Producing oxidic compounds

Producing oxidic compounds comprises heating mixtures comprising oxides, hydroxides, carbonates and nitrates of lithium and of elements from groups 2-12 together to 600-1200[deg] C in a reaction vessel performing incomplete rotary motions about one axis. Producing oxidic compounds of formula (Li zM xO y) (I) comprises heating mixtures comprising oxides, hydroxides, carbonates and nitrates of lithium and of elements from groups 2-12 together to 600-1200[deg] C in a reaction vessel performing incomplete rotary motions about one axis. M : elements from groups 2-12, preferably Co, Mn, Ni, Fe, Al or Mg; x : 1-2; y : 2-4; and z : 0.5-1.5.