Abstract
A large proportion of the gases from the process units in the casting and furnace bays of ferroalloy plants enter the production facilities, where they form a complex aerodisperse system. The resulting aerosols pose a great danger to the operating personnel due to the presence of toxic and carcinogenic components. To develop emission prevention and elimination methods, the sources of industrial aerosol formation during silicomanganese production, particle size distribution and chemical composition of the dust sludge, the behaviour of the gas-dispersed system in the working area have been analyzed. Scanning electron microscope TESCAN VEGA3 with microanalytical attachment Oxford X-Act was used to study the morphology of dust particles sediment. It was established that the aerodisperse system of the shop atmosphere consists of condensation aerosol with submicron particles of manganese and silicon oxides and dispersion aerosol generated mostly at the transportation and loading of charge materials. The behaviour of particles of silicon and manganese oxides, forming a part of the condensed aerosol in the workshop atmosphere was considered. The motion parameters of particles of various chemical compositions simulating compositions of condensation and dispersion aerosols typical of the working area atmospheric aerosol system were calculated. Time and velocity characteristics of aerosol condensation particles for silicon and manganese oxides of 0.1; 1 and 5 microns in diameter are provided.
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