Suggestions for a 15% clay solids / 85% water slurry pump
Suggestions for a 15% clay solids / 85% water slurry pump
(OP)
I am looking to see if anyone has any experience and guidance regarding what type of pump to consider for moving about 10 USGPM of a luke-warm water / clay solids "milkshake" slurry (15% solids, 2-50 microns) at a differential head of about 150 ft.
I am thinking maybe a small progressive cavity pump or wobbler pump with a viton stator and 1 bhp motor (I am told to also consider a hydraulic drive but...for 1 bhp...why?) from Moyno, Seepex, Allweiler or Roper.
I searched previous threads and I think the direction was similar for a slightly different (submerged) application, which oddly enough was also described as a "milkshake". In fact, in a sample jar containing what I am trying to pump, when you shake it it ends up looking just like Nestle's Quick, although it doesn't taste nearly as good.
Since this is for a little pilot skid with a short life expectancy, I could even consider a little Grundfos CR1 and just live with it wearing out...
Anyone have any thoughts?
Thanks in advance...
I am thinking maybe a small progressive cavity pump or wobbler pump with a viton stator and 1 bhp motor (I am told to also consider a hydraulic drive but...for 1 bhp...why?) from Moyno, Seepex, Allweiler or Roper.
I searched previous threads and I think the direction was similar for a slightly different (submerged) application, which oddly enough was also described as a "milkshake". In fact, in a sample jar containing what I am trying to pump, when you shake it it ends up looking just like Nestle's Quick, although it doesn't taste nearly as good.
Since this is for a little pilot skid with a short life expectancy, I could even consider a little Grundfos CR1 and just live with it wearing out...
Anyone have any thoughts?
Thanks in advance...
Regards,
SNORGY.





RE: Suggestions for a 15% clay solids / 85% water slurry pump
RE: Suggestions for a 15% clay solids / 85% water slurry pump
As this is only a pilot scheme you could consider a small ANSI or similar process pump with a duplex SS impeller, this will give reasonable life.
RE: Suggestions for a 15% clay solids / 85% water slurry pump
There would be air - and pressurized nitrogen - available, but the client prefers to stay away from that. I don't know much about the electromechanical driven diaphragm pump, but from what I could find out, it's a good option. One of my initial thoughts had in fact been a Sandpiper pump, but I ruled it out due to client's reluctance to use pneumatically driven pumps.
I also looked at DiscFlo, but I thought that it would be inefficient at low viscosity - 50 cP and lower - and the fine nature of the slurry didn't warrant it. Another option I thought about was Wanner HydraCell. I am thinking that, for what I am trying to accomplish, that's a bit too much pump and too much pump technology for this application.
I just don't want to send out a generic request for quote and get a whole bunch of declined bids, thereby wasting everyone's time.
With respect to the hydraulic drive, there would be several similar (mostly smaller) slurry pumps on this package, moving the same stuff at different rates. I envisaged an electric-driven hydraulic supply pump (could even be a hydrostatic drive / swashplate type) and a maze of tubing (or hoses) and valves to route to the various hydraulic motors, and decided that I didn't prefer such a scheme when compared with half a dozen small motors.
Regards,
SNORGY.
RE: Suggestions for a 15% clay solids / 85% water slurry pump
That's in keeping with my "buy a little Grundfos and accept that I am going to wreck it" philosophy...
Regards,
SNORGY.
RE: Suggestions for a 15% clay solids / 85% water slurry pump
Years back I had a client who unbeknown to myself until much later put one of our ANSI process pumps(CI case, Cd4mcu impeller - 2900rpm) on a china clay filter-press application, this application meant it was running at near to CV for hrs on end maintaining pressure to the filter. The wear life was unbelievable considering the application.
RE: Suggestions for a 15% clay solids / 85% water slurry pump
Valuable advice from a professor many years ago: First, design for graceful failure. Everything we build will eventually fail, so we must strive to avoid injuries or secondary damage when that failure occurs. Only then can practicality and economics be properly considered.
RE: Suggestions for a 15% clay solids / 85% water slurry pump
However, if you need specific amounts of liquid, it is cheaper to buy a PD pump, rather than a centrifugal with an associated flow control valve(in MOST cases.
Will Chevron Corp.
RE: Suggestions for a 15% clay solids / 85% water slurry pump
I agree with the assessments re: Grundfos...
It's not easy to source "readily available" minute little pumps for a service like this.
Sounds like a mechanically driven diaphragm pump might be the best fit.
The service life will be measured in terms of months, not years, and the pilot that they are going into is intended to test (hopefully prove) a process technology. I don't mind chewing up a few wetted ends during the exercise. I am inclined to try Hydracell and / or PC pumps with spare wetted ends, depending on whatever sparing philosophy the client chooses to adopt.
Thanks for your advice, everyone...it has helped (and continues to help) a lot. It's good to bounce things off you folks.
Regards,
SNORGY.
RE: Suggestions for a 15% clay solids / 85% water slurry pump
http:
Steve
RE: Suggestions for a 15% clay solids / 85% water slurry pump
SteveWag:
I like this concept at first glance, and I will be looking into it in further depth.
Regards,
SNORGY.
RE: Suggestions for a 15% clay solids / 85% water slurry pump
http://www.naglepumps.com/
rmw
RE: Suggestions for a 15% clay solids / 85% water slurry pump
It's been too long that I have "dabbled in everything". I should have thought of these guys.
Regards,
SNORGY.
RE: Suggestions for a 15% clay solids / 85% water slurry pump
RE: Suggestions for a 15% clay solids / 85% water slurry pump
RE: Suggestions for a 15% clay solids / 85% water slurry pump
These will be sacrificial pumps with a short life expectancy in a non-dangerous service. If I can find a small enough slurry pump I'll go that route, otherwise probably a PC and a whole bunch of stators.
Regards,
SNORGY.
RE: Suggestions for a 15% clay solids / 85% water slurry pump
As for sizing it is more appropriate to have them run slow to make them last. it is not oversizing, just good engineering. Too many "Johnny come latelies" have been flogging their UNDER sized PG pumps into the market. They sell you a fast running small size frame and make a killing on the spare parts.
When I specify PG pumps I always include a five year no fault warranty clause. This keeps the dodgy salesman out of the arena and I end up with a decent engineering solution.
I have seen Mono Australia pumps in action for nigh on 30 years in a large scale sewage facility for Sydney Water. they pump everything including the kitchen sink.
I have also used them for mine dewatering pumping tailings and coal debris.
RE: Suggestions for a 15% clay solids / 85% water slurry pump
We will try to get proper centrifugal slurry pumps if we can get them that small.
Regards,
SNORGY.
RE: Suggestions for a 15% clay solids / 85% water slurry pump
RE: Suggestions for a 15% clay solids / 85% water slurry pump
Oddly enough, I raised that very thing in a design review yesterday. The pilot is intended to prove a process technology, not to prove the durability of its equipment. The various maintenance and design life issues can be addressed with larger equipment in a commercial scale development once the processing technology is proven. Meanwhile, I don't mind beating up this equipment for a few months - but it does have to work for those few months.
Regards,
SNORGY.
RE: Suggestions for a 15% clay solids / 85% water slurry pump
RE: Suggestions for a 15% clay solids / 85% water slurry pump
Regards
Nick
RE: Suggestions for a 15% clay solids / 85% water slurry pump