FIELD: non-ferrous metallurgy; refining aluminum and its alloys from toxic admixtures and non-metallic inclusions, hydrogen, dissolved admixtures of alkali and alkali-earth metals.
SUBSTANCE: proposed method includes treatment of molten metal with flux containing halogenides of aluminum and alkali metals at mixing by mechanical agitator followed by separation of melt and slag; distance between lower boundary of melt and center of working part of agitator is equal to 0.5-0.6 of melt height. To enhance resistance of rotor, its revolutions are reduced to 200-300 rpm. Prior to introducing flux into aluminum melt, it is dried; consumption of flux is 0.5-0.6 kg per ton of melt.
EFFECT: increased productivity due to enhanced operational reliability, avoidance of idle time, low cost of process and low consumption of flux.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF REFINING ALUMINIUM AND ALUMINIUM ALLOYS | 2007 |
|
RU2370557C2 |
| METHOD TO REFINE ALUMINIUM AND ITS ALLOYS | 1992 |
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| METHOD OF PRODUCING ALUMINIUM OF THE SPECIAL PURITY | 1991 |
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| METHOD OF MODIFYING SILUMINS | 1995 |
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| REFINING PRACTICE OF ALUMINIUM AND ALUMINIUM ALLOYS IN SHIPPING LADLE | 2006 |
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| METHOD OF REFINING ALUMINUM MELTS TO REMOVE MAGNESIUM | 1997 |
|
RU2122597C1 |
| COPPER AND COPPER ALLOYS PURIFICATION METHOD (VARIANTS) | 2005 |
|
RU2307874C2 |
