ISSN 2594-357X
34º Seminário de Redução de Minério de Ferro e Matérias-Primas — Vol. 01 , num. 34 (2004)
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Abstract
The paper discusses the development and implementation of stamp charging technology at Tata Steel as a solution to the limitations of Indian coking coals, which are characterized by high ash, low rank, and poor coking properties. It presents the evaluation of various pre-carbonisation technologies, concluding that stamp charging offers superior coke quality, higher bulk density, and improved blast furnace performance compared to conventional top charging. The evolution of the technology at Tata Steel is detailed, including optimization of coal blends using imported, non-coking, and semi-soft coals to reduce costs while maintaining coke quality (CSR and CRI). Operational aspects such as coal cake stability, granulometry, moisture content, and stamping energy are analyzed, along with challenges like wall pressure and oven damage. Environmental improvements through gas cleaning and transfer systems are also highlighted. The study demonstrates that stamp charging reduces coke production cost, improves productivity, lowers coke rate in blast furnace operation, and provides flexibility in raw material usage, making it a highly effective and economical cokemaking technology.
The paper discusses the development and implementation of stamp charging technology at Tata Steel as a solution to the limitations of Indian coking coals, which are characterized by high ash, low rank, and poor coking properties. It presents the evaluation of various pre-carbonisation technologies, concluding that stamp charging offers superior coke quality, higher bulk density, and improved blast furnace performance compared to conventional top charging. The evolution of the technology at Tata Steel is detailed, including optimization of coal blends using imported, non-coking, and semi-soft coals to reduce costs while maintaining coke quality (CSR and CRI). Operational aspects such as coal cake stability, granulometry, moisture content, and stamping energy are analyzed, along with challenges like wall pressure and oven damage. Environmental improvements through gas cleaning and transfer systems are also highlighted. The study demonstrates that stamp charging reduces coke production cost, improves productivity, lowers coke rate in blast furnace operation, and provides flexibility in raw material usage, making it a highly effective and economical cokemaking technology.
Keywords
stamp charging, cokemaking, coal blend, blast furnace coke, pre-carbonisation technology
stamp charging, cokemaking, coal blend, blast furnace coke, pre-carbonisation technology
How to cite
Deshpande, D.P.; Krishnan, S.H.; Dash, P.S.; Haldar, S.K..
STAMP CHARGING TECHNOLOGY AT TATA STEEL,
p. 1093-1116.
In: 34º Seminário de Redução de Minério de Ferro e Matérias-Primas,
None,
2004.
ISSN: 2594-357X, DOI 10.5151/2594-357x-34Red-1093-1116
