What materials are matigas na brick gawa sa?

Ang mga refractory brick ay gawa sa refractory clay at refractory raw na materyales sa pamamagitan ng molding at calcining. Karaniwang ginagamit ang clay refractory brick, high alumina refractory brick, silica brick, mullite refractory brick, magnesia refractory brick, at alkaline refractory brick.