B - Operations – Transporting – 03 – D
Patent
B - Operations, Transporting
03
D
361/29
B03D 1/14 (2006.01) B03D 1/02 (2006.01) B03D 1/24 (2006.01)
Patent
CA 2019790
METHOD AND APPARATUS FOR GENERATING MICROBUBBLES IN FROTH FLOTATION MINERAL CONCENTRATION SYSTEMS ABSTRACT OF THE DISCLOSURE A method and apparatus for generating microbubbles in a flowing liquid stream for use in a froth flotation system. The system utilizes a microbubble generator having a tubular housing with an inlet end and an outlet end. Located coaxially within the housing is an inner member with an elongated, tapered, exterior surface. A porous tubular sleeve is mounted between the housing and the inner member coaxially therewith to define with the cylindrical-interior surface of the housing an elongated air chamber of annular cross section. The porous sleeve has a cylindrical inner surface that defines with the exterior surface of the inner member an elongated liquid flow chamber of thin, annular cross section. An aqueous liquid is supplied to the liquid flow chamber at a relatively high flow rate and air under pressure is supplied to the air chamber so that air is forced radially inwardly through the porous sleeve to be diffused in the form of microbubbles in the flowing stream.
Carroll International Corporation
Macrae & Co.
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