Abstract
Abstract In order to follow the interdependence between characteristics of raw materials and properties of low bulk density bricks several sample series on forsterite basis were made. The starting powders we employed in the brick production were dead-burned magnesite and dunite having different physico-chemical properties: impurity content, granulation, crystal structure and other relevant parameters. Using the cold and vibro pressing and sintering techniques bricks of total porosity 44% and 70% were produced. The bricks contained predominantly macropores having various shape: spherical, irregural and elongated. The relationship obtained between powder granulation, mineral and chemical composition and thermal conductivity, gas permeability, thermostability, mechanical and other properties were discussed.
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