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

A technology of grinding machine and grinding section, which is applied in cement production, grain processing, etc., can solve the problems of low cost and energy consumption, and achieve the effect of high strength, low material consumption and excellent earthquake resistance in the later stage

Inactive Publication Date: 2016-08-17
山东天汇科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the patent filed by the inventor on the same day, a ceramic grinding section for a cement grinder is disclosed, the formula of which is based on the traditional Al2O3-CaO-MgO-SiO2 quaternary system by adding tungsten carbide, titanium Zirconium and other additives have a series of excellent comprehensive properties such as low cost, low energy consumption, low material consumption, reduced carbon emissions, high hardness, high temperature resistance, long life, easy molding, good toughness, and high purity of the produced cement. However, it is still slightly lacking in shock resistance, wear resistance and impact resistance under extreme working conditions.

Method used

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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The ceramic grinding section of the cement grinder contains 92% of alumina, 0.5% of silicon nitride, 1% of kaolin, 2% of titanium carbide, 1.5% of nano-boron carbide, 1% of titanium nitride, and 2% of tantalum carbide by weight percentage. Prepared as follows:

[0035] (a) Batching: get all ingredients by weight percentage; configure PVA solution simultaneously, proportioning is PVA:water=8:100;

[0036] (b) Ball milling:

[0037] (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;

[0038] (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 isost...

Embodiment 2

[0047] The ceramic grinding section of the cement grinder contains 95% of alumina, 0.5% of silicon nitride, 0.8% of kaolin, 0.6% of titanium carbide, 2% of nano-boron carbide, 0.8% of titanium nitride, and 0.3% of tantalum carbide by weight percentage. Prepared as follows:

[0048] (a) Batching: get all ingredients by weight percentage; configure PVA solution simultaneously, proportioning is PVA:water=7:100;

[0049] (b) Ball milling:

[0050] (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;

[0051] (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 micro...

Embodiment 3

[0060] The ceramic grinding section of the cement grinder contains 92% of alumina, 2% of silicon nitride, 3% of kaolin, 0.2% of titanium carbide, 1.5% of nano-boron carbide, 0.8% of titanium nitride, and 0.5% of tantalum carbide by weight percentage. Prepared as follows:

[0061] (a) Batching: get all ingredients by weight percentage; configure PVA solution simultaneously, proportioning is PVA:water=10:100;

[0062] (b) Ball milling:

[0063] (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;

[0064] (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 section for a cement ball mill, and a preparation method thereof. The ceramic grinding section for the cement ball mill comprises the following raw materials in weight percentage: 92-95% of alumina, 0.5%-2% of silicon nitride, 0.8-3% of kaolin, 0.2-2% of titanium carbide, 1.5-2% of nano boron carbide, 0.8-1% of titanium nitride, and 0.3-2% of tantalum carbide. The ceramic grinding section is in the shape of a ball-column combination body, a corner-rounded cylinder or an up-and-down symmetrical type regular square pyramid. The ceramic grinding section 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 section for the cement ball mill has the advantages of high hardness, high wear resistance, high temperature resistance and the like. Meanwhile, the ceramic grinding section is extremely excellent in shock resistance, wear resistance and anti-impact performance.

Description

technical field [0001] The invention relates to the field of cement processing, in particular to a ceramic grinding section for a cement grinder and a preparation method thereof. Background technique [0002] The cement grinder has the characteristics of strong adaptability to materials, continuous production, large crushing ratio, and easy control of the fineness of the grinding product. The working principle of the commonly used cement grinding machine is that the material enters the mill chamber spirally and evenly through the feeding hollow shaft from the feeding device. There are stepped lining boards or corrugated lining boards in the chamber, and steel balls or steel sections of different specifications are installed inside. The rotation of the cylinder produces centrifugal force, which brings the steel ball or steel segment to a certain height and then falls, which impacts and grinds the material. The grinding section of the cement grinder is the grinding material m...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/622C04B35/626C04B35/634C04B35/64B02C17/20
CPCB02C17/20C04B35/10C04B35/622C04B35/6261C04B35/63416C04B35/64C04B2235/349C04B2235/3821C04B2235/3839C04B2235/3843C04B2235/3873C04B2235/3886C04B2235/5454C04B2235/94Y02P40/10
Inventor 周俊华尹方勇王峰王征
Owner 山东天汇科技有限公司
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