IMPROVED SEPARATION SYSTEM WITH AIR SUPPLY Russian patent published in 2017 - IPC B03B5/66 B03D1/24 B03D1/02 B03B13/00 

FIELD: technological processes.

SUBSTANCE: system of separation of multiple particles, contained in the pulp, includes a separation tank, pulp feeder, branched pipeline for pseudofluidized flow, gas supply system and underflow pipeline, which are all designed to create a pseudofluidized flow in the separation tank by feeding the pulp through the pulp feeder and providing the pulp with the possibility of interaction with pseudofluidized flow from the branched pipeline for pseudofluidized flow. The separation tank contains a tray for collecting particles, moved to the top of the separation tank. The gas supply system has been implemented to control the size of gas bubbles in the pseudofluidized flow and contains a gas supply pipeline, bypass upflow water pipeline to bypass said gas supply pipeline. The gas supply system is adjustable to vary the size of the gas bubbles by changing the flow rate of the upflow water through said gas supply pipeline. The gas supply pipeline and the bypass pipeline converge in one point to create a pseudofluidized flow. The pseudofluidized flow volume is controlled by changing the flow rate of upflow water through the gas supply system. In another embodiment, the separation system comprises of an upflow water feed line connected upstream of the gas supply system and a reagent supplied into said particle treatment water supply line. The method for controlling the size of gas bubbles in the pseudofluidized flow, directed to the branched pseudofluidized flow pipeline in the separation tank, includes the stages, at which the first portion of upflow water is moved through the gas supply pipeline, the second portion of upflow water is moved through the bypass pipeline, the flow rate of the first portion of upflow water is changed, the first portion of the upflow water is saturated with gas in the gas supply pipeline in order to make gas bubbles, the first and second portions of upflow water are combined to make a pseudofluidized flow and the pseudofluidized flow is fed into the separation tank through the branched pseudofluidized flow pipeline.

EFFECT: higher separation efficiency.

28 cl, 4 dwg