Slurry Pump Basic - 911 Metallurgist

Transcription

Slurry Pump BasicBasic guidelines in slurry pumpingIntroducing the pump sizingsoftware - Metso PumpDim for Windows

Published byMetso Minerals (Sweden) ABS-733 25 Sala, SwedenTelephone 46 224 570 00Telefax 46 224 169 50

SLURRY PUMP BASICHISTORYSlurry Pumps - History.1Horizontal Slurry Pumps.2Vertical Froth Pumps.2Vertical Sump and tank Pumps.3INTRODUCTIONHydraulic transportation of solids.5What type of solids?.5What type of liquids?.5Definition of a slurry.5What are the limitations in flow?.6What are the limitations for solids?.6Slurry pumps as a market concept .6Basic definitionsWhy Slurry pumps?.9Slurry Pump - name by duty.9Slurry Pump - name by application.9Slurry pump - Dry or Semi dry?. 10Slurry Pumps and wear conditions. 12MechanicsBasic components. 15Basic designs. 15Slurry Pump - componentsImpeller/Casing . 17Pump impeller and casing - the key components of all Slurry Pumps. 17The Slurry Pump impeller . 18Impeller vane - designs. 18Number of impeller vanes?. 19Semi-open or closed impeller?. 20Closed impellers. 20Semi-open impellers. 20Vortex/induced flow impellers. 21Basic rules. 21Impeller diameter. 21Impeller width. 22Limitations in geometry and why?. 23The Slurry Pump casing. 23Volute or concentric?. 24Split or solid casings?. 24Content

Wear protectionAbrasion. 27Erosion. 28Effect of erosion on pump components. 29Wear protection - what options?. 30Selection of wear materials. 31Effect of particle size on material selection. 32Selection of wear material - Metals. 33Selection of wear material - Elastomers. 33The elastomer families. 34Something about ceramic liners. 35SEALSCritical parameters for the selection of seals. 37Basic function of shaft seal. 38Type of leakage. 38Location and type of seals. 38Flushing seals. 39Seals without flushing. 40Centrifugal seals. 40Centrifugal seal limitations. 41Mechanical seals . 41Slurry Pumps without seals - vertical designs. 43Shafts and bearingsTransmission designs. 45Pump shafts and the SFF factor. 45Basic on bearings. 46L10-life. 46Bearing configurations. 46Bearings and bearing arrangements. 46Selection of bearings. 47Drives for Slurry PumpsIndirect drives. 49Direct drives . 49Drive arrangements. 50V-belt transmissions (fixed speed drives). 51V-belt transmissions - limitations. 51Variable speed drives. 52Something about ”combustion engine” drives. 52hydraulic performanceHydraulic peformance. 55Pump curves. 56Hydraulic performance- what curves are needed?. 57H/Q curves- pump affinity laws. 58Slurry effects on pump performance. 59Pump performance with settling slurries. 60Pump performance with non-settling (viscous) slurries. 61Content

Performance correction chart. 62Head and pressure. 63Hydraulic conditions on the suction side. 64Net Positive Suction Head (NPSH). 64Vapour pressure and cavitation. 64NPSH - calculations.

In September 2001 Svedala was acquired by the Finnish company Metso. A totally new Slurry Pump range for both horizontal and vertical pumps has since then been developed, and is covered by this handbook. History 4. 5 Introduction INTRODUCTION Hydraulic transportation of solids In all wet industrial processes ”hydraulic transportation of solids” is a technology, moving the process forward .