Generally, refractory bricks use clay refractory mortar, raw material and clinker are halves
Of course is clinker, the raw material belongs to precast block, besides, clay and chamotte are mixed with glassy water and fine powder, fine powder belongs to raw materials.
Generally, fireclay used to build fireclay?brick is raw materials, it can also use clinker. After calcination, the raw material will shrink, but the brick seam is thin, the deformation has little effect.