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High aluminium, heat shock resistant refractory brick and production process thereof

A thermal shock-resistant, refractory brick technology, used in ceramic molding machines, manufacturing tools, etc., can solve the problems of short service life and poor seismic performance of refractory bricks

Inactive Publication Date: 2006-06-28
ZHENGZHOU YUXING REFRACTORY MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above situation, the object of the present invention is to provide a high-alumina thermal shock-resistant refractory brick and its production method, which can effectively solve the problems of poor shock resistance and short service life of the refractory brick. The technical solution is that the refractory brick of the present invention Bricks are made of high alumina material, cordierite, andalusite and white clay as the base material, and then add 3-15% of the weight of the base material as a mud binder. The production method is to add the binder according to the requirements of the base material composition. It is evenly mixed and ground, shaped by a molding machine, and then fired in a sintering furnace at a high temperature of ≥1350°C. The product of the present invention has good thermal shock resistance, effectively prevents bricks from falling and breaking during use, and has a long service life. High efficiency, avoiding huge economic losses caused to enterprises due to shutdown and maintenance, broad prospects for popularization and application, and huge economic and social benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] The heat-shock resistant refractory brick of the present invention is made of a base material and a binder. The base material is composed of 60% high alumina material, 10% cordierite, 20% andalusite and 10% white clay by weight. Binding agent is to be made up of by weight: 180 order andalusite powder 30%, 180 order clay powder 20% and water 50%, and the adding weight of binding agent in base material is 10% of base material weight (being base material: binding Agent = 100:10 or written as 10:1).

[0010] Such as 1000kg of base material, including 600kg of high alumina material, 100kg of cordierite, 200kg of andalusite and 100kg of white clay, and the binder is composed of 30kg of andalusite powder, 20kg of clay powder and 50kg of water, that is, the refractory brick is made of 1000kg of base material Made of material with 100kg of binder.

[0011] The production method that realizes embodiment 1 is, at first select base material, by weight: high alumina material 60% (o...

Embodiment 2

[0013] The heat-shock resistant refractory brick of the present invention can also be by weight: the base material that high alumina material 55%, cordierite 12%, andalusite 18% and white mud 15% are formed and by weight: andalusite powder 30%, clay It is made of a binder composed of 30% powder and 40% water, and the amount of binder added is 12% of the base material. For example, a base material of 10,000 kg is composed of 5,500 kg of high alumina material, 1,200 kg of cordierite, 1,800 kg of andalusite and 1,500 kg of white clay. The binder is composed of 360kg of andalusite powder, 360kg of clay powder and 480kg of water.

[0014] The process steps to realize embodiment 2 are the same as embodiment 1, wherein the refractory brick molding process (method) can also adopt the refractory brick molding method of patent application number 200510107273.7, and will not be repeated.

[0015] It can be seen from the above that the composition of the refractory brick of the present in...

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Abstract

A heat shock resistant refractory high-Al brick with long service life is prepared from high-Al material, cordierite, andalusite, argil and mud as adhesive through grinding, shaping and sintering.

Description

1. Technical field [0001] The invention relates to a high-aluminum heat-shock-resistant refractory brick used in a hot blast furnace for smelting iron and steel and a production method thereof. 2. Background technology [0002] The rapid development of science and technology provides a great opportunity for the development of large-scale blast furnace and hot blast stove longevity technology. Subsequently, the quality of hot blast furnace lining materials is becoming more and more important. The working conditions of the hot blast furnace are harsh, and the alternating heat and cold are frequent (thermal shock phenomenon), which is more destructive to the refractory materials in these parts, and the life of the hot blast furnace is closely related to it. Andalusite bricks, cordierite mullite bricks, and anti-flaking high-alumina bricks are generally made of water or lignin solution as a binder, and the ratio of refractory brick base materials is not reasonable. Therefore, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/02B28B3/00C04B14/04C04B35/66
Inventor 刘世聚周福辰张德松黄丙乾范建超刘浩磊李少鹏臧中敏
Owner ZHENGZHOU YUXING REFRACTORY MATERIAL