Pyrite (collectively referred to as pyrite, pyrite and pyrrhotite) is mainly used to produce sulfuric acid and sulfur. Sulfuric acid is mainly used to make chemical fertilizer (such as ammonium sulfate, calcium superphosphate, etc. it is also an important raw material for chemical industry, pesticide, medicine, explosives, metallurgy, papermaking, petroleum and other industrial sectors. In the chemical industry, sulfuric acid is used to manufacture chemical fertilizer, synthetic detergent, synthetic resin, water treatment, etc. in the metallurgical industry, sulfuric acid is used to dissolve ore, pickling rust spots and sludge on the surface of iron and copper. Sulfur is used for rubber, rayon, medicine and dyeing Materials, glass and other industrial sectors are also used as bleaching agents for flour, starch and sugar.
High grade pyrite (sulfur concentrate) cinder can be used for ironmaking. Low grade slag can be used as iron correction raw material for ordinary portland cement.
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