METHOD OF PRODUCING WATER-RESISTANT AMMONIUM NITRATE (AMMONIUM SALTPETER) Russian patent published in 2013 - IPC C01C1/18 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry and can be used in production of industrial explosives and prolonged-action fertilisers. Ammonium nitrate is ground while simultaneously mixing with water-repellent agents - stearates in amount of not less than 0.1 wt % and iron (III) compounds in amount of not less than 0.03 wt % with respect to iron. The stearates used are sodium stearate or ammonium stearate or zinc stearate or calcium stearate or a mixture thereof. The iron (III) compounds used are iron-ammonium alums or iron chloride or iron sulphate or iron oxide.

EFFECT: invention enables to obtain water-resistant ammonium nitrate which meets GOST 14702-79 requirements, and reduces power consumption and duration of the process.

3 cl, 1 tbl