Drying Sand

Posted in: , on 9. Jun. 2021 - 18:19

Good afternoon all

One of our clients is looking to dry sand which will be used to produce dry mortar in silos

We are looking at drying circa 40tph with a moisture content around 7% at the inlet

I have had a few quotations for drying units, one being rotary drum and two being fluid bed type

Could anyone give me their thoughts as to pros and cons for either drying solution

Re: Drying Sand

Posted on 9. Jun. 2021 - 11:07

Hi Andy

The only pros and cons that I can think of off the top of my head are:

Rotary Dryer

Pros

Less energy requirements (HP) with only 1 drive motor.

No fan requirement.

Cons

Typically needs a higher source of heat than a FBD.

Higher maintenance costs due to trunnion bearings, wear etc.

Fluid Bed Dryer

Pros

Simpler system than an RD.

Very minimal guarding required.

Very easy to maintain.

Cons

The FBD typically would need a dust collection system (cyclone) to capture dust in the fan exhaust.

Higher energy requirements for multiple fans and vibration motors.

Balancing of fans can be tricky especially in a heating then cooling system.

I have worked with both systems and my personal preference is the Fluid Bed Dryer.

Gary Blenkhorn
President - Bulk Handlng Technology Inc.
Email: garyblenkhorn@gmail.com
Linkedin Profile: http://www.linkedin.com/in/gary-blenkhorn-6286954b

Offering Conveyor Design Services, Conveyor Transfer Design Services and SolidWorks Design Services for equipment layouts.

Re: Drying Sand

Posted on 10. Jun. 2021 - 09:05

Thank you for your thoughts Gary

Would i be correct in thinking the Fluid Bed Dryer option would give a smaller footprint

My client is looking to put the system inside a building (filter system could go outside) so smaller footprint may help tip the scales