METHOD OF COAL BRIQUETTING Russian patent published in 2018 - IPC C10L5/08 C10L5/02 C10L5/06 C10L5/30 C10L5/26 

FIELD: technological processes.

SUBSTANCE: invention discloses a method for coal briquetting, including drying with flue gases, crushing, heating of coal, pressing and cooling of the briquettes obtained, characterized in that the drying of the coal is conducted in three stages, in a first step, the feedstock is dried in a whirling flow to a moisture content of 5–23 %, in the second stage, the drying is combined with the process of crushing the feedstock to 1 mm, in the third – drying to a moisture content of 1.5–5 % is combined with transportation through a pipe made in the form of a coil, with simultaneous heating to 170–370 °C, then perform briquetting in a roll press at a pressure of 19–25 MPa for 5–7 s with the supply of superheated steam at a temperature of 105–130 °C in the pressor, cooling briquettes are carried out by spraying fine water on top of briquettes and blowing air from below, while simultaneously taking air to combustion in a heat and smoke generator.

EFFECT: technical result consists in simplifying the production technology, reducing costs and obtaining briquettes with good performance at the lowest cost.

1 cl, 1 dwg, 1 tbl