METHOD OF PREPARATION OF CELLULAR BUILDING MIXES BASED ON GYPSUM-CONTAINING MINERAL BINDER AND DEVICE FOR ITS REALIZATION Russian patent published in 1998 - IPC

FIELD: civil engineering. SUBSTANCE: preparation is carried out continuously; in the process of agitation the mix components are influenced by activating cavitation impulses. Cavitation impulses of force are excited by counter impacts of jets of air and solution of air-entraining admixture at a pressure of 0.5 to 6.5 atm and components of cellular mix agitated at a rate of 14.5 to 47.5 m/s. Continuous-action mixer for preparation of cellular building mixes has a cylindrical body with the upper loading and lower unloading branch pipes, and a drive shaft. The vertical drive shaft carries a distributing plate with a guide inclined ring and horizontal brackets with vertical pins forming a spider; nozzles used to feed impact jets of air and solution of air-entraining admixture are installed slantingly in opposite directions on the inner surfaces of the body vertical wall and bottom. EFFECT: enhanced strength and sound-insulating indices of products, reduced thermal conductivity and volume-weight. 4 cl, 3 dwg