Method for preheating scrap iron by pyrolysis of resinous residu

Details Method for preheating scrap iron by pyrolysis of resinous residu Method for preheating scrap iron by pyrolysis of resinous residu

1990-09-13

1993-02-16

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75958, 266145, C21B 300

Patent

active

051867400

ABSTRACT:
This method of preheating scrap iron mixed with plastic, rubber and resinous, ie organic, materials and intended for electric furnaces, in particular electric arc furnaces, is characterized by transforming the plastic, rubbery or resinous and like materials of organic nature present in the scrap iron, to advantageously eliminate them by a path able to produce thermal energy usable for preheating the scrap to be melted, said path consisting of pyrolysis in an environment fed both with the scrap to be melted and with said organic materials, the whole being previously shredded.

REFERENCES:
patent: 2943930 (1960-07-01), Proler
patent: 4264060 (1981-04-01), Twyman
patent: 4498523 (1985-02-01), Bowman et al.
patent: 4548651 (1985-10-01), Ramsey
patent: 4889556 (1989-12-01), Dighe

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