Abstract: In order to improve the flotation performance, industrial test is made on the flotation of the fine coal of the plant using novel FQB-I frother and FMD-II collector, and the result obtained is compared with the process of using kerosene and heteroalcohole. As evidenced by test result, with the use of FQB-I and FMD-II and the addition of kerosene in FMD-II at a volume ratio of 20%, a much improved flotation result with less consumption of reagent and consistency of concentrate quality can be obtained.