Published: Jan 1987
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Hydraulic transportation of slurries is being adopted for short-distance, loop-in-process industries as well as for long-distance pipeline transportation of mining ores. The presence of slurry causes excessive wear on pump components as well as on the system. Wear depends on the type of slurry to be transported by the pumping system. It is, therefore, essential to select proper metallurgy so that the life of the system is increased and so that minimum possible repair and maintenance are required. There is a need for more technological innovation to adopt a proper sealing system and to use special elastomers and other materials to increase the life of the pump components. Centrifugal pumps are used normally for the short loop system, where medium and low pressure is required. Positive displacement pumps are used for long-distance transportation with a high-pressure and low discharge requirement. Special care is required to design the hydraulic passage, depending on the size of the solid being pumped in the design of components for centrifugal pumps. Glandless pumps are also developed to avoid the complex sealing system.
slurry pumps, pumping system design
Head, Engineering, Bharat Pumps & Compressors, Ltd., Naini, Allahabad,