Monday, October 1, 2012


Ladle Refining Furnaces are a proven technology used for producing alloy steel, desuplhurizing liquid steel and for improving the productivity from a steel plant. Ladle Refining is a post-melting treatment that is after melting in either the Induction Melting Furnace or Electric Arc Furnace

Whenever LRF is installed online, liquid metal is transferred from the main melting source to the LRF at a nominal tapping temperature and either Argon/Nitrogen is purged from the bottom apart from arcing (using electrodes) on the top to bring about homogeneity of liquid metal composition and temperature. Fused lime/CaSi is added to the liquid metal to reduce sulphur and bring it within acceptable limits. And temperature is raised for the next casting operation.
Ladle Refining of liquid metal is a proven technology to produce high quality steel. Ladle Refining Furnaces (LRFs) are used to desulphurise steel, remove other impurities and hold the molten steel for casting operations. Without LRFs, higher tap temperatures are normally required from steel making furnaces due to heat losses during transfer and casting of liquid metal. LRF facilitates higher productive time to the melting furnace besides producing better quality of steel at lower cost.

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