Singh R.,Abhijeet Group |
Gorai A.K.,Birla Institute of Technology |
Segaran R.G.,Bokaro Steel Plant
International Journal of Environmental Technology and Management | Year: 2013
The aim of this study is to couple several analytical techniques in order to carefully undertake physical, chemical and mineralogical characterisations of LD steel slag to determine its feasible utilisation in commercial brick manufacturing. The characterisation results of LD slag showed that the pH and electrical conductivity of the samples were very high indicating high percentage of lime presence and presence of ionic form of various salts, respectively. The specific gravity and bulk density of LD slag samples were found to be high in comparison to fly ash samples. The EDS X-ray micro analysis showed that major elemental compositions of LD slag samples are O and Ca by weight. The XRF analysis showed that the major components of the LD slag samples are CaO, FeO and SiO2. The differential thermal analysis result showed that an endothermic peak at 450.7°C in the DTA curve was found. The compressive strength of the brick samples type A (Fly ash - 35% + LD slag - 30% + Gypsum - 5% + Quarry dust - 20% + Lime - 9.75% + CaCl2 - 0.25%) was found to be more than 100 kg/cm2 after 14 days of curing which is sufficiently higher than that of the strength of a normal red clay bricks (50-70 kg/cm2) and may be its feasible replacement for commercial purposes in civil jobs. Copyright © 2013 Inderscience Enterprises Ltd.
Mohanty S.S.,Bokaro Steel Plant
Journal of the Institution of Engineers (India), Part MM: Metallurgy and Material Science Division | Year: 2011
Steel plays a vital role in the development of any modern economy. India's first Prime Minister Nehru believed that no country can be politically and economically independent unless it is highly industrialized and has developed its resources to the utmost. The government committed itself to the development of public sector steel industries. China's crude steel production for November 2010 was 50.2 mMt, an increase of 4.8% compared to November 2009. Elsewhere in Asia, Japan produced 9.0 mmt of crude steel in November 2010, 1.4% higher than November 2009. South Korea's crude steel production for November 2010 was 5.2 mMt, 16.4% up compared to the same month last year. SAIL's Corporate Policy envisages to almost double its production by 2012 from the present level of 14.3 Mt. Other major steel producers across the world, such as, Arcelor Mittal and Posco have set up their bases in India and are in the process of setting up steel plants in Jharkhand, Orissa and Karnataka.
Mitra S.,Steel Authority of India Ltd. SAIL |
Saha S.K.,Steel Authority of India Ltd. SAIL |
Kumar R.S.,Steel Authority of India Ltd. SAIL |
Gangadaran M.,Steel Authority of India Ltd. SAIL |
And 4 more authors.
MPT Metallurgical Plant and Technology International | Year: 2012
An expert-system guided heating control system has been developed for the belltype annealing furnaces of the line No. 1 cold rolling mill at Bokaro Steel Plant. The integrated automation system is based on hierarchical control concepts, with a level-2 rulebased expert system selecting the most appropriate heating cycle for a given set of steel coils. It supervises the annealing operation as per the guidelines of the expert system. The application has rendered significant improvement in plant performance in terms of productivity, quality and energy saving.
Mitra S.,Steel Authority of India Ltd |
Saha S.K.,Steel Authority of India Ltd |
Kumar R.S.,Steel Authority of India Ltd |
Gupta P.,Steel Authority of India Ltd |
And 6 more authors.
Steel Times International | Year: 2011
A close loop Expert System for the bell annealing furnace Line # 2 of Bokaro Steel Plant, one of the premier integrated steel plans of the Steel Authority of India Limited (SAIL), has been developed in-house jointly by the Research & Development Centre for Iron & Steel (RDCIS). Commissioned in January 2009, this advanced process control system has improved the performance of annealing line #2 in terms of quality, productivity is up 3% and specific energy consumption down 7% while annealing protective gas consumption has fallen by 4.1Mm3 a year. The Programmable and Logic Controller (PLC) system controls furnace heating for the annealing cycle selected by the Expert System, by regulating the gas/air valves. The system has allowed a benchmark control accuracy of ∓5-10°C under normal operating condition.