DEVICE FOR PRODUCTION OF POROUS GRANULATED AMMONIUM NITRATE Russian patent published in 2017 - IPC C06B21/00 

FIELD: mining engineering.

SUBSTANCE: device for producing porous granular ammonium nitrate includes a drum set at a small angle α to the horizon, with a hollow shaft, made with a jacket for heat carrier fluid and the possibility of circulation of the heat carrier fluid along the drum axis, a feeder-doser and a loading manifold for feeding granular ammonium nitrate into the drum, distribution nozzles, discharge hatch, discharge device with separate discharge of fractions, an external heat-shielding casing with an inspection hatch, exhaust devices for releasing air from the heat-shielding casing, and a sieve installed on the side of the discharge end of the drum and made in the form of a perforated ring having a discharge hatch of elliptical shape with a ratio of the bigger axis of the ellipse to a smaller one of 1.7-2.2 and an offset center of the ellipse relative to the axis of the drum is not less than the size of the ellipse on the smaller axis, and the drum is rotatable about its axis in two modes or in a rotating or swinging mode.

EFFECT: invention can be used in open and underground mining of ore and non-metallic solid minerals in the development of stratified, stockwork, vein deposits.

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