Pelletized Iron Ore for Transportation
What is Pelletization?
The process of pelletization enables converting Iron Ore Fines into “Uniformed Sized Iron Ore Pellets” that can be charged into the blast furnaces or for Production of Direct Reduced Iron (DRI).
Pellets are uniform size, with purity of 63%- 65% contributing to faster reduction and high metallization rates.
Pellets with their high, uniform mechanical strength and high abrasive strength increase production of sponge iron by 25% to 30% with same amount of fuel.
Advantages of Iron Ore Pellets Over Sized Iron Ore:
The process of pelletization enables converting Iron Ore Fines into “Uniformed Sized Iron Ore Pellets” that can be charged into the blast furnaces or for Production of Direct Reduced Iron (DRI).
Pellets are uniform size, with purity of 63%- 65% contributing to faster reduction and high metallization rates.
Pellets with their high, uniform mechanical strength and high abrasive strength increase production of sponge iron by 25% to 30% with same amount of fuel.
Advantages of Iron Ore Pellets Over Sized Iron Ore:
- Iron ore pellets are superior to iron ore lumps in the subsequent iron making processes such as Blast furnace, DR furnace etc.
- Iron ore pellets with a nominal 64- 67% Fe, uniform porosity and better size help in faster reduction and higher metallization rates than the conventional iron ore lumps.
- The inherent higher mechanical strength and abrasion resistance of pellets enhance the production rate of sponge iron by approx. 20% under identical operating conditions.
- Iron ore pellets are of spherical shape with a size range of 9-16 mm.
- Iron ore pellets are not vulnerable to degradation during transportation due to their high abrasion resistance.
![Picture](/uploads/1/0/6/2/106221155/published/iron-pellet-01_2.png)
Pelletizing Facility Description
The Iron Ore Pelletisation facility can be broadly grouped into four sections as under.
1 Iron Ore Pellet feed and additives storage, proportioning and mixing section
2 Green balling section
3 Indurating Furnace section
4 Iron Ore Pellet product stacking and reclaiming section
Pellet feed is basically the iron ore concentrate with a minimum of 64% Fe, ground to 100% minus 100 mesh, with a Blaine index of ~1800.
Additives are limestone and / or dolomite, bentonite and coal / coke breeze, all ground to minus 200 mesh.
While limestone and / or dolomite are added to control the basicity as needed in the downstream iron making processes, bentonite is used as a binder and coal / coke breeze is a solid fuel supplement.
Requirement of pellet feed and additives is as under:
The Iron Ore Pelletisation facility can be broadly grouped into four sections as under.
1 Iron Ore Pellet feed and additives storage, proportioning and mixing section
2 Green balling section
3 Indurating Furnace section
4 Iron Ore Pellet product stacking and reclaiming section
Pellet feed is basically the iron ore concentrate with a minimum of 64% Fe, ground to 100% minus 100 mesh, with a Blaine index of ~1800.
Additives are limestone and / or dolomite, bentonite and coal / coke breeze, all ground to minus 200 mesh.
While limestone and / or dolomite are added to control the basicity as needed in the downstream iron making processes, bentonite is used as a binder and coal / coke breeze is a solid fuel supplement.
Requirement of pellet feed and additives is as under:
![Picture](/uploads/1/0/6/2/106221155/iron-pellet-02-png_2.jpg)
Green Balling Section:
Mixed material from the mixer is conveyed to surge bins in the balling section and fed by weigh-feeders to the pelletizing discs. Green pellets discharging from the discs are conveyed to a double deck roller screen ahead of indurating machine. The oversize and undersize green pellets are re-circulated and on-size green pellets fed to the straight travelling grate type indurating furnace.
From <http://www.vtcorpindia.com/iron-ore-pelletization/>
The formation of raw iron ore pellets, also known as pelletizing, has the objective of producing pellets in an appropriate band of sizes and with mechanical properties high usefulness during the stresses of transference, transport, and use. Both mechanical force and thermal processes are used to produce the correct pellet properties. From an equipment point of view there are two alternatives for industrial production of iron ore pellets: the drum and the pelletizing disk.
From <https://en.wikipedia.org/wiki/Pelletizing>
Mixed material from the mixer is conveyed to surge bins in the balling section and fed by weigh-feeders to the pelletizing discs. Green pellets discharging from the discs are conveyed to a double deck roller screen ahead of indurating machine. The oversize and undersize green pellets are re-circulated and on-size green pellets fed to the straight travelling grate type indurating furnace.
From <http://www.vtcorpindia.com/iron-ore-pelletization/>
The formation of raw iron ore pellets, also known as pelletizing, has the objective of producing pellets in an appropriate band of sizes and with mechanical properties high usefulness during the stresses of transference, transport, and use. Both mechanical force and thermal processes are used to produce the correct pellet properties. From an equipment point of view there are two alternatives for industrial production of iron ore pellets: the drum and the pelletizing disk.
From <https://en.wikipedia.org/wiki/Pelletizing>
![Picture](/uploads/1/0/6/2/106221155/iron-pellet-03-png_2.jpg)
Processed Taconite pellets as used in the steelmaking industry, with a US Quarter shown to scale.
From <https://en.wikipedia.org/wiki/Pelletizing>
From <https://en.wikipedia.org/wiki/Pelletizing>