Dewatering pump options - approx 120 m LIFT
Dewatering pump options - approx 120 m LIFT
(OP)
Question re mine dewatering pump options. Looking at suppliers/models/single stage centrifugal/multi-stage. We have an underground transfer pumping duty. Flow rate is approx 100m3/h. Head will be in the order of 120m to 130m. Currently the lads are looking at sulzer centrifugal. Mine is long life. I would have thought a small multi-stage, or double suction would have been more appropriate rather than a high speed (2 pole speed) centrifugal that is going to beat itself to death in a short period. Any comments? Water will contain some small percentage of solids. Maybe 3%. Regards





RE: Dewatering pump options - approx 120 m LIFT
A google search would go a long way.
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: Dewatering pump options - approx 120 m LIFT
RE: Dewatering pump options - approx 120 m LIFT
If you have sand in the pumpage, take good care of material selection. Don't let anyone talk you into mechanical seals if there are solids.
RE: Dewatering pump options - approx 120 m LIFT
Just to clarify for gawkers, you can't drain water out of a 120m deep hole with a pump on the surface.
You have to put the pump down in the hole.
In the case of a well you do it by dangling a submersible pump on a cable that holds the pump and its discharge pipe up and transfers electricity to the pump motor.
In the case of a mine you may have other options.
Mike Halloran
Pembroke Pines, FL, USA
RE: Dewatering pump options - approx 120 m LIFT
If the pump is actually located at the surface and expected to lift 120m, please fill us in on how the warranty battle ends up.
If, as physics demands, it is located subsurface, this is not a difficult service. Material selection and speed will be your two most important decisions.
RE: Dewatering pump options - approx 120 m LIFT
RE: Dewatering pump options - approx 120 m LIFT
RE: Dewatering pump options - approx 120 m LIFT
Vendors like gould or flyght have more experience with that end of the market. Also you need to decide if flow is fixed or variable. Problem with pumps with high fraction of static lift is the unless you're on a steep part of the pump curve flow can vary a lot if anything changes a small amount compared to a PD pump.
A lot depends on what this 3% is actually made of.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Dewatering pump options - approx 120 m LIFT
As an alternative to the hard metal materials, you might look at a rubber lined pump. Goulds and Worthington used to make good ones for use in abrasive sand or ash services. Weir is also a good place to look for pumping all kinds of nasties.
I'm not familiar with Sulzer models for use in anything but fairly clean process fluids; API type stuff.
RE: Dewatering pump options - approx 120 m LIFT
RE: Dewatering pump options - approx 120 m LIFT
RE: Dewatering pump options - approx 120 m LIFT
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)