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Ball stopping plate for abrasion-resistant ceramics and preparation method thereof

A technology of wear-resistant ceramics and ball baffles, applied in the field of refractory materials, can solve problems such as limited lifting space, unstable quality, and fast heating and cooling speed, and achieve the effects of saving resource consumption, uniform overall structure, and increasing service life

Active Publication Date: 2017-01-04
山东铭特陶瓷材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] First of all, due to the poor thermal shock effect of corundum itself, Al 2 o 3 The higher the content, the less the number of thermal shocks, and the temperature of firing wear-resistant ceramic balls is generally at the highest temperature of 1500 ° C ~ 1600 ° C, from room temperature to the highest temperature for 12 h ~ 15 h, heat preservation for 10 h ~ 12 h, and from the highest temperature to room temperature for 12 h ~ 15h, the heating and cooling speed is fast, the current baffle plate has poor resistance to rapid cooling and rapid heating, and it is easy to break at high temperature
[0005] Secondly, corundum is used as the raw material in the production of the existing ball baffles to improve the shrinkage and thermal shock resistance of the product. Due to the characteristics of corundum, there is limited room for improvement
[0006] Finally, most of the existing baffles are formed by pressing or manual ramming. Due to the different wall thickness of the product, the force is not uniform during forming, resulting in uneven density and low strength of the entire product.
There are many weak parts, high temperature bending resistance difference, and the product differentiation is large during mass production, and the quality is unstable

Method used

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  • Ball stopping plate for abrasion-resistant ceramics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Mix 15 parts of alumina micropowder, 25 parts of corundum powder and 9 parts of quartz powder in proportion, put them into the mixer and stir evenly;

[0031] 2) Add 5 parts of sodium hexametaphosphate water reducer to the mixer, add 10 parts of water, and fully stir for 8 minutes to form a slurry;

[0032] 3) Then add 11 parts of 18 mesh-150 mesh tabular alumina, 21 parts of 6 mesh-18 mesh tabular corundum, 24 parts of 18 mesh-150 mesh white corundum, 11 parts of 6 mesh-18 mesh white corundum, 3 mesh- 9 parts of fused mullite of 6 mesh, 10 parts of quartz of 18 mesh to 150 mesh, 3 parts of zirconium corundum, stirring for 8 minutes;

[0033] 4) Pour the stirred material into a water-absorbable mold, place it on a vibration table, and form it by vibration;

[0034] 5) Demould the produced semi-finished products and place them in a drying room to dry at 65°C;

[0035] 6) After the semi-finished product is dried, put it into a kiln and burn it at a maximum temperatur...

Embodiment 2

[0037] 1) Mix 12 parts of alumina micropowder, 28 parts of corundum powder and 8 parts of quartz powder in proportion, put them into a mixer and stir evenly;

[0038] 2) Add 5 parts of sodium hexametaphosphate superplasticizer to the mixer, add 12 parts of water, and stir fully for 13 minutes to form a slurry;

[0039]3) Then add 9 parts of 18 mesh-150 mesh tabular alumina, 24 parts of 6 mesh-18 mesh tabular corundum, 21 parts of 18 mesh-150 mesh white corundum, 13 parts of 6 mesh-18 mesh white corundum, 3 mesh- 8 parts of 6-mesh fused mullite, 12 parts of 18-150 mesh quartz, 2 parts of zirconium corundum, stirring for 13 minutes;

[0040] 4) Pour the stirred material into a water-absorbable mold, place it on a shaking table or artificially vibrate, and form it by vibration;

[0041] 5) Demould the produced semi-finished products and place them in a drying room to dry at 60°C;

[0042] 6) After the semi-finished product is dried, put it into a kiln and burn it at a maximum t...

Embodiment 3

[0044] 1) Mix 18 parts of alumina micropowder, 23 parts of corundum powder and 11 parts of quartz powder in proportion, put them into a mixer and stir evenly;

[0045] 2) Add six parts of sodium hexametaphosphate superplasticizer to the mixer, add 5 parts of water, and stir fully for 20 minutes to form a slurry;

[0046] 3) Then add 13 parts of 18 mesh-150 mesh tabular alumina, 18 parts of 6 mesh-18 mesh tabular corundum, 29 parts of 18 mesh-150 mesh white corundum, 9 parts of 6 mesh-18 mesh white corundum, 3 mesh-6 10 parts of fused mullite, 8 parts of 18-150 mesh quartz, 4 parts of zirconium corundum, stirring for 5-20 minutes;

[0047] 4) Pour the stirred material into a water-absorbable mold, place it on a shaking table or artificially vibrate, and form it by vibration;

[0048] 5) Demould the produced semi-finished products and place them in a drying room to dry at 75°C;

[0049] 6) After the semi-finished product is dried, put it into a kiln and burn it at a maximum te...

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Abstract

The invention provides a ball stopping plate for abrasion-resistant ceramics and a preparation method thereof and belongs to the technical field of refractory materials. The ball stopping plate is characterized by being prepared from, by weight, 1-30 parts of alumina micro powder, 5-35 parts of corundum powder, 1-20 parts of quartz powder, 6-65 parts of white corundum, 6-55 parts of tabular corundum, 1-15 parts of electro-fused mullite, 1-20 parts of quartz particles, 0-6 parts of zirconium corundum and 1-10 parts of water reducing agent. in the preparation steps, the alumina micro powder, the corundum powder and the quartz powder are firstly mixed in proportion, the water reducing agent is added to form slurry; the tabular corundum, the white corundum, electro-fused mullite, the quartz grains and the zirconium corundum are stirred and dried; low temperature firing is performed to obtain the ball stopping plate. A production cycle is shortened, improve production, the yield is improved, the fold resistance is improved, the thermal shock performance of products is improved, and the service life is prolonged.

Description

technical field [0001] A ball baffle plate for wear-resistant ceramics and a preparation method thereof, belonging to the technical field of refractory materials. Background technique [0002] The ball baffle is mainly used in the high-temperature firing of wear-resistant ceramic balls. In order to prevent the kiln car from rolling the wear-resistant ceramic ball, it is placed on the outer edge of the kiln car to block the ball. The main component of the current baffle is Al 2 o 3 >90% corundum plate. But the currently used ball baffle has low service life, poor thermal shock effect, and is easy to break at high temperature, so that the ceramic balls roll out, causing the phenomenon of kiln plugging. [0003] The main reasons for the unsatisfactory thermal shock performance of the current baffle are as follows. [0004] First of all, due to the poor thermal shock effect of corundum itself, Al 2 o 3 The higher the content, the less the number of thermal shocks, and t...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/10C04B35/622C04B35/63
CPCC04B35/10C04B35/622C04B35/6303C04B35/66C04B2235/3418C04B2235/447C04B2235/6022C04B2235/77C04B2235/96
Inventor 王哲
Owner 山东铭特陶瓷材料有限公司