Coal mill pulverizer in thermal power plants | PPT
WEBNov 17, 2012 · The bowl mill uses a motor and gear system to rotate a bowl at 4065 rpm, grinding coal into a fine powder. Hot air enters to dry the coal while heavier debris falls out of the bowl. A grinding roller assembly applies pressure and can be adjusted, while vanes inside separate finer particles from coarser ones that are returned for further grinding.