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A kind of technological process of producing zinc powder

A technological process and zinc powder technology, which is applied in the field of zinc powder production process, can solve problems such as insufficient productivity, large power consumption, and environmental pollution, and achieve the effects of increasing productivity, increasing production efficiency, and reducing environmental pollution

Active Publication Date: 2015-12-09
GUANGXI HUAXI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing atomization method to prepare zinc powder, such as air jet atomization, has low product recovery rate, large power consumption, and problems such as uneven particles.
At present, domestic industrial production of zinc powder is mainly based on evaporation and condensation. Generally, zinc ingots or other zinc raw materials are heated and melted in a zinc melting furnace until evaporated, and then condensed to produce zinc powder. However, the productivity of this evaporation and condensation method is Still not high enough, serious pollution to the environment

Method used

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  • A kind of technological process of producing zinc powder
  • A kind of technological process of producing zinc powder

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 , the zinc calcine and coke are mixed and introduced into the reflective drying furnace 1 for drying, the flue gas generated during the drying process is introduced into the first bag filter 3 through the induced draft fan 2, and comes out of the first bag filter The flue gas is exhausted to the atmosphere through the chimney 4, so that the pollution to the environment can be reduced; in the implementation process, the first bag filter should be cleaned in due course; at the same time, the dried and reduced mixture is introduced into the electric arc furnace 11 and sent to the Add fluxed lime to the mixture to fully melt the mixture to generate zinc vapor, and then introduce the zinc vapor into the condenser 12; during the melting process of the mixture, lime, coke, etc. do not generate gas, but still exist in solid form to form slag, During implementation, the slag should be introduced into the sedimentation tank 13, and the sedimented waste residue ca...

Embodiment 2

[0028] Such as figure 2 The difference between the second embodiment and the first embodiment is that the reflective drying furnace is replaced by an electric furnace 6, that is to say, electricity is used instead of coal to dry the mixture, so that no flue gas is discharged to the atmosphere, which can further reduce environmental pollution. Pollution; Other parts are all identical with embodiment one. Using the method of the present invention, generally consuming 6,000 tons of zinc calcined sand, 1,000 tons of coke, and 500 tons of lime per year, can produce more than 5,000 tons of 80-mesh zinc powder, with a productivity of more than 83% and less environmental pollution. In the implementation process, zinc raw materials are not limited to zinc calcine, and zinc raw materials such as zinc dross can also be used.

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Abstract

The invention relates to the production of zinc powder, in particular to a technological process for producing the zinc powder. The technological process for producing the zinc powder is characterized by comprising the steps including mixing zinc raw materials, reducing agents and leading into a drying device; adding fluxing agents into the dried mixture, then guiding into an electric-arc furnace, melting the zinc raw materials in the furnace and producing zinc steam; and inletting the zinc steam into a condenser. The technological process for producing the zinc powder adds the step of drying before the zinc raw materials are melt, adds coke when drying, restores the oxidized zinc, is not only capable of improving production efficiency of the zinc powder, but also capable of discharging water in the zinc raw materials in advance, makes preparation for full melting of the zinc raw materials and is in favor of improving production efficiency. An electric furnace can further be used for conducting drying, circulating water is adopted when slag in the electric-arc furnace is precipitated, and environment pollution is greatly reduced.

Description

technical field [0001] The invention relates to the production of zinc powder, in particular to a technological process for producing zinc powder with zinc calcined sand as raw material. Background technique [0002] Zinc powder is an important industrial raw material, which is widely used in metallurgy, chemical industry, construction, transportation, medicine, electronics and other fields. The production methods of zinc powder generally include atomization method and evaporation condensation method. The existing atomization method for preparing zinc powder, such as air jet atomization, has low product recovery rate, large power consumption, and problems such as uneven particles. At present, domestic industrial production of zinc powder is mainly based on evaporation and condensation. Generally, zinc ingots or other zinc raw materials are heated and melted in a zinc melting furnace until evaporated, and then condensed to produce zinc powder. However, the productivity of thi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/12C22B5/10C22B1/00
Inventor 陈进中熊爱臣伍祥武吴伯增何焕全韩洪涛林东东甘振英
Owner GUANGXI HUAXI GRP CO LTD