Pit & Quarry, February 2011
At Natural Bridge Stone Hinkle installed the modular panels on the bottom decks of the scalping and finish screens The scalping screen uses 1 4 in Flex Mat 3 Modular screen media to help pull out the minus 1 4 in material after the primary crusher for use as washed Class I sand for companyowned asphalt plants Natural Bridge uses the modular screen media on the bottom deck of its finish screen with a combination of 1 4 in and 3 16 in openings to exert tight control over gradations The media also helps clean the quarrys 1 4 in plus asphalt chips for use in its onsite asphalt plant Spencer says the quarry is a big help in mixing gradations for asphalt prior to the asphalt plant because the plant doesnt have all of the bins on hand that it needs to create certain mix varieties The flexible modular panels work because they open up the screening area The crown in the center creates With its new equipment the Somerset plant has been able to almost double its production from 400 tph to up to 800 tph the tension needed to give the panel firmer movement Spencer says Its the difference between a gallop and a trot he adds explaining that a horses trot is bouncy with an up down movement A gallop is firmer and it rolls Natural Bridge now operates at 96 percent uptime And Spencer says a goal of 99 percent uptime is on track for 2011 Embracing the technology As a result of Hinkles success with Flex Mat 3 Modular the company began to add the media to many of its aggregate operations screens Over the past three years the company has increased its use COVER STORY of Flex Mat 3 screen media to a point that three fourths of Hinkles aggregate facilities now utilize the technology in either modular or tensioned configuration In fact one of these operations Somerset Stone recently moved and upgraded its entire plant As part of the upgrade Sutton chose to add Flex Mat 3 Tensioned screen media to the middle decks of its twin secondary screens and on all three decks of its finish screen Somersets processing plant had been located at the top of the quarry from its inception in the mid 1970s until mid 2009 As we mined we had to haul the material farther and farther for processing Bryant says The 2009 upgrade replaced the entire plant and we located it down in the pit According to Somerset Quarry Superintendent Harley Coffey the operations old processing plant had used synthetic screen media to combat blinding but they eventually tried Autogate Tailgates Are you still leaving money on the ground 309 697 9200 800 447 6464 www philsystems com sales@ philsystems com Get the free mobile app at http gettag mobi www pitandquarry com February 2011 PIT QUARRY 23
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