Southwestern Portland

3) Southwestern Portland. The Southwestern Portland Cement Plant, located in Fairborn, Ohio, has been operational since 1934. Whole automobile and small truck tires have been burned at the plant on a sustained basis since June, 1989 (55). 

The kiln, 220 feet long and 15 feet in diameter, is equipped with a four stage preheater similar in layout to the Genstar plant. Whole tires are fed, one at a time, into the riser duct just above the kiln feed housing through a trap door and isolation chamber. Tires are handled using a conveyor and elevator system that picks up one tire at a time. 

Burning whole tires rather than tire chips saves shredding costs, but transportation costs may be higher, depending on the distance between the cement kiln and the tire supply. The feeding mechanism for whole tires is also more expensive than for chips, because a seal must be provided to prevent leaking cold air into the process with the tires. 

In summary, cement kilns appear to offer an excellent market for the disposal of waste tires. At present only two plants burning tire chips and one burning whole 

---

Southdown, Inc. Southwestern Portland Cement Co. Victorville, CA 2 dry kilns, 1 with PH/PC FF coal fired. Current uae teat permit use not continuous whole and shredded TDF added at precalclner whole added Into feed end of kiln by double gate method. 

Southdown, Inc. Southwestern Portland Cement Co. Fairborn, OH 1 dry kiln PH FF coal fired. Past permitted use Whole 36" 10-15X use was successful and are renewing alternate fuels permit tires were slid, not rolled. Into feed end of kiln. 

Southwestern Portland Cement in Victorville, California, not only adds TDF successfully to the preheater, but concurrently supplements the primary kiln fuel by mixing... 

Test results using OEMS at Southwestern Portland Cement in Victorville, California, showed no increase in particulates, a decrease in NOx, and an increase in CO.16... 

Telecon. Clark, C., PES, with Mclver, D., Southdown, Southwestern Portland Cement. February 28, 1991. Southdown s TDF experience. 

Plant visit and interview with Robert Bauer, Controller, Southwestern Portland Cement Co. November 1989. 

Gouda, G.R., "Clinker Microstructure by Scanning Electron Microscope," Second Annual Conference on Cement and Clinker Microscopy, Sponsored by Gifford-Hill Co. Inc., General Portland Inc., and Southwestern Portland Cement Company, Dallas, Texas, 1980,19 pp. 

Oregon Health Sciences University, Portland, Oregon, USA University of Texas Southwestern Medical Center, Dallas, Texas, USA University of Maryland School of Medicine, Baltimore, Maryland, USA... 

---