Hydrometallurgy: Leaching in Heap, Vat, CIL, CIP, Merrill–Crowe, SX Solvent Extraction

Hydrometallurgy: Leaching in Heap, Vat, CIL, CIP, Merrill–Crowe, SX Solvent Extraction

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Recommendation for a blower - small leach tank (2 replies)

J
oro
5 years ago
oro 5 years ago

I want to test a leach tank for concentrates using just a blower for agitation.  Keeping it simple I’ll use two 55 gal drums welded together (vertically), the tank will have a cone shaped bottom and be supported on legs.  

A 3/4” pvc tube is placed inside a 6” pvc tube, both running down the center of the tank.   Air is blown down the small tube and it’s return to the surface creates a venture effect carrying the pulp upwards inside the 6” tube and continuously “boils” at the surface.  

My questions is how to spec the blower and where to buy it.  I searched online but most blowers listed don’t list pressure ratings.  I prefer a common grade, hopefully "off the shelf" blower, not looking to spend a fortune.    

Thank you!

T
Todd H
5 years ago
Todd H 5 years ago
Like

What you are describing is an airlift and you can calculate the pressure required based on the slurry density and the height.  Assuming that the drums are one meter each - for a total height of two meters - and let us assume that you have a solids density of 2.5 and a pulp density of 30% solids, if the pipe is at the bottom you will need +/- 3.5 psi of pressure (say 5 psi for pressure loss and other). Most blowers are in inches of water column capacities and not generally suitable for this purpose unless you get the right kind like a roots blower.  There are pond aeration blowers that might have enough presusre - https://pentairaes.com/aeration/regenerative-blowers

Good luck.

 

Todd Harvey - Global Resource Engineering http://www.global-resource-eng.com

J
oro
5 years ago
oro 5 years ago
Like

I'll check it out.  Thank you Todd!


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