METHOD FOR PURIFYING ALUMINUM AND APPARATUS THEREFOR

WIPO Patent Application WO/2011/096170

A1

Disclosed is a method for purifying aluminum, which is capable of removing impurity components such as Zn and Mg in molten aluminum without requiring an agitation device and without extremely lowering the vacuum degree. The method for purifying aluminum is capable of minimizing the occurrence of a trouble caused by metal vapor. Also disclosed is a purification apparatus which is capable of carrying out the method. Specifically, elements having high vapor pressures are evaporated and removed from molten aluminum by heating the molten aluminum introduced into a furnace by arc discharge and maintaining the molten aluminum temperature at 700-1,000˚C and the average vacuum degree of the atmosphere in the furnace at 20-1,000 Pa.

WO/2021/145398	METAL PURIFYING METHOD AND METAL PURIFYING APPARATUS
JP2001294949	CONTINUOUS METHOD FOR VACUUM REFINING MOLTEN METAL AND APPARATUS THEREFOR

OSHIRO NAOTO (JP)
KAWAI KIYOFUMI (JP)
ASADA YASUTAKA (JP)
WATANABE HIRONORI (JP)

PCT/JP2011/000378

August 11, 2011

January 25, 2011

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DAIKI ALUMINIUM INDUSTRY CO LTD (JP)
OSHIRO NAOTO (JP)
KAWAI KIYOFUMI (JP)
ASADA YASUTAKA (JP)
WATANABE HIRONORI (JP)

C22B21/06; C22B9/02; C22B9/04; C22B9/20; F27B14/04; F27B14/06; F27B14/14; F27D11/08; F27D11/10

JPS60216177A	1985-10-29
JP2009108346A	2009-05-21
JPS6320421A	1988-01-28
JPS60254592A	1985-12-16
JPH0831570A	1996-02-02
JPS624815A	1987-01-10

MORI, Yoshiaki et al. (JP)
Woods Yoshiaki (JP)

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