Rock Products

JUN 2018

Rock Products is the aggregates industry's leading source for market analysis and technology solutions, delivering critical content focusing on aggregates-processing equipment; operational efficiencies; management best practices; comprehensive market

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22 • ROCK products • June 2018 Sand Processing S ince Oldcastle Materials upgraded its Burnet County, Texas, quarry with a new all-in-one EvoWash dual-pass sand-processing plant, inconsistent production levels and loss of fines to ponds are a thing of the past. The Burnet sand and aggregates company is part of Oldcastle Materials' national network of construction solutions. It pro- cesses raw limestone feed to produce construction materials, including concrete sand. The wash plant at Burnet was initially equipped with a 44-in. sand screw, a hydrocyclone and a dewatering screen intended to process 200 tph of limestone. However, valuable sand was lost to the settling ponds and the final product contained high levels of moisture. Lowell Lindsey, plant manager at Oldcastle's Burnet Quarry said, "After identifying the cause and impact of the inefficien- cies affecting our existing equipment, we knew we had to invest in an upgrade to ensure we could operate at full feed capacity and extend the life of our settling ponds. "However, before upgrading to a larger sand screw, we wanted to check out cyclone technology, which is becoming increasingly popular in the materials washing industry," he said. "We contacted the local CDE office in Cleburne, Texas, It All Comes Out in the Wash Texas Construction Materials Company Upgrades Processing Technology for Optimal Efficiency. By Mark S. Kuhar

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