ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,551,903, issued on Feb. 17, was assigned to Metso Finland Oy (Espoo, Finland).
"Method and arrangement for process water treatment" was invented by Kaj Jansson (Tampere, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for treating process water of a flotation arrangement is disclosed. The process comprising the steps of a) dewatering overflow of a mineral flotation circuit in a gravitational solid-liquid separator to separate a sediment from a supernatant comprising water, silica-containing particles and soluble SiO2, fine particles, microbes, and residual flotation chemicals; b) subjecting the supernatant to cleaning flotation, in which...