Application of waste coal to the manufacture of heat-insulating materials

It was demonstrated that a waterproof material based on liquid glass can be obtained with the use of waste coal and a heat-insulating refractory material with enhanced physicomechanical properties can be prepared with the use of petrochemical industry wastes.     

Physicochemical studies of pyrophyllite of the Nikol’sk deposit

Elemental chemical analysis shows that pyrophyllite of the Nikol’sk deposit does not contain iron oxide. Due to the high content in pyrophyllite ore of pyrophyllite and diaspore (corresponding 80 and 4%) the amount of aluminum oxide within exceeds 30%, that will facilitate preparation of high quality acid-resistant materials.     

Using slurries from flotational coal enrichment in the production of heat insulation on the basis of intershale clay

Heat insulation may be produced from intershale clay and slurries obtained in flotational coal enrichment, without employing traditional materials. The thermal conductivity and density of the insulation produced are 0.20 W/(m °C) and 1200 kg/m³.     

Formation of the black core in high-speed firing of floor tiles

The results of studying the black core in high-speed firing of floor tiles and the methods for its prevention are presented. Translated from Steklo i Keramika, No. 8, pp. 30 – 32, August, 1999.     

Sintering quality of clay materials

The effect of montmorillonite on sintering of kaolin and kaolinite-montmorillonite argillaceous materials from East Kazakhstan is studied. It is established that the optimum quantity of the introduced montmorillonite (30%) intensifies the sintering of clay materials. Translated from Steklo i Keramika, No. 6, pp. 25 – 27, June, 1999.     

Effect of pyrophillite on the physicomechanical properties and acid resistance of acid-proof materials

It is established that introduction of pyrophyllite into the composition of ceramic mixes markedly improves the physicomechanical properties and acid resistance of acid-proof materials. The method of linear regression, used for optimizing the composition of ceramic mixes with respect to the physicomechanical properties of acid-proof materials has shown that the difference in model results from actual results, obtained in the course of an experiment, lies within the limits of model nonconformity.