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Process for preparing zinc by using zinc oxide material containing complex components like Cu, Pb, Zn, and Ag

A zinc oxide, complex technology, applied in photography technology, photography auxiliary technology, improvement of process efficiency, etc., can solve the problems of large sulfuric acid consumption and high cost, and achieve the effects of low power consumption, strong raw material adaptability and high current efficiency

Inactive Publication Date: 2015-07-29
郴州雄风环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for zinc oxide ore with high content of acid-soluble impurities Ca and Mg, the leach

Method used

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  • Process for preparing zinc by using zinc oxide material containing complex components like Cu, Pb, Zn, and Ag

Examples

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Embodiment 1

[0038] Example 1: The production status of a certain domestic factory in a certain month:

[0039] Material consumption and unit consumption table of a factory

[0040]

[0041] This embodiment is a process for producing zinc with medium and low-grade zinc oxide materials containing complex components of Cu, Pb, Zn, and Ag. 4 Cl solution is used as the leaching agent, the concentration of the ammonium chloride solution is 30-35% by weight, and under the neutral condition of 90-105° C., the middle and low-grade zinc oxide materials containing Cu, Pb, Zn, and Ag are leached, and the leaching time is 2 -4h; the leaching rate of Cu, Pb, Zn and Ag can reach more than 95%, zinc becomes a zinc ammonia complex solution, and the iron, copper, chromium, cadmium and nickel impurities contained in the solution do not need to remove iron, ore All the iron in the slag remains in the slag in the form of goethite, and other impurities such as As, Sb, and Sn also enter the slag;

[0042] ...

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Abstract

The invention relates to a process for preparing zinc by using a zinc oxide material containing complex components like Cu, Pb, Zn, and Ag. The process comprises the following steps: concentrated NH4C1 solution is used as a leach solution and is leached out under a neutral condition at 90-105 DEG C, zinc is enabled to form a zinc ammine complex solution, total ferrum in ore is remained in residue in the form of needle ironstone, other impurities like As, Sb and Sn enter the residue; cuprum, plumbum, cadmium and nickel in the leach solution are replaced by using zinc powder, impurities are removed, purification is carried out, then ammonia water is added into electrolyte, and electrolysis is carried out in a Zn-NH3-NH4C1-H2O system to obtain high-quality cathode zinc. According to the process for preparing zinc by using the zinc oxide material containing complex components like Cu, Pb, Zn, and Ag, no wastewater is discharged, the environmental protection requirements are well ensured.

Description

technical field [0001] The invention relates to zinc smelting technology, in particular to a zinc production process using zinc oxide materials containing complex components of Cu, Pb, Zn and Ag. Background technique [0002] With the development and utilization of zinc ore resources at home and abroad, high-grade zinc sulfide ore resources are increasingly exhausted, and the development and processing of complex zinc sulfide ore and zinc oxide ore or low-grade zinc oxide ore has become inevitable. For high-grade zinc oxide ore, sulfuric acid leaching method is generally used at home and abroad to obtain leachate, and then conventional methods are used to obtain electrolytic zinc and appropriate recovery of rare and precious metals. However, if the raw material contains high iron and silicon, it is easy to form silica gel during the neutralization process, which affects the filtration performance of the leachate, seriously affects production, and the cost is also high. Ther...

Claims

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Application Information

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IPC IPC(8): C25C1/16
CPCC25C1/16Y02P10/20
Inventor 雷日华谭雄玉刘小方张二军
Owner 郴州雄风环保科技有限公司