| Autor: |
Golinko, V. I., Luts, I. O., Yavorskaya, Ye. A. |
| Předmět: |
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| Zdroj: |
Scientific Bulletin of National Mining University; 2012, Issue 3, p98-101, 4p |
| Abstrakt: |
Purpose. To find ways of dusting control optimization by studying the aerodynamic state in an inclined shaft at various modes of ventilation during transport of manganese ore by a band conveyor. To study the laws of dust deposition intensity. Methodology. The methodology of the industrial researches of dust balance in an inclined shaft includes determination of air dust content in three points of the inclined shaft: above the transported material surface, under loose band of the conveyor and in the area between belt conveyor body and wall of the inclined shaft. Dust content of air was defined at the entrance into the inclined shaft and then after each 120 meters along the full length of the shaft. Determination of air dust content in inclined shaft was carried out by method of external filtration using AЭPO-4 aspirator with filter - AΦA-18 with subsequent weighing of dust on filter. Findings. The results of the research showed that air dust content in working passage increases from 1.3- 2.0 mg/m³ at the entrance into the inclined shaft to 6.3- 7.5 mg/m³ in lower part of the shaft. These results allow selecting the most optimal method of dust elimination from an inclined shaft. Removal of deposited dust requires additional costs and leads to secondary dust formation of deposited and dried dust. It is necessary to create means to avoid sticking of ore to the band and mechanized removal of spilled ore. In order to achieve that it is required to study physical-mechanical properties of manganese ore. Originality. The laws of dust formation under branches of the band conveyor depending on its length and season of the year were studied. Practical value. The study of dust deposition rates contributes to development of the ways and means of prevention of manganese ore sticking to the band. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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