Two kinds coal could be used for burning in chain grate boiler, including lump coal and blended coal.

1. Lupm coal size required The size of lump coal requires 6-25mm, and the total moisture is <12%.

2. Blended coal size required The size requirement of the blended coal is <50mm (not more than 30% for 6mm; no more than 25% for <30 and <3mm)

Showing our coal burning boilers pictures as following: