Pelletization

A three million ton per year Pellet Plant based on Lurgi Straight Grate process was commissioned at Mangalore in 1987. Later on the capacity is increased to four million ton per year.
The pellets produced in this plant are exported for use in Blast Furnaces as well as in the production of Direct Reduced Iron. The iron ore concentrate for Pelletisation is fed through a roll press to improve the Blaine Index. The process of pelletisation involves mixing of iron ore concentrate with limestone and bentonite as additives. Separate dry grinding mill for grinding lime stone and bentonite are provided in the pelletisation process. A small proportion of coke/coal is also used as additive for improving the physical and metallurgical properties of pellets. The mixed material is fed to pelletising discs of 7.5 meter dia for production of green pellets which are screened on roller screens to remove the undersize and oversize materials.


Pelletisation

	A three million ton per year Pellet Plant based on Lurgi Straight Grate process was commissioned at Mangalore in 1987. Later on the capacity is increased to four million ton per year. The pellets produced in this plant are exported for use in Blast Furnaces as well as in the production of Direct Reduced Iron. The iron ore concentrate for Pelletisation is fed through a roll press to improve the Blaine Index. The process of pelletisation involves mixing of iron ore concentrate with limestone and bentonite as additives. Separate dry grinding mill for grinding lime stone and bentonite are provided in the pelletisation process. A small proportion of coke/coal is also used as additive for improving the physical and metallurgical properties of pellets. The mixed material is fed to pelletising discs of 7.5 meter dia for production of green pellets which are screened on roller screens to remove the undersize and oversize materials.


The sized pellets are fed to an indurating machine of 492 M2 grate area through a double deck roller screen to remove undersized and oversized material. The green pellets are dried, preheated, fired at high temperatures and cooled in the indurating machine. The pellets, after screening to remove the undersized material, are conveyed to the storage yard.