I want to make a rotating reactor in which a mixture of dolomite and lump ore are injected from feed end and air injected from discharge end counter currently with discharge end.
For the rotating part you can either choose Multiple Reference Frames (MRF) or the Sliding Mesh (SM) method and if the total volume of dolomite is less than 10% you can safely use DPM model to inject and track the solid particles.
If you can add more details about the problem, I might be able to help better.