Pit & Quarry, June 2014
SPECIAL SECTION CRUSHING SECONDARY BREAKING V Slam offers help for frac sand The Stedman Machine Co is touting its V Slam Vertical Shaft Impactor for a variety of applications including fracking The company said it is ideal for all coarse to fine frac sand limestone and gravel crushing needs The V Slam lowers operating costs with low horsepower per ton and a wide speed range It boasts a high rotor tip speed which allows a high degree of process control and tighter particle size distribution with raw feed sizes up to 5 in and capacities up to 500 tph Its reversible wear parts can reduce downtime by more than 50 percent A full size unit is available for testing at the Stedman Testing Toll Processing Facility in Aurora Ind www steadman machine com Use as a secondary or tertiary crusher The CH550 crusher from Sandvik Construction can be configured for either secondary or tertiary crusher applications It comes with no plastic backing in order to minimize the environmental impact and produce safer working conditions Based on the companys Hydrocone design the CH550 combines the ability to produce ideally shaped products in fewer crushing stages According to Sandvik one of three eccentric bushings will cover 90 percent of the application range The automatic setting system ASRi is included as standard to guarantee safe use as well as optimal material reduction and shape www construction sandvik com 46 PIT QUARRY June 2014 www pitandquarry com
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