Heat shock resistant refractory brick formed with slurry binding agent and production process thereof

A thermal shock-resistant, refractory brick technology, applied in the field of thermal shock-resistant refractory bricks, can solve the problems of short service life and poor seismic performance of refractory bricks

A thermal shock-resistant, refractory brick technology, applied in the field of thermal shock-resistant refractory bricks, can solve the problems of short service life and poor seismic performance of refractory bricks

CN1792950AInactive Publication Date: 2006-06-28ZHENGZHOU YUXING REFRACTORY MATERIAL
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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 by weight: 55% of mullite, 8% of sillimanite powder, 7% of high alumina powder, and 10% of andalusite , cordierite powder 10% and white mud 10%, the binder is composed of 180 mesh andalusite powder 30%, 180 mesh clay powder 20% and water 50%, the weight of the binder in the base material It is 10% of the weight of the base material (ie base material: binder = 100:10 or written as 10:1).

[0010] Such as 1000kg of base material, including 550kg of mullite, 80kg of sillimanite powder, 70kg of high alumina powder, 100kg of andalusite, 100kg of cordierite powder and 100kg of white mud. 50kg of water, that is, refractory bricks are made of materials consisting of 1000kg of base material and 100kg of mud binder.

[0011] The production method that realizes embodiment 1 is, at first select base material, by weight: mullite 55% (or 550kg), sillimanit...

Embodiment 2

[0013] The heat-shock resistant refractory brick of the present invention can also be by weight: mullite 50%, sillimanite powder 5%, high alumina powder 10%, andalusite 8%, cordierite powder 15% and white mud 12%, the base of composition The material is made by weight: 30% of andalusite powder, 30% of clay powder and 40% of water. 5000kg, 500kg of sillimanite powder, 1000kg of high alumina powder, 800kg of andalusite, 1500kg of cordierite and 1200kg of white mud. The binder is composed of 360kg of andalusite powder, 240kg of clay powder and 600kg 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 invention is completely different from that of the existing anti-shock r...

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Abstract

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

Description

1. Technical field [0001] The invention relates to a thermal shock-resistant refractory brick formed by combining mud and used in a blast stove for smelting iron and steel and a production method thereof. 2. Background technology [0002] The development of the world economy provides a broad market for steel production. At the same time, higher requirements have been put forward for steel production. Especially with the large-scale blast furnace and the development of hot blast stove longevity technology, the quality of hot blast furnace lining materials is becoming more and more important. Due to the harsh working conditions of hot blast stove burner bricks, pipe bricks, hot blast outlets and other parts, frequent alternation of cold and hot (heat Shock phenomenon), it is more destructive to the refractory materials in these parts, and the life of the hot blast furnace is closely related to it. Anti-flaking high-alumina bricks are generally formed by combining water or li...

Claims

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Application Information

Patent Timeline
28 Jun 2006
Publication
CN1792950A
IPC
C04B14/04; B28B3/00; C04B35/66
Inventors
刘世聚; 周福辰