN YUNTONG ZINC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a method for combined smelting of zinc powder by the alkaline method, which aims to solve the problem of expensive equipment, high cost, high energy consumption and problems of zinc powder in the drying process of the existing zinc powder by the alkaline method. There is a problem of poor working environment in the process of unloading

Method used

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Embodiment 1

[0059] A smelter adopts a hydrometallurgical method and a three-stage antimony purification method to achieve deep purification.

[0060] The analysis of the new electrolytic solution is as follows, the unit is mg / L, and the unit of Zn is g / L,

[0061] Zn Fe Sb Cd co Ge pH Liquid 1 139.62 6.28 0.003 0.03 0.10 0.006 4.95

[0062] Use 3L of electrolytic new solution, add appropriate amount of caustic soda to obtain a zinc precipitation solution with pH = 7, obtain zinc precipitation residue after filtration, and put the zinc precipitation filter residue into the zinc precipitation filter residue with an initial concentration of 6mol / L according to the ratio of liquid to solid ratio of 8:1 In NaOH solution, stir at 50°C for 1 hour to obtain an alkaline immersion solution, which is directly used in alkaline electrolysis. After electrolysis for 2 hours, the obtained alkaline zinc powder is collected, filtered, and washed. 10%, 15%, and 20% w...

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PUM

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Abstract

The invention discloses an alkaline-process zinc powder combined smelting method. The method comprises a zinc deposition process, a filtering process, an alkaline leaching process, an electrolysis process, a washing process, a size mixing process and a purification process, and a stock solution before zinc deposition in the zinc deposition process is a new electrolytic solution in a zinc hydrometallurgy process. The alkaline-process zinc powder combined smelting method adopts an alkaline-process zinc powder preparation and wet-process purification combined smelting mode and simultaneously utilizes a zinc powder wet adding technology, so that the problems of high equipment price, high cost and high energy consumption in the existing alkaline-process zinc powder drying process and severe operation environment in the zinc powder transferring process are solved; and meanwhile, the problems that the grade of alkaline leaching raw materials of alkaline-process zinc powder is unstable, the impurity content is high, and a purification procedure needs to be added to remove impurities are solved. The combined smelting method has the characteristics of low use cost, good effect and excellent working environment, and meets the requirements of low carbon, greenness and environmental protection.

Description

technical field [0001] The invention relates to the field of zinc smelting, in particular to an alkaline zinc powder combined smelting method. Background technique [0002] In the production process of alkaline zinc powder, the alkaline zinc powder produced by electrolysis has high activity. After vacuum filtration and washing, put the wet alkaline zinc powder in the drying chamber of the double-cone rotary dryer to dry, and start the vacuum pump to vacuum after closing. After reaching a certain degree of vacuum, turn on the heating device and dry at a temperature lower than 60-80°C for 1-2 hours. The produced alkaline zinc powder is crushed, screened, weighed, and packaged for sale. In the traditional zinc hydrometallurgy process, metal zinc powder and electric furnace zinc powder need to be used in the purification process to remove impurities such as copper, cadmium, cobalt, antimony, etc. Alkaline zinc powder has the characteristics of large specific surface area and hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B19/20C25C5/02
CPCC22B19/24C22B19/26C25C5/02Y02P10/20
Inventor 陈国木杨全胜吴钧邱伟佳张少博姜艳刘志民杨聪刘建平刘自虎陶余彩
Owner YUNNAN YUNTONG ZINC CO LTD
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