METHOD OF BRIQUETTING COAL SLACK AND INSTALLATION TO THIS END Russian patent published in 2009 - IPC C10L5/48 

FIELD: chemistry; metallurgy.

SUBSTANCE: coal slack is mixed with water-repellent admixture, selected from groups, including combustible wastes or residual products of petroleum processing, used oils, farm wastes or their mixtures, collected in a quantity, which will provide combustion heat in a solid state of briquette of net less than 20 MJ/kg. Mixture is subjected to mechanochemical activation with the value of power density 100-300 kW/m³ obtaining a granular mass or pulp, which is precipitated with the separation of the dense deposit, which is dried and pressed to obtain briquettes. Operation with dried slack is carried out with aspiration, with the return of the deposited furnace feed to the line for pressing, and in the activator and/or drier hot flue gases are supplied. Installation includes a slack bin, container-mixer for slack with a water repellant agent, connected through a vibration feeder with a grinder-activator, possibly a container for depositing slack, connection of the vibration feeder with a dosing unit with a drier, vibration feeder is also connected with the dosing unit with a roller press, device for supply to the grinder-activator and/or drier of hot flue gases with discharge of ash-laden gas to the device for aspiration with a filter and a feeder for the return of deposited furnace feed to the roller press.

EFFECT: decrease of losses and increase of production.

2 cl, 3 ex, 1 dwg