Corundum mullite small series of stone products on the characteristics of mullite brick

[ Publish: 2018-11-27 ]

Mo lai stone brick, believe that people in the relevant industry must have some understanding, but there are many people do not understand this, never mind, corundum mo lai stone products today small make up for you to introduce its characteristics. Mullite brick is actually a high aluminum refractory with mullite (3Al2O3·2SiO2) as the main crystalline phase. Its general alumina content ranges from 65% to 75%. Mineral composition in addition to mullite, which contains lower alumina also contains a small amount of glass phase and quartz square; Higher alumina also contains a small amount of corundum. Mullite brick is mainly used in hot blast furnace roof, blast furnace body and bottom, glass melting furnace heat storage chamber, ceramic sintering kiln, oil cracking system dead Angle lining.

High refractoriness mullite brick, can reach more than 1790 ℃. The rul start temperature of 1600 ~ 1700 ℃. Normal temperature and pressure strength 70 ~ 260MPa. Good thermal shock resistance. There are sintered mullite brick and electric melting mullite brick two kinds. Sintered mullite brick with high bauxite clinker as the main raw material, adding a small amount of clay or raw bauxite as a binder, molding, burning and made. Electrofused mullite brick is made of high bauxite, industrial alumina and refractory clay by adding charcoal or coke particles as reducing agent.

The crystallization of electrofused mullite brick is larger than that of sintered mullite brick, and its thermal shock resistance is better than that of sintered product. Their high temperature performance mainly depends on the content of alumina and the uniformity of mullite phase and glass distribution. It is mainly used for hot blast furnace roof, blast furnace body and bottom, glass melting furnace regenerator, ceramic sintering kiln, dead Angle lining of petroleum cracking system, etc.

About the characteristics of mullite stone brick, corundum small make up of stone products for you to introduce here, hope that the corundum small make up of stone products above can help you better understand mullite stone brick.

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