Construction method, principle and technical realization of equivalent briquette based on intelligent inversion

Abstract

Based on the actual occurrence state of typical loose coal, the similar relationship between the strength of formed coal and the strength of raw coal was established with the firmness coefficient of raw coal as the link. At the same time, the method of laboratory formed coal equivalent to on-site loose coal was comprehensively established by using the relationship between the porosity of prepared briquette and the porosity of raw coal. Based on the determination of raw coal parameters such as composition, moisture content and particle size gradation, the key "construction parameters" of briquette, namely forming pressure, forming time and forming moisture, were selected to form a series of forming processes and schemes, and forming mechanism of briquette prepared by loose and soft coal in laboratory was analyzed. The intelligent inversion model of briquette parameters based on beetle antennae search-evolutionary support vector machine (BAS-ESVM) was established. Through database establishment and model inversion, the results have shown that the intelligent model can accurately inverse the briquette forming pressure, forming time and forming moisture under the given condition of on-site soft coal strength and porosity. The strength and porosity of briquette prepared under this parameter were highly consistent with the on-site coal parameters, which verified the correctness and reliability of the model.