Abstract:
There are no Iron ore mininhg activities and very few Iron extraction activities in
Sri Lanka due to high electricity consumption and non availability of proper survey
results of those ore deposits. Main components need for Iron melting are Iron ore.
Limestone and Coke. The Hematite (Fe203.XH20) percentage in Dela Iron ore is
88.71%, Si02 percentage is 7.18% and AI2O3 percentage is 1.07%. Blast furnace is the
most suitable method to extract Iron in Sri Lanka considering the cost and the
necessary resources. Cupola furnace has the same mechanism of the blast furnace
which has been used for laboratory scale Iron melting . By changing the composition
and firing condition, high quality pellets were produced. While extracting Iron,
huge amount slag formation is the main draw back in Iron making. By comparing
degree of magnetism, degree of reduction, apparent porosity, apparent specific
gravity, bulk density and water absorption, high quality pellets were produced. The
optirruzed carbon percentage for pelletizing with optimized in duration temperature
were determined using above tests. Physical, chemical errors and further
improvement of this procedure have been discussed in this research.
Citation:
Wisumperuma, K.B., Hewawasam, H.P.S.S., Weerakoon, W.M.B.M.B., Rohitha, L.P.S., & Guluwita, S.P. (2018). Production of high quality iron pellets by changing the composition and firing conditions. In A.M.K.B. Abeysinghe & G.V.I. Samaradivakara (Eds.), Proceedings of International Symposium on Earth Resources Management & Environment 2018 (pp. 61-68). Department of Earth Resources Engineering, University of Moratuwa.