XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 3669
CONCLUSIONS
This study aimed to produce high-quality pellets for direct
reduction processes using low-grade Indian chromite over-
burden samples. The research successfully produced pellets
that met recommended metallurgical standards by adjust-
ing factors like basicity, induration temperature, and time.
The findings revealed the ferruginous sample was rich in
iron and nickel, while the siliceous sample had moderate
iron and nickel content. The optimal pelletizing conditions
were determined for both samples. The analysis of different
phases showed the formation of hematite under optimal
conditions but increasing both the induration time and
basicity led to the formation of slag phases.
REFERENCES
Ammasi A., and Pal J. 2016. Replacement of benton-
ite in hematite ore pelletisation using a combination
of sodium lignosulphonate and copper smelting slag.
Ironmak. Steelmak. 43: 203–213.
Behera S. K., Panda S. K., Pradhan N., Sukla L. B., and
Mishra B. K. 2012. Extraction of nickel by microbial
reduction of lateritic chromite overburden of Sukinda,
India. Bioresour. Technol. 125: 17–22.
Bhaskar K. L., and Bhoi B. 2021. Iron and Nickel
Enrichment in Low Grade Chromite Overburden to
Produce Ferronickel Alloys. Trans. Indian Inst. Met. 74:
1321–1332.
Dwarapudi S., Tathavadkar V., Rao B. C., TK S. K., Ghosh
T. K., and Denys M. 2013. Development of cold
bonded chromite pellets for ferrochrome production
in submerged arc furnace. ISIJ Int. 53: 9–17.
Feng Z., Li B., Wei Y., and Zhou S. 2023. The Aggregation
and Growth of Ferronickel Particles During the
Reduction of Laterite Nickel Ore. J. Sustain. Metall.
9: 1099–1113.
Figure 15. CCS (C) &Porosity (D) vs Basicity at 1200 °C, 1250 °C and 1300 °C (20 min)
CONCLUSIONS
This study aimed to produce high-quality pellets for direct
reduction processes using low-grade Indian chromite over-
burden samples. The research successfully produced pellets
that met recommended metallurgical standards by adjust-
ing factors like basicity, induration temperature, and time.
The findings revealed the ferruginous sample was rich in
iron and nickel, while the siliceous sample had moderate
iron and nickel content. The optimal pelletizing conditions
were determined for both samples. The analysis of different
phases showed the formation of hematite under optimal
conditions but increasing both the induration time and
basicity led to the formation of slag phases.
REFERENCES
Ammasi A., and Pal J. 2016. Replacement of benton-
ite in hematite ore pelletisation using a combination
of sodium lignosulphonate and copper smelting slag.
Ironmak. Steelmak. 43: 203–213.
Behera S. K., Panda S. K., Pradhan N., Sukla L. B., and
Mishra B. K. 2012. Extraction of nickel by microbial
reduction of lateritic chromite overburden of Sukinda,
India. Bioresour. Technol. 125: 17–22.
Bhaskar K. L., and Bhoi B. 2021. Iron and Nickel
Enrichment in Low Grade Chromite Overburden to
Produce Ferronickel Alloys. Trans. Indian Inst. Met. 74:
1321–1332.
Dwarapudi S., Tathavadkar V., Rao B. C., TK S. K., Ghosh
T. K., and Denys M. 2013. Development of cold
bonded chromite pellets for ferrochrome production
in submerged arc furnace. ISIJ Int. 53: 9–17.
Feng Z., Li B., Wei Y., and Zhou S. 2023. The Aggregation
and Growth of Ferronickel Particles During the
Reduction of Laterite Nickel Ore. J. Sustain. Metall.
9: 1099–1113.
Figure 15. CCS (C) &Porosity (D) vs Basicity at 1200 °C, 1250 °C and 1300 °C (20 min)