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Low Creep Clay Brick

The low creep clay brick is made of super coke, andalusite and fused mullite with a small amount of additives. The high quality hot air furnace clay brick with the porosity of 1-3 ~ 15%, creep rate of 0 ~ 0 8%, softening temperature of 0 2Mpa under load of 1 472 ℃, and compressive strength of 0 0MPa at room temperature was developed by the process of three-level battering and co-grinding powder. The clay brick has good volume stability, creep and wear resistance at high temperature. Application Widely used in metallurgy, building materials, chemical industry, petroleum, machinery manufacturin

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Shape Refractory

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Low Creep Clay Brick Details

Application

Widely used in metallurgy, building materials, chemical industry, petroleum, machinery manufacturing, silicate, power and other industrial fields, widely used in hot air furnace.

Low creep clay bricks are further improved in the production process of ordinary clay bricks, mainly to meet the requirements of the working environment of blast furnace. The upsizing of blast furnace requires higher air temperature of blast furnace hot blast furnace. Due to the increase of wind temperature, the requirement of clay bricks used in hot air furnace is also raised, which requires better high-temperature volumetric stability, creep and wear resistance. Therefore, ordinary clay bricks produced entirely from clay can no longer meet the requirements of high wind and hot wind, so it is necessary to produce high quality clay bricks with low creep. Low creep clay brick with raw materials must be compact structure, high purity, less impurities, to avoid any products when burning too much liquid and lower creep resistance, often with the chamotte clinker as aggregate, products are also so good thermal shock resistance and erosion resistance, thus will generally add part of mullite, generally around 1400 ° C in firing.

Physical And Chemical Indicators

Chemical composition%	Al 2O 3%	42-53	≥42	≥58
	Fe 2O 3%	1.6	2.0	1.5
	CaO+MgO%	0.7	0.7	0.7
	Na2+K2O%	0.8	0.8	0.8
Bulk density g/cm 3		2.2	2.2	2.45
Show porosity %≤		17	17	16
Normal temperature compressive strength MPa		40	40	50
0.2MPa Initial temperature of softening under load		1450	1450	1600
High temperature creep rate%(1280℃,0.2MPa,25h)CS		0.4	-	0.4
High temperature flexural strength MPa	1200℃	10	-	-
High temperature flexural strength MPa	1500℃	4	-	6
Thermal expansion rate (20℃-1000℃)% COTE		0.7	0.7	0.7

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