Application study of the high-functional & environmentally friendly collectors N9858 & N9836 for coal flotation

Comparison by experiment of the flotation performance with reagent N9858 and N9836 against diesel oil for different coals;for coarse coal slime with difficult floatability,N9858 and N9836 gave more superior flotation performance than diesel oil: at similar concentrate ash,the recovery of combustibles increased by 16%;for fine coal slime with easy floatability,N9858 gave even strong flotation capacity: at similar concentrate ash and reagent dosage 50% lower than that of diesel oil,recovery of combustibles increased respectively by 5.90% .With N9858 and N9836,actual flotation performance more matched that represented by step-release flotation test.