Grinding medium

A technology of grinding media and spheres, which is applied in the field of grinding materials, can solve problems such as rarely used, and achieve the effect of improving grinding efficiency and increasing shear area

Inactive Publication Date: 2016-11-23
HUBEI XITIAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the directionality of the movement of the cylindrical grinding medium, it can only rotate in the mill without rolling, so the cylindrical grinding medium is rarely used in vertical mills.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0026] Making Grinding Media by Injection Molding

[0027] Use 3 moles of yttrium oxide zirconium produced by Hubei Xitian Technology Co., Ltd., and mix according to the ratio of powder: glue = 80:20. After mixing evenly, extrude it into a 5mm grinding medium mold through a screw extruder to form, and demould After dewaxing, finally calcined at 1450°C for 3 hours to obtain 5mm football-shaped zirconia balls.

Embodiment 2

[0029] Making Grinding Media by Casting

[0030] Configure the gel component according to the mass ratio of water: polyacrylamine: N'N-methylenebisacrylamide = 120:15:1, and adjust the pH to 9.6. After stirring for 30 minutes, the solid content is 50%. Add 3 moles of yttrium zirconium oxide produced by Hubei Xitian Technology Co., Ltd., grind and disperse, add 3 / 1000 ammonium persulfate and a few drops of n-butanol, discharge while ball milling, inject into a 5mm mold and heat to 60°C After heat preservation for 20 minutes, the mold was removed, dried in the shade for 48 hours, and then calcined at 1450° C. for 3 hours to obtain 5 mm football-shaped zirconia balls.

[0031] The grinding media produced by the present invention can be used in roller mills, stirring mills, planetary mills, basket mills, sand mills and other mills as grinding media for grinding dispersed materials. Compared with traditional grinding media, the grinding media of the invention has high and uniform ...

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Abstract

The invention provides a grinding medium. The grinding medium comprises a main ball body; multiple sections are arranged on the surface of the main ball body; and the sections are generally circular, and are uniformly distributed on the surface of the main ball body. The grinding medium can be manufactured by at least one material of zirconium oxide and composite zirconium thereof, aluminum oxide, zirconium silicate, silicon carbide, silicon nitride or aluminum nitride. The grinding medium takes the shape of a football, and is novel in shape. Compared with a traditional grinding medium, the grinding medium is high in strength, is uniform, largely increases the shearing area, effectively improves the grinding efficiency, is not limited by grinding equipment, and is suitable for multiple grinding devices.

Description

technical field [0001] The invention relates to a grinding medium and belongs to the technical field of grinding materials. Background technique [0002] Grinding media is widely used as a dispersion material for grinding in stirring mills, sand mills, roller mills and other grinding equipment. The material is sheared under the action of the shear force between the grinding media, so that the particle size of the material becomes smaller and dispersed. In the grinding process, the size of the shearing area between the grinding media is particularly important. The larger the shearing area, the more the number of sheared material particles per unit time, and the higher the grinding efficiency. [0003] There are two traditional grinding media, one is a sphere and the other is a cylinder. The shearing between spheres is point-to-point, and the shearing area is very small, so the grinding efficiency is low. The shear area between cylindrical grinding media is line to line, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C17/20
CPCB02C17/20
Inventor 邢长生李越强张艳兵侯令涛曹彦
Owner HUBEI XITIAN TECH CO LTD
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