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Production equipment of high-purity superfine active zinc powder and method for preparing same

A technology for production equipment and active zinc, which is applied in the field of production equipment and the preparation of high-purity ultrafine active zinc powder, can solve the problems of zinc powder oxidation and moisture absorption, low yield of zinc powder fine-grained grade, high impurity content of zinc powder, etc., to achieve The effect of low production cost and excellent product quality

Inactive Publication Date: 2007-07-11
BGRIMM ADVANCED MATERIALS SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of with coal, coal gas, natural gas as energy source, directly use crude zinc as raw material, utilize melting furnace, tower rectifying furnace (separation tower and lead tower), inert gas circulation condenser, inert gas conveying The production equipment for the production of high-purity ultra-fine active zinc powder is established by the device (induced fan) and the closed inert gas protection sealed airflow classification device to solve the problems of insufficient refining capacity of the horizontal zinc powder furnace and ordinary condensation classification system commonly used at present. The disadvantages lead to problems such as high impurity content of zinc powder, low yield of fine-grained zinc powder, low content of metal zinc, and zinc powder oxidation and moisture absorption during processing.

Method used

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  • Production equipment of high-purity superfine active zinc powder and method for preparing same

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Experimental program
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Effect test

Embodiment 1

[0041]See Figure 1. Use crude zinc to produce high-purity ultra-fine active zinc powder. Put the zinc ingot into the melting furnace 1, melt it into zinc liquid at a temperature of 600-650°C and introduce it into the melting furnace 2, and separate part of the lead and iron after smelting at a temperature of 460-550°C for 60-80 hours After removing impurities, put the preliminary purified crude zinc liquid into the holding furnace 3 at 600-650°C for heat preservation. Through the feeder 4, the zinc liquid in the holding furnace 3 is quantitatively added to the cadmium tower 6 through the zinc liquid conduit 5 to distill and remove cadmium. The cadmium condenser 9 is condensed into crude cadmium. The temperature of each part of the cadmium tower is as follows: the temperature during combustion is 1000-1300°C, the temperature of the split chamber is 800-900°C, the temperature of the cadmium condenser is 600-800°C, and the temperature of the cadmium-free zinc storage tank is 60...

Embodiment 2

[0044] See Figure 1. High-purity ultra-fine active zinc powder is produced by a mixture containing impurities such as lead and iron and a small amount of zinc. The mixture liquid containing impurities such as lead and iron and a small part of zinc is directly added to the lead tower holding furnace 10 at 600-650° C. for heat preservation. The zinc liquid in the lead tower holding furnace 10 is quantitatively added to the lead tower 13 through the feeder 11 through the cadmium-free zinc liquid conduit 12 (temperature 650-1300°C) to distill and remove high-boiling impurities such as lead and iron, and the pure zinc vapor passes through the zinc The steam air duct 14 enters the zinc powder condenser 15 to condense into zinc powder, and the mixture liquid containing impurities such as lead and iron and a small part of zinc flows into the zinc storage tank 16 at the lower part of the lead tower. The temperature of each part of the lead tower is as follows: the temperature during c...

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Abstract

The invention relates to a device used to produce high-purity ultra-fine active zinc powder and relative production, wherein via the element weights, in the fusion process, separating some foreign elements as lead and iron with high weight, from the zinc; in the distillation, via the boiling point difference of elements, from low temperature to high temperature, removing cadmium with low boiling point and lead iron with high boiling point, to obtain high-purity zinc steam; via quick condensation theory, condensing the zinc steam into micro particles to obtain the zinc powder; since different diameter zinc powder will bear different forces in eddy flow, controlling the parameters of classifier, to obtain 2-120 mum product, to classify the zinc powder.

Description

technical field [0001] The invention belongs to the field of nonferrous metallurgy industry, and in particular relates to production equipment for high-purity ultrafine active zinc powder and a preparation method for high-purity ultrafine active zinc powder. Background technique [0002] The production methods of zinc powder are mainly airflow atomization method and evaporation condensation method. The airflow atomization method is mainly used to produce coarse zinc powder larger than 45μm, and the evaporation condensation method is mainly used to produce ordinary zinc powder with an average particle size of less than 45μm and an average particle size of 1 ~6μm ultrafine zinc powder. The traditional evaporation and condensation method uses a horizontal zinc powder furnace to produce zinc vapor, and uses an ordinary condenser to condense the zinc vapor into zinc powder. Since the horizontal zinc powder furnace can only produce zinc vapor and does not have the function of ref...

Claims

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Application Information

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IPC IPC(8): B22F9/12
Inventor 刘葵刘继军杨跃平
Owner BGRIMM ADVANCED MATERIALS SCI & TECH
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