Abstract
The paper concerns selected environmental problems of crushing devices operation. The main scope was to determine the dust emission level of hammer, cone and jaw crusher, operating in plant conditions. There were registered dust emissions for these crushers along with determination their distributions. There were also introduced indices that enable us to estimate environmental burdensome of particular crusher, with taking into account technological conditions (comminution ratio, throughput). It appeared that the jaw crusher, despite the highest dust emission level, turned out to be of less environmental nuisance, considering its throughput and achieved comminution ratio.
Highlights
AND METHODOLOGYBeneficiation processes of raw materials, and mineral aggregates in particular, are mostly based on the application of crushing and classification operations, together with feed washing and de-dusting
It can be seen that the highest level of dust emission was obtained for the jaw crusher, the lower for the impact crusher, and the lowest for the cone crusher which, in comparison with the jaw crusher was almost as much as twice lower
Dust emission for the cone crusher was on the most stable level, while the highest variations of dust level were reported for the impact crusher
Summary
Beneficiation processes of raw materials, and mineral aggregates in particular, are mostly based on the application of crushing and classification operations, together with feed washing and de-dusting. NAZIEMIEC of crushing (or grinding) have a negative impact on the environment and humans, mainly due to a heavy dust pollution, that are generated during comminution. This is one of the factors affecting the quality of air and the resulting deterioration in the living conditions of inhabitants near mines and processing plants. A very significant factor, reducing the dust emission in processing plants, is the water spraying. At the same time it is quite effective factor reducing dust emissions
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