　　Mo silicon brick is made of sillimanite, mullite, high-alumina bauxite clinker, silicon carbide, and a binder. After granulating and pulverizing, they are mixed in a certain proportion, and then pressed into shape. Products with good seismic performance, high strength, good resistance to high temperature chemical attack, and good wear resistance. According to the physical and chemical indicators, it is divided into three brands: GM1680, GM1650 and GM1550. Mainly used in cement rotary kiln transition zone decomposition zone, tertiary air duct, decomposition furnace, lime rotary kiln, nickel iron rotary kiln and other kiln.

Physical and chemical indicators:

Item	Indicator
Item	GM-1680	GM-1650	GM-1550
Al2O3 % ≥	65	63	60
SiC+SiO2 % ≥	30	30	28
Bulk Density g/cm³ ≥	2.65	2.60	2.50
Refractory ℃ ≥	1800	1790	1790
0.2MPaLoad softening start temperature ℃ ≥	1680	1650	1550
Apparent porosity% ≤	18	19	20
Compressive strength at room temperature Mpa ≥	90	85	85
Thermal shock stability(1100℃,Water cooling) Times ≥	12	10	10
Abrasion resistance at room temperature cm³ ≤	8.0	8.0

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