Application of the renovated automatic flotation reagent dosing control system at Panyi coal preparation plant

In order to solve the problems encountered by the plant in the use of artificial flotation reagent dosing system,work is made on its transformation into an automatically- operated version,on the basis of the well- conceived renovation scheme. Following a description of the working principle,structural design and functions of the automated dosing control system,an analysis is made in the paper of the results obtained through the application of the system. Practice indicates that the use of the system has led to reduced labor intensity,noticeably improved flotation performance,higher stability of flotation concentrate ash,an increase of the yield of flotation concentration by 1. 01 percentage points,and a drop of consumption reagent by 0. 13 kg/t（ dry fine coal）,bringing in,therefore,remarkable economic benefit for the plant.