METHOD OF REGULATING PROCESS OF CLASSIFICATION OF SOLID MATERIAL IN VERTICAL FLOW WITH PULSATING AGITATION Russian patent published in 2014 - IPC B03B5/62 B03B13/00 

FIELD: metallurgy.

SUBSTANCE: method of regulating the process of classification of solid material in a vertical flow with pulsating agitation includes the change of flow rate of washing solution depending on the value of density of overflow pulp, penetration of slugs into the overflow, accumulation in the bottom part of the flow and maintaining during the whole process of dense sand layer, counterflow interaction of sands and washing solution, discharge of the washed sands. Optimum height of the dense layer of sands is adjusted and established by change of pressure of compressed air providing the pulsations, and the speed of the washing solution in the volume of dense layer, not occupied by sands, is taken as higher than the speed of hindered settling of the largest slags, using the boundary grain of which the classification is performed. Sensors of top and bottom levels of the dense layer are place permanently in the pulsation zone at the interface "compressed air - liquid". The washed sands are unloaded periodically at continuous feeding of unequigranular sediments and washing solution.

EFFECT: improvement of reliability of regulating the process of classification of solid materials and washing of soluble substances from sands.

3 cl, 1 dwg, 2 tbl, 1 ex