Crushed Concrete, Sand & Gravel
2 Sands (NCDOT 2S Concrete Sand & a Fine Sand) | 2 aggregates (oversize & ¼” stone)
Matthews Sand & Gravel who are based near Smithfield NC, provide aggregate materials for the local construction industry.
The company was experiencing a number of issues with their existing sand washing plant such as lost fines to the pond, increased pond maintenance, a wet product which required time to dry and by operating on diesel it was costly to run.
CDE Presales Engineer, Tiff McMullan, responsible for the project said: “The lost fines to the ponds reduced available product for sale, lowering revenue, the ponds were costly to maintain, and a low production tonnage was resulting in a lot of overtime hours in order to meet demand.”
When they specified the issues they were confronting in their process and the detailed requirement for a new system, CDE identified that the solution to improve their production efficiency and increase their return on investment would be the installation of the M4500 wash plant. The M4500 allows for the feeding, aggregate screening sand washing and stockpiling of materials on a compact chassis and is part of the M-Series range of modular wash plants manufactured by the company.
With the implementation of the CDE equipment, Matthew Sand & Gravel would be able to produce a concrete sand to the desired specification as well as a new product, a residual fine sand, which had previously been lost to the pond. When CDE showcased the project and demonstrated they would have the capability to produce four different products (an oversize, an aggregate and two sands), Matthew Sand & Gravel specialists decided that the integration of the CDE machine would be the ideal solution they needed to reach a more efficient production and would also result in significant cost savings for the company.
So, in 2015, CDE commissioned and installed the M3500 wash plant, which can be accommodated in a small footprint thanks to its modular design. It incorporates a feed hopper & conveyor, a double deck 16x5 ft screen, and an EvoWash sand washing plant.
Some of the differential aspects of CDE for Matthews Sand & Gravel were their modern plant modular design, the efficiency of CDE sand washing methods, improved by the integration of cyclones and dewatering screen and the professionalism of CDE team. Their equipment facilitated highly accurate separation of silts and clays from the final washed sand product.
The CDE plant installed with a capacity of 200tph feed, enabled Matthews Sand & Gravel to generate 4 products in total - 2 aggregates (oversize & ¼” stone), 2 sands (NCDOT 2S Concrete sand & a residual fine sand).
Material Sand & Gravel, Claybound Aggregates
Output 0 – 2mm building sand | 0-4mm coarse sand | 4 – 10mm gravel | 10 – 20mm gravel | 20 – 40mm gravel | +50mm oversize
Material Limestone, Quarry Waste, Crushed Rock, Manufactured Sands, Sand & Gravel
Output 20mm, 10mm and sand for the concrete mix
Material Sand & Gravel
Output B, D, and F Rock | #200 fines | M-Sand