Benzothiazoles xanthates

Accelerators used include hexamine, diphenyl guanidine, ethylidene aniline, mercapto-benzothiazole, dibenzothiazole disulfide, N-Cyclohexyl benzothiazole sulfenamide, sodium diethyl dithiocarbamate, tetramethylthiuram disulfide, tetraethyl thiuram disulfide, dipentamethylene thiuram tetrasulfide, sodium isopropyl xanthate, zinc butyl,... 

As shown in Fig. 1.7, sodium mercapto-benzothiazole performs strong collecting capability toward galena, but weak collecting capability toward pyrite. Comparison of sodium mercapto-benzothiazole and hulyl xanthate in the flotation of galena mineral is as follows ... 

IV) The flotation performance of mercapto-benzothiazole is worse flian that of xanthate when oxide minerals are not prevulcanized. But the flotation performance of mercapto-benzothiazole becomes better than that of xanthate when oxide minerals are prevulcanized. 

V) The concentrate grade wUl decrease when the dosage of mercapto-benzothiazole is too large. Therefore, ercapto benzothiazole is usually used with xanthate or aerofloat. 

---