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-20mm Aggregate Slurry Pumping

-20mm Aggregate Slurry Pumping

-20mm Aggregate Slurry Pumping

(OP)
Good Day All

It would be appreciated if you could provide any assistance or insight to my application problem.  I am attempting to convey a -20mm stone by means of a pumping system from the source to the process plant. The slurry will be pumped over a distance of about 1000m.  I have had a reputable company look at my application and provide a solution.  They have proposed running three pumps in series.  I would however appreciate any comments from people that have experienced similiar applications and could possible view their concerns or problems that they might foresee.

Your comments are all highly appreciated.

Thank You
Ken

RE: -20mm Aggregate Slurry Pumping

you will need tgo provide more info.  eg volume or tons per hour; solids content; elevation change; density; gradation and type of stone; process considerations; etc  was the reputable company a pump supplier or a consultant.?
i have seen numerous series pumping applications for slurry applications, and they work, but some better than others.

RE: -20mm Aggregate Slurry Pumping

(OP)
Hi MacMil

Thanks for your response.  The Technical specifications are as follows:
350 Tons/Hr.

Pipe Module Technical Report    Code : PQ2003/280 SG = 1.38

Flow Rate             161.32 l/sec
Suction height          1.00 m
Discharge height       61.00 m
Discharge pressure      0.00 kPa

Pipe Section         Discharge Pipe
Pipes in Parallel                 1
Pipe Length                1500.0 m
Nominal Diameter           355.0 mm
Inside Diameter            257.0 mm
Pipe Material                  HDPE
Pipe Roughness            0.0150 mm
Pipe Fittings                     2
                  2 LONG ELBOW, 90ø
Reynold's No                 799219
Velocity                   3.11 m/s
Settling Vel               2.52 m/s
Friction Loss                      
  Fittings                    0.2 m
  Pipe                       37.8 m
  Total                      38.0 m

NPSHa               7.76 m
Static head        60.00 m
Friction head      37.96 m
Total head         97.96 m

Pump Selection Technical Report

Flow rate       161.3 l/sec       Static head     60.0 m
Total head       98.0 m           Friction head   38.0 m
Speed Head       98.9 m

SG Solid         2.700            Solids Flow     350.50 Tonnes/hr
SG Liquid        1.000            % Solid Wt        43.7 %
SG Slurry        1.380            % Solid Vol       22.4 %
Head Ratio        0.99            D50 Size        0.0750 mm
Eff Ratio         0.99            Max Size        2.0000 mm

No of pumps 6 (Series)
Pump Model   10/8F-AH-M           Supplier     WARMAN
Flow rate      161.3 l/sec        Power Abs      51.34 kW  
Head            16.3 m            Power Req      64.17 kW  
Pump speed       465 RPM          Motor size     75.00 kW  
NPSHr            5.6 m            Efficiency      69.4 %     
Impeller D       686 mm           BEP             69.8 %     

Your Comments are highly appreciated.

Kind Regards
Ken

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