If you are new to element 3D you probably won't be able to make that happen. Effects like that are pretty top of the line and I'm not even sure if element 3D would support something like that. that was most likely created with Cinema 4D. are you trying to do it in a real life shot or is the entire scene built digitally?
you need two groups with the same number of particles with that shape, emmited in a ring shaped object. the anchor should be on the botton. Rotate the second group's particle by 180 degrees in the X axis. Use a Sphere animator to transition between groups. (I'm not sure you can get that randomness though).
For the texturing I would have two instances of that element layer. One with just ambient occlusion with everything white just so I'd multiply the shadows. The other should be one side white (on the particle shape) and one side black so you could use it as a luma matte for anything you'll want to transition to.
You can get pretty close to that using element. But that was probably done in a full 3d application.