Ladle & Secondary Refining Technology Committee Activities
19–20 February 2014, Columbus, Miss., USA. Dean Lovewell, LSRTC papers chair, reviewed the LSRTC sessions for AISTech 2014. Additional session chairs were nominated, and session chair responsibilities were reviewed.
Kevin Cotchen and Heather Bryant will serve as roundup co-chairs to continue developing the Ladle & Secondary Refining Roundup format. Other LSRTC members on this roundup subcommittee include Greg Brasel, Kamalesh Mandal, Matt Hallam, April Pitts and Mike Callahan.
Jimmy Barrett, LSRTC education chair, gave an update on the 2014 Ladle Refractory and Secondary Steelmaking Training Seminar, to be held 6–9 October 2014 in Indianapolis, Ind., USA. Nucor Steel–Indiana will serve as the host plant, and Gerry Gillen will be the keynote speaker.
Pallava Kaushik solicited support from the LSRTC members to participate in the 2015 Clean Steel Symposium in Budapest, Hungary, which will be held in September 2015.
A roundtable discussion was held, in which the following topics were reviewed:
Producing steel in an EAF with less than 50 ppm nitrogen.
Percentage of nitrogen in DRI.
Co-jet burner gas.
Efficient slag killing/steel deoxidation.
Clean steel slag practices.
Usage of carbide in a can.
Alloying practices: at tap vs. open tap.
The LSRTC met 3 October 2013, Charleston, S.C., USA. Dean Lovewell, LSRTC papers chair, reviewed the abstracts submitted for AISTech 2014. Thirty-three papers were selected, as well as session topics. The LSRTC has scheduled six sessions, including joint sessions with the Metallurgy — Steelmaking & Casting Technology Committee (MSCTC) and the Refractory Systems Technology Committee (RSTC). Nine LSRTC members were selected as session chairs. Additional LSRTC members will be asked to participate.
The format for the Ladle and Secondary Refining Roundup update is complete, and Kevin Cotchen, Kamalesh Mandal and Larry Wolfe will help secure plant statistics. Nucor Corp. and Steel Dynamics Inc. have submitted their data.
Jimmy Barrett reviewed the Ladle Refractory and Secondary Steelmaking Training Seminar, which had 76 attendees. The 2014 training seminar will be held in Indianapolis, Ind., USA, on 6–9 October 2014, with a tour at Nucor Steel–Crawfordsville (tentative). The LSRTC met with the RSTC to review this year’s seminar. Suggestions for expanding the seminar from two days to two-and-a-half days were discussed. Possible additional presentations would involve casting refractories, Technical Report No. 9, and an overview of United States Steel Corporation’s refractory programs. Barrett, education chair for both committees, will develop a new program outline for next year’s seminar.
The LSRTC met on 12–14 February 2013 in Birmingham, Ala. A tour of CMC Steel Alabama provided the group with a look at the DC EAF, ladle metallurgy furnace and caster. Jon Ridgeway, manager, meltshop, led the extensive tour of the meltshop. The 2013 Ladle and Secondary Refining Best Paper Award will be presented to Debdutta Roy, P.C. Pistorius and R.J. Fruehan for their paper entitled, “The Effect of Silicon on Desulfurization of Al-Killed Steels.” This award will be presented during the LSRTC meeting at AISTech 2013 in Pittsburgh, Pa., on Monday, 6 May. An update on the 2013 Ladle Refractory and Secondary Steelmaking Training Seminar was provided by Jimmy Barrett, LSRTC education chair. This training seminar will be held on 30 September–3 October 2013 in Charleston, S.C. Nucor Steel–Berkeley will serve as the host plant, with Jeff Powers, steelmaking manager, as the keynote speaker.
The Ladle & Secondary Refining Technology Committee (LSRTC) met in Jacksonville, Fla., following AIST’s Ladle Refractory and Secondary Steelmaking — A Practical Training Seminar on Thursday, 4 October 2012. Greg Brasel, LSRTC chair, presented the AISTech 2013 Call for Papers session schedule that Sunday Abraham, papers chair, has developed. The Call for Papers includes joint sessions entitled, “Inclusion Engineering” and “Clean Steels.” This latter symposium will consist of five scheduled sessions at AISTech 2013 in Pittsburgh, Pa. The Ladle & Secondary Refining Award for Best Paper will be finalized by 1 November by the selection subcommittee. Also discussed was the Ladle & Secondary Refining Roundup, which needs to populated by producer members. The Continuous Casting Technology Committee (CCTC) will be approached to help complete this survey. Helmut Oltmann, LSRTC APB chair, presented a list of secondary refining parameters to start developing the LSRTC’s APB module. The 2013 Ladle Refractory and Secondary Steelmaking Seminar will expand on the processing aspects in ladle refining. The next LSRTC meeting will be on 13–14 February 2013 with a possible tour of U. S. Steel – Fairfield Works’ steelmaking operations.
The Ladle & Secondary Refining Technology Committee (LSRTC) met on Tuesday, 8 May in Atlanta, Ga. The LSRTC officers for 2012–2013 will be Greg Brasel, chair; Kamalesh Mandal, vice chair; Sunday Abraham, papers chair; Eugene Pretorius and Helmut Oltmann, APB co-chairs; and Jimmy Barrett, education chair. The Ladle & Secondary Refining Best Paper Award was presented to Pallava Kaushik and Colleen Lyons for their paper entitled, “Inclusion Characterization of Titanium Stabilized Ultralow-Carbon Steels — Impact of Oxygen Activity at Deoxidation.” Brasel requested that each committee member participate in populating the Ladle & Secondary Steelmaking Roundup, which will serve as a basis for the future APB Secondary Steelmaking Module.
Barrett reviewed the 2012 Ladle Refractory and Secondary Steelmaking — A Practical Seminar, which will be held on 1–3 October in Jacksonville, Fla. Gerdau Jacksonville will serve as the host plant. The next LSRTC meeting will be on Monday, 1 October from 2 to 5 p.m., where an APB update will be given. On Thursday, 4 October, an AISTech 2013 Call for Papers meeting will take place from 8 a.m. until noon.
The Ladle & Secondary Refining Technology Committee (LSRTC) and the Metallurgy — Steelmaking & Casting Technology Committee (MSCTC) met in Arlington, Texas, on 25–26 January 2012 with a tour of Gerdau Midlothian steelmaking facilities. Both committees reviewed the 2011 Steel Industry Fatalities Report, followed by a safety roundtable discussion. Committee papers chairs Kamalesh Mandal, LSRTC, and Lamine Fadiga, MSCTC, discussed their respective session schedules for AISTech 2012. The committees have two joint sessions scheduled for Tuesday, 8 May, during AISTech. Greg Brasel, LSRTC vice chair and roundup chair, presented a Ladle & Secondary Refining Roundup format that the LSRTC will complete and plans to publish along with the Continuous Caster Roundup in the July 2012 issue of Iron & Steel Technology. Jimmy Barrett, LSRTC education chair, presented the 2012 Joint Ladle Refractory and Secondary Steelmaking — A Practical Training Seminar program outline. This joint committee seminar will be held 1–3 October 2012, with Gerdau Jacksonville as the plant host.
This joint meeting’s topic was clean steel practices. There were six presentations: “SEM Inclusion Analysis as a Process” by Helmut Oltmann, Nucor Steel–Berkeley; “Steelmaking Practices to Improve Cleanliness of Ti-Stabilized Ultralow-Carbon Grades” by Scott Story, U. S. Steel Research; “Steel Cleanliness: Calcium Treatment Evaluation at No. 2 Steel Producing at ArcelorMittal Indiana Harbor USA” by Lamine Fadiga, ArcelorMittal USA; “Development and Application of Clean Steel Technologies” by Chad Clark and Taylor Robie, Gallatin Steel; “Calcium Modification of Alumina and Spinel Inclusions in Aluminum-Killed Steel” by Chris Pistorius, Carnegie Mellon University; and “Steel Cleanliness Evaluation of Air-Melt, ESR and VAR Steels” by Peter Glaws, The Timken Co. The next LSRTC meeting will be Tuesday, 8 May, and the next MSCTC meeting will be Monday, 7 May, both at AISTech 2012 in Atlanta.
The Ladle & Secondary Refining Technology Committee (LSRTC) met in Cleveland, Ohio, on 24–25 October 2011. Chad Clark, LSRTC chair, welcomed the 12 members in attendance. The committee reviewed the 2011 Steel Industry Fatalities Report, which was followed by a safety roundtable discussion. Greg Brasel, vice chair, nominated the Best Paper Award selection committee for AISTech 2012 presentations. Ruth Engel, Refractory Systems Technology Committee (RSTC) education chair, reviewed the program outline for the 2011 Ladle Refractory Short Course, which had 95 attendees. The 2011 joint committee training conference will be a two-day program focusing on LMF and degassing operations. The 2012 Ladle Refractory and Secondary Steelmaking — A Practical Training Seminar will be held on 1–3 October 2012 in Jacksonville, Fla. Gerdau Jacksonville will serve as plant tour host. Jimmy Barrett, Allied Mineral Products Inc., was nominated to LSRTC education chair, and will be responsible for organizing future joint training seminars with the RSTC. The LSRTC will be working on a Secondary Steelmaking Roundup to be completed by 1 April 2012 for publication. This roundup will serve as a benchmarking foundation for the AIST Process Benchmarker program. Kamalesh Mandal, LSRTC papers chair, has developed at least two paper sessions for AISTech 2012 in Atlanta, Ga.
The LSRTC will have a joint committee meeting with the Metallurgy — Steelmaking & Casting Technology Committee on 25–26 January 2012 in Midlothian, Texas. Gerdau Midlothian will be the plant tour site.
The Ladle & Secondary Refining Technology Committee (LSRTC) met on 3 May 2011 in Indianapolis, Ind. Current LSRTC membership is at 53 members. The 2011 Steel Industry Fatality Statistics were reviewed, followed by a safety roundtable discussion. The LSRTC officer elections were confirmed: Chad Clark, chair; Greg Brasel, vice chair; Kamalesh Mandal, papers chair; Ruth Engel, education chair; and Kevin Cotchen, Ladle and Secondary Steelmaking Roundup chair. Engel reviewed the 2010 Ladle Refractory Short Course that attracted 93 attendees in Merrillville, Ind. The date for this year’s Ladle Refractory Short Course is 25–26 October 2011 in Cleveland, Ohio, with tours of ArcelorMittal Cleveland or Charter Steel. The LSRTC will look to expand its training seminar in 2012 to encompass ladle practices and inclusion engineering. This seminar will be expanded to two full days. Ruth Engel was nominated to be education chair for developing the seminar content. The AIST Process Benchmarker was reviewed and the committee determined to develop a Ladle and Secondary Steelmaking Roundup. The committee recognized Kevin Cotchen as this year’s Tadeusz Sendzimer Memorial Medal recipient. Bruce Barker presented the LSRTC Best Paper Award to Sunday Abraham, Shaojie Chen, James Asante and Colin D’Souza for their paper, “Hydrogen and Nitrogen Control and Breakout Warning Model for Non-Degassed Steel.” The next LSRTC meeting will be Tuesday, 25 October 2011 before the Ladle Refractory Short Course registration in Cleveland, Ohio.
On 1–2 March 2011, the AIST Ladle & Secondary Refining Technology Committee (LSRTC) met in Columbus, Miss., for their winter meeting. The meeting began with a tour of the entire Severstal Columbus LLC steel production facility. The Severstal Columbus facility produces 1.5 million tons of steel via EAF, LMF/degasser, CSP caster/tunnel furnace, hot mill, and also has the facilities to produce cold-rolled, hot-dip galvanized and galvannealled coil. An expansion project is under way to add another 1.5 million tons of production by the addition of an EAF, an LMF, another caster and reheat furnace, a push-pull pickle line and a second galvanizing facility. On 2 Mar 2011, the LSRTC held their business meeting. A summary of the tour was provided by Kamalesh Mandal, Severstal Columbus, and a question-and-answer session was held for any questions that may have remained among the members. A review was given by the LSRTC papers chair on the current status of the LSRTC sessions at AISTech 2011. The program is set, with two independent sessions and five joint sessions with the AIST Metallurgy — Steelmaking & Casting Technology Committee and the Continuous Casting Technology Committee. Following the AISTech discussion, plans for the 2011 Ladle Refractory Short Course were presented. After last year’s successful conference, the committee is looking forward to holding the training seminar in Cleveland, Ohio, in October 2011, with potential tour locations of ArcelorMittal Cleveland and Charter Steel Cleveland. The committee reviewed its selection for the 2011 Ladle & Secondary Refining Best Paper Award, which will be presented at AISTech 2011. The meeting concluded with an overview of the large amount of information available on AIST’s website, AIST.org. The next LSRTC meeting will be held at AISTech 2011 on 3 May 2011.
The Ladle & Secondary Refining Technology Committee (LSRTC) met during AISTech 2010 in Pittsburgh. Officers were elected as follows: Bruce Barker of Harsco Metals became chair, Ryan Jenkins of The Timken Co. became vice chair, and Greg Brasel of Carbide Industries became papers chair. The LSRTC then reviewed the successful AIST Ladle Refractory Short Course, held in Birmingham, Ala., in March 2010. The program will be repeated on 12–13 Oct 2010, in Merrillville, Ind., and will be co-located with the AIST Midwest Chapter kickoff dinner. The LSRTC honored the 2010 Ladle & Secondary Refining Best Paper Award winners, Eugene Pretorius, Helmut Oltmann and Thomas Cash, for their paper entitled, “The Effective Modification of Spinel Inclusions by Ca Treatment in LCAK Steel.” The meeting concluded with the presentation of a plaque to Jorg Peter, Cascade Steel, for his service as 2009–2010 LSRTC chair. The next LSRTC meeting will be co-located with the Ladle Refractory Short Course in Merrillville, Ind., on 12 Oct.
The AIST Ladle and Secondary Refining Technology Committee (LSRTC) met on 3 Mar 2010, in Birmingham, Ala., immediately following their inaugural Ladle Refractory Short Course. The meeting was also available via the Internet and teleconference for those unable to travel to Birmingham. Following introductions and reviews of the AIST Anti-Trust Guidelines and staff announcements, the members discussed any safety incidents occurring in the industry. The first item on the agenda was a review of the Ladle Refractory Short Course. The course was well-supported by the steel industry, with 63 attendees. The members briefly reviewed the attendee comments from the short course and gave the course a favorable review. With the limited number of presenters required to hold the short course, the committee plans on holding the short course in October 2010 in the Northwestern Indiana area. The course material will be slightly modified based on the attendee comments, but the overall structure will remain the same. The LSRTC then discussed the status of the their sessions for AISTech. The paper schedule was modified slightly to condense the program into three sessions: refractories, steel refining and degassing. The next meeting will be co-located with the Ladle Refractory Short Course in Northwest Indiana in October 2010.
The Ladle Design Subocmmittee of the Ladle & Secondary Refining Technology Committee (LSRTC) met on 1 Dec 2009, to finalize the ballot draft of Technical Report No. 9 — Specification for the Design and Use of Ladles. Middough Inc. hosted the meeting, which was also accessible via the Internet and conference call. The entire draft document was given a final review prior to being sent out for ballot draft for approval. Most of the modifications made to the document during this meeting were grammatical and organizational. In the “Approved Welding Materials” section, SFA-5.34 Nickel Alloy Electrodes for Flux-Cored Arc Welding was added to reflect the approval of the material by ASME as a new standard. For Tilt Linkages, SA 514 Plate Material was added as a material structurally similar to SA 517. In the “Welding” section of the document, information was inserted regarding welding contours to minimize the stress risers in welds during fabrication. Upon receipt and approval of the Design Example Appendix, the document will be sent to the LSRTC for review and comment. The next Ladle Design Subcommittee meeting will follow the review and comment period by the LSRTC.
The Ladle & Secondary Refining Technology Committee (LSRTC) held their fall meeting at AIST headquarters in Warrendale, Pa., on 22 Oct 2009. The meeting was also available to its members via the Internet and conference call. Following introductions, a review of the AIST Anti-Trust Guidelines, staff announcements, and a review of steel industry accidents were given. The LSRTC then discussed the upcoming Ladle Refractory Training Seminar. It was determined to co-locate the seminar with the AIST Lubrication Training Seminar in Birmingham, Ala., on 1–2 Mar 2010. The course outline will remain the same as previously established, but a round table on mid-campaign refractory repairs will be included. The seminar attendees will also be invited to attend the Birmingham Member Chapter event on March 2. The LSRTC then solicited volunteers to review papers from AISTech 2009 for the Ladle & Secondary Refining Best Paper Award. An update was provided by the representatives of the Ladle Design Subcommittee on the status of revisions to Technical Report No. 9. The revisions have been completed, and the document is being prepared for ballot draft approval, after which the document will be prepared for publication. The LSRTC papers chair then reviewed the abstract selections for AISTech 2010. The committee will sponsor sessions on ladle refractories, degassing and secondary metallurgy. The next LSRTC meeting will be on 3 Mar 2010, in Birmingham, Ala., immediately after the Ladle Refractory Training Seminar. Representatives from the Metallurgy — Steelmaking & Casting Technology Committtee joined the LSRTC members for three technical presentations. Carl Corbin of Vesuvius USA presented an in-depth review of ladle stirring practices, the current understanding of ladle stirring, and water modeling results of the optimum stirring practices for a variety of secondary treatment options. Kevin Cotchen of SMS Siemag presented information on the design and operation of vacuum systems for ladle degassers. Champion Chigwedu of ArcelorMittal presented the results of a study on casting clogging and clean steel practices.
The Ladle and Secondary Refining Technology Committee (LSRTC) held their spring meeting on 6 May 2009, in conjunction with AISTech 2009. In the absence of the committee chair, the immediate past chair of the committee presided over the meeting and thanked all for attending AISTech. Introductions were made, the recorder of the meeting minutes was named, and two new members were welcomed to the committee. An officer election was held, and the new officers were confirmed for the positions of chair, vice chair and papers chair. Following a brief review of the mission statement, the members re-approved its status for the following year. The members then reviewed plans for their fall 2009 meeting. Suggestions were to meet independently or to meet jointly with the AIST Continuous Casting Technology Committee (CCTC). The LSRTC will meet in Charleston, S.C., with the CCTC, and two members offered technical presentations on ladle degassing and ladle stirring. The Ladle Refractory Training Seminar is being rescheduled for March 2010 in Birmingham, Ala., at which time the LSRTC will hold their winter meeting.
The Ladle and Secondary Refining Technology Committee (LSRTC) held their winter meeting on 17 Mar. With the downturn in the economy and the difficulty members were having in travel, the committee held the meeting as a Web-based meeting, which was hosted from Gallatin Steel. After introductions, a review of the AIST Antitrust Guidelines and the AIST staff announcements, the membership chair gave an update on member contacts to the committee target list. The list will continue to be maintained as the committee looks to increase participation in their technical discussions. Safety incidents and prevention measures were discussed in a round table format, permitting each member to give an account of and resolution to any safety or health incidents at their facility. The technical discussion for the meeting focused on ladle fundamentals. The three presentations given were: “Ladle and Secondary Refining Basics” by Ruth Engel, “Fundamentals of Inclusion Control” by Stewart Robinson of Carbide Industries, and “Slag Design and Deoxidation” by Larry Wolfe of Carmeuse NA. The papers chair gave an overview of the LSRTC sessions for AISTech 2009. Five sessions were organized by the committee. The meeting concluded with a discussion regarding the Benchmarking and Operations Reporting system and the criteria relevant to ladles and secondary refining systems. The members will review the current benchmarking criteria and determine any changes to it at an upcoming meeting. The next meeting for the LSRTC will be in the fall of 2009. Considerations are again being given to a Web-based meeting to alleviate member travel costs.