JSW Improvements in BOF Lance by Slagless Clean Up Technology

摘要

The BOF (Basic Oxygen Furnace) is most important furnace in steel production, with 53% of the total amount of steel produced through BOF route around the world. JSW Steel Limited, India produces 12 million tons steel per year, composed of 03 steel shops facilities in one location. Steel Melting Shop One (SMS-I) has 03 BOF converters with 135 tons capacity each. The SMS-II has 04 BOF converters with 180 tons capacity each and SMS-III with 1×160 ton EAF Furnace. India's largest integrated complex intend in the near future to build SMS-IV and will reach 16 million tons of steel per year. Continual improvement in Technology and optimization of process has made JSW grow from 0.8 million tons to 12.0 million tons in very short span of 19 years. The other side, common problems during operations of BOF happens like: Jam's formation of blowing lance and converters mouth with dirty skirt. Efforts are made every day to avoid and reduce these effects and increase productivity and reduce costs. This present paper, the focus was enhanced blowing lance operation, reduction of lance jam and converters mouths jam of BOF shops. A new concept of lance tips was introduced for the same to improve more stable conditions during long life lance tips called "Slagless Clean Up cartridge". The target of this work is shown new conditions to reach like: increase cartridges life, reduce jams around lance and mouth contribute for stable operations.