iron ore pellet plant flow chart

Source: Prepared by the authors with data from Tuck and Virta . The iron ore pelletizing process consists of three main steps: Balling process: the green pellet is the rolled pellet without any thermal process. It is obtained under strict control of moisture and has a spherical shape and diameter of 8–16 mm;

tc.) Town and Country Planning/ Development authority classific tion.The proposed capacity of the iron ore pellet plant is 2.4 MTPA. The plant site will be comprised of a Grinding & Filtration, Mixing & Balling and Pelletizing building, water reservoir, Storage of raw material n belt along with other service facilities

The quality requirements of pellet, such as physical, chemical and metallurgical specifications, depend on each ironmaking furnace and those requirements influence the operation of the iron ore pelletizing plant.

There are two main technologies/processes for producing iron ore pellets: The Grate-Kiln System and the Straight Grate System. The First Grate Kiln System pellet plant was installed in 1960. The plant used iron ore concentrate as input and produced superior iron ore pellets for blast furnace and direct reduced iron feed.

The final use of iron ore pellets in ironmaking reactors requires minimum mechanical proper-ties. Pellets must withstand tumbling and falling during transport and mechanical loading inside the reactors due to the charge weight. In order to increase its mechanical strength, green pellets are thermally treated in the induration process.

Table 2. Quality specification of iron ore pellets. 1Basicity in this context is the ratio between the weight percent of CaO and SiO2. prevent the collapse of pellets during the initial stages of heating, when a large volume of gas generated by water vaporization tends to crack the pellets.