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

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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 close

Method used

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

Examples

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Example Embodiment

[0040] Example 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 a zinc liquid at a temperature of 600-650°C, and introduce it into the melting furnace 2. After smelting at a temperature of 460-550°C for 60-80 hours, part of the lead and iron are separated After impurities, the preliminary purified crude zinc liquid is put 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 added to the cadmium tower 6 through the zinc liquid conduit 5 to distill cadmium. The cadmium-free zinc flows into the cadmium-free zinc storage tank 7 at the lower part of the cadmium tower, and the cadmium vapor enters the crude through the air duct 8. The cadmium condenser 9 condenses into crude cadmium. The temperature of each part of the cadmium tower is as follows: the temperature during combustion is 1000~1300℃, the temperatu...

Example Embodiment

[0043] Example 2:

[0044] See Figure 1. High-purity ultra-fine active zinc powder is produced with a mixture of impurities such as lead and iron and a small part 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 added to the lead tower 13 (temperature 650~1300℃) through the feeder 11 quantitatively into the lead tower 13 (temperature 650~1300℃) to 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 be condensed 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 combus...

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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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