METHOD FOR PRODUCTION OF EXTRA PURE ALUMINIUM Russian patent published in 1997 - IPC

Abstract RU 2095450 C1

FIELD: refining of aluminium, particularly, production of extra pure aluminium. SUBSTANCE: zonal melting is carried out by heating of bullion. Vacuum degassification is carried out within 6-72 h at 680-1000 C, it is followed by controlled cooling. Said melting takes place in 3-9 zones in automatic regime, heating rate being 0.1-5.0 C/min, cooling rate being 0.08-0.80 C/min. EFFECT: improved efficiency of the method. 1 tbl, 1 dwg

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RU 2 095 450 C1

Authors

Kozarenko G.A.

Monakov A.A.

Krajnov S.I.

Dates

1997-11-10—Published

1995-07-07—Filed