Ash Mixer Linings.
We have had good sucess and references with ceramic linings to helix screw sections and also to the double "u" section of the housings.
In particular in the UK power ind, Cement ind and for OEMs in Holland.
The main point to consider is the flight/body gap, and what is required to ensure the machine mixes correctly.
Plastics work harden and can become dislodged, they also
are effected by ultraviolet light and suffer distortion.
Ceramics do not suffer either.
If you need any photos or any data please ask.
In service lifetimes are 40/60k hours without any maintanance. ■
Re: Flyash Conditioning
Trevorh
Thanks for the input
If you have photos available, they would be appreciated
Do you furnish the ceramics as a supplier or are you a "user"?
regards ■
Fly Ash Conditioning
We have made varying experiences with rubber linings made from PU and other materials in the field of mixing and conditioning fly ash.
Due to wear reasons a rubber lining will not last long. The lining is a wear part and latest after one year you may will have to change it.
Ceramic linings might last longer, but is it economic compared to other conditioning technologies which are on the market ?
The best solution is a conditioner without liner.
The wet ash will stick to the wall of the mixers drum. This is the best wear protection you can get.
We have a lot of experience in the conditioning, mixing, humidification of fly ash and most of our mixers are not equipped with a lining.
Have a look to:
www.ava-huep.de
or email to
g.gutmann@ava-huep.de
Guido Gutmann ■
Ash Conditioning Mixers.
Hello Jack,
In reply to your question we are a manufacturer of the
lining materials.
Within our own manufacturing plant we have such equipment,
we have very abrasive alumina/bauxite/corrundum/silicon
carbide raw materials to handle.
We line for third party and OEM equipment.
This type of mixer needs to have abrasion resistance along with the ability to have a surface wich is non stick and corrosion resistant.
Pot ash is another application we have handled with great sucsess.
If you need info/photo.
Email to me on trevor@densit.co.uk
Kind Regards. ■
Fly-Ash Conditioning
Dear Mr. Hilbert,
BHS-Sonthofen GmbH, manufactures single-shaft mixer with rubber-trough, specially developed for fine and abrasive powder moistioning. Capacity upto 300 tph. The body of rubber is vibrating hence self-cleaning type, wear rate is very low. I am attaching a catalogue herewith.
In my personal knowledge, one such mixer is working in India at Kolkata in Thermal Power Plant since 2005 for HCSD (high Concentration Slurry Disposal) fly-ash conditioning.
For details, you may visit website
href="http://www.bhs-sonthofen.com." target="blank">www.bhs-sonthofen.com.
regards
Neelesh Desai
Attachments
single shaft continuous mixers (PDF)
■
Re: Flyash Conditioning
Jack,
Call Scott Equipment in MI.
They modify one of their standard HSB mixers specifically for the power plants to condition fly ash discharged from storage bins.
They have good references, VA power plants.
Regards,
Robert
Zeppelin Systems USA
Sales Engineer ■
What Is The Water Requirement For Fly Ash Conditioning?
Can any body tell me, what is water requiremen for fly ash wet disposal through humidication?
Photo added by Administrator as an example only:
Water Input
Dear ravikanth,
depending on the specificities of the ash, water content may range from 15 to 40%. Then there's a technology where for the first part of transportation (conveyor) a partly humification of ~ 10 % is applied and more water is then added to the flyash later on (until 15 .. 20%).
Consider special transportation means (tube conveyor).
Regards
R. ■
Re: Flyash Conditioning
casing wear is not usually the problem, but tip wear on a compacted bed. Paddle shape is important to resist clogging and wear, but you cannot expect specialised suppliers to hand out proprietary design data to all and sundry. Basic engineering indicates the need to minimise contact pressure and velocity, plus hard wearing contact material on sensitive surfaces and experience in continuous mixing. ■
Flyash Conditioning
We all know that the conditioning of flyash with water in a twin screw type mixer is challenging.
Has anyone developed any experience with linings such a Tivar or other polymers which can either line the mixer or maybe even be constructed into the paddles themselves to help alleviate the sticking problem?
thanks for any input ■