Problem Associated With Beneficiation Of Non Metallic ...
Jul 08, 1980· Beneficiation of coals, metallic, and nonmetallic ores by froth flotation process using polyhydroxy alkyl xanthate depressants for pyrite in coals, or in metallic and nonmetallic ores to obtain pyrite sulfur free coal, as well as pyrite free metallic or nonmetallic minerals by depressing pyrite and marcasite as the waste material of coal or ore, comprises; adding to a water .