Tsiupiashyk A. Energy saving technology for obtaining heat-insulating finely divided filler - hollow perlite microspheres

Thesis presents the results of development of energy-saving technology for production of fine grained aggregate - hollow micro-spheres of perlite. Hollow micro-spheres of perlite are produced by dehydration and swelling processes in the equipment with fluidized bed of inert carrier of volcanic water-containing glass - perlite. The detailed study of dehydration and swelling processes for perlite showed the influence of technological parameters of the heat treatment process on the quality indications of the produced hollow micro-spherical aggregate, and also determined the parameters for equipment with fluidized bed of inert carrier and the minimal necessary height of the layer of inert carrier for ongoing processes of dehydration and swelling of perlite particles. The experiments were performed using the experimental equipment with fluidized bed of inert carrier. The technological specifications of heat treatment of perlite for production of hollow micro-spheres were determined. The structures of furnace for perlite swelling with fluidized bed of inert carrier were calculated and designed; the standard equipment for utilizing in industrial line for production of hollow micro-spheres of perlite was calculated and selected. Energy-saving technology for production of hollow micro-spheres of perlite was developed. The commercial prototype of the new developed technology was mastered.