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A method for detecting boron in α-alumina and grade discrimination of alumina products

A technology for alumina and products, which is applied in the field of detection of boron content in alumina, can solve problems such as waste of time and cost, and achieve the effect of accurate method, good reproducibility and convenient operation

Active Publication Date: 2020-10-13
HENAN CHANGXING IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no judgment method for the structure and content of boron and its compounds, which can only be used in production tests. Judging according to the use effect will cause a great waste of time and cost.

Method used

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0022] A method for detecting boron in α-alumina, comprising the following steps:

[0023] (1) Sample preparation: Take about 3000g of α-Al 2 o 3 Raw materials, after multi-stage crushing, pass through a sieve with 2mm holes, are divided into samples with a weight of about 1500g by quarter sampling method, pour the sample into a ball mill, add 1000g of zirconium balls with a diameter of 10mm, and grind for 30 minutes to form a ground sample ;

[0024] (2) Sampling: Take a grinding sample of about 1000g, mix and homogenize it, and use the quartering sampling method to divide it three times to give a weight of about 125g;

[0025] (3) Ingredients: In an environment with a temperature of 25°C and a humidity of 60%, in a 100ml beaker A, add 20.00ml of polyvinyl alcohol solution at a temperatu...

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PUM

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Abstract

The invention discloses a method used for detection of boron in alpha-aluminium oxide, and aluminium oxide product grade determination. According to the method, reaction of alpha-aluminium oxide withpolyvinyl alcohol is adopted for detection of the content of boron in alpha-aluminium oxide, and the grade of aluminium oxide products is determined based on the content of boron. The method comprisessteps of sample preparation, sampling, material preparing, gelling, pouring, weighing, calculating, and comparing; and sampling and evaluating of aluminium oxide are realized. The method is accuratein measuring, skillful in design, simple in steps, convenient in operation, and accurate in standards, and can be used for determining the quality grade of aluminium oxide based on boron content accuratly.

Description

technical field [0001] The invention belongs to the field of chemical testing, and relates to a method for detecting boron in alumina and grade discrimination of alumina products, specifically a method for detecting boron content in alumina by reacting α-alumina with polyvinyl alcohol, and using This is used to judge the grade of alumina products. Background technique [0002] α-alumina has high chemical stability, high melting point, good thermal stability, high hardness, good wear resistance, high mechanical strength, good electrical insulation, corrosion resistance, etc., and is widely used in shaping and unshaping Refractory materials, refractory castable binders, wear-resistant abrasives, high-purity refractory fibers, special ceramics, electronic ceramics and other product fields. The production process of α-alumina is: after aluminum hydroxide or alumina is added with additives and phase-inversion calcined, advanced grinding technology and process are used to make po...

Claims

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Application Information

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IPC IPC(8): G01N5/00
CPCG01N5/00
Inventor 张冬梅王霄楠李民菁邵梅珊李莉真马春玲满俊艳王双丽
Owner HENAN CHANGXING IND CO LTD
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