METHOD OF OBTAINING SILICOKIESERITE BONDING MATERIAL Russian patent published in 2009 - IPC C04B9/02 

FIELD: construction industry.

SUBSTANCE: method of obtaining silicokieserite bonding material by mixing magnesium-containing production waste: powdered non-standard magnesite grade or serpentinite powder with strong sulphuric acid heated to 40°C in the ratio 1:1, by adding the decomposition of silica-containing addition and magnesium oxide to the obtained product in 'decomposition product : the above addition : magnesium oxide' ratio = 10:1-2:0.2-1.0 with further fine grinding. In the above method as silica-containing addition there can be used tripolite or filtered solid residue after being leached during 30 minutes with water heated to 90°C, at solid : liquid within 1:1-3 of the dried decomposition product, and from water phase, after the above leaching by means of magnesium sulphate crystallisation, drying and grinding there obtained is market product.

EFFECT: improving strength and water resistance at improving ecology owing to production wastes being used, decrease of energy consumption and increase of output of target product.

2 cl, 12 ex, 2 tbl