Exothermic compositions

Details Exothermic compositions Exothermic compositions

1987-04-07

1988-08-30

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524545, 524546, 524430, 524433, 524441, C21B 700

Patent

active

047678003

ABSTRACT:
An exothermic composition comprises a particulate readily oxidizable metal such as aluminium, magnesium or silicon and an organic fluorine-containing compound, and usually an oxidizing agent for the readily oxidizable metal. The preferred organic fluorine-containing compound is polytetrafluoroethylene. The composition may also contain a binder, a particulate refractory material, refractory fibres and/or organic fibres. The composition may be used in the casting of molten metal, either in particulate form or as a preformed shape such as a sleeve or board, to cover or surround molten metal in the feeder of a casting mould or in the head or head box of an ingot mould.

REFERENCES:
patent: 4031046 (1977-06-01), Tiza
patent: 4566518 (1986-01-01), Kawamura et al.

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