MetaLeach™

Overview

  • Exclusive North American & European licensing agreement for the sale of MetaLeachTM’s processing technologies
  • Agreement details – Split profits 50% / 50%.
  • Technologies include AmmLeach®, NickeLeach®, HyperLeach® and MoReLeach®Developed over more than 10 years with global research & development
  • Protected by a rigorous intellectual property strategy, including a comprehensive suite of patent applications in targeted countries globally

Advantages

  • Reduces capital and operating costs and/or improves recoveries
  • Enables the treatment of base metals deposits that were not treatable with traditional processing methods
  • Especially suitable for high-acid-consuming carbonate (oxide) hosted ores
  • Potential operating and capital cost savings of 30-50% vs current technologies.
  • Offers a reduction in carbon footprint
  • Targeting miners of raw materials essential for the global electrification revolution

Overview of Technology

Product

AmmLeach®

HyperLeach®

NickeLeach®

MoReLeach®

Equipment

no special equipment required, small standard SX plant size for production

heap leach or tank leaching

heap leach or tank leaching

highly selective leaching, separation and precipitation

Commodity Focus

high selectivity for target metals, does not react with iron, Ca, Mg, Al, and removal of CN-soluble Cu from gold ores

selective for Cu, Ni-sulphides over pyrite, selective for sphalerite over galena. Low dissolution of Fe, CA, Mg. etc.

selective leaching of nickel and cobalt. Much lower reactions with Fe/Ca/Mg than conventional leach

selective for molybdenum and rhenium ores, concentrates and tailings including leaching Mo/Re from copper flotation concentrates

Temp/Pressure

ambient temperature and pressure, Heap or VAT Leaching

rapid kinetics at ambient temperature and pressure. Reducing tankage and agitation costs ambient temperature and pressure, Heap or VAT Leaching

ambient temperature and pressure, Heap or VAT Leaching

Economic Benefit

minimal decommissioning costs, reagent recycle

low reagent consumptions, can use high salinity water low operating costs

high selectivity for Mo/Re

Other Benefits

minimal reagent costs, ammonia can be 100% recycled; single leaching plant from oxide cap to primary sulphides with minor changes. Low purification requirements cutting opex

can regenerate reagent using renewable energy Can produce a nickel cathode product and cobalt hydroxide.

leads to copper grade increases and reduction in penalties in copper smelter

Elements/Minerals

ammonia reacts with Cu, Zn, Ni, Co, Mo, roaster concentrates; can treat oxides and sulphides

leaches base metal sulphides including the following: chalcopyrite, bornite, chalcocite, enargite, millerite, pentlandite, pyrrhotite, violarite, sphalerite Selective leaching of Ni and Co, with improved metal recoveries into solution

Selective leaching of Mo and Re

Environmental footprint

low, no roasting or acid plant. Residue is effectively environmentally neutral, essentially fertilizer in many cases

environmentally friendly compared with smelting; no roasting or acid plant required.

reagents are recycled