Improvement of the blast furnace operation by a new burden distribution control at Kakogawa Works of Kobe Steel
- Kobe Steel LTD., Hatano (Japan). Kakogawa Works
It became clear that a spire type central gas flow is required to maintain a stable and economical operation of the blast furnace. However, the gas flow is sometimes changed by the variation of particle size of burden material and coke layer collapse, as well as other causes. Therefore, the Center Coke Charging Method was developed to accurately control the center gas flow. At Kakogawa No. 2 (Inner volume 3,850m[sup 3]) and No. 1(4,550m[sup 3])blast furnaces, the commercial facilities which use this method were installed in August, 1988 and November, 1990. Since then, it has become possible to obtain a stable gas flow with a combination of the Center Coke Chargin Method and movable armor. Consequently, the blast furnace operation was remarkably improved and a low-coke-rate operation (298kg/t) with 123kg/t Pulverized Coal (PC) and 62kg/t oil, and a high pellet ratio operation (70%) was successfully achieved at Kakogawa No. 2 blast furnace. This paper describes the instrumentation used at Kobe Steel for blast furnace control.
- OSTI ID:
- 6382405
- Report Number(s):
- CONF-9303222-; CODEN: PIRCB9
- Journal Information:
- Proceedings, Ironmaking Conference; (United States), Vol. 52; Conference: 52. ironmaking conference, Dallas, TX (United States), 28-31 Mar 1993; ISSN 0099-6874
- Country of Publication:
- United States
- Language:
- English
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COKE
CONSUMPTION RATES
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PARTICLE SIZE
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