Abstract: A device for treating a mixture for the manufacture of chocolate, said device comprising a cyclic course of a milling vessel and a mixing vessel each having a driving motor for driving the milling members and the mixing members respectively and means connected with the cycle for supplying the mixture to be treated and means for the delivery of the ready product provided with means for adding to the cycle a viscosity-reducing agent.

Abstract: A device for processing rare earths with a grinding vessel having ball-shaped grinding bodies and an agitator for rotating the bodies, said vessel having a connection for the supply of liquid hexane andhaving near the bottom a tapping opening communicating with an evaporation vessel, said vessels having connections with a vacuum source and for the supply of rare gas, the evaporation vessel having an outlet for the ground product, and an outlet for the vaporlike products communicating with a condenser, the outlet of the condenser communicating through a control vessel and a hexane supply vessel with the inlet of the grinding vessel.