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Powder mixing device, characterized essentially by the fact of consisting of a grooved and inclined container, inside which is rotatably arranged an archimedes screw connected with a driving mechanism in rotation in an upward direction, so that the materials to be mixed are lifted by the screw and dropped freely above the mass, while being subjected to a transverse turbulence, producing an intense mixing of particles at all points of the mass. (Machine-translation by Google Translate, not legally binding)
Method and apparatus for forming black carbon pillars apparate from black carbon dry and loose. (Machine-translation by Google Translate, not legally binding)