FLOTATION CHAMBER Russian patent published in 2023 - IPC B03D1/14 

FIELD: flotation chambers.

SUBSTANCE: proposed group of inventions relates to a flotation chamber, to a method for separating valuable material containing particles from particles suspended in the pulp, and to the use of a flotation chamber. The flotation chamber is used to recover valuable material suspended in the slurry, namely to recover copper-bearing particles from the low grade ore. The flotation chamber for processing particles suspended in the slurry and for separating the slurry into a bottom product and an upper product contains a fluidized bed, which is formed by a fluid supply line configured to supply fluid to the flotation cell and a flotation gas supply line configured to supply flotation gas, in which flotation gas bubbles are attracted to hydrophobic particles to form agglomerates of bubbles and particles that rise to the top of the flotation chamber, an extraction zone at the top of the flotation chamber, configured to collect agglomerates of bubbles and particles rising in the fluidized bed, a chute edge and a recovery chute located in the upper part of the flotation cell, configured to remove particles collected in the extraction zone from the flotation chamber as an overhead product, and a tailings outlet located below the chute and configured to remove uncollected particles, descending from the extraction zone as the bottom product. The flotation chamber has a height (H) measured from the bottom of the flotation chamber to the edge of the chute. The flotation chamber is configured to supply primary slurry feed containing fresh slurry through the first feed inlet in the first position (P) within the upper 50% (1/2 H) of the flotation cell height and above the tailings outlet, and with the possibility supplying a secondary pulp feed comprising at least slurry re-passed from the flotation chamber into the fluidized bed through a second feed inlet at a second position (S) below the first position to promote formation of the fluidized bed. It is possible to obtain the slurry re-passed from the flotation chamber in the third position (R) between the specified chute and the tailings outlet.

EFFECT: increase in the efficiency of the particle separation process in the flotation chamber and, accordingly, an increase in the amount of extracted valuable material.

36 cl, 6 dwg