Resources Contact Us Home
Electrochemical reactor for copper removal from barren solutions

Image Number 8 for United States Patent #4911804.

A system for treating a barren solution typically containing a heavy metal such as copper, and complexed cyanide, from a precious metal mill, is treated in a first electrochemical cell to remove the heavy metal and free the cyanide whereafter the treated solution can be returned to the precious metal mill as leaching solution; the barren solution flows through a porous cathode in which the heavy metal is electrochemically deposited, and against an inert anode; the deposited heavy metal is recovered in a sheet form by employing the heavy metal loaded cathode as an anode in a second electrochemical cell, the heavy metal entering solution and being deposited on a cathode sheet typically of stainless steel or titanium from which a deposited sheet of the heavy metal is readily peeled; the porous cathode free of heavy metal can be reused in the first cell.

  Recently Added Patents
Controller for internal combustion engine
Methods and compositions for inhibition of neutrophil exocytosis
Headset electronics
System and method of detecting and locating intermittent and other faults
Position-measuring device
Antenna support device
Schottky diode and method of manufacture
  Randomly Featured Patents
Connector for tubular frame members
Equipment security apparatus
Method of adjusting the impact energy of a letter key or type element of a printing machine and typewriter, printer or the like printing machine using that method
Vibrating massaging mask
Carbocyclic sulfonamides
Apparatus for joining the ends of fabric strips
Well apparatus and method
Lock releasing device of a retractor provided with an emergency locking mechanism
Perpendicular magnetic recording medium