MIXER-AERATOR FOR LIQUID-PHASE STREAMS Russian patent published in 2016 - IPC B28C5/38 

FIELD: technological processes.

SUBSTANCE: invention relates to industry, namely to devices for compressed air aeration of continuous liquid phase flows. Mixer-aerator is made up of cylindrical housing, separated by foam spreader into two chambers, with located in mixer upper chamber of continuous flow feed branch pipe of foaming agent by pump and compressed air feed branch pipe by compressor above foam spreader, rotating on central axis of mixer at rate of 1,000-1,500 l/min. Fed by pump into bottom chamber mixer liquid phase flow is mixed with fine-pore foam from upper chamber by two screws with opposite inclination angles of blades on central axis at rate of 1,000-1,500 l/min, aerated fluid flow (foam mass) with excess pressure of 0.25-2.5 MPa is removed from by branch pipe from middle of lower mixer chamber into channel of foam mass duct. By reducing number of defects of foamed mass structure invention allows reducing heat conductivity of foam concrete in 1.5-2 times and increase its mechanical strength in 3-5 times.

EFFECT: reduced heat conductivity and higher strength of foam concrete.

1 cl, 1 dwg