2　Terms

2.0.1　Pelletizing

The process of producing pellets by adding binder and additives to raw material，pelletizing，screening，drying，preheating，high-temperature roasting and cooling.

2.0.2　Hearth and side layer bin

The bin used to lay the hearth and side material into traveling grate equipment.

2.0.3　Upper steel structure

The steel structure above pin roll discharger in the shaft furnace.

2.0.4　Bottom steel structure

The steel structure under pin roll discharger in the shaft furnace.

2.0.5　Grate bar cleaning device

The device used to clean the dust on the surface of grate bar in roasting machine.

2.0.6　Furnace housing

The upper steel structure of traveling grate machine frame.

2.0.7　Upper housing

The steel housing on the upper grate.

2.0.8　Spading plate

The device fixed at the end of grate discharger，used to discharge the iron ore pallets.

2.0.9　Pallet frame assembly

The combination of circular cooler，pallet frame，side rail，support rail，chain and so on，used for bearing and rotating transport of the iron ore.