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Low-temperature sintered zirconium silicate grinding medium and preparation method thereof

A grinding medium and low-temperature sintering technology, applied in the field of grinding medium and its preparation, can solve the problems of unsuitable high-speed sand mill application, lack of toughness, low true density, etc., achieve ideal economic and social benefits, improve grinding efficiency, The effect of high compressive strength

Active Publication Date: 2014-01-08
ZHEJIANG HUMO POLISHING GRINDER MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main grinding media in the market are generally ceramic grinding media, and generally include the following types: 1. Ordinary ceramic grinding media (the main crystal phase is α-alumina, mullite and glass phase) are added with feldspar powder, liquid phase It is sintered, the grain of the product is coarse, and the true density is as low as 2.5-3.0g / cm 3 , crushing strength < 600N (Φ2mm), better wear resistance, low comprehensive cost performance
2. Alumina-based ceramic grinding media (the main crystal phase is α-alumina). This type of product is mainly used in the ceramic industry or grinding of hard mineral raw materials. The true density is ≧3.6g / cm 3 , the crushing strength is 800N (Φ2mm), but the alumina material is brittle, lacks toughness, and has poor wear resistance. It is not suitable for high-speed sand mills and can only be used in traditional slow-speed ball mills.
3. Alumina grinding medium (main crystal phase: tetragonal stabilized zirconia) has a true density of 6.0g / cm 3 , the product is used in the grinding machine of low-density ceramic grinding media, and the price is expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: A low-temperature sintered zirconium silicate grinding medium, calculated by weight, including 85 parts of zirconium silicate, 10 parts of Hengyang clay, 2 parts of calcium carbonate, 10 parts of alumina, 0.5 parts of magnesium oxide and 5 parts of zirconia. Among them, Hengyang clay, also known as Hunan Hengyang clay, is a mixture of kaolin and porcelain stone, mainly kaolin, and also contains sericite (or water muscovite) porcelain stone that has not been weathered into kaolin. The feature of high whiteness, the role of this component is not only to improve the whiteness of the product, but also to improve the plasticity and viscosity of the filler to meet the requirements of wet molding, and to form mullite after firing to improve the strength of the porcelain body. And corrosion resistance, containing a certain amount of porcelain stone, can reduce the firing temperature, form a glass body, and make the porcelain fine. Hengyang clay is a common chemical r...

Embodiment 2

[0023] Example 2: A low-temperature sintered zirconium silicate grinding medium, calculated by weight, including 75 parts of zirconium silicate, 15 parts of Hengyang clay, 3 parts of calcium carbonate, 15 parts of alumina, 0.4 parts of magnesium oxide and 10 parts of zirconia.

[0024] The preparation method of the above-mentioned low-temperature sintered zirconium silicate grinding medium specifically comprises the following steps;

[0025] a. The zirconium silicate, Hengyang mud, calcium carbonate, alumina, magnesia and zirconia were weighed in proportion and fully mixed to obtain material A;

[0026] b. Material A is subjected to high-speed stirring mill and processed to an average particle size of less than 0.5 microns to obtain material B;

[0027] c. Dry and granulate material B through a spray drying tower. The drying temperature of the drying tower is 130 degrees, and the evaporation water is 40 kg per hour. After fully drying, material C is obtained;

[0028] d. Mate...

Embodiment 3

[0031] Example 3: A low-temperature sintered zirconium silicate grinding medium, calculated by weight, including 90 parts of zirconium silicate, 10 parts of Hengyang clay, 1 part of calcium carbonate, 5 parts of alumina, 1 part of magnesium oxide and 5 parts of zirconia.

[0032] The preparation method of the above-mentioned low-temperature sintered zirconium silicate grinding medium specifically comprises the following steps;

[0033] a. The zirconium silicate, Hengyang mud, calcium carbonate, alumina, magnesia and zirconia were weighed in proportion and fully mixed to obtain material A;

[0034] b. Material A is subjected to high-speed stirring mill and processed to an average particle size of less than 0.5 microns to obtain material B;

[0035] c. Dry and granulate material B through a spray drying tower. The drying temperature of the drying tower is 130 degrees, and the evaporation water is 40 kg per hour. After fully drying, material C is obtained;

[0036] d. Material D...

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Abstract

The invention discloses a low-temperature sintered zirconium silicate grinding medium and a preparation method thereof. The low-temperature sintered zirconium silicate grinding medium comprises the following components in parts by weight: 75-90 parts of zirconium silicate, 5-15 parts of Hengyang mud, 1-3 parts of calcium carbonate, 5-15 parts of aluminum oxide, 0.1-1 part of magnesium oxide and 1-10 parts of zirconium oxide. The low-temperature sintered zirconium silicate grinding medium has the advantages of low abrasion, high true density, high hardness and high compressive strength and has rather ideal economic and social benefits.

Description

technical field [0001] The invention relates to a grinding medium and a preparation method thereof, in particular to a grinding medium for grinding superfine powder and a preparation method thereof. Background technique [0002] At present, the ultrafine powder industry is developing rapidly, and the indispensable equipment for its development is ball mill and sand mill, and grinding media must be used in these equipment. Grinding media is the key to powder materials. Its shape is generally spherical, and the quality of the grinding medium not only directly affects the production efficiency, but also has a direct impact on the product quality. At present, the main grinding media in the market are generally ceramic grinding media, and generally include the following types: 1. Ordinary ceramic grinding media (the main crystal phase is α-alumina, mullite and glass phase) are added with feldspar powder, liquid phase It is sintered, the grain of the product is coarse, and the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/16C04B35/622
Inventor 嵇兴林
Owner ZHEJIANG HUMO POLISHING GRINDER MFG
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