Pit & Quarry, January 2013
Screening Let it rain Advanced screening technology helps a Canadian producer keep Mother Nature from ruining its profits EditEd by darrEn Constantino F amily owned and operated since 1978 Sundre Contracting Co understands the importance of delivering a quality product The operation located in Sundre Alberta Canada produces more than 30 product sizes from 1 16 in 2 mm fine sand to 12 in 305 mm screened rock and everything in between Whether its customer is an Alberta road builder concrete plant or any of a number of golf courses in Alberta British Columbia and Saskatchewan its products must meet tight specifications or be rejected Dealing with severe screen media blinding and pegging from clay material and a rainy climate Sundre needed an advanced solution After exploring several screen media options the operation found one that helped eliminate the production crippling effects of these conditions ultimately saving thousands of dollars while waiting for Mother Nature to cooperate One instance of Sundres success with this advanced screen media is evident in a challenging road job it accepted Using two 6 ft x 20 ft 2 m x 6 m Elrus screen decks equipped with conventional woven wire screen media the operation needed to screen the 3 4 in 20 mm minus aggregate from the customers own highly sundre uses Flex Mat 3 series d tensioned screen media on the top deck of its wash plant to increase production clay contaminated pit With the addition of rain every other day the operation was quickly losing quality because screen media throughput was being compromised In addition production time was significantly reduced owing to the need to frequently shut down and clean the screens The wet sticky nature of the material was causing severe blinding and pegging of the woven wire on our first screen deck says Jason Harder manager of operations at Sundre Contracting In order to meet customer material spec we needed to dry the material which took time away from producing www pitandquarry com January 2013 PIT QUARRY 25
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