Silica Bricks for Hot Blast Stove PHYSICAL AND CHEMICAL PROPERTIES: SiO2 content: 94% min Refractoriness: 1700℃ Apparent porosity 22%max True density: 2.35g/cm3 APPLICATION: Widely used in coke ovens. Used in high temperature sections of the checker chamber in hot blast stoves. Used as low-cost alternative to andalusite and mullite checker bricks in hot blast stoves. High refractoriness, average thermal shock resistance make it suitable in consistant temperature environment.