METHOD OF PRODUCTION OF CARBON-CONTAINING BRIQUETTES Russian patent published in 1998 - IPC

FIELD: technology of briquetting of carbon-containing fines and slimes, particular, production of coal and coke briquettes; applicable in production of briquettes used as fuel for burning in domestic and industrial furnaces, for coking, in metallurgical, chemical and food industries. SUBSTANCE: the offered method includes mixing of crushed carbon-containing material with binding agent based on solution of tall pitch, pressing of briquettes from mixture with pressure of, at least, 5 MPa. Binding agent includes, at least, 0.5 wt.% of 1-80% solution of oxidized tall pitch in organic solvent or its mixture with aqueous solution of derivative of sulfonic acid. Mixing is carried out with concurrent removal from mixture of liberating volatile substance. After pressing, briquettes are held for, at least, 1.5 h at ambient temperature. Solution of derivative of sulfonic acid is used in form of solution of sodium salt of methylenenaphthalene sulfonic acid, or lignosulfonate. Solvent is used in form of hydrocarbons or lignosulfonate. Solvent is used in form hydrocarbons or alcohol, or ketons, or acetic ester, or their mixtures with boiling temperatures of 30-253 C and melting points from minus 130 to plus 6.6 C. EFFECT: higher efficiency. 3 cl, 2 dwg