Hydrometallurgical process using multi-stage nanofiltration

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United States of America Patent

PATENT NO 10174404
APP PUB NO 20150247218A1
SERIAL NO

14422922

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Abstract

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Nanofiltration can be used to improve a hydrometallurgical process in which valuable metal is extracted from ore or tailings by leaching with a suitable lixiviant. The process requires at least two nanofiltration subsystems in which raffinate from a solvent extraction process is treated in a nanofiltration subsystem, after which permeate therefrom is combined with a pregnant solution stream and is treated in a second nanofiltration subsystem. This arrangement can lead to advantages in the amount of lixiviant recovered, in the raw materials required, in the effluent produced, in the size of plant, and in overall cost.

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Patent Owner(s)

Patent OwnerAddress
CHEMETICS INC#200 - 2930 VIRTUAL WAY VANCOUVER V5M 0A5

International Classification(s)

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  • 2013 Application Filing Year
  • C22B Class
  • 312 Applications Filed
  • 280 Patents Issued To-Date
  • 89.75 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20132014201520162017201820192020202120220255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lashkari, Siamak Vancouver, CA 5 11
Mok, Felix Vancouver, CA 7 21
Mumba, Anthony Vancouver, CA 1 0
Ramasubbu, Ganapathy Delta, CA 4 11

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  • 0 Citation Count
  • C22B Class
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  • 6 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges8343301 - 1011 - 20051015202530354045505560657075808590

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