depressed collector
1.It has been shown that the synthesized chemicals, especially the product of pyrogallol and gallic acid reacting with chloride acetic acid, act as effective depressants in the flotation of calcite. When sodium oleate with 1×10 -4 mol/L is used as a collector, calcite can be completely depressed when the concentration of two chemicals is 4×10 -5 mol/L and 5×10 -5 mol/L at pH value 8.78 and 8.47, respectively.
