To help, we need more information about the nature of your problem such as sticking in the dryer, cannot fully dry the product, etc

We also need to know

Feed material, filter cake or slurry, solids concentration? thixotropic. are there lumps in the feed material?

Finished Product, desired product moisture and particle size

I look forward to hearing from you

Richard Ozer

Crown Iron Works ■

Dear Sir:

We can most likely dry the SALP in one of our continuous Thin Film Dryers.

We assume that you would be evaporating water at atmospheric pressure using steam heat at about 10 atmospheres (180°C).

We would need to know more details about the process such as:

Feed wetness (%water)

Powder dryness required ( % water, PPM etc)

Flow rate

Scope of supply required

Batch or continuous - if batch then size and time of each batch

Value of final product. Rotating equipment is more expensive to buy than say spray driers therefore the product value must justify the higher installed cost. If you give us the required duty information (rates, moisture etc) we can give you a ballpark estimate for a quick evaluation.

Jim Pauley

LCI Corporation

704-398-7882

PS:

The Combi:

This is two thin film dryers in series. The first is vertical and designed to take thin slurries or solutions and dry to a free flowing wet or damp powder. It can boil up about 100 kg/hr of water or alcohols per sq. meter of heated surface and about 200 kg/hr of organics per sq. meter. The vertical dryer is followed by a horizontal dryer that can finish the drying (down to PPM levels if required) and / or cool the powder for discharge. This system

can be run under vacuum or at atmospheric pressure. The Combi is always run as a continuous operation.

The Rovactor is similar to a paddle dryer but is truely a DISH dryer the machine can be run under vacuum or pressure. It can be batch or continuous.

The rotor and body are heated with most of the heated area in the wedge shaped rotor disks. The body is a U shaped trough with cleaning pins extending from the top cover down between the disks for cleaning.

The Reactotherm is similar to the Rovactor but has hooks that clean the rotor completely. The heated body is round. The machine can handle extremly difficult applications with fouling, phase changes, viscosities etc. ■

Jorge -

As you are hearing from others, the selection of an appropriate dryer requires more information on your process -- what moisture is being dried (water, solvent?) and how wet is the SALP? What are the material's flow characteristics when wet? Are you interested in batch or continuous operations? How much SALP are you processing? What temperature constraints do you have with SALP?

In our case, we specialize in vacuum drying processes but you may be able to use a less expensive approach. What are you using now and what are the difficulties you are experiencing? Even if our products are not right for your application we can certainly recommend a quality supplier based on our longstanding experience in process equipment industry for almost 100 years.

Warren Fuller

PAUL O. ABBE

973 256-4243 ■

We are an organisation providing Process Engineering Technology and we specialise in the unit operations of Mixing and Drying.

If we are not mistaken, the above product can be effectively dryed in a Rotating Tray Dryer on a continuous bases.

We can make an offer if we have the following basic data:

1. Physical Charecteristics before and after drying.

2. Bulk density before and after drying

3. Moisture content on wet basis before and after drying.

4. Material of construction of contact parts.

Your communication be return mail will be appreciated in case you wish to have an offer.

Regards,

Swaminathan

swaminathan45@rediffmail.com ■

Dear Jorge,

yes as already posted, one needs to know

what is upstream of the drying operation

the characteristics of the feed,

the same for the producand its end use values

along with the mass flow rate and the conditioning you plan.

one needs to know the process as a whole.

Best Regards,

Pierre ■