ANSI Pump with 10+% Solids

You have not said what it is that you want to do.

You have said that the vendor rep and the factory bulletin give different performance information. That you should take up with them.

This REALLY should be directed to the pump supplier.

If you know what you will be pumping tell us. I hope it's not "confidential".

The pumped solution is a combination of:

Liquid/s:

Solid/s:

Maybe some info about process temperature etc.

Then we can continue.

Thanks lynlynch.

• I want to know if an ANSI centrifugal pump are possible for the ~150 F @ 15psig slurry with more than 10% solids (I need to confirm the specifics aren't confidential - anyhow wouldn't the specifics like which solvent and solute will only effect the material of construction selection?)
• if ANSI pumps aren't possible above certain %solids, any idea why is that? or maybe the limitation is combination of various factors such as solids%, viscosities, densities...?
• Since seal chamber selection guide mentions about %solids, is that the only major pump component impacted by solids?

I guess I just want to understand what does it mean by ANSI pump. Only thing I found online regarding what is an ANSI pump is this site, as per which ANSI standards only dictates some dimension aspects of the pump. I am hardly pump literate to understand how that will limit the ANSI pumps to fluids with <5% solids.

Does it make any clearer?

I would like to share with you my idea.

The higher the %solid the higher viscosity of the fluid which will drop the efficiency of a centrifugal pump.

Other than seal chamber/mechanical selection, the impeller of the pump must be of open type for handling solid. You have to consider the higher rate of wearing, therefore additional feature such as lining or coating of impeller (rotor) is recommended.

Some Progressing Cavity pumps can handle up to 50%solid. All pumps will have a limit to handling solid. So it is advisible to theck with the pump manufacturer.

These folks seem to offer ANSI pumps that will handle just about anything that can be pumped: http://www.discflo.com/index.html

Here's the page on their "ANSI pumps": http://www.discflo.com/P-ansi.htm

Show that to the sales rep!

NOTE: I don't work for these folks, no endorsement implied, your mileage may vary, some assembly required, etc.

In addition to coatings or lining of impeller and other pump components to combat issues of wear in environments of extreme or harsh use such as high percentage of solids, cryogenic treating of the material will increase the wear and corrosion resistance of the metal and unlike a coating or lining cryogenic treating does not wear off. Just an option I wanted to bring to the table that maybe not everybody is aware of. dkimmel@300below.com

The Goulds 3196 is an excelent pump with a recessed impeller for pumping slurries, usuall soft fibrous slurries for the paper and pulp etc but is a useful pump in many other industries. You do not mention particle size or hardness so I assume you are talkin about a "soft" slurry. If so, talk to Goulds (or flowserve or KSB etc etc) and they will tell you whether they can pump your particular slurry or not.

ANSI pump standards, like API 610 or DIN etc are design standards and though I have not read ANSI for a very long time I do not believe that they are at all interested in the % slurry. They specify the construction, dimensions, pressure capability etc. What you try to pump with a specific pump is between you and the pump OEM.

If you have a "hard" particle slurry the Lawrence Pumps is one of the best. Or Warman if you are mining.

Thanks!

slurry concerned here has <0.3mm size with 90+% <.1mm. Is that "soft" slurry? or rocks will be hard and the chemical in solution will be soft? or does this has to do with corrosivity? I couldn't find any definition for "soft" and "hard" slurry.

Sorry, my use of soft and hard is not very clear. Maybe I should have used abrasive and non-abrasive instead. In the paper industry for instance they pump slurries that are "fibrous" and are a pain in th ***** to seal, but are not abrasive so do not require hard materials etc.

In refineries you have FCCU slurry pumps that have alumina catalyst fines that are abrasive to just about anything known to man. The pump design for these two types of slurries is completely different.

Also the particle size and hardness is important when choosing wear ring clearances, or moving away from wear ring type designs. For the "soft" slurries clogging of impeller passages may be your biggest problem so you look to open impellers and or recessed impellers etc.