PowerX installs new Aggregate Washing Plant at Tarmac’s Block Fen Quarry

May 13, 2022

Located near Ely, Cambridgeshire, Block Fen Quarry has been the latest recipient of a new PowerX wash plant installation.

The operation now boasts a new electric plant which has been designed, supplied, and installed by PowerX Equipment.

The new plant features a Terex® Finesmaster 200 compact and a Powerscrub 200R Logwasher and is designed to operate at 250tph, with material feed being sand and gravel with some clay; silt content is 7%-10%. From this a sharp sand, and four clean aggregates 6/10/20/40mm are produced. All saleable products are within the EN12620 grading envelope.

A standard feature of PowerX plants is the ability to walk from one end of the plant to the other without having to backtrack on walkways, without the use of vertical ladders.

Production process:
As dug material is loaded by dump truck into a drive over hopper which feeds the 39m long inclined main feed conveyor, passing under a clay picker the material is then fed onto a 6.1 x 1.8m, two deck rinsing screen. Here the reject material and sand (which is sent to the Finesmaster), are taken out with the rest of the material fed into the twin-shaft Powerscrub 200R logwasher where the blades convey the material from the feed end of the scrub to a 3.7 x 1.5m single-deck part rinsing screen.

Any organics such as roots are floated off to be dewatered over a 1.8m x 0.6m trash screen. Underflow from the trash screen is received in a catch box under the screen and then gravity fed to the sump tank under the hull. Any fines off the back end of the logwasher are sent to the Finesmaster.

Scrubbed aggregate then exits the main discharge of the 200R Logwasher via a 24m long transfer conveyor onto a 6.1m x 1.8m sizing screen which splits the required products of 6mm/10mm/20mm and 40mm aggregate which are then stockpiled by stone conveyors.

Finesmaster 200 Compact:
The Terex® FM 200 Compact Sand Recovery Unit at Block Fen is an all-electric plant and combines a collection tank, centrifugal slurry pump(s), hydro cyclone(s) and a dewatering screen on a single chassis.

It can recover 1 grade of sand from wet feed and offers a maximum recovery of saleable material through the removal of silt, slimes and clays below 75μm (200 mesh).

Constructed in a robust easy to assemble steel construction, it features galvanized walkways and handrails to provide easy access. It provides low maintenance and simple operation with a self-regulating cyclone tank. Pumps and cyclones have replaceable rubber liners for extended wear life with a high frequency dewatering screen reduces residual water content in your final product to 10–12%

The all-electric plant is driven from a dedicated control room through a PLC controlled panel to the client’s specification.

PowerX Equipment:
PowerX Equipment is the next generation in aggregate and mineral processing having been founded by industry specialists with decades of experience in this market.

Recently awarded the ISO 9001, 14001 & 45001 certificates for the quality, environment, health & safety standards, PowerX  Equipment are an experienced and dedicated team with expert in-house, highly qualified engineers to maintain your processing operation.

Working with some of the processing industries leading OEM’s, PowerX are in the enviable position, where they can design and supply the correct equipment for each individual application, the best possible solution to meet your needs.

With 15 Installation and Service vehicles, supported from their Meriden Depot and Coventry Stores facilities, PowerX have a quick response to any site issues, giving the best possible back up to all valued customers.

With a philosophy that embraces the understanding that the industry is continually changing – as are our customers’ needs – PowerX Equipment are committed to evolving, ensuring we offer the equipment and service you require now and in the future.