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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 reduced hardness of grinding balls, undisclosed preparation methods, complex components, etc., and achieves small fluctuations in cement strength, excellent color and luster, and identification. high degree of effect

Active Publication Date: 2018-03-27
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, which is economical; in addition, although the addition of more silicon carbide improves the toughness of the grinding body to a certain extent, it leads to a decrease in the hardness of the grinding ball and 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

[0033] The ceramic grinding ball for cement ball mill contains 92% of alumina, 1% of cubic boron nitride, 2% of titanium dioxide, 2% of kaolin or Shanxi Datong soil, 1.5% of calcium carbonate, 0.5% of magnesium carbonate, and 1% of molybdenum disulfide by weight percentage. %, prepared as follows:

[0034] (a) Batching: get all ingredients by weight percentage; configure PVA solution simultaneously, proportioning is PVA:water=8:100;

[0035] (b) Ball milling:

[0036] (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;

[0037] (b2) Fine grinding: Add the slurry obtained in step (b1) into the fine grinding equipment, and add ball stones and water (fine grinding ball ston...

Embodiment 2

[0046] The ceramic grinding ball used in the cement ball mill contains 95% of alumina, 0.8% of cubic boron nitride, 0.3% of titanium dioxide, 0.6% of kaolin or Shanxi Datong soil, 2% of calcium carbonate, 0.5% of magnesium carbonate, and 0.8% of molybdenum disulfide. %, prepared as follows:

[0047] (a) Batching: get all ingredients by weight percentage; configure PVA solution simultaneously, proportioning is PVA:water=7:100;

[0048] (b) Ball milling:

[0049] (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;

[0050] (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 a...

Embodiment 3

[0059] The ceramic grinding ball used in the cement ball mill contains 92% of alumina, 3% of cubic boron nitride, 0.5% of titanium dioxide, 0.2% of kaolin or Shanxi Datong soil, 1.5% of calcium carbonate, 2% of magnesium carbonate, and 0.8% of molybdenum disulfide. %, prepared as follows:

[0060] (a) Batching: get all ingredients by weight percentage; configure PVA solution simultaneously, proportioning is PVA:water=10:100;

[0061] (b) Ball milling:

[0062] (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;

[0063] (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 grind...

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Abstract

The invention discloses a ceramic milling ball for a cement ball mill and a preparation method of the ceramic milling ball. The ceramic milling ball for the cement ball mill comprises the following components in percentage by weight: 92-95% of aluminum oxide, 0.3-2% of Cubic Boron Nitride, 0.8-3% of titanium dioxide, 0.2-2% of kaolin or clay of Datong in Shanxi, 1.5-2% of calcium carbonate, 0.5-2% of magnesium carbonate and 0.8-1% of molybdenum disulfide. The ceramic milling ball is prepared by using a method of pressing molding and high-temperature sintering, and the preparation method comprises procedures of material preparation, ball-milling, spraying pelletizing, aging in a material cabin, press-molding processing, high-temperature sintering, powder elimination and polishing, finished product drying and the like. The ceramic milling ball for the cement ball mill has the advantages of high hardness, high temperature resistance, corrosion resistance, low transfer energy consumption, low material consumption, good binding force, good collision resistance, good shock resistance and detonation resistance, high cement fineness and later strength, and the like.

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 main raw materials for making cement are limestone, clay and iron ore powder. In order to control the setting time, less than 4% gypsum should be added to the clinker. During the cement production process, most of the raw materials are crushed and then pre-homogenized. During the preparation of cement raw materials, at least 3 tons of materials (including various raw materials, fuels, clinker, mixtures, and gypsum) must be ground for each ton of Portland cement produced. According to statistics, the grinding operation of dry-process cement production lines requires The power consumed accounts for more than 60% of the power of the whole plant, of which raw material grinding accounts for more than 30%, coal grinding accounts for about 3%, and cement grinding accounts ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/10C04B35/622C04B35/626
CPCC04B35/10C04B35/622C04B35/6261C04B2235/3206C04B2235/3208C04B2235/3232C04B2235/349C04B2235/386C04B2235/446C04B2235/96
Inventor 周俊华尹方勇王峰王征
Owner SHANDONG TIANHUI GRINDING WEAR TECH DEV CO LTD
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