INNOVATIVE TECHNOLOGIES IN SEPARATION PROCESSES: RESEARCH OF THE GIS-52 INERTIAL GRINDER OPERATION WITH CONSIDERATION OF THE INFLUENCE OF THE AIR DUCT ON FRICTION AND WEAR

Abstract

The article presents the results of a study on the influence of the air duct on the operational efficiency of the GIS-52 inertial screen used in the production of construction materials. The relevance of modernizing the separation process to reduce energy consumption and increase equipment productivity is substantiated. A mathematical model describing the influence of the airflow on the coefficient of friction between the material and the screening surface is proposed. Experimental studies of screen wear are conducted under different air duct parameters. It has been established that optimization of the airflow allows to reduce the coefficient of friction by 18–22%, reduce sieve wear by 25–30%, and increase screen productivity by 15–20%. An innovative air duct design with a variable cross-section and airflow thermostabilization is proposed. The research results can be used in the design and modernization of screening equipment for the production of crushed stone, gravel and other construction materials.