MATERIALS HANDLING
PUMP PRIORITIES
Particular pumping solutions can truly make a difference in challenging environments, says Harvinder Bhabra
T
he mining, quarrying and construction industries present some of the most challenging applications encountered by pumps.
Te range of process fluids handled varies quite significantly across these processes, ranging from clear water to heavy slurries and from alkaline, pH neutral to highly corrosive fluids. As well as having to deal with the process requirements, products must also be compliant with the environmental and legislative constraints in play across geographies. Here, we discuss how the variation in process fluid types can determine the pump and materials designs.
WATER, CHEMICALS AND SLURRY
Whilst the mining, quarrying and construction industries may seem quite far removed from each other, there are several similarities in the process fluids handled
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across all three industries. All incorporate an element of product extraction, followed by transfer through the various parts of the processes before handling the disposal and treatment of waste thereof. One way to distinguish between the various pump designs utilised is to segregate the fluids into process “streams”. In simplified terms these are: slurry; dirty water; and process water. Slurry is fluids (normally water) carrying medium to large solids. When the carrier fluid also has corrosive properties, the criteria for materials selection is also affected Dirty water is fluids carrying small amounts of fine solids and process water is clear fluid. Other process fluids can also be encountered – often with various degrees of corrosive properties Te pump types for each of these
streams may vary by hydraulic design and/or materials of construction. Sulzer’s range of pumps and materials offers a
Submersible drainage pump XJ 900
variety solutions for these challenging applications.
MINING AND METALS PROCESSING Fluids in mining and metals processing go through several stages. Whilst there are some variations in this depending on the final product, the most common sequence involves ore extraction, comminution, separation
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