Unburned waste coal flotation agglomeration

Abstract

The article presents the results of a study of high-agglomeration unburned waste coal flotation with the development coal-mineral briquette. The technology is that the process of removing moisture is carried out without external supply of heat or coolant and heat generated due to stirring with a dehydrating component (lime dust - waste from the production of burnt lime CaO not less than 70%) due to the exothermic reaction, and heating binder, which is used as the prepared coal resin by heat generated by the implementation of the chemical dehydration. Combining chemical processes of dehydration hydration of lime materials, curing mixture molding processes allow to obtain chemically bonded agglomerated material strength, satisfying the requirements of metallurgical production. The optimum temperature and time parameters of the process and the equity ratio of lime dust, coal tar and dissected initial moisture content of waste coal flotation in achieving their high strength.