A new Lokotrack ST2.8 mobile scalping screen is helping a Colorado cement plant to produce a clean additive for its production process, resulting in significant cost savings. GCC America’s Rio Grande plant, located south of Pueblo, Colorado, USA, requires a very clean, 1” x 4” limestone product for the cement additive. The large Rio Grande plant, which opened in 2008, is one of the most technologically advanced cement mills in the country and has its own limestone quarry on site.
To produce the clean additive efficiently and economically, GCC America turned to Inter-Mountain Construction Equipment (IMCE), Metso’s crushing and screening distributor in the state of Colorado. After consulting with Greg Jones, President of Inter-Mountain Construction, and Seth Wheeler, Metso’s regional Distribution Manager, GCC America agreed to a demonstration of the new Lokotrack ST2.8 mobile scalping screen at the Rio Grande plant.
Set up in less than five minutes
The operators at Rio Grande moved the ST2.8 into the plant’s quarry and fed it 8-in. minus blasted material to make the required 4” clean end product. Adding extended hopper wings to the ST2.8 allowed the operators at Rio Grande to feed the screen from the rear using a large CAT 980 wheel loader, which was also helped to increase productivity.
“The ST2.8 has been a pleasant surprise,” says Damian Flores, Quarry Manager at GCC America. “The quick set up and simple controls allow the operator to start work quickly. The tonnage we have achieved with this screen has exceeded my expectations.”
According to Greg Jones, the ST2.8 has been able to produce approximately 500 tons per hour of the limestone additive. GCC America is saving more than $20 a ton by producing the additive themselves, rather than buying it from an outside source.