Ways for comprehensive utilization of phosphogypsum the by product from production of phosphatic compound fertilizer

Phosphogypsum of 15 million tons is being produced each year from phosphate industry and this must be disposed properly in view of economic and environmental considerations. Phosphogypsum can be made into various products such as calcined gypsum, αhighstrength gypsum powder, ornament materials (papered gypsum plank, ornamental gypsum plank, fabric gypsum plank, partition gypsum plank cement retarder, and wall body material, the usage of the above products and their manufacture are described.