METHOD OF OBTAINING FOAM-GENERATOR FOR FOAM-CONCRETE CONSTRUCTIONS Russian patent published in 2014 - IPC C04B24/14 C04B38/10 C04B103/42 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of obtaining ampholytic surface-active substances on the basis of a protein-containing raw material and can be used in the process of production of foam-concrete and foam-concrete constructions. In the method of obtaining a foam-generator for the production of foam-concrete and foam-concrete constructions, including the hydrolysis of the protein-containing raw material in the presence of calcium hydroxide, calcium hydroxide is formed, when calcium oxide is introduced in a hydrolysed reaction mixture, the hydrolysis process is carried out in one stage in a reactor-hydrolyser, provided with high-speed stirrer and an external circular loop with a pump for 5-9 hours at a temperature of 110-132°C with the weight ratio of initial ingredients "feather wastes:water:calcium oxide", equal to 100 : (350-400) : (3.5-3.7), with pH of the lime-feather mass at the beginning of hydrolysis varying within the interval of 12.0-12.4, and at the end of hydrolysis in the interval of 7.5-7.7.

EFFECT: obtaining the foam-generator with high foam-generating properties, which are achieved both with the application of moderately mineralised water and alkaline highly hard lime water.

1 ex, 1 tbl