Introduction:
Minaslax (Perlite Ore) is used in many Ferrous and Non-ferrous foundries as a “slag
coagulant”. It is used in ladle topping where granulated perlite ore is
added to molten metal pouring ladles. The ore reacts with the slag in the ladle
to allow easy removal of the slag layer.
Expanded perlite forms an efficient insulating blanket
in cases where it is desirable to maintain a metal
temperature in the ladle.
When it is introduced during ladle filling, a gentle
rolling motion is produced which cleanses the metal
by coagulating impurities. In addition, ladle- lining
life is increased by virtue of a vitreous residual
coating left on the refractory by the perlite.
Primary Benefits summarized:
- Extraction of metal impurities
- Aids in desulphurization of ferrous metals.
- Inhibits re-oxidation at the surface of molten
metals.
- Minimizes casting defects.
- Causes no noxious gases or dust.
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