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A kind of ceramic grinding body and preparation method thereof

A grinding body and ceramic technology, applied in the field of ceramic materials, can solve the problems of not meeting the requirements of dry grinding, lower grinding efficiency, and large internal porosity, and achieve large elastic modulus, high grinding efficiency, and high porosity. low effect

Active Publication Date: 2020-06-23
GUANGZHOU HIFER BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, because most of the existing ceramic grinding bodies adopt the spray granulation molding process, the internal porosity is relatively large, the structure defects are many, the strength is still low, and the impact resistance is poor. broken, resulting in a reduction in grinding efficiency, which cannot meet the requirements of dry grinding
[0006] It is not difficult to see that the existing technology still needs to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The ceramic grinding body of the present invention is prepared from the following raw materials in parts by weight: 70 parts of high alumina bauxite, 20 parts of kaolin, 8 parts of graphite powder, and 2 parts of composite low-temperature flux are mixed and ground to pass through a 80-micron square hole sieve , then add water to practice the mud (the described mud practice refers to the mud after removing the air mixed in the mud by beating), control the water content of the mud at 8%-10%, and press it into a ball by using a mechanical rigid mold high-pressure isostatic pressing Or after round forging, calcined at 1100°C-1200°C for 12 hours. Prepared ceramic grinding body with a density of 3.8g / cm 3 , the hardness reaches Mohs hardness level 9, the compressive strength is 305MPa, the wear rate is 0.0006%, and the breakage rate is 0.3%.

Embodiment 2

[0026] The ceramic grinding body is prepared from the following raw materials in parts by weight: 80 parts of high alumina bauxite, 11 parts of kaolin, 5 parts of graphite powder, and 4 parts of composite low-temperature flux are mixed, and ground to pass through a 80 micron square hole sieve, and then Add water to smelt the mud, control the moisture content of the mud at 12%-14%, press it into a ball or a round forging shape by high-pressure isostatic pressing with a mechanical steel mold, and then calcinate at a temperature of 1050°C-1150°C for 16 hours. Prepared ceramic grinding body with a density of 3.7g / cm 3 , the hardness reaches Mohs hardness level 9, the compressive strength is 308MPa, the wear rate is 0.0005%, and the breakage rate is 0.25%.

Embodiment 3

[0028] The ceramic grinding body is prepared from the following raw materials in parts by weight: 85 parts of high-alumina bauxite, 6 parts of kaolin, 3 parts of graphite powder, and 6 parts of composite low-temperature flux are ground to pass through a 80-micron square hole sieve, and then water is added to make the mud , control the moisture content of the mud at 16%-18%, use mechanical steel mold high-pressure isostatic pressing to form a ball or round forging shape, and then calcinate at 1000-1100°C for 18 hours. Prepared ceramic grinding body with a density of 3.6g / cm 3 , the hardness reaches Mohs hardness level 9, the compressive strength is 305MPa, the wear rate is 0.0005%, and the breakage rate is 0.25%.

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Abstract

The invention relates to the technical field of ceramic materials, in particular to a ceramic grinding body. The ceramic grinding body is prepared from the following raw materials in parts by weight: 70-95 parts of high-aluminum bauxite, 6-20 parts of kaolin, 2-10 parts of graphite powder and 1-6 parts of a composite low-temperature fluxing agent, wherein the composite low-temperature fluxing agent is prepared from the following components by mass percent: 25-30% of elpasolite, 15-25% of fluorite, 15-25% of magnesium fluoride and 25-35% of sodium carbonate. The invention also concretely discloses a preparation method of the ceramic grinding body. The ceramic grinding body prepared by the method is low in internal porosity, less in structure defects, good in abrasion resistance, large in elasticity modulus, high in hardness, impact-resistant, good in toughness, high in grinding efficiency and low in energy consumption, thus being suitable for a dry grinding technology.

Description

technical field [0001] The invention relates to the technical field of ceramic materials, in particular to a ceramic grinding body and a preparation method thereof. Background technique [0002] Ceramics, cement, thermal power, metallurgy, mining and other industries need to use ball mills for grinding in production. [0003] At present, in the dry grinding process, most of the ball mills are used to grind materials. The grinding body basically uses steel balls and steel forgings as the grinding body. It is very high, which is not conducive to energy saving and emission reduction. At the same time, the abrasive body of this material has poor wear resistance. Moreover, during the grinding process, the worn iron material will be mixed into the ground product, which will have a certain impact on the color of the white powder product. [0004] In the wet grinding process, there have been cases where ceramic grinding bodies are used instead of steel balls and steel forgings to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/10C04B35/626C04B35/64
CPCC04B35/10C04B35/62605C04B35/64C04B2235/3201C04B2235/349C04B2235/425C04B2235/445C04B2235/602C04B2235/77C04B2235/96
Inventor 陈新中
Owner GUANGZHOU HIFER BUILDING MATERIALS
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