(1) refractory
Higher silica content of semi silica refractory products, refractory degree can reach 650 to 1710 DEG C, close to the silica brick.
(2) load softening temperature
In the semi silica refractory products, forming part of the network structure, so the load softening 
temperature is slightly higher than the clayey refractory products, up to 1350 to 1450 DEG C.
temperature is slightly higher than the clayey refractory products, up to 1350 to 1450 DEG C.
(3) the thermal shock stability
Semi silica refractory products than the clayey refractory products thermal shock stability slightly worse, the general water cooling times is 10 or so, the reason is quartz expansion coefficient, rapid changes of temperature, volume changes lead to local stress concentration.
(4) the slag resistance
Semi silica refractory products in the chemical nature belongs to semi acidic, so resistant to acidic slag erosion ability.
(5) the line changes heavy firing
In the semi silica refractory products, due to the expansion of high temperature contraction offset silica clay, so the volume stability, than the clayey refractory product reheating linear change.
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