Recent improvements in blast furnace operation at the Ahmsa Monclova Works
- Ahmsa/Hoogovens Technical Services, Monclova (Mexico)
Following the privatization of Altos Hornos de Mexico in Nov. 1991, four areas were selected to improve blast furnace performance and hot metal costs. These areas included: improvements of pellet quality; start of oil-gas coinjection; improved control of gas flow in the blast furnace; and start of monitoring program to predict the remaining life of the hearth of the major blast furnace. The efforts resulted in the following improvements in the first half of 1992: (1) Production level increased to 2.4 tonnes/cu meter/24 hr. Annual production record of blast furnace No. 5 (hearth diameter 11.2 meter), set in 1992, was 1,639 million tonnes. (2) Coke rates decreased by 60 kg/tonne, half of which was due to process improvements and the other half to injection of oil. (3) Silicon standard deviations decreased from 0.22% in 1991 to 0.20% in 1992. (4) Hot metal costs decreased by 10.6%. (5) The major reline of blast furnace No. 5 can be postponed by at least 1.5 years.
- OSTI ID:
- 6945200
- Report Number(s):
- CONF-9309280--
- Journal Information:
- Iron and Steel Engineer; (United States), Journal Name: Iron and Steel Engineer; (United States) Vol. 70:7; ISSN IRSEA5; ISSN 0021-1559
- Country of Publication:
- United States
- Language:
- English
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BLAST FURNACES
COKE
CONSUMPTION RATES
FUEL OILS
FUELS
FURNACES
LINING PROCESSES
LIQUID FUELS
OPERATION
OPTIMIZATION
PETROLEUM PRODUCTS
PRODUCTIVITY