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Ceramic grinding body for gypsum mill

A grinding body and ceramic technology, applied in the field of functional ceramics, can solve the problems of energy consumption and large loss, and achieve the effects of low wear rate, high hardness and enhanced toughness

Inactive Publication Date: 2016-06-08
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the cement mill, the ball milling process mainly plays the dual functions of crushing and grinding, while in the gypsum grinding process, since the calcined gypsum particle size is small (generally greater than 50 mesh), the grinding function plays a major role, so it has a strong impact force and high The dense metal grinding body consumes a lot of energy and loss during use, and cannot exert its more powerful effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0013] The ceramic grinding body for gypsum mill is prepared from the following raw materials in weight percentage,

[0014] Al 2 O 3 : 75%, SiO 2 : 6.1%, Cr 2 O 3 : 1.1%, TiO 2 : 1.3%, MnO: 1.6%, ZrO 2 : 1.8%, BaO: 1.9%, boromonet: 5.8%, ZnO: 2.4%, nano colloidal silica: 0.3%, co-solvent 2.7%.

[0015] The cosolvent is a combination of albite and MgO, and the ratio is 55% and 45%.

[0016] The prepared spherical gypsum grinding body has a bulk density of 3.55 g / cm3, a hardness of Mohs hardness level 9, monomer strength of 267 MPa, and abrasion of 0.05‰.

Embodiment example 2

[0018] The ceramic grinding body for gypsum mill is prepared from the following raw materials in weight percentage,

[0019] Al 2 O 3 : 77.5%, SiO 2 : 5.2%, Cr 2 O 3 :0.8%, TiO 2 : 1.1%, MnO: 1.7%, ZrO 2 :1.8%, BaO: 1.7%, boromonet: 4.8%, ZnO: 2.6%, nano colloidal silica: 0.5%, co-solvent 2.3%.

[0020] The co-solvent is AlF 3 And CaF 2 The combination of 70% and 30%.

[0021] The prepared spherical gypsum grinding body has a bulk density of 3.34 g / cm3, a hardness of Mohs hardness level 9, monomer strength of 249 MPa, and abrasion of 0.08‰.

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Abstract

The invention provides a ceramic grinding body for a gypsum mill. The ceramic grinding body for the gypsum mill is mainly prepared from 62%-83% of Al2O3, 5%-8% of SiO2, 0.5%-1.8% of Cr2O3, 1%-1.45% of TiO2, 1.51%-1.75% of MnO, 1.6%-3.4% of ZrO2, 1%-3% of BaO, 4.6%-7% of datolite, 2%-2.8% of ZnO, 0.5%-1.1% of nano-colloidal silica and 2%-6% of cosolvent. The ceramic grinding body for the gypsum mill is small in self-weight, low in wear rate and capable of substantially reducing grinding energy consumption and reducing cost, and the service life of the grinding body can be prolonged; no impurity metal iron ion is doped in the grinding process, and thus no influence is caused to the whiteness or strength of building gypsum powder; the ceramic grinding body is also capable of reducing electrostatic adsorption, and thus grinding efficiency is easily improved.

Description

Technical field [0001] The invention relates to a ceramic grinding body for gypsum grinding, which belongs to the field of functional ceramics. Background technique [0002] Therefore, low-density abrasive bodies with low energy consumption, low weight, and low wear rate are being studied by more and more scientific researchers. The Chinese invention patents with application numbers 201510077860.X, 201510077859.7, 2015100358580.8 give different preparation methods and production processes of low-density grinding bodies, which are mainly used in cement mills. In the cement mill, the ball milling process mainly plays the dual functions of smashing and grinding. In the gypsum grinding process, since the gypsum has a small particle size after calcination (generally greater than 50 mesh), the grinding function plays a major role, so it has a strong impact force. The density of the metal grinding body consumes a lot of energy and loss during use, and it cannot exert its more powerful ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10
CPCC04B35/10C04B2235/3215C04B2235/3232C04B2235/3241C04B2235/3244C04B2235/3262C04B2235/3284C04B2235/3418C04B2235/3454C04B2235/77C04B2235/96
Inventor 张国辉温海滨王慧
Owner UNIV OF JINAN
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