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Ceramic grinding ball for cement ball mill, and preparation method thereof

A technology for cement balls and grinding balls, applied in the field of preparation of ceramic grinding balls for cement ball mills, can solve the problems of undisclosed preparation methods, decreased hardness of grinding balls, loose structure, etc. good bonding effect

Active Publication Date: 2016-08-17
SHANDONG TIANHUI GRINDING WEAR TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent "A Grinding Body for Corrosion-Resistant, High-Hardness, and High-Toughness Ball Mills" (application number: 201410376993.2, publication date: 2014-10-08) discloses a grinding body that also uses ceramics as raw materials, but its composition is complex. The patent does not disclose the preparation method, which is difficult to realize; at the same time, the patent contains expensive components such as rare earth ferrosilicon alloy and cubic boron nitride, and the economy is poor; in addition, although the addition of more silicon carbide improves the toughness of the grinding body to a certain extent, it leads to The decrease of the hardness of the grinding ball and the loose structure

Method used

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  • Ceramic grinding ball for cement ball mill, and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The ceramic grinding ball used in the cement ball mill contains 92% of alumina, 0.5% of ferric oxide, 1% of kaolin, 2% of silicon carbide, 1.5% of titanium dioxide, 1% of titanium carbide, and 2% of molybdenum disulfide by weight percentage. Method preparation:

[0032] (a) Batching: get all ingredients by weight percentage; configure PVA solution simultaneously, proportioning is PVA:water=8:100;

[0033] (b) Ball milling:

[0034] (b1) Primary grinding: Add the ingredients calculated in step (a) to the primary grinding equipment, and add ball stones and water (the primary grinding balls can be Φ30-Φ50mm 92-high alumina isostatic balls, the same below) , the ratio is material: ball: water=1:2.5:0.7, stop grinding to slurry fineness D90≤8 micron, cross 40 mesh sieves and go out grinding;

[0035] (b2) Fine grinding: Add the slurry obtained in step (b1) into the fine grinding equipment, and add ball stones and water (fine grinding ball stones can be 92-high alumina isos...

Embodiment 2

[0044] The ceramic grinding ball used in the cement ball mill contains 95% of alumina, 0.5% of ferric oxide, 0.8% of kaolin, 0.6% of silicon carbide, 2% of titanium dioxide, 0.8% of titanium carbide, and 0.3% of molybdenum disulfide by weight percentage. Method preparation:

[0045] (a) Batching: get all ingredients by weight percentage; configure PVA solution simultaneously, proportioning is PVA:water=7:100;

[0046] (b) Ball milling:

[0047] (b1) Primary grinding: Add the ingredients calculated in step (a) to the primary grinding equipment, and add ball stones and water in a ratio of material: ball: water = 1:2.5:0.75, until the slurry fineness D90≤8 Micron stop grinding, pass through a 40-mesh sieve for grinding;

[0048] (b2) Fine grinding: Add the slurry obtained in step (b1) to the fine grinding equipment, and add ball stones and water in a ratio of material: ball: water = 1:3:0.75, until the fineness of the slurry is D50≤1.5 microns 、Stop grinding after D90≤3.2 micr...

Embodiment 3

[0057] The ceramic grinding ball used in the cement ball mill contains 92% of alumina, 2% of ferric oxide, 3% of kaolin, 0.2% of silicon carbide, 1.5% of titanium dioxide, 0.8% of titanium carbide, and 0.5% of molybdenum disulfide by weight percentage. Method preparation:

[0058] (a) Batching: get all ingredients by weight percentage; configure PVA solution simultaneously, proportioning is PVA:water=10:100;

[0059] (b) Ball milling:

[0060] (b1) Primary grinding: Add the ingredients calculated in step (a) to the primary grinding equipment, and add ball stones and water in a ratio of material: ball: water = 1:2.5:0.72, until the slurry fineness D90≤8 Micron stop grinding, pass through a 40-mesh sieve for grinding;

[0061] (b2) fine grinding: add the slurry obtained in step (b1) into the fine grinding equipment, and add ball stones and water in a ratio of material: ball: water = 1: 2.5: 0.75, until the fineness of the slurry is D50≤1.5 microns 、Stop grinding after D90≤3.2...

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Abstract

The invention discloses a ceramic grinding ball for a cement ball mill, and a preparation method thereof. The ceramic grinding ball for the cement ball mill comprises the following raw materials in weight percentage: 92-95% of alumina, 0.5%-2% of ferric oxide, 0.8-3% of kaolin, 0.2-2% of silicon carbide, 1.5-2% of titanium dioxide, 0.8-1% of titanium carbide, and 0.3-2% of molybdenum disulfide. According to the technical scheme of the invention, the grinding ball is prepared through the compression moulding and high-temperature sintering process. The preparation method comprises the steps of burdening, ball-milling, spray granulation, ageing in a stock bin, compression processing, high-temperature sintering, powder removing, polishing, finished product drying, and the like. The ceramic grinding ball for the cement ball mill has the advantages of high hardness, high temperature resistance, corrosion resistance, low operation energy consumption, low material consumption, good bonding force, strong impact resistance, shock resistance and detonation resistance. The produced cement is uniform in fineness, reasonable in particle morphology and high in later strength.

Description

technical field [0001] The invention relates to the field of cement processing, in particular to a ceramic grinding ball for a cement ball mill and a preparation method thereof. Background technique [0002] The grinding ball of the cement ball mill is the grinding material medium of the ball mill equipment. Through the collision and friction between the grinding balls of the ball mill, between the grinding ball and the material, and between the grinding ball and the lining plate, the grinding effect is generated, thereby further reducing the particle size of the material. The working objects of the grinding ball are mostly cement, coal, ore, cinder, etc., especially in the cement industry, and its fineness greatly determines the performance of the product. Therefore, the hardness and wear resistance of the grinding ball during use are one of the main factors affecting the shaping effect of the ball mill. During the grinding process, the friction between the grinding ball an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622
CPCC04B35/10C04B35/622C04B2235/3232C04B2235/3272C04B2235/349C04B2235/3826C04B2235/3843C04B2235/446C04B2235/5436
Inventor 周俊华尹方勇王峰王征
Owner SHANDONG TIANHUI GRINDING WEAR TECH DEV CO LTD
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