Evaluating exposure of population to dust, with consideration of components and dispersion contents of industrial discharges from enterprise extracting and processing mineral raw materials (discussion)
The article covers results of study concerning disperse content of solid components of discharges from main dustgenerating technologic operations in extraction and processing of mineral raw materials (pouring ore to conveyor, drying with combustion gas in fluid-bed, pouring of end product, sorting ore on riddle, drying on vibration dry and cool device, etc). Findings are that fractions under 10 and 2.5 micrometers approach 50% in general structure of dust discharges. Maximal share of low-disperse dust enters ambient air from vibraion dry and cool devices, riddles and pouring places. Exceeded reference values for acute and chronic exposure are registered on TSP and PM10 at a sanitary protection zone border and in the nearest living area points - that can forecast intolerable risks for health of population exposed and necessitate instrumental confirmation of the detected jeopardy level.