Potiyko L. Perfection production technology of heat-insulation materials on the base of granular blast-furnace slag for an industrial isolation

Object of the research: thermodynamics processes which take place at the hardening of forming mixture of porous heat-insulation material, аnd also structure forming processes of material which take place at the first heating. The aim of the thesis: scientific foundation perfection of porous heat-insulation materials production technology for an industrial isolation by a mixed method. Methods: standard methods of researches for determination of the developed heat-insulation material properties concordantly ДСТУ Б В. 2.7-38-95; determination of phase composition of raw material and new formations of materials structure was executed by methods differentially thermal and X-ray analyses, by the methods of light and electronic microscopy; the study of thermodynamics processes was conducted by calorimetry methods; reology properties of forming mixture were studied by standard and special methods, primary viscidity of foaming mass was determined by the method of falling marble, measuring of the resiliency module of forming mixture in the process of gasification was conducted by a low frequency ultrasonic resonance method. Theoretical and practical results: porous heat-insulation material production technology is improved for an industrial isolation on the basis of the ground granular blast-furnace slag; porous heat-insulation material composition is developed for an industrial isolation by the density of 360-400 kg/cub.m and durability of intermediate product 0,4-0,6 MPa; the mode of burning-out of wares is offered on the basis of results of differentially thermo analysis of porous heat-insulation material and nomogram of heat-insulation material layer thickness dependence from the temperature of energy carrier in heat-insulated pipelines is developed; optimum composition of hardening enhancer is certained the components of which is aluminium powder, caustic sodium and liquid glass, that allows to attain the necessary technological parameters of mixture forming. Novelty: porous heat-insulation material's production technology is improved for an industrial isolation, with assembling durability of 0,4-0,6 MPa on the early terms of solidifiability (20-25 minutes). Degree of introduction: job performances are inculcated at the JSC "NVO of "Trubolit" of Nikopol', where the isolation of pipeline part was conducted. The economic effect of 34,56 uah./cub.m is made due to the improvement of porous heat-insulation material's production technology. Offered technology is expediently to use on metallurgical and others enterprises, which use an equipment which works at enhanceable temperatures in technological processe.