AISI Direct Steelmaking Program. Annual technical report for year ending November 30, 1991

Technical Report · Wed Jan 01 04:00:00 EST 1992

DOI:https://doi.org/10.2172/10123530· OSTI ID:10123530

Aukrust, A

The Direct Steelmaking Program has completed the third year of research and development since cost-share funding was provided by the Department of Energy. The physical chemistry programs conducted by Carnegie Mellon University (CMU) and the Massachusetts Institute of Technology (MIT) have been completed. A pilot plant has been constructed and successfully operated at Universal, Pennsylvania, and construction of a new, two-zone vessel pilot plant has been completed and trial operation is underway. The success of the pilot plant operation coupled with the development of process models involving reaction rates, heat-transfer and fluid-flow rates, and mass and energy balances has led to a basic study of a 350,000 tonne per year demonstration plant that gives promise of being a low capital and operating cost alternative for ironmaking as compared to the coke oven, blast furnace process. It has the further advantages of ease of startup and shutdown, lower energy consumption, and modularity so that capacity can be adapted to need. The physical chemistry programs at CMU and MIT studied fundamental reactions among ore, coal, flux, slag, metal droplets, and the liquid metal bath. Work at CMU centered on slag foaming studies, coal devolatilization, dissolution of hematite and wustite pellets in bath smelting slags, reduction of FeO in slag by char, extent of reverse or depostcombustion reactions in postcombustion gases, and developing an overall smelting model.

• Research Organization: American Iron and Steel Inst., Washington, DC (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FC07-89ID12847
• OSTI ID: 10123530
• Report Number(s): DOE/ID/12847--3; ON: DE92008640
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303
36 MATERIALS SCIENCE
360101
ALLOYS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
CONTROL
DEVOLATILIZATION
DOCUMENT TYPES
EFFICIENCY
ENERGY BALANCE
ENERGY EFFICIENCY
ENERGY SOURCES
ENERGY TRANSFER
EQUIPMENT AND PROCESSES
FLOW RATE
FOSSIL FUELS
FUELS
FURNACES
HEAT TRANSFER
IRON ALLOYS
IRON BASE ALLOYS
MANUFACTURING
MASS BALANCE
MATERIALS
MATHEMATICAL MODELS
OXIDATION
PERFORMANCE TESTING
PREPARATION AND FABRICATION
PROCESS CONTROL
PROGRESS REPORT
SMELTING
STEELS
TESTING
THERMOCHEMICAL PROCESSES