Blast furnace repairs, relines and modernizations
Abstract
Bethlehem Steel's Burns Harbor Div. operates two 89,000-cu ft blast furnaces, D and C, built in 1969 and 1972. These furnaces have been in the forefront of blast furnace performance since they were blown-in. To maintain a credible operation throughout the past 25 years their performance has been improved continuously. Production was increased approximately 3%/year while fuel rate decreased 1%/year. This presentation summarizes the early repairs, relines and improvements that have sustained and enhanced the furnace's performance. The fourth reline of both furnaces will be discussed in detail. As part of the 1991 reline of D furnace its lines were improved and modern penstocks installed. The bosh, tuyere jacket, hearth jacket and both cast floors were replaced. The furnace now has a larger hearth making it easier to control and, liquid level is no longer a problem when pulling the wind to shut down. The new cast floor with its increased trough length has much improved separation of slag from iron and lowered refractory consumption. Since the cast floors on D furnace were changed, there has been a reduction in accidents and absenteeism. This may be related to the change in work practices on the new cast floors. The 1994more »
- Authors:
-
- Bethlehem Steel Corp., Chesterton, IN (United States). Burns Harbor Div.
- Publication Date:
- OSTI Identifier:
- 7136851
- Report Number(s):
- CONF-9409223-
Journal ID: ISSN 0021-1559; CODEN: IRSEA5
- Resource Type:
- Conference
- Journal Name:
- Iron and Steel Engineer; (United States)
- Additional Journal Information:
- Journal Volume: 71:9; Conference: 1994 Association of Iron and Steel Engineers (AISE) annual convention, Cleveland, OH (United States), 19-21 Sep 1994; Journal ID: ISSN 0021-1559
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 01 COAL, LIGNITE, AND PEAT; BLAST FURNACES; LINING PROCESSES; LINERS; MODIFICATIONS; PRODUCTIVITY; REPAIR; SERVICE LIFE; FURNACES; LIFETIME; 010500* - Coal, Lignite, & Peat- Products & By-Products
Citation Formats
Carpenter, J A, Swanson, D E, and Chango, R F. Blast furnace repairs, relines and modernizations. United States: N. p., 1994.
Web.
Carpenter, J A, Swanson, D E, & Chango, R F. Blast furnace repairs, relines and modernizations. United States.
Carpenter, J A, Swanson, D E, and Chango, R F. 1994.
"Blast furnace repairs, relines and modernizations". United States.
@article{osti_7136851,
title = {Blast furnace repairs, relines and modernizations},
author = {Carpenter, J A and Swanson, D E and Chango, R F},
abstractNote = {Bethlehem Steel's Burns Harbor Div. operates two 89,000-cu ft blast furnaces, D and C, built in 1969 and 1972. These furnaces have been in the forefront of blast furnace performance since they were blown-in. To maintain a credible operation throughout the past 25 years their performance has been improved continuously. Production was increased approximately 3%/year while fuel rate decreased 1%/year. This presentation summarizes the early repairs, relines and improvements that have sustained and enhanced the furnace's performance. The fourth reline of both furnaces will be discussed in detail. As part of the 1991 reline of D furnace its lines were improved and modern penstocks installed. The bosh, tuyere jacket, hearth jacket and both cast floors were replaced. The furnace now has a larger hearth making it easier to control and, liquid level is no longer a problem when pulling the wind to shut down. The new cast floor with its increased trough length has much improved separation of slag from iron and lowered refractory consumption. Since the cast floors on D furnace were changed, there has been a reduction in accidents and absenteeism. This may be related to the change in work practices on the new cast floors. The 1994 reline of C furnace incorporates those improvements made on D furnace in 1991. In addition, C furnace will have high-density cooling which is expected to double its campaign from 6 to 12 years, without interim repairs.},
doi = {},
url = {https://www.osti.gov/biblio/7136851},
journal = {Iron and Steel Engineer; (United States)},
issn = {0021-1559},
number = ,
volume = 71:9,
place = {United States},
year = {Thu Sep 01 00:00:00 EDT 1994},
month = {Thu Sep 01 00:00:00 EDT 1994}
}