Cărămizi multite din carbură de siliciu pentru cuptoare de ciment

Silicon carbide mullite bricks are fired bricks composed of mullite (3Al2O3.2SIO2) și carbură de siliciu (Sic) Ca mineralele principale. Silica-mullite brick has the high-temperature resistance of mullite and the wear resistance, rezistență la coroziune, and good thermal conductivity of carbură de siliciu.

Physical and chemical indicators of silica mullite refractory brick

Produs		AZM-1650	AZM-1680
Chemical composition	SiC+SiO2	≥30	≥32
	Al2O3	≥65	≥65
Densitate în vrac(g/cm3)		≥2.65	≥2.70
Porozitate aparentă (%)		≤19	≤19
Rezistența la zdrobire la rece(Mpa)		≥90	≥100
Refractoriness Under Load		≥1650	≥1680
Rezistenta la socuri termice		≥15	≥20

The main uses of silicon carbide mullite brick

It is suitable for the transition zone, Zona de preîncălzire, Conducta aeriană terțiară, Preîncălzitor în cinci etape, și cuptorul de var de descărcare de copt de ciment rotativ.

Comparison of silicon mullite brick and magnesia-alumina spinel bricks

Silica mullite refractory bricks are suitable for the transition zone of cement kilns as well as Cărămizi de spinel Magnesia-Alumina. În comparație cu cărămizile spinel Magnesia-Alumina, Au o performanță cu costuri mai mari. În comparație cu cărămizile spinel Magnesia-Alumina, silicon mullite bricks have the advantages of low thermal conductivity, bună stabilitate la șoc termic, and high cost performance.

Compared with silicon carbide mullite bricks, magnesia-alumina spinel bricks have the advantage of stronger corrosion resistance and the disadvantage of high thermal conductivity. In the system of waste cement rotary kiln processing, magnesia-alumina spinel bricks have better alkali-sulfur corrosion resistance. , so in large-scale rotary kilns, magnesium-alumina spinel bricks are still mostly used for masonry due to safety factors.