CRYSTALLISER OF SEMI-CONTINUOUS ZONE MELTING Russian patent published in 2012 - IPC C30B13/00 B01D9/02 

FIELD: metallurgy.

SUBSTANCE: for execution of zone melting the unit on the basis of roller or belt crystalliser includes reservoir 2 with molten metal 1, rotary cooled roll 3 or moving closed belt, one or more heaters 6 located between the section on which roll 3 or belt contacts molten metal 1 and device 8 for removing crystalline layer and providing formation of one or more local melting zones lying on the generatrix of roll 3. Heaters 6 have the possibility of periodic stop of heating of crystalline layer for formation of alternating sections of crystalline layer with various content of impurity: enriched with impurity and purified. For final separation the crystalliser also includes device 9 for selective removal of crystalline layer from the specified sections of roll 3 or belt in periodic mode.

EFFECT: invention allows carrying out continuous process of cleaning or separation of substances with directed crystallisation processes on cooled surface and zone melting, which are combined in one and the same unit.

2 cl, 1 dwg