Monthly Archives: March 2013

What Causes Clinkers in Coal Fired Boilers?

clinker
Clinkers, or slag, are made up of elements and minerals found in coal which are non-combustible.  When burnt, they melt and fuse together, forming lumpy ashes.  For as long as we have operated coal boilers, clinkers have been a recurring problem, occurring in small stoves used for heating a home right up to giant commercial/industrial Continue Reading