METHOD TO DECREASE DENSITY OF NITRATE IN PRODUCTS WITH THE HELP OF A GASIFYING AGENT Russian patent published in 2005 - IPC

FIELD: chemical and petrochemical industries.

SUBSTANCE: the invention is dealt with a method to decrease of a density of ammonium nitrate in products. The method includes production of a gasifying agent in the form of a water-insoluble solid carbonaceous compound capable to help evolution of a gas at a chemical reaction, and production of a product out of ammonium nitrate. The water-insoluble solid substance having the average diameter of particles of no less than 40 micron is introduced in the ammonium nitrate product having the acid. At that the value of pH is between 2 and 5. At production of granules (pellets) from the ammonium nitrate product a granular product of an ammonium nitrate with the lowered density is formed. The invention also is dealt with granular products out of ammonium nitrate produced by this method and an explosive composition a containing a granular product out of the ammonium nitrate produced by this method. The offered method ensures an increase of volume of self-contained pores and accordingly a decrease of the volumetric bulk density.

EFFECT: the invention ensures an increase of volume of self-contained pores and accordingly a decrease of the volumetric bulk density.

20 cl, 2 ex, 2 tbl