Gypsum

Zai Trade International also supplies Gypsum to Cement Industry in Pakistan. Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate most commonly found in layered sedimentary deposits in association with halite anhydrite sulfur calcite and dolomite. Gypsum (CaSO4.2H2O) is very similar to Anhydrite (CaSO4). The chemical difference is that gypsum contains two waters and anhydrite is without water. Gypsum is the most common sulfate mineral. Gypsum uses include: manufacture of wallboard, cement, plaster of Paris, soil conditioning, a hardening retarder in portland cement. Gypsum supplied by Zai Trade International has following specifications: