METHOD OF OBTAINING OF POROUS CONSTRUCTION MATERIAL Russian patent published in 2015 - IPC C04B38/00 C04B35/14 

FIELD: mining.

SUBSTANCE: in the method of obtaining of porous construction material based on natural silicon oxide containing raw materials - diatomite, comprising the mixing of diatomite and sodium hydroxide and water until obtaining of silicate mass, its drying, milling and heating up to the buckling temperature in the range from 650 to 900°C with the subsequent cooling of the material down to the ambient temperature, clay or loam is added to silicate mass, the mix is prepared at the following mass ratios: clay or loam to diatomite from 0.053 up to 1.5, sodium hydroxide to the total content of clay or loam and diatomite from 0.08 up to 0.40, the content of water in the mix to the total content of clay or loam, diatomite and sodium hydroxide from 0.1 up to 0.3, and drying of mix is conducted until achievement of constant weight.

EFFECT: improvement of compression strength with keeping of main properties of the material.

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