cellule Callow-MacIntosh

Désignations

Codes : pays ou zone où la désignation a cours (CH, FR, DE, EU = Union européenne, INT = usage international). Une désignation barrée est déconseillée.

Définitions

anglais

[A pneumatic flotation machine consisting] of a long trough in the bottom of which is a longitudinal cylindrical rotor, covered with a porous medium, revolving slowly at about 15 revolutions per minute. The rotor is mounted at each end on hollow shafts extending out of the cell at each end through packing glands or through specially designed gland eliminators. Low-pressure air is introduced through the shaft at either end, or, for better control of aeration in various parts of the cell, the rotor may be divided into two sections and air introduced at both ends. The rotor is fitted with two longitudinal angle-iron scraper bars, which prevent settling and accumulation below it and thus protect the mat. The pulp enters at one end and is subjected to thorough aeration in passing through the machine. Froth overflows the sides, and tailings are discharged at the end by means of an adjustable weir overflow.