DOUBLE-PURPOSE FIRE-EXTINGUISHING POWDER Russian patent published in 2005 - IPC

FIELD: fire-fighting means, particularly compositions for extinguishing A, B, C and E class fires.

SUBSTANCE: fire-extinguishing powder comprises ammophos, waterproofing liquid and mineral or mineral mixture non-soluble in water. Mineral has real density of 2.6 g/cm³. Mineral contains not more than 5% of particles with dimensions exceeding 200 mcm and not more than 35% of particles with dimensions less than 40 mcm. Fire-extinguishing powder may comprise natural schungite with specific surface area of not less than 7000cm²/g used as active combustible liquid adsorbent.

EFFECT: increased fire-extinguishing powder throw distance, reduced cost, possibility to adsorb liquid combustible products, which results in reduced ecological damage caused by spillage thereof and prevention of repeated ignition.

2 tbl