Limestone Size Reduction and Regional Grinding will be the Subject of the Hot Topic Hour on September 10th at 10 a.m. CDT
The speakers at this Hot Topic Hour will address the economics of on-site versus regional grinding of limestone and the advantages or disadvantages of each. Case studies may be presented to demonstrate economics and advantages of each approach. The speakers will also address the mechanics of grinding - equipment types available and the capital and operating costs, maintenance issues and reliability associated with each method of grinding, selection of stone size for initial feedstock, wet versus dry grinding and any other issues that need to be considered when making decisions relative to obtaining the proper quantity and size of crushed limestone for a particular FGD system reliably and at the lowest cost.
Presenters:
Scott Eck, Senior Sales Engineer at FLSmidth Air Tech, Inc. The mandated requirement for removal of sulfur oxides from flue gases emitted by coal-fired electric power generating station continues at a steady pace. The proven technology to accomplish this involves the mixing of finely ground limestone particles in water slurry form with the flue gases in a wet scrubber vessel to achieve a chemical reaction that converts the sulfur oxides in the gases to synthetic gypsum in the slurry. The synthetic gypsum slurry is then removed from the scrubber, dewatered, and the solid gypsum land-filled or used for wallboard manufacture. The technology for making the finely ground limestone slurry requires ball mills operated in closed circuit with classifying hydrocyclones. These limestone milling circuits for FGD scrubbers have been in successful operation for over 40 years. FLSmidth is one of the world's leaders in design and manufacture of ball mill systems and has an extensive track record in providing ball mill limestone milling systems and gypsum dewatering systems for the FGD industry.

Guillermo Benjumea, Senior Engineer, Sales & Marketing at Loesche



To register for the "Hot Topic Hour" on Thursday, September 10, 2009 at 10:00 a.m. CDT, click on: http://www.mcilvainecompany.com/brochures/FGDnetoppbroch/Default1.htm .



Bob McIlvaine
847 784-0012 ext. 112
rmcilvaine@mcilvainecompany.com