Dust Supression

a fresh water spray would work. Oil would work too, but can the light oil be tolerated by what uses the alumina later on?

A lot depends on various things like that.

Thanks for your input, unfortunatly using a fluid to supress the dust is out due to it setting the alumina lke concrete.

Electrostatic? Surely someone specializes in such a system.

I think this is a conveyor moving dried alumina (essentially dried clay) across a fair distance and as it get to the end the changes in the flow make a lot of dust. Slight stays of water might work, but clay is like glue and that may not be tolerable.

The alumins probably purs into a hold and water might make a large ship hold shaped lump/

They can try briqueting with water and an automated press, then a slight bake to harden the briquet.

There are three ways to minimize dust emmissions through displacement

First way is to spray mist on the product as it falls. This might not be a good option if you have to keep the moisture content low or if it turns into something really hard, but it can be the most cheapest. I also see on an earlier reply that this is not good at all.

Second option is to use a loading spout. This contains the area of the falling product so it will keep dust emissions down. This can be expensive.

Third way, is to use a dust collector at the base of the loading areas that might collect any airborn dust. This might not be the most effective if your system is poorly designed. The hoods have to be positioned really close becasue hoods have deminished perfromance thr further away it is placed from where the dust is being created, but it can be a middle road solution in terms of investment and performance if done by someone who understands dust and air movement. I have designed similar projects for people in the past for around $2,500 that have worked fine for them, because I don't hear them complain about it anymore.

On the other hand, I have watched other people try to design their own dust collection system and they wind up wasting a lot more money and a lot of their time (they could have being doing on more profitable things) designing a system that didn't work. It can be easy to underestimate these systems (and not very forgiving).

You can contact me at edatkinson@dustcollectionsystemsinc.com. I would like to learn more about your problem and how I might be able to help.