METHOD OF PREPARING GRANULAR POROUS AMMONIUM NITRATE Russian patent published in 1999 - IPC

FIELD: technology of producing inorganic substances, more particularly manufacture of explosive materials. SUBSTANCE: method comprises initially introducing aqueous solution of aluminium sulfate to concentrated ammonium nitrate melt and subsequently adding aqueous suspension of pore-forming additive containing chalk, alkylbenzene sulfonate (sulfonol) or monoalkylphenol polyglycol ether, or dialkylphenol ether or sulfanyl acid sodium salt (dispersant). EFFECT: improved quality of granular porous ammonium nitrate, greater strength of granules and greater bulk weight. 2 cl, 1 tbl