How to convert PhysX to Particles? Or How to fracture particles?

[Alexx31]

@Alex
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Although, it's not very suitable for fragments, because it have spherical type of collisions, so fragments edges will not be affected (you can never cover fragment with spherical collisions perfectly).
So, that's why PhysX is suitable for this.. because it can collide particle convex shapes.

Thanks, I think this could be what you have mentioned, although I'm not sure if I understand it right.
Attached my test screenshots and scene:

I wanted to have particle shapes to be fractured.It only worked with PhysX.

Can you see, what I'm doing wrong?