To question on calculation of structural elements of column apparatuses with downward pulp-air movement

摘要

A theoretical calculation has been made of structural components and running conditions of equipment operating on the heterogeneous media - columned floatation apparatuses with downward movement of pulp-air spray. Based on the mechanism of mass mineralization in the real conditions of floatation pulp, integrity of the floatation complexes in steady downward flow was shown to depend on hydrophobic behavior of mineral particles only. Selection of mineral particles is determined by reduction of included gas (increase of capillary pressure in a bubble) along the downward flow and a difference of hydrophobic behavior of minerals, i.e. separation of mineral particles is caused by selective demineralization the extent of which can be controlled by the depth of steady downward pulp-air flow. Diameter and height of the last are the structural parameters according to which initial theoretical calculation of the floatation columned apparatus is possible as a whole for a certain ore type.