Crushing, Screening & Conveying

Crushing, Screening & Conveying

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Best grade of steel for a pump to survive a slurry (4 replies)

B
Reactor
5 years ago
Reactor 5 years ago

We are looking for expertise in the best grade of steel to use for the internals of a pump to transport a slurry with the following characteristics:

  1. Particle size is typically 100 mesh / 150 microns
  2. Mohs hardness between 3.5 to 4
  3. Solids content ~25%
  4. H2SO4 ~20%

Any advice and experiences with steel and pump performance with this type of slurry is appreciated. Thanks in advance.

Mike
5 years ago
Mike 5 years ago

Start with rubber lined, and then try white-iron followed by high chrome/nickle.

B
Reactor
5 years ago
Reactor 5 years ago

Thanks for your suggestions.

AshKot1
4 years ago
AshKot1 4 years ago

I don't know the the static head for your pump, neither suction and discharge pressure for your process.

But usually, for abrasive and corrosive slurries with higher viscosity and density, industrially, people used Air Operated Double Diaphragm (AODD) pumps with material for Diaphragm (which is critical wetted/slurry-contact part) as Hytrel, Santoprene XL, PTFE, EPDM, Neoprene, Nitrile. And for other wetted parts, Polypropylene, Kynar, Groundable Acetal, Alloy C.

Then for non-wetted parts, PTFE-coated Aluminum, Nickel-plated Aluminum, Polypropylene, Groundable Acetal.

look for VERSAMATIC® Pumps by Warren Rupp, Inc. Or Graco AODD Pumps.

Then if the flow-rates and pressures are very high, also pipes are as long as greater than 1 or 2 miles, go for Centrifugal slurry pumps, which are Schruco Slurry Pumps, or Warman Slurry Pumps by Weir Minerals. Make sure you tell them to apply one of the same materials which are mentioned above.

Now you want peristaltic pumps with hose in it for more accuracy and higher flow velocities, visit VarderFlex or Flowrox or Bredel hose pumps by Watson-Marlow Fluid Group. for hose material, same thing, one of the above materials which are used for diaphragms.

I hope I answered all your questions, good luck.

B
Reactor
4 years ago
Reactor 4 years ago

Thanks AshKot1. The device we manufacture is not a pump, however, we need to handle the slurry that is delivered by a pump. I'll work on getting the input pressure from the feed pump and the discharge pressure from our device although we can vary this pressure based on the motor rpm.

SmartDog's suggestions on the type of material to provide the best surface protection against the slurry is our primary interest at this time.

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