ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,725, issued on Jan. 13, was assigned to Maelgwyn Mineral Services Ltd. (Cardiff, Great Britain).
"Mineral liberation machine" was invented by Rainer Maria Imhof (Tostedt, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A mineral liberation machine comprising vertical wet grinding mill (10) for grinding coarse material comprising a cylindrical housing (14) containing a rotatable shaft (15) creating an annular channel (17) with an input feed (16) for supplying coarse material and an output feed (18) for withdrawing ground product, in which the rotatable shaft (15) is equipped with a plurality of rotor discs (20) and the cylindrical housing (14)...