Computer systems for controlling blast furnace operations at Rautaruukki
- Rautaruukki Oy, Raahe (Finland)
- Rautaruukki Oy Engineering, Oulu (Finland)
Energy accounts for a significant portion of the total blast furnace production costs and, to minimize energy consumption, both technical and economical aspects have to be considered. Thus, considerable attention has been paid to blast furnace energy consumption and productivity. The most recent furnace relines were in 1985 and 1986. At that time, the furnaces were modernized and instrumentation was increased. After the relines, operation control and monitoring of the process is done by a basic automation systems (DCS`s and PLC`s) and a supervision system (process computer). The supervision system is the core of the control system combining reports, special displays, trends and mathematical models describing in-furnace phenomena. Low energy consumption together with high productivity and stable blast furnace operation have been achieved due to an improvement in raw materials quality and implementation of automation and computer systems to control blast furnace operation. Currently, the fuel rate is low and productivity is in excess of 3.0 tonnes/cu meter/day, which is one of the highest values achieved anywhere for long-term operation.
- OSTI ID:
- 99582
- Journal Information:
- Iron and Steel Engineer, Vol. 72, Issue 8; Other Information: PBD: Aug 1995
- Country of Publication:
- United States
- Language:
- English
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