WEATHERING OF COAL- EXPERIMENTS, MEASUREMENT METHODS & PREVENTION: A SURVEY

During transportation and stockpiling, coal is in contact with air for periods of time that may exceed 6 months. During this time, reaction with oxygen in the presence of water, sunlight and possibly elevated temperatures may take place. The resulting weathered coal suffers some alteration in its technological properties This paper describes what is weathering with reference to coking coal, why it is important to understand the coal weathering. In this paper we try to summaries how different study conducted in lab scale and natural weathering setup.how they monitor the coal weathering.The different technique to mointor coal weathering also dscussed.some effort also put up to summarise the ways to reduce coking coal weathering.