FOAM FLOTATION DEVICE Russian patent published in 2022 - IPC B03D1/14 B03D1/24 

FIELD: mining.

SUBSTANCE: proposed group of inventions relates to a device, in which foam flotation methods are used to extract valuable minerals from ore. The foam flotation device for processing of a flow of mineral raw materials contains a tank, in which an inner part is formed for containing pulp, at least one contact filter in the tank, at least one aerator for aeration of the flow of mineral raw materials, and a system for supply of the flow of aerated mineral raw materials to the contact filter, a mixer for shift of the flow of aerated mineral raw materials in the contact filter. The contact filter contains a set of outlet zones, which are vertically spaced apart from each other at intervals along the length of a contact filter zone, in which there is a possibility for the outlet of the flow of mineral raw materials from the contact filter and inlet to the inner part of the tank. Each outlet zone contains a set of outlet holes in a wall of the contact filter, and it is located directly under a corresponding rotor-stator assembly, and a control mechanism in the form of a corresponding round sleeve containing a set of outlet holes, which surrounds outlet holes in each outlet zone. The sleeve is made with the possibility of rotation relatively to the contact filter to regulate a discharge rate of the flow of mineral raw materials from each outlet zone. The foam flotation device is used in a method for processing of the flow of mineral raw materials, including: use of the aerator to aerate the flow of mineral raw materials, supply of the flow of aerated mineral raw materials into the inner part of the contact filter, mixing of the flow of mineral raw materials in the contact filter, and provision of an impact of shear forces on the flow of mineral raw materials, and regulation of the discharge rate of the flow of mineral raw materials and mineralized bubbles contained therein from the contact filter to the inner part of the tank in each outlet zone.

EFFECT: increase in the extraction of valuable mineral particles.

16 cl, 2 dwg