TITANOR - Shareholding

ELECTRO WINNING TECHNOLOGY: EMEW®

The EMEW® Cell, which forms the core of new system for electrowinning of dissolved metals from their host solutions has really extended the potential usage of electrowinning well beyond the capabilities of conventional plants.

The high performance is achieved through a hydraulic mechanism, which achieves higher rate of metal ion transport to a cathode than in a conventional electrowinning cells. The EMEW® cell is constructed as a closed cylinder, with outer wall acting as a cathode and the anode comprising a rod running through the center of the cylinder. The ends of the assembly are fitted with plastic end caps, thus forming a closed chamber through which target solution can be pumped at high rate and metal ions are attracted to the cathode through the application of electrical current between the anode and cathode. The resulting high flow and efficient mixing result in forced and continual supply of metal ions to the surface of the cathode. The cell is capable of producing metal powder or plate and, in the former case, harvesting is carried out on a fully automated basis. We can offer plate as well as powder cells as per customer request.

Before the development if the EMEW® cell, electrowinning was performed in open tanks and planar sheets as electrodes (Figure 1). The conventional electrowinning lack flexibility to change in metal concentration, are expensive to construct, and do not suit smaller scale applications. Also they emit noxious fumes generated electrochemical process. In contrast, EMEW® cells delivers a major improvement in efficiency, suits modular construction at all scales and captures all acid mists and gases for safe handling and disposal.

Advantages of All EMEW® cells

High Electrowin Efficiency
Can operate at much higher current density than conventional units, thus reducing plant size
Can electrowin from low grade solutions streams
Can operate over an extremely wide range in grade
Can electrowin from highly aggressive solutions: acid, caustic, chloride etc.
Completely closed system which captures all gases or mists
Modular plant design keeps capital costs low and permit scale up flexibility
Very simple and robust design, keeps operating cost low.

Its usage now covers a wide range of metals including copper, silver, gold, tin, nickel, cobalt, lead and zinc. These metals can be electrowon from wide range of solution chemistries, including acid and alkaline. Across most applications that have been examined and tested, capital and operating costs are lower than in an equivalent conventional tank house. The technology has been patented around the world and has been commercially implemented at a number of locations in Chile, USA, Canada, Europe, Africa, Asia and Australia. We can provide you with local and international reference site, on request.

APPLICATIONS:

Gold	Recovery of gold from low concentration rinse solutions Direct electrowinning of gold from mine leach solutions (replacement of Merrill Crowe)
Silver	Silver electro refining Treatment of photographic waste solutions Direct electrowinning of silver from cyanide solutions (replacement of Merrill Crowe) Recovery of silver from nitric acid
Cadmium	Recovery of cadmium from primary zinc and refinery waste solutions
Cobalt	Purification of primary cobalt leach solutions through direct EW of copper Direct electrowinning of cobalt from leach solutions
Copper	Direct electrowinning of cathode copper from dump and heap leach projects Direct electrowinning of copper powder from dump leach projects Replacement of conventional electrowinning tanks in copper SX-EW Production of copper powder for the powder metallurgical industry Removal of copper from acid mine drainage streams Leaching and electrowinning of copper from copper refinery tank house sludges Recovery of copper and precious metals from gold refineries Treatment of copper electrorefinery bleed streams Recovery of copper from anode furnace dust Recovery of copper from zinc refinery waste High current density electrowinning of copper from SX-EW tank house bleeds Purification of primary zinc leach solutions through direct EW of copper Purification of primary nickel leach solutions through direct EW of copper Recovery of copper from pickling solution - copper parts manufacturers Recovery of copper from pickling solutions - copper rod and wire manufacturers Replacement of cementation of copper from waste streams Removal of copper from general industrial waste streams Recovery of copper from computer chip manufacturing etchant solutions
Manganese	Removal of Manganese from discharge streams
Nickel	Production of nickel powder from primary mine sites (replace conventional EW) Recovery/stripping of nickel from tailings ponds Production of high grade nickel from copper refinery waste materials and solutions Recovery of low grade nickel values from nickel refinery bleed streams Recovery of nickel from electroplating waste solutions
Platinum	Direct electrowinning of platinum for cyanide leach solution Treatment of platinum catalysts
Tin	Recovery of tin from various industrial waste solutions
Zinc	Leaching and electrowinning of zinc from industrial waste materials High current density electrowinning of zinc from mine leach solutions Zinc Recovery from Electric Arc Furnace (EAF) dust Recovery of zinc from spent galvanic pickling solutions

Select the metal for further details: Copper, Cobalt, Nickel, Silver, Gold, and Zinc.