Abstract:

The traditional tower mill and its supporting classification system can not play the role of

classification and screening under some special working conditions. In order to solve the problem that the

particle size of grinding products is difficult to meet the technical requirements，the intermittent grinding of

ZTM series tower mill was studied. The results show that the intermittent grinding system adopts the internal

circulation fine grinding and timing quantitative feeding mode，which can get rid of the dependence of spe⁃

cial grinding conditions on cyclone and other classification equipment，and fully reflect the fine grinding

and ultrafine grinding capacity of tower mill. The system can give full play to the characteristics of energy

saving consumption reducing and prevention overground. Taking molybdenum tailings sample fine grinding

table processing capacity of 25 t/h as an example，when the product particle size is -0.045 mm 80%，the

grinding cycle of the tower mill is 20 min/time (the actual grinding time of each cycle is 13 min)，and the ac⁃

tual load coefficient of the equipment is 85%，the corresponding 400 kW motor should be matched. The in⁃

termittent grinding system of tower mill is expected to play the role of fine grinding and ultra-fine grinding

under special working conditions in mining and other fields.

Key words:

tower mill, fine grinding, classification, grinding system