To advise on any handling system it is necessary to know both the duty and the condition of the material to be handled.

Both paper sludge and fly ash have been mentioned and there are many methods that can be used for either, depending on the duty, i.e. scale, distance and function. A little more information may allow more detailed comment. ■

Strictly speaking, slag is usually produced at very high temperatures and it is often molten. That is not conducive to pneumatic conveying because at those high temperatures the filter bags get burned out. Please provide a concise definition of the slag in question. ■

The questioner assumes that slag is only conveyed pneumatically.

This can certainly not be molten slag or un-ground slag.

Leaves us to the guess, what slag is in the mind of the questioner?

My guess is something in the cement industry. ■

Slag is also a term used in coal mining describing the waste from the mining operation. The OP needs to confirm his definition of slag before anyone can give an answer to his query. ■

Dear Subhashis

Definitely not pneumatic conveying. ■

DEM would be unreliable to say the least. So forget it. As far as is known (published) DEM is only used for 2 phase materials. To expand: most bulk materials comprise solids of varying sizes and chemical composition; gaseous voids and free or inherent moisture. The variation in material properties is enormous and probably the reason that no individual or body knows precisely what will happen throughout a process. That alone makes the process of handling known liquid chemicals, however hazardous, comparatively easy.

It is not heresy to suggest that bulk solids handling relies, exists even, on the basis of the unknown. Expertise is applied in the face of overwhelming ignorance. A change in moisture content often gums up a plant which worked quite well while the original limitations were in place.

In you case the conveyed distance and rout are very relevant as also is the particle spectra. Please provide more information. ■

Dear Mr. Dey,

If it is not too sticky we can transport the slag with a conveyor, with special belt and scrapper.

I need more info regarding capacity and available space.

Best regards,

Naud Luijerink nl@jesma.com ■