DEVICE FOR PRODUCTION OF POROUS GRANULATED AMMONIUM NITRATE AND METHOD FOR PRODUCTION OF POROUS GRANULATED AMMONIUM NITRATE Russian patent published in 2012 - IPC C06B21/00 C01C1/04 C06B31/28 

FIELD: blasting.

SUBSTANCE: device to produce porous granulated ammonium nitrate comprises a drum, arranged as capable of installation as inclined relative to the horizontal line and as capable of rotation around its central axis, a feeder-batcher, a tray for supply of granulated ammonium nitrate into a loading neck of a drum and a receiving hopper. The drum is made with two internal longitudinal through cylindrical working cavities, is equipped with heat insulation along the side external surface and is arranged in a heat-protective jacket at the hollow shaft arranged as capable of supplying liquid coolant to walls of working cavities in counterflow relative to supply of granulated ammonium nitrate. The method for production of porous granulated ammonium nitrate consists in the fact that thermal treatment of granulated ammonium nitrate is carried out by means of its heating in a rotary drum to the temperature of 32.3 - 50°C, soaking at this temperature in a rotary drum for 0.5 - 5 minutes and soaking in a receiving hopper at the temperature of environment for 0.5 - 10 minutes.

EFFECT: invention provides for high efficiency, safety and ecological compatibility of a technological process.

8 cl, 7 dwg