Pyrite Grain and Air Bubble Attachment Kinetics in Agitated Pulp
A. A. NIKOLAEV, A. A. PETROVA, B. E. GORYACHEV
National University of Science and Technology-MISiS, Leninskii pr. 4, Moscow, 119049 Russia
Keywords: флотация, минерализация пузырька воздуха, кинетика флотации, пирит, ксантогенат калия, флотационная сила, закрепление частицы на пузырьке, flotation, air bubble mineralization, flotation kinetics, pyrite, potassium xanthate, flotation force, particle-bubble attachment
Abstract
Air bubble and pyrite grain attachment is studied. It is found that mineralization area on air bubble depends on pulp agitation time, potassium butyl xanthate concentration and pyrite grain size. The authors show the connection between mineralization area of air bubble and weight of mineral load. Using experimental data, it is calculated how many pyrite grains from a narrow size range attach air bubble during pulp agitation time, and the weight of these grains is estimated. Physical forces on mineral loading exerted by pyrite grains -0.1 + 0.071, - 0.071 + 0.044 and -0.044 + 0 mm in size on air bubble at different pulp agitation times, as well as the absolute and specific retention forces are calculated, too.
|
