Abstract: A continuous process for dispersing a particulate solid material in a liquid comprising the steps of a) dosing a particulate solid material feed stream via a particulate solid feed line (1) into a mixing chamber (2), b) simultaneously dosing a liquid feed stream via a liquid feed line (3) into the mixing chamber (2), wherein at least one of the feed streams additionally comprises an organic film-forming binder, c) simultaneously exerting a shear force on the content of the mixing chamber (2) sufficient to mix the particulate solid material and the liquid to form a mixture of particulate solid in the liquid, and d) simultaneously exerting a shear force to the mixture of particulate solid in the liquid sufficient to reduce the particle size of the particulate solid material in a dispersing chamber (4) to form a particulate solid material dispersed in the liquid, and e) simultaneously removing a liquid product stream of particulate solid material dispersed in the liquid from the dispersing chamber via a liquid d

Abstract: A method for the use of a porous, preferably dimensionally stable, particulate material in a packed filter bed for separating a disperse liquid phase from a gas and/or separating a disperse liquid phase from a liquid, with the average size of the particles being in the range of from 0.1 to 10 mm and the internal surface area of the material being such that, after it has been filled with the disperse liquid phase to be separated and placed, as a packed bed, at a distance of from R to r from the center in a centrifuge rotating at an angular velocity w, for which it holds that0<w.sup.2 (R.sup.2 -r.sup.2).ltoreq.20 (rad/s).sup.2 m.sup.2,wherein w stands for the angular velocity (in rad/s) and R and r represent the largest and the smallest radius (in m), respectively, of the material in the centrifuge, at least 1% of the liquid will have been separated after 5 minutes, while at least 10% of the liquid will have been separated after 60 minutes is disclosed.

Abstract: A method for the making and use of a porous, preferably dimensionally stable, hydrophobic polymer for the extraction of metal ions from an aqueous solution, with the polymer being in the form of a regenerative granulate or powder having an average particle diameter of from 0.1 to 10 mm and pores of from 0.1 to 50 .mu.m, which is obtained by the dissolving of a polymer, with heating, at a temperature above the upper critical demixing temperature Tc in a complexing agent containing hydrophobic liquid, followed by lowering of the temperature, resulting in a porous polymer filled with the hydrophobic liquid, and the mechanical diminution of the solidified mass is disclosed. Favorable results have been attained using polypropylene as the hydrophobic polymer, bis(2,4,4-trimethylpentyl)thio acid as the complexing agent, and with a mixture of dibenzyl toluene and/or polypropylene glycol ether being part of the hydrophobic liquid.