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Method for preparing zinc oxide

A technology of zinc oxide and magnesium oxide, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of insufficient dispersion, low activity, and insufficient purity of magnesium hydroxide, and achieve good dispersion, improved activity, and high purity Effect

Inactive Publication Date: 2015-03-25
SUZHOU ZEMEI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing preparation method of zinc oxide, the purity of magnesium hydroxide prepared by it is not high enough, the dispersibility is not good enough, and the activity is not high

Method used

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Examples

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Embodiment Construction

[0009] The specific implementation of the present invention will be further described below in conjunction with the examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0010] The technical scheme of concrete implementation of the present invention is:

[0011] A method for preparing zinc oxide, comprising the steps of:

[0012] 1) Heat the zinc sulfate solution to 62°C, add 0.11g / l sodium tripolyphosphate, 0.65g / l magnesium oxide, 0.18g / l active silicon micropowder, 0.13g / l hexyldecanol, stir for 35 Minutes, add 1.7g / l of sodium carbonate, adjust the pH value to 9.1, stir to generate a mixture of coated basic zinc carbonate and sodium sulfate, and then press filter;

[0013] 2) Wash the basic zinc carbonate obtained by press filtration until there is no sulfate in the material, and then dry until the moisture is less than 2.0%;

[0014] 3)...

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PUM

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Abstract

The invention discloses a method for preparing zinc oxide. The method comprises the following steps: 1) heating a zinc sulfate solution to 62 DEG C, adding 0.11g / l sodium tripolyphosphate, 0.65g / l magnesium oxide, 0.18g / l active silicon micropowder and 0.13g / l hexyl decanol, stirring for 35 minutes, adding 1.7g / l sodium carbonate, adjusting the pH value to 9.1, stirring to generate a basic zinc carbonate and sodium sulfate-coated mixture, and then carrying out press filtration; 2) washing basic zinc carbonate obtained by press filtration until the material contains no sulfate and then drying until the moisture is less than 2.0%; and 3) calcining the dried material at 590 DEG C to obtain the zinc oxide product. By the method for preparing zinc oxide, the prepared magnesium hydroxide has relatively high purity and good dispersion and the activity of zinc oxide is also increased.

Description

technical field [0001] The present invention relates to a method for preparing zinc oxide. Background technique [0002] In the existing preparation method of zinc oxide, the purity of magnesium hydroxide prepared by it is not high enough, the dispersibility is not good enough, and the activity is not high. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing zinc oxide, the magnesium hydroxide prepared by it has relatively high purity, good dispersibility, and also improves the activity of zinc oxide. [0004] In order to achieve the above object, the technical solution of the present invention is to design a method for preparing zinc oxide, comprising the steps of: [0005] 1) Heat the zinc sulfate solution to 62°C, add 0.11g / l sodium tripolyphosphate, 0.65g / l magnesium oxide, 0.18g / l active silicon micropowder, 0.13g / l hexyldecanol, stir for 35 Minutes, add 1.7g / l of sodium carbonate, adjust the pH value to 9.1,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02
CPCC01G9/02
Inventor 莫云泽
Owner SUZHOU ZEMEI NEW MATERIAL TECH
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