How a Warman® SHW submersible slurry pump can overcome dewatering challenges
Tired of your operations being disrupted by unreliable submersible slurry pumps? We explore how the versatile Warman® SHW provides reliable submersible dewatering in the most aggressive mining applications.
Varying fluid levels, changing slurry consistencies, mineral types and even the beneficiation chemicals present can significantly impact the performance and wear life of your pump. This transforms what should be a reliable, low maintenance piece of equipment into something that not only demands significant time to repair, but also has a negative impact on your bottom line due to part replacements and production downtime. Issues commonly affecting submersible pumps include moisture intrusion into critical internal electrical or lubricated components, abrasive wear of wetted components, impellers clogging due to particle size or slurry fluid composition, and insufficient slurry feed flows that causes overheating and cavitation. In this article, we explore the root causes of these problems, and how different features allow the heavy-duty Warman® SHW submersible slurry pump to provide reliable dewatering in almost any application.If your submersible slurry pump regularly goes into a failure state, there’s a good chance it’s because slurry has penetrated the motor housing or seal chamber. There are a number of ways you can prevent this from occurring and reoccurring, whether the fluid intrusion 8
Pipes, Pumps and Valves Africa - May/Jun 2020
is due to the pump’s housing, the wear materials being unsuitable for the slurry it’s processing, or incorrect mechanical seal selection. Leverage the right wear materials In the case of a general failure in the pump casing, this is likely due to the wear material being unsuitable to withstand some aspects of the slurry being pumped either the abrasive qualities of the particles contained within or a corrosive property of a chemical that was introduced at some point in the beneficiation process. Without changing the slurry composition or processing method, the only real way to resolve these problems is to ensure that you’re using a heavy-duty submersible slurry pump with wear materials especially designed to meet the challenges of your application. For example, the Warman® SHW has specifically been built for the most demanding submersible pumping applications, with a heavy-duty, all high-chrome (A05) wet end. Ultrachrome® A05, is proprietary high chrome white iron designed by Weir Minerals to provide a long, dependable service life in highly abrasive applications. The Warman® SHW casting material can be selected to
Pipes, Pumps and Valves Africa May/Jun 2020