A kind of method adopting solid-state reaction to promote chlorine removal in high-chloride zinc oxide powder

A high-chloride zinc-oxygen powder, solid-phase reaction technology, applied in the direction of improving process efficiency and the like, can solve the problems of loss of metal mass, unsatisfactory effect of dechlorination by water, etc., and achieves short reaction time, good economic benefits and application prospects. , the effect of less reagent addition
CN110172590BActive Publication Date: 2021-07-20唐山鑫联环保科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
唐山鑫联环保科技有限公司
Publication Date
2021-07-20

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Abstract

The invention relates to a method for promoting the removal of chlorine in high-chloride zinc oxide powder by adopting solid-phase reaction. The method comprises: mixing high-chloride zinc oxide powder with a solid-phase additive and then performing ball milling; drying the material obtained after ball milling Dry to obtain the zinc oxide powder product after dechlorination. The invention promotes the removal of chlorine in the high-chloride zinc oxide powder by using mechanical force to induce solid-phase reaction, and the removal efficiency of chlorine can reach more than 99%. Compared with the traditional alkaline cleaning process, it has the advantages of high dechlorination efficiency, low reaction temperature, short reaction time, less reagent addition and less rinsing times, and can effectively solve the problem of chlorine removal in high-chloride zinc oxide powder. In actual production The production cost and operation cost can be reduced, and the method has the characteristics of wide application range, and has good economic benefits and application prospects.
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Description

technical field

[0001] The invention relates to the technical field of industrial solid waste treatment and resource utilization, in particular to a method for promoting chlorine removal in high-chloride zinc oxide powder by adopting solid-phase reaction. Background technique

[0002] The residues of blast furnace iron and steel smelting form a large amount of industrial solid waste gas ash. Gas ash contains dozens of metal elements and is a valuable urban mineral resource. It needs to be refined and recycled to alleviate the tension of metal resources. coming development pressure.

[0003] At present, in the industry, these low-grade, high-impurity gas ash and coke are often reacted in a rotary kiln at high temperature to obtain a primary product mainly zinc oxide powder as a raw material for the next step of wet zinc extraction. However, during the high-temperature smelting process of the rotary kiln, the chloride ions in the gas ash form volatile chlorides with metal ele...

Claims

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