10-10-2014, 12:13 PM
Abstracts: Adani power use vertical medium speed grinding roller mill for pulverization of coal in 75µ particles. In present the company uses Indonesian coal which is called bumio. It is costly. This type of coal contains more calorific value as compared to Indian coal. India has a coal anthracite, bituminous, and lignite. That permits for same efficiency compared to bumio, use more Indian coal. The Indian coal is hard and heavy sizes. The Indian coal contains more amount of ash. The company uses Indian coal in other mills and problem gets arises like corrosion of roller, damage of roller, change inclination angle of roller and many more. We just found solution which is our knowledge, and we will work on it. Our solution is as below: • Increase speed of motor. • Increase inlet temperature of coal. • Change roller design (change material-hard cast steel) • Improve design of classifier.