Luck Stone installs a CDE sand washing system in one weekend
The firm recently invested in a 110tph CDE EvoWash sand washing system in a bid to optimize output and reduce wastage at its site in Atlanta, Georgia.
Previously, the company produced washed sand using a traditional sand screw; however, Luck Stone found that the technology was not optimal in getting the desired specification.
Through various sand gradations and test analysis, CDE found that if Luck Stone wanted to produce an in-spec concrete sand, the removal of the 30-50# sand was essential, which had to be done in an optimized environment. To create this environment, CDE replaced the existing sand screw equipment with its EvoWash technology.
"We did a lot of work ahead of installation with gradations analysis, having CDE run simulations along with our own simulations so that we really knew what we needed to do to have the right controls when the plant was installed," said Brent Junior, senior process specialist at Luck Stone. "The installation was really great. On a Thursday morning, we started disassembling the sand screw. The team worked through the weekend and by Monday morning we were operating and producing in spec sand."
CDE's EvoWash separates smaller sand and gravel fractions through an integrated high-frequency dewatering screen, sump, and hydrocyclones which provide control of silt cut points and help eliminate the loss of quality fines. The EvoWash utilizes CDE's Infinity Screen technology, providing ideal dewatering results. This enables operators to produce a range of sands that are market-ready from the belt.
The EvoWash system can integrate into existing operations to reduce site footprint and eliminates the need to maintain settling ponds. The technology minimizes downtime and, with an increased number of parameters to ensure improved accuracy on the material cut point, removes the double-handling of materials, as high-value fines can often be lost and trapped at the bottom of ponds when processed with traditional sand screw equipment.
The CDE EvoWash allows the operator to make adjustments to the blending of final products as they discharge off the dewatering screen. It also allows adjustment in the feedbox, before material enters the dewatering screen, leaving a completely adjustable cut point in real-time. This enables the operator to perform a consistent and optimized concrete sand product.
With CDE's technology, Luck Stone is now producing three sand products: concrete sand, asphalt sand, and masonry sand to be used in construction projects across Georgia.
"The EvoWash is one of our core products and is much more efficient than the sand screw technology," concluded Teague. "It also helps produce a much drier product than a screw would so you're able to sell straight off the belt. Operators can also make quick adjustments to be able to blend different sands."
CDE currently has a trade-in deal where producers can trade in their sand screw for CDE's EvoWash.