Electrolytic cell for removal of material from a solution

a technology of electrolysis cell and material, which is applied in the field of electrochemical methods and equipment for recovering materials from solutions, can solve the problems of increased sludge disposed on land-field, increased wear, and increased risk of breakage, and achieves the effects of reducing the size of the cell, improving throughput, and increasing the volume of material

Inactive Publication Date: 2006-11-02
GLOBAL IONIX INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005] The present invention builds on the success of the invention disclosed in our copending application by improving the throughput. The invention is

Problems solved by technology

Waste from solutions with unrecovered metal increases the amount of sludge disposed on land-fields.
The use of a mechan

Method used

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  • Electrolytic cell for removal of material from a solution
  • Electrolytic cell for removal of material from a solution
  • Electrolytic cell for removal of material from a solution

Examples

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example 1

[0091] If a single-face rotatable electrode is to be design to treat for instance 40 liters / minute of a copper solution at 150 mA / cm2, the required surface of the cathode is 19635 cm2 and its diameter is 100 cm; keeping the liquid flow rate but doubling the surface area reduces the current by half; since the current density cannot be changed, the surface area can only be kept at its original calculated value by dividing by half the diameter of the rotatable electrode. Hence, the overall size of the electrolytic cell is being reduced by half when the surface area of the rotatable electrode is doubled.

example 2

[0092] If two metals such as copper and nickel are to be electrowon at respectively 150 mA / cm2 and 50 mA / cm2 and tangential speeds of 10.88 and 5.44 m / s, two double-face rotatable electrode mechanically fixed together to the same shaft but electrically isolated from one each other will required a diameter difference of 2:1 and a total applied current difference of 3 / 2:1.

[0093] The invention is more adapted to recover metals from plating processes and mining processes, but can be applied to other types of industries such as metal finishing, metallurgy, pigments and chemical additives. The recovery of metals lowers the amount of generated waste when the apparatus is installed up-stream a wastewater system, thus, reducing the amount of sludge to dispose on land-fields.

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Abstract

An electrolytic cell for the recovery of material as a powder or flakes from a solution, includes a cell cavity for containing the solution, a rotatable electrode in the cavity having a pair of opposite electrode faces, and a counter electrode in spaced and opposing relationship with the respective opposite electrode faces of the rotatable electrode to supply a current through solution in the cavity to permit extraction of the material by electrochemical reaction. A vibrator directs vibrational energy toward the rotatable electrode to dislodge material extracted as a powder or flakes from the solution by an electrochemical reaction.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This application is a continuation-in-part of copending application Ser. No. 10 / 941,900, filed Sep. 16, 2004, the contents of which are herein incorporated by reference.FIELD OF THE INVENTION [0002] The present invention relates to an electrochemical method and apparatus for recovering materials from solution by electrowinning or electrooxidization. BACKGROUND OF THE INVENTION [0003] The concept on recovering materials from solutions by electrolysis is not new. Many industries, such as plating processes, mining processes and metal finishing, produce waste product of solutions containing ions of metals, and recovery of these metals are both environmentally and economically beneficial. Waste from solutions with unrecovered metal increases the amount of sludge disposed on land-fields. Many systems of metal recovery currently use a mechanical device such as a blade, to remove deposited material from an electrode. The use of a mechanical devi...

Claims

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Application Information

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IPC IPC(8): C25D17/16
CPCC25C7/002C25C5/02
Inventor HENUSET, YVES MICHELMOREAU, BENOIT
Owner GLOBAL IONIX INC
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