Cellular Vibropneumatically Compacted Corundum. Part 2. Features of Physical and Mechanical Vibration Treatment Processes of Alumina-Foam Polystyrene Mixtures

Vibration treatment of an alumina-foam polystyrene mixture depends on the speed of propagation of elastic waves within it. With a reduction in mixture average density velocity and wavelength decrease, and the degree of vibration absorption increases. Vibration parameters are determined for effective compaction of these mixtures: amplitude, vibration frequency and treatment duration. In order to maintain constancy of lightweight corundum product dimensions, excluding cutting and grinding, it is necessary to control mixture bulk weight according to developed calibration schedules. The raw material firing regime should be carried out taking into account dynamics of the combustible additive pyrolysis process that avoids raw material destruction under the influence of decomposition or combustion products.