Laboratory Testing & General Mineral Processing Engineering

Laboratory Testing & General Mineral Processing Engineering 2017-04-04T06:57:51+00:00
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Small Flow in Large Pipe (7 replies)

Paul Morrow
2 years ago
Paul Morrow 2 years ago

I have a 23.5" I.D. Pipe that is 60' vertical and open to a tank at the bottom. How would you keep 600 gpm of water flowing upwards in the pipe? How do you keep such a small flow from falling out the bottom? We plan on using an 8" discharge.

Tony Verdeschi
2 years ago
Tony Verdeschi 2 years ago

Install a valve at the bottom.

David Kano
2 years ago
David Kano 2 years ago

If you want a meaningful answer to your question it would be helpful if you filled in the gaps.

Bob Mathias
2 years ago
Bob Mathias 2 years ago

Such a small percentage of the population could see the humor in this. I get it. It is hilarious.

Bill Fraser
2 years ago
Bill Fraser 2 years ago

2 pipes; side by side; same I.D. of 23.5": We want water to go up the left pipe and come down the right pipe where it will be pumped up again. The Catch: The left pipe is connected above an open tank where 22" O.D. diameter buoyant spheres will float up inside of the water being pumped. If we install valves at the bottom then we have to open and close them continually to allow the floating spheres to enter into the up pipe. The spheres are 20% buoyant.

Dizzy Flores
2 years ago
Dizzy Flores 2 years ago

The situation is still not really clear, but perhaps you could make use of a mammoth pump, also called air lift pump. This is an excellent solution to overcome low static heads with a big free ball passage.

Carmen Ibanz
2 years ago
Carmen Ibanz 2 years ago

Is that a larger version of an aquarium pump that uses air bubbles to lift the water upwards? It sounds interesting! Is "Mammoth" a brand or is it a type of pump? I am going to look it up on Google.

https://en.wikipedia.org/wiki/Airlift_pump leads me to believe that the 22" diameter spheres with a density of 800/kg m3 - 20% buoyant in fresh water - will act like bubbles in an airlift pump. Would this cause cavitation of a traditional pump if the discharge were inside the up pipe with water being propelled upwards by buoyancy?

Ace Levy
2 years ago
Ace Levy 2 years ago

The situation is still not really clear.

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