Abstract
The steel industry, by its very nature, is highly energy intensive with many heating and cooling, melting and solidification cycles. Typically, the specific energy consumption of Indian steel plants is quoted in the range of 35–50 GJ/tcs, compared to 17–25 GJ/tcs quoted for steel plants in advanced countries. The present paper analyses the reasons for the low level of energy efficiency in Indian steel plants. Certain incorrect notions are placed in proper perspective. Amongst the various technological reasons, the poor quality of coking coal is identified to be the single most important factor for the energy inefficiency of Indian steel plants. The impact of use of good quality coal (10% ash) on the overall specific energy consumption is quantified.
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