Grate or industrial furnaces and make it effective stacked solid fuel combustion components. Entire grate consists of two parts of the framework and grate. Grate usually between cast iron pieces assembled with the sheet to maintain the necessary ventilation slits, and often at the bottom grate can adjust the air volume set of separated plenum to allow air to enter through the gap layer combustion ash fuel burn after slag discharged by manual or mechanical methods. Grate fixed, mobile, reciprocating, vibration and lower feed type and other types.