Case Histories

GIW Pumps Finish 1st in Indonesia

GIW, once again, proves it is the leader in hydrotransport, leaving the competition in the dust.

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Problem
A copper mine in Indonesia, one of the largest and most remote in the world, was experiencing rapid parts wear. The mine is located at approximately 12,000 feet of elevation in a tropical forest that receives 300 inches of rain a year. The mill throughput and ore conditions create one of the most demanding mining applications in the world. The duty becomes even more difficult as the mill throughput and quantity of solids passing through the pumps increase over time.

Solution
GIW first envisioned a trial of one of its S range pumps (LSA 36 S). The hydraulically upgraded S range had just been completed. As standard practice, GIW wear-modeled the LSA 36, and though it showed greatly improved wear life, it was unable to make the required 2,500 hours in the severe duty.

GIW decided to develop a new special heavy-duty version of the LSA 36. GIW initiated trialing, on paper, using the GIW Casing Wear Program, which consists of multiple designs of a varying base circle. A computational wear life of 2,500 hours was achieved.

For the suction liner, GIW used its Nose Wear Program, which was developed by Dr. Stephan Bross. The design increased the clearing vane depth and the front shroud diameter. It also used a special, patent-pending diverter design. Again, GIW attained a computational wear life of 2,500 hours.

To complete the design effort on GIW’s new special heavy-duty LSA 36 pump, GIW applied its Impeller Wear Program, which was developed by Dr. Krishnan Pagalthivarthi. The ensuing design features lowered the inlet angles, improved vane sweep, and thickened sections in ultra high wear zones. Again, a computational wear life of 2,500 hours was achieved.

Results
Using a cross-functional approach to get superior engineering skills into a finished product, GIW quickly and efficiently solved the copper mine's problem. The pump recently exceeded its guarantee of 2,500 hours. A quick peek inside the pump noted only slight localized wear with even distribution. The competition's pump failed at an average of under 1,900 hours in the same application. GIW is the proven winner, time and time again.

For more information, please call (706) 863-1011, Ext. 2272, or send an e-mail to sales@giwindustries.com.