Energy input during agglomeration for magnetic separation

Method for separating particles from a mixture that includes first type particles and second type particles, the method comprising:

• (A) contacting in a dispersion medium that includes water the first type particles and the second type particles with magnet type particles, wherein before or during step (A) the first type particles and the second type particles are milled to particles having a size of from 100 μm to 250 μm,
• the first type particles and the second type particles together have a concentration between 10 and 70 wt.-% in the dispersion medium, and in the dispersion medium the first type particles agglomerate to the magnet type particles to provide magnetic agglomerates;
• (B) separating the magnetic agglomerates from the second type particles by applying a magnetic field;
• wherein during step (A) an amount of deformation energy of 0.05 to 1 kWh/m3 is transferred by stirring of the dispersion medium, the first type particles, the second type particles and the magnet type particles.