METHOD OF FILTERING MATERIAL PRODUCTION Russian patent published in 2009 - IPC B01D39/00 B82B3/00 

FIELD: technological processes.

SUBSTANCE: water or gas sol that contains nanopowder on the basis of aluminium is pumped through holes of perforated membrane used as basis of filtering material, at that, nanofibers of aluminium oxide hydrate AlOOH are created in holes of filtering material perforation in preset amount. Nanopowder on the basis of aluminium is produced with electric explosion of aluminium wires at density of energy introduced in wires of 10-20 kJ/g in medium of inertial gas with air content of 2-5% from their total volume. Invention provides conditions for formation of amorphous or island oxide and oxynitride film with certain structure on surface of particles on the basis of aluminium, and this film promotes formation of maximum amount of AlOOH aluminium oxide hydrate nanofibers in hydrolysis of aluminium particles.

EFFECT: method improvement.

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