|
This short course is aimed primarily at the novice steelmaker but
will also be of interest to the practiced steelmaker. The objective
of the course is to cover the basic theory and applications of EAF
based steelmaking and will cover steelmaking chemistry, slag
chemistry and its affect on steelmaking as well as EAF technology
and the implementation of theory into practice. Topics covered in
steelmaking chemistry will include: the definition of steel
chemistry, oxygen control in EAF steelmaking, the effect of residual
levels on steel quality, alloying, sulfur removal,
de-oxidation/re-oxidation and the effects of dissolved gases on
steel quality.
The course will also address the basic fundamentals
of slags and their application to EAF steelmaking including : slag
fundamentals, the effect of slag chemistry on foaming properties,
slag/metal interactions and the use of computer tools to aid in
development of slag practices for EAF steelmaking. A review of EAF
operations coupled with a review of EAF technologies will be
presented to demonstrate how the theory has been implemented into
practice and will show how EAF technology has advanced over the past
25 years.
Introduction to EAF technology and Operations
Steelmaking Chemistry Part 1
Steelmaking Chemistry
Part 2
Slag FundamentalsSummation/closing remarks 1.
Introduction to EAF Operations· Review of basic reactions taking
place in the EAF· The importance of the carbon oxygen balance in
the EAF 2. Conventional Furnace Feed Materials· Steel grade
requirements· Scrap types for various steel grades· Fluxes - lime,
dolo-lime, fluorospar· Carbon feed materials· Alloys3. Review of
Conventional EAF Technologies· The EAF energy balance· The use of
oxygen in the EAF· The use of auxiliary fuels in the EAF·
Post-combustion in the EAF· The use of inert gases in the EAF·
Advances in EAF mechanical systems - EBT/OBT, quick swing roof·
Advances in EAF electrical systems - electrode regulation, high
reactance AC operations, DC operations, variable reactance
operations
|
