FERROUS SULFATE CHEMICALS DERIVED FROM WASTE PRODUCTS AND VIRGIN MATERIALS FOR USE IN THE MANUFACTURE OF LIVESTOCK FEED, WASTE TREATMENT CHEMICALS, FERTILIZER, SOIL MODIFICATION CHEMICALS, PIGMENTS, CEMENT SLURRY, CATALYTIC FUEL ADDITIVES, DEODORIZERS AND PLANT TONIC, AND FOR USE IN CONNECTION WITH ABSORPTION OF SULFUR DIOXIDE FROM GASES, ELECTRO DEPOSITION, REDUCTION OF NITROGEN DIOXIDE, TREATMENT OF BLAST FURNACE SLAG, REMOVAL OF OXIDES OF SULFUR FROM GASES, IRON ENRICHMENT OF FLOUR, WATER ...