REDUCING THE EMISSION OF HARMFUL GASES INTO THE QUARRY ATMOSPHERE
Keywords:
Quarry atmosphere, thermal drilling, blasting operations, harmful gases, neutralization, water–fuel emulsion, carbon monoxide, nitrogen oxide, oxygen balance, ventilation.Abstract
This article highlights methods for reducing harmful gases released during thermal drilling and blasting operations in quarry conditions. It is noted that when using thermal drilling rigs powered by oxygen–kerosene fuel, explosive hydrogen mixtures may form at high temperatures. To counter this, methods such as injecting neutralizing agents with cooling water, installing neutralization devices after dust collection systems, and using water–fuel emulsions are recommended. According to the research results, the use of aqueous emulsions up to 12% does not affect drilling productivity and significantly reduces the toxicity of exhaust gases. In blasting operations, it is shown that the oxygen balance of explosives, the composition of the rock, and the blasting technology influence the amount of harmful gases produced. To reduce harmful gases, selecting explosives with an oxygen balance close to zero, enhancing ventilation, and adding neutralizing additives to stemming are recommended as promising approaches.
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