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Send  Share  RSS  Twitter  21 Jun 2009

ENGINEERING: Saldanha Gets Mammoth Reclaimer


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THE tender for the supply of hydraulic systems, for what is believed to be one of the largest iron ore stacker reclaimers in southern Africa, has been awarded to Hytec by Sandvik Materials Handling. The tender is valued at R1.5 million.

This is by far the biggest stacker reclaimer that we have worked on. The machine will be used in the Saldanha Bay port, by Sandvik’s end client, the National Ports Authority, to stockpile and reclaim iron ore for onward shipment,” says Klaus Marggraff of Hytec.

The Saldanha stacker reclaimer is capable of handling 10 000 tons of material an hour and features a boom length of 60m. “We have supplied complete hydraulic solutions for the luffing system, which controls the height of the conveyor boom , as well as the hydraulics for the tripper car , the bypass chute and the stacking and reclaiming system,” says Marggraff. The entire hydraulic system is powered by two 132kw electric motors, which drive two electronically controlled hydraulic pumps.

The most challenging aspect of this project was to ensure the smooth control of the luffing system. The potential problem is evident, with such a large scale machine, any shudders or vibrations will be transmitted down the length of the boom resulting in an inefficient and unsafe piece of equipment. The Hytec team met the challenge head on and made use of its extensive industry experience to carefully select the correct hydraulic components for the job. We supplied a primary control for the hydraulic pump which is responsible for the acceleration and deceleration of the boom. The solution that we provided not only solves the original challenge, but has also proved to be highly energy efficient.“

We used Bosch Rexroth hydraulic components throughout the systems on the stacker reclaimer. The systems have a minimum projected operational life of ten years,” says Marggraff.

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