Basf Se Corporation

Cognis IP Management Gmbh

Basf Corporation

Nathan Clark Emmerich

Jack Thomas Bender

Michael J Virnig

Russell Vincent Brewer

Lauren Michele Hight

Lauren Michelle Hight

Jack Bender

Michael Joseph Virnig

Leaching aids, for example, when present in a leaching solution, and methods of using the leaching aids. The leaching aids can include one or a combination of compounds. The method of using the leaching aids can include a process of recovering metal from ore, for example, a process involving heap leaching, solvent extraction and electrowinning.

Leaching aids and methods of using leaching aids

Disclosed are methods for the reduction of impurity metals from a refinery electrolyte solution. Certain methods comprise contacting a refinery electrolyte solution comprising an impurity metal with a phosphate ester having a structure represented by: wherein Rcomprises a linear, branched or cyclic alkyl or aryl group, and wherein the impurity metal is selected from the group consisting of iron, antimony, arsenic, bismuth, tin and combinations thereof.

Methods and systems for reducing impurity metal from a refinery electrolyte solution

Reagent compositions, methods and systems for reducing concentrations of impurity metals during metallurgic processes. Certain methods and systems in particular pertain to control of iron concentration in copper electrowinning electrolyte solutions.

Methods and systems for controlling impurity metal concentration during metallurgic processes

Provided are methods using a ketoxime in metal extraction. One aspect of the invention relates to a method for the recovery of metal from a metal-containing aqueous solution at an elevated temperature using a ketoxime. Another aspect relates to a method of separating iron/copper using a specific ketoxime. Aldoximes may also be added to the reagent compositions used in these methods.

Compositions and methods of using a ketoxime in a metal solvent extraction reagent

Provided are methods method of recovering metal from an aqueous solution, the method comprising contacting an aqueous solution containing at least two metals selected from molybdenum, cobalt, nickel, zinc and iron with an organic solvent and an oxime-containing reagent composition at a predetermined pH, the predetermined pH selected to provide a high first metal extraction and a low second metal extraction; and separating the first metal from the solution.

Methods of metal extraction using oximes

Provided are methods for maintaining the ratio of the oxime to equilibrium modifier concentration in solvent extraction circuits, said solvents essentially consisting of at least one ketoxime and/or aldoxime; at least one equilibrium modifier; and at least one diluent.

Method for maintaining the ratio of the oxime to equilibrium modifier concentration in solvent extraction circuits

Compositions and methods of using a ketoxime in a metal solvent

Reagent compositions, methods for their manufacture and methods of their use are described. In particular, provided are reagent compositions comprising an aldoxime and ketoxime with an alkyl substituent. Also provided are methods of metal recovery using these reagent compositions.

Metal solvent extraction reagents and use thereof

Provided are methods using ketoximes and/or aldoximes, including 3-methyl-5-alkylsalicylaldoxime and/or 3-methyl-5-alkyl-2-hydroxyacetophenone oxime, in reagent compositions for metal extraction/isolation. One such method is of extracting a metal from a nitrate-containing aqueous solution. Another such method is of extracting a metal from an aqueous ammoniacal solution. A third method is of multi-metal extraction based on a predetermined pH.

Provided are methods using ketoximes and/or aldoximes, including 3-methyl-5-alkylsalicylaldoxime and/or 3-methyl-5-alkyl-2-hydroxyacetophenone oxime, in reagent compositions for metal extraction/isolation. One such method is of extracting a metal from an aqueous ammoniacal solution. Metals that can be extracted include nickel, zinc and copper.

Growing community of inventors

Tucson, AZ, United States of America

Nathan Clark Emmerich