how to make this conveyor effect?

how to make this conveyor effect, like that in the attachment?

there are coals on conveyor.

In the download section is an example for a mass flow conveyor:

http://www.flexsim.com/community/for...?do=file&id=17

Maybe this example gives you some ideas and hints.

Beside this, the question is, what do you really want to simulate. Or do you mean you just like to see the visualization of such a conveyor?
Coal is in my eyes more an continous process, depending on what the target of the simulation is.
If you like to have a discrete process it it worth to think about which size an increment of coal should have.

Anyway, I did once a project in mining area with coal and we simulate it as a discrete process, where one inrement was around 1 ton of coal. And the visualization of the conveyor was not really important. It was enough to see if they are moving and if there is material (coal) on them.

Thank you, Tom.

I just want to show the visualization of such a conveyor.

My first thought is to import coal image to flowitem, then put it on the conveyor.

But I wonder if this method is good. Or maybe there is a better solution.