The Design Aspects of Centrifugal Pumps for Abrasive Slurries

CIM Bulletin, 1973

G. WILSON, Manager-Engineering, Worthington (Canada) Ltd., Brantford, Ontario

Satisfactory hydraulic performance of a centrifugal slurry pump is not the only design criterion. If abrasive wear exists the severity of any damage can be reduced and the life of the wearing parts prolonged by selecting the correct pump to suit the conditions of service. This paper is concerned with the design and construction of centrifugal pumps for handling abrasive solids. The wear phenomena due to the slurry being pumped and the materials used to combat abrasive, wear are outlined. The hydraulic design of the impeller and casing and their relationship to wear and the hydraulic radial and axial unbalance are discussed. The prediction of abrasive wear in pumps can not be precise, as many factors are involved - and this is the object of current research.
Keywords: abrasive, impeller, Mohs hardness scale, slurry, volute, Design, Materials, mixture, particles, Pump, Pumps, Rubber, wear