Controlling Slag Buildup

The formation of slag in the melting of ferrous metals is inevitable. Three important physical characteristics of slags:

melting point
viscosity
‘wetting’ ability

Slag should remain liquid at temperatures likely to be encountered during melting, molten metal treatment or molten metal handling.

Viscosity of slag needs to be such that removal from the metal surface is easy. At the same time, a fluid slag of low melting point promotes good slagging reactions and prevents buildup in channel furnace throats and loops as well as coreless furnace sidewalls.

REDUX EF40L Briquettes

REDUX EF40LP 1 lb. bags

Slags must have a high interfacial surface tension to prevent refractory attack (wetting) and to facilitate their removal from the surface of the molten metal.

Redux – controls and minimizes buildup in pouring ladles, melting furnaces, pressure pour furnaces and magnesium treatment vessels with minimal to no adverse effects on refractory linings. Click here to learn more about Redux.

Want to learn more about controlling slag? Click here for a Whitepaper on Control of Slag and Insoluble Buildup in Ladles, Melting and Pressure Pour Furnaces by Rod Naro, President, ASI International.

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