Technologies for Improving Blast Furnace Operating Performance Oct03

Technologies for Improving Blast Furnace Operating Performance...

Technologies for Improving Blast Furnace Operating Performance A blast furnace (BF) is an investment in the future. Hence it is necessary that there is the proper dimensioning of all equipment, systems and components as well as incorporation of technologies which assure the desired production and quality so that improved performance of the blast furnace can be achieved. This is particularly true when blast furnace goes for capital repairs. During capital repairs incorporation of technologies for the improvement of blast furnace operating performance also meet the new demands placed on the performance of the blast furnace, personnel safety, lower maintenance requirements and environmental compliance. A key challenge for blast furnace operators has always been to assure a continuous and reliable supply of hot metal for the steel melting shop at uniform quality and at the lowest possible costs. Any interruption in the production of hot metal can lead to potential standstills in the downstream production and processing facilities. Downtime must be kept to a minimum while the blast furnace campaign life must be extended for as long as possible. Fluctuations in blast furnace operating parameters must be avoided for uniform hot metal quality, which is only possible through the application of proper technologies as well as sophisticated automation and process control solutions. There are several technologies (Fig 1), which when adopted greatly improve blast furnace operating performance and increase its efficiency both with respect to productivity and fuel consumption. This results into improved hot metal production rate per unit of volume of blast furnace and reduced consumption of BF coke. Some of the major technologies are described below. Fig 1 Technologies for improving BF operating performance Increase in furnace internal volume By using advanced technologies for furnace refractory lining and furnace cooling, it is possible...