METHOD OF PREPARATION OF ANHYDROUS MIXTURES FOR WATER-FILLED EXPLOSIVE Russian patent published in 2002 - IPC

FIELD: production of industrial water- filled explosives on base of ammonium nitrate; mining industry. SUBSTANCE: method of production of water-filled explosive containing thickening agent, solid combustible additive and ammonium nitrate consists in mixing the components before loading them in well; thickening agent is ground and treated with the aid of water repellent before adding it to composition. Cross-linking agent may be also introduced in composition which is preliminarily ground and mixed with ground solid combustible additive and ground ammonium sulfate or their mixture. EFFECT: enhanced water resistance of water-filled explosive when its is used in flooded wells due to quick and smooth thickening of anhydrous mixture at retained physical stability of explosive during extended period of time. 7 cl, 1 tbl, 3 ex