| Productivity Improvement of Large Blast Furnace (4554 m3) at Jindal Steel and Power Angul, India Ritesh Mishra1; Nadeem Khan1; Damodar Mittal1; 1JINDAL STEEL & POWER, Angul, India; PAPER: 386/Iron/Regular (Oral) SCHEDULED: 14:25/Wed. 30 Nov. 2022/Arcadia 1 ABSTRACT: Jindal Steel and Power (JSP) is a major steel producer in India, commissioned its blast furnace with a size of 4554 m3 in May 2017 at Angul in the state of Odisha, India. This large Blast Furnace has achieved productivity of 3.16 t/m3 of working volume/day by producing more than 12000 tons of hot metal in a day. In this paper, productivity improvement of large blast furnace were illustrated by the two aspects, raw materials preparation and blast furnace process optimization. Firstly in terms of raw materials preparation, producing highly reducible sinter, improving sinter physical properties, optimization of coke quality, improving pellet properties, optimization of burden mix, reducing slag volume and Secondly in terms of blast furnace operation, improving BF gas utilization by controlling furnace parameters at both upper and lower part, the upper adjustment include raw material charging, batch weight, BLT hopper changing frequency and lower adjustment include the control of blast kinetics by blast temperature, humidification control, high top pressure, oxygen enrichment, efficient coal injection, top temperature, optimizing silicon content in hot metal, controlling heat loss and achieving higher permeability inside the cylindrical structure of blast furnace. References: [1] Dong-dong ZHOU, Shu-sen CHENG, Ying-sheng WANG and Xi JIANG, Production and Development of Large Blast Furnaces from 2011 to 2014 in China, 2015 ISIJ International, Vol. 55, No. 12, pp. 2519–2524 [2] Maarten Geerdes, Oscar Lingiardi and Peter Warren, New Perspective on Blast Furnace Optimization and Upset Prevention, 2018 AISTech Conference Proceedings PR-374-035. [3] S R Sengupta, B B Majumder, S K Bhattacherjee and S C Sarkar Challenges of large Blast Furnaces – The Indian Story, Steel Tech January-2016. |
