Abstract: This invention relates to a process for making copper wire directly from a copper-bearing material, comprising: (A) contacting said copper-beating material with an effective amount of at least one aqueous leaching solution to dissolve copper ions into said leaching solution and form a copper-rich aqueous leaching solution; (B) contacting said copper-rich aqueous leaching solution with an effective amount of at least one water-insoluble extractant to transfer copper ions from said copper-rich aqueous leaching solution to said extractant to form a copper-rich extractant and a copper-depleted aqueous leaching solution; (C) separating said copper-rich extractant from said copper-depleted aqueous leaching solution; (D) contacting said copper-rich extractant with an effective amount of at least one aqueous stripping solution to transfer copper ions from said extractant to said stripping solution to form a copper-rich stripping solution and a copper-depleted extractant; (E) separating said copper-rich stripping solu

Abstract: This invention is directed to a process for making copper metal powder from copper-bearing material, comprising: (A) contacting said copper-bearing material with an effective amount of at least one aqueous leaching solution to dissolve copper ions in said leaching solution and form a copper-rich aqueous leaching solution; (B) contacting said copper-rich aqueous leaching solution with an effective amount of at least one water-insoluble extractant to transfer copper ions from said copper-rich aqueous leaching solution to said extractant to form a copper-rich extractant and a copper-depleted aqueous leaching solution, said extractant comprising (i) at least one oxime characterized by a hydrocarbon linkage with at least one --OH group and at least one .dbd.

Abstract: The present invention relates to a process for making copper foil from copper-bearing material comprising:(A) contacting said copper-bearing material with an effective amount of at least one aqueous leaching solution to dissolve copper ions into said leaching solution and form a copper-rich aqueous leaching solution;(B) contacting said copper-rich aqueous leaching solution with an effective amount of at least one water-insoluble extractant to transfer copper ions from said copper-rich aqueous leaching solution to said extractant to form a copper-rich extractant and a copper-depleted aqueous leaching solution;(C) separating said copper-rich extractant from said copper-depleted aqueous leaching solution;(D) contacting said copper-rich extractant with an effective amount of at least one aqueous stripping solution to transfer copper ions from said extractant to said stripping solution to form a copper-rich stripping solution and a copper-depleted extractant;(E) separating said copper-rich stripping solution from

Abstract: An improved method of separating organic solvents from aqueous process streams is disclosed in connection with a copper solvent extraction/electrowinning process. An aqueous solution having droplets of an organic solvent entrained therein is admitted to the upper part of a vertically extending vessel, and air bubbles are passed therethrough from an air inlet near the bottom of the vessel. The aqueous solution is continually removed from a point at the bottom of the vessel beneath the point at which the bubbles are admitted, such that countercurrent flow of the bubbles and solvent occurs. The bubbles bind the droplets of organic solvent and can be controlled to form a froth on the upper surface of the solution within the vessel. The froth can readily be collected and the organic solvent condensed therefrom.

Abstract: A cylindrical grinding mill liner plate support comprising a base portion; means for securing the base portion to the shell of the grinding mill; replaceable corner bumpers detachably secured to each interior longitudinal edge of the base portion; and at least one side panel assembly, detachably secured to at least one side of the base portion. A cylindrical grinding mill liner comprising a plurality of liner plate supports placed in parallel courses along the longitudinal axis of the grinding mill which converts the heretofore circular cross-section of the hollow milling space into a polygonal, preferably square, cross-section.

Abstract: A method and system of maintaining substantially steady state conditions in a froth flotation operation. In the method an aqueous pulp of finely ground ore particles continuously flows into a flotation cell and is continuously aerated by admission of air wherein aqueous pulp of flotation concentrates substantially continuously overflow from the cell. The novel and improved method step comprises continuously monitoring the mass flow of flotation concentrates from the cell and, accordingly, varying the admission of aeration air into the pulp in the cell inversely with respect to the variations in the mass flow of the overflow to achieve steady state conditions in the cell. The system contemplated for continuously maintaining a substantially steady state condition in a froth flotation operation includes at least one froth flotation cell into which flows an aqueous pulp of finely ground ore particles, and aeration means fluidically communicating with the flotation cell for delivering air thereto.