I would have thought just heating it would be sufficient to dry it out?

How did you measure the moisture content? I bet you used an infrared lamp and accurate scales to measure the weight loss as the heat was applied... In which case heat it up to dry it...

John.

Rajesh,

One way of drying is transfering CB to bags that are made (decicant sandwiched between two layers of bagging layers) with decicant filled.

Second: Store in a room that has very low in humidity. Humidity/moisture transfers from high to lower humidity

Third: Inconjunction with the above,you can also use dehumidifiers too,

Venu

venu.p.bodepudi@lmco.com

Warm it to 105°C -hOld afew minutes--Done

OR

Warm it to 60°C -- and Vaccuum it -- Done

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I agree. The heating to 105C and checking to verify the level of moisture with time will tell you when it has dried out.

What sort of volume and (How dry?) warm air is best the air should also be 100% dry. Passing the air through caustic soda, or quick lime will dry it.

You pass hot air through it.

Use a hot air gun. Modern one have temperature and blower controls, and various attachments.

You need as high a temperate as possible (short of setting fire to the carbon or equipment) and a long duration. Vent the 'steam' away from the gun inlet.

Uh, I wouldn't do that. The carbon black will end up dispersed in the air stream quicker than you can say Bob's your uncle.

Reminds me of the old dorm prank: put a sheet of paper on the floor. Sprinkle one half with talcum powder. Slide that half under the door of the victim's room. Get a blow dryer and crank it up to full speed. Hold down your end of the paper. Put the air stream on the paper and fill the room with a cloud of powder.

I can imagine the mess that carbon black would make, especially since it's conductive! Almost as much fun as painting doorknobs with phenolphalene....

Eric,

Thanx for the suggestion i would like to sprinkle some of carbon black at your door step too.

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Define "some". 100 gm? 100 Kg? Typically, heat and/or vacuum are used to remove excess moisture. For very large amounts, you might even spread the carbon black out in the sun on a plastic sheet, like drying rice, assuming there's no wind!

Thanx for the response please note that quantity is about 15,000 kilogram i think sun drying is best to do but looking at quantity need to have a large space,

Any other comment please.

Further to post 5 and 6, I assume the carbon black is held in a container.

You need just enough air to fluidise the bed - and a filter to stop what dust there is.

A lot depends on the scale of the operation.