Coal Mine Conveyor Belt Combustion Products Identification and Analysis.

摘要

The aim of this program was to develop a reliable and meaningful basis for assessing certain safety aspects,namely fire and,in particular,toxicity hazards of articles employed in underground coal mining operations. This investigation was centered on the thermal oxidative degradation of 'pure'ingredients used specifically in the formulation of conveyor beltings. A conveyor belt consists of the basic polymer,fiber (carcass) and the various additives necessary to impart the desired physical characteristics. During the current program four groups of materials were investigated. Comparing the toxic product formation by the various formulation ingredients it was apparent that certain materials such as e.g.,neoprene,tris (dichloroporphy) phosphate and Dacron were definitely more hazardous than equivalent compositions. Similar findings were reported for actual conveyor beltings. These results showed clearly that systematic investigations could lead to a substantial reduction,if not complete elimination,of the hazards arising from formation of oxidative thermal decomposition products by materials introduced into underground mines.