B&E International, a partner of choice for the mining and construction industries with its integrated crushing, mining and mineral processing solutions, has successfully completed an EPCM contract for the design, manufacture and installation of an aggregate crushing plant in Queenstown in the Eastern Cape for client Raubex Aggregates. “The plant needed to produce at least seven different types of aggregate specifications at any given time,” Dewald Janse van Rensburg, B&E International, Managing Director, says.
This was in order to be able to cater for the diverse requirements of the Queenstown market in the most cost effective and efficient manner possible. “Normally the production of so many different aggregate specifications calls for a major plant that has to be stopped for screen and liner changeover when the specification needed to be altered. Instead B&E International designed a plant that can produce all these specifications simultaneously as well as allow for the opportunity to produce larger volumes of a single specification for major projects,” Janse van Rensburg says. “With our plant it is very easy to make all these different aggregate sizes work with the least amount of downtime.”
The head feed capacity of the plant is 200 tph while the crushing equipment specified comprised a Metso C100 jaw crusher with a vibrating grizzly feeder, a three deck CVB 1845-3 screen, a four deck CVB 1845-4 screen and two HP 200 cone crushers. Typical products produced by the plant include all road stone specification materials, namely 6.7 mm, 9.5 mm, 13.2 mm, 19 mm and sand fractions, in addition to ballast and gabion and base course specification materials.
“The plant has been designed in such a way that the changeover needed to shift production from one specification to another has been optimised,” Janse van Rensburg says. This was achieved by means of SCADA automation in addition to highly mobile and flexible conveying systems being incorporated in the design philosophy of the plant. “The most important consideration in the design and engineering of this aggregate crushing plant was to ensure that it achieved the required production rate without compromising the final quality of the material.”
Janse van Rensburg reveals that actual production throughput on the newly commissioned plant has already exceeded design nameplate specifications. “The successful design, manufacture and handover of this aggregate crushing plant to the client bodes well for B&E International’s vision of becoming a first choice service provider for the supply of EPCM crushing and mineral processing services to the mining industry through Africa.”