It uses in classifying in non-ferrous and ferrous metal mineral. SF is the mechanical agitation type, and it can own draw It can own draw the inspiration and the pulp; Compared to A, its spirit is big , and the power loss low, and the impeller lap wears lightly; JIF has the self-absorption ability, the suction intensity big, and it may adjust the air input in 0.1---1m3/m2min; the impeller diameter is small, the rotational speed low, consuming electricity few, also advantageous for the automatic control.
   Impeller of model BF flotation cell is composed of the dosed double section cones and ot can produce strong smutty cycle doumward.Its features are as follows:
(1)The capacity of air suction is large, the power consumption is low.
(2)Every tend has three functions of air suction, slurry suction and flotation simultaneously being unique in flotation return circuit without need for any supplementary equipment, the circuit change is convenient for horizontal location.
(3)The slurry cycle is rational, the settlement of coarse sand can be reduced into full play.
(4)The regulation is convenient to equip auto and electro-controlling arrangements for slutty level.