Exothermic lining for metallurgical purposes and method of making the same (US Patent 4,031,046, 1977)

Julianna Tisza received US Patent No. 4,031,046 on June 21, 1977, filed March 31, 1975. It was assigned to Tid Chemische-Technische Produkte GmbH.

The patent's abstract:

An exothermic lining material for metallurgical purposes comprises 40-60% of aluminium dross, 1-12% of fibrous filler which may be inorganic or a mixture of inorganic and organic materials, 3-6% of binder, such as a phenoplast and up to 1% of wetting agent. In order to make the lining exothermic it contains 7-25% aluminium powder and/or aluminium swarf, 3-15% iron oxide and/or manganese dioxide and not exceeding 6% cryolite. The lining may be made by a dry process in which flakes or pellets of the composition are pressed to a desired shape or by a wet process in which the aluminium dross is added to an aqueous preparation of the fibrous filler and wetting agent, whereafter the other components are added.

Where it was listed

• Asbestos, August 1977, in its patents department (the year's issues)