Drying of the microsphere for the manufacture of heat-insulating dry buildingmixes

Abstract

A promising area for the production of heat-insulating dry building mixes is the use of the microsphere of thermal power plants, that will promote the formation of thermal insulation, strength, chemically and thermally stable properties of products. To dry the microsphere, a filtration method was proposed which consists in filtering the heat agent through the porous structure of the material in the direction "material - perforated grate". The investigated results of the heat agent temperature and velocity effect on the drying process duration of microsphere and obtained values of heat transfer coefficients from heat agent to microsphere particles α = 35 ÷ 72 W/m2.K allow to calculate energy consumption for the implementation of the drying process and to choose optimal technological parameters for it intensification.