METHOD OF HYDROPHOBIZATION OF AMMONIUM PERCHLORATE Russian patent published in 2006 - IPC C06B21/00 C06B29/22 C06B45/32 

FIELD: chemical industry; petrochemical industry; methods of hydrophobization of ammonium perchlorate.

SUBSTANCE: the invention is pertaining to the process of production of the blasting explosives. The invention presents the method of hydrophobization of the ammonium perchlorate including the treatment of ammonium perchlorate with the oil-wetting agent - methyltrichlorosilane vapor-phase in two stages. At the first stage ammonium perchlorate is mixed with ammonium bicarbonate, and the gained mixture is ground at simultaneous feeding of the oil-wetting agent. At the second stage the produced ground mixture is averaged and mixed with ammonium bicarbonate and treat with the oil-wetting agent. Process of hydrophobization at the second stage is completed at pH of the gaseous products of no less than 6. The invention allows to reduce consumption of the oil-wetting agent.

EFFECT: the invention ensures reduction of consumption of the oil-wetting agent.

2 dwg, 3 tbl