FUEL BRIQUET AND METHOD OF FABRICATION THEREOF Russian patent published in 1999 - IPC

FIELD: solid fuel technology. SUBSTANCE: fuel briquet based on dried mixture of ground solid fuels with 10-32% of binding agent based on petroleum processing wastes (oil sludge and/or exhausted machine oil) additionally contains components selected from the following group: lignosulfonate or molasses (2-7%), dehydrated activated sludge (3-8%), clay (3-10%), and paraffin or slack wax (1-6%). Ground solid fuels are: wood sawdust, peat, dehydrated manure, dehydrated fowl dung, coke or coal fine, coal sludge, lignin, or their mixtures. Fabrication of briquets includes mixing ground solid fuels with binding agent, briquetting the mixture at pressure 1 to 30 Mpa, and drying briquets at temperature no lower than 300 C. According to invention, binding agent components, prior to be mixed with solid fuel, are agitated or heated to 60-80 C, or agitated at heating to 60-80 C. In addition, solid fuel can be preliminarily mixed with half amount of oil sludge or exhausted machine oil, after which the rest of binding agent will be added. EFFECT: increased strength. 5 cl, 6 ex