COMPOSITION OF BOTTOM-MOUTH STEMMING Russian patent published in 1997 - IPC

FIELD: mining industry; applicable in preparation of composition of bottom-mouth flame-suppressing stemming of blastholes designed for prevention of burning of blasthole charges, cooling explosion products in blasthole space down to loosing capability of igniting of methane-air mixture in outburst to gas-laden face space, neutralizing poisonous gases of explosion products and suppressing of suspended coal dust. SUBSTANCE: the offered composition of stemming of blastholes contains, mas.%: chloride of alkali or alkali-earth metal 10-20; oil products with boiling point of above 230 C 4-7; emulsifier forming water-in-oil emulsion 1.5-2.5; the balance, water. Emulsifier forming water-in-oil emulsion is used in form of esters of fatty acids and polyatomic alcohols. EFFECT: higher efficiency. 2 cl, 1 tbl