Designing a Conveying System for Silica

Posted in: , on 14. Dec. 2010 - 04:58

Require advice on designing this conveying system. (silica)

Dear all,

I would appreciate if anyone could provide me with advice on sizing the blower (flow rate / pressure drop, etc.) for the following system.

Material: Silica. Dry and amorphous

Size: < 0.5 microns

Density: 2.3 kg/L

Transport rate: 20 kg/min.

Pipe size: 100 mm (4 inch) - flexible, can adjust.

4 long bend elbows

Thank you,

Regards,

Yong Tze Shoong.

Re: Designing A Conveying System For Silica

Posted on 14. Dec. 2010 - 10:00

Dear Mr Yong Tze Shoong,

The submitted information is not sufficient for answering your question.

- horizontal length?

- vertical length?

- vacuum- or pressure system?

- feeder system?

Have a nice day

Teus

Teus

Re: Designing A Conveying System For Silica

Posted on 15. Dec. 2010 - 09:43

Dear Mr. Teus,

Thank you for your reply.

The system is as follows:

1) Source of material : bulk bag.

2) My plan is to use a 4" pipe to suck the silica directly from the bulk bag. One worker will manually handle the suction pipe.

3) The pipe goes to a blower. The conveying distance is appoximately 5 meters with 2 long bends.

4) There will be another pipe, 4" as well, to transfer the silica to the destination, which is around 5 meters and 2 long bends as well.

5) The difference in elevation is about + 2 meters.

Thank you,

Regards,

Yong Tze Shoong.

Re: Designing A Conveying System For Silica

Posted on 15. Dec. 2010 - 10:44

Dear Mr Yong Tze Shoong,

For a bulk bag unloader, you can f.i. visit:

http://telschig.com/

The installation, which you describe, suggests that the silica is sucked from a bulk bag and passing through a blower.

This will destroy the blower.

In a suction system, there must be a filter receiver system and a way to get the (5 micron) silica out of the vacuum zone.

A rotary valve for 5 micron particles does not seem an option, due to gap leakage and wear.

A blower volume of 0.08 m3/sec (5 m3/sec) could be a start for calculations.

Success

Teus

Teus

Designing A Conveying System For Silica

Posted on 8. Feb. 2011 - 10:55

Dear Mr Yong Tze Shoong,

If you have approx. 5 m3/min pressurized air (min 3 bar (g)) available, I would recommend to use an ejector nozzle where a worker sucks manually the silica in and blow (using a hose) the material to te desired destination. It´s the best and also cheapest solution for your problem.

Best regards

Klaus Schneider (KS-Engineering)

(We keep your bulk goods moving!)