1. Best Seller in Bricks & Blocks [Premium] Insulating Fire Brick for Forge, Soft Insulated Fire Brick for Pizza Oven, Kilns, 2700F Fireplace Bricks, Fire Pit Accessories for Heater, Metal Clay, Jewelry Soldering 9"x 4.5" x 2.5"

2. Sodium aluminate is also used in the paper industry, for fire brick production, alumina production and so forth.