Abstract:
The paper starts with an introduction to the present state in the application of the reagents for flotation of fine coal, the problems encountered, and the urgent need to develop the environmentally-friendly high-efficiency flotation collector, and then goes to analyze the property and flotability of the fine coal based on the property of Linhuan Plant′s raw coal feed. The formula for preparing the new-type environmentally-friendly high-efficiency collector is defined based on the study of the property of the fine coal feed, such as the contact angle, surface functional group and wetting heat, and the formula is then optimized through uniformity test. The physico-chemical parameters in relation to environmental protection and occupational health are also determined. As evidenced by both laboratory and industrial test, the collector developed is environmentally-friendly, high in efficiency and harmless to health, and proves to be superior to the collectors currently used for fine coal flotation both at home and abroad.