METAL CUTTINGS PROCESSING METHOD Russian patent published in 1995 - IPC

FIELD: metallurgy. SUBSTANCE: metal cuttings are cleaned to have grease and cutting fluid residual share of 1.5 - 4.0 % and briquetted. Briquets heating is exercised in oxidizing atmosphere with oxygen share of 3 - 11 % under temperature of 700 - 900 C for 0.4 - 0.65 minute per 1 mm of briquet length. Due to sustaining conditions for carbon monoxide formation metal cuttings saturation with carbon up to 1 % and formation of carbide phase take place, that allows to decrease temperature of briquets smelting and decrease consumption of saturated pig-irons in the charge near twice as much. EFFECT: increased carbon share of briquets in the form of iron carbides, acceleration of their smelting during processing, decrease of metal smelting expenditures.