Cyanide Recycling                                                              
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Project at a Glance

Contents on the CD Rom

  • Ion exchange resins can potentially be applied in cyanide recycling to address growing environmental concerns over the use of cyanide during gold extraction.
  • The SXCN Recovery Process is a safe, environmentally-sound method for removing, recovering and recycling the cyanide in effluents
    from gold and silver leaching processes.
  • The recycling of cyanide using membrane technology, which is currently under development, is
    planned to be applied to the gold metallurgical extraction process, where the efficacy of cyanide
    use is hindered due to the presence of copper.
  • Treatment of cyanide solutions and slurries using air-sparged hydrocyclone (ASH) technology can reduce the overall cost of cyanide recovery and re-use.
  • Cyanide is also used in low concentrations as a flotation reagent to aid in the recovery of base metals, such as lead, copper, and zinc.
  • Cyanide in mining solutions is collected, either to be recycled or destroyed after the gold is removed.
  • CANMET-MMSL has extensive experience in cyanide recycling technologies as an economic and ecologic alternative to the destruction methods currently used by the gold industry.
  • Cyanide is a useful industrial chemical and its key role in the mining industry is to extract gold.
  • Cyanide is used in mining to extract gold from ores, particularly low-grade ores, not easily treated through simple processes such as crushing and gravity separation.
  • Safe Cyanide Recovery process is a safe, environmentally-sound method for removing, recovering and recycling cyanide in effluents from gold and silver leaching processes. It is particularly cost-effective for gold-copper ores.
  • Cyanide is removed and recovered using solvent extraction in a Bateman Pulsed Column. The solvent is stripped and recovered using a small amount of caustic solution, and is then returned to the process.
  • Cyanide is any chemical compound that contains the cyano group (C N), which consists of a carbon atom triple-bonded to a nitrogen atom.
  • Currently many mines would be technologically and/or economically unable to operate without cyanide.
General Information
  • Recycling Cyanide
  • About Cyanide
  • Cyanide Management
  • Cyanide - Information on handling, storage and first-aid

Process

  • Biogenic Sulphide for Cyanide Recycle and
    Copper Recovery in Gold-Copper Ore Processing
  • Cyanide Electrolytic Recycling
  • Safe cyanide recovery from gold and silver mining effluents
  • Safe Cyanide Recovery

Patent

  • Cyanide Recycling Process
  • Cyanide recovery
  • Cyanide regeneration process
  • Cyanide recovery by solvent extraction
  • Regeneration of cyanide by oxidation of thiocyanate

Company Profiles

  • Company from Canada
  • Company from USA
  • Another company from USA
  • Company from Shandong Province

Consultancy

  • Consultancy from Canada
  • Consultancy from UK
  • Consultancy from USA
  • Consultancy from New Delhi
  • Consultancy from Australia
  • Another consultancy from Canada
  • Consultancy from Minneapolis

Plant

  • Plant from USA
  • Plant from Canada
Safety Data
  • 1000ppm Cyanide Standard solution (CN-)
  • 14, 18 & 24-Kt Gold Cyanide Free
  • Cyanide
  • Cyanide - Information on handling, storage and first-aid
Application
  • Cyanide Usage in the Gold Mining Industry Under Wet Tropical Conditions
  • The elution of metal cyanocomplexes from polyacrylic - and polystyrene- based ion exchange resins using nitrate and thiocyanate eluants
  • The management of cyanide in gold extraction
  • Gold technology developments and trends
  • An Overview of Cyanide-Its Use, Management and Best Practice
  • Cyanide Recycling

Technology

  • Cyanide remediation: current and past technologies
  • Treatment of cyanide solutions and slurries using air-sparged hydrocyclone technology
  • Recycling of cyanide using membrane technology
  • Mineral processing and metal refining
  • Technology Descriptions

Project

  • Introducing Process Efficiency Improvements
    and Cyanide Recycling at Akbakai Gold Mine
  • Process Efficiency Upgrades and Cyanide Recycling at Akbakai Gold Mine
  • Positive Gold Processing Scoping Study Outcomes

Report

  • International cyanide management code gold mining operation verification audit Barrick Hemlo, Canade
  • Golden cross mine, New Zealand: Closure and Rehabilitation
  • Cyanide Management
  • Assessment of gold recovery processes in Bangalore , India and evaluation of an alternative recycling path for printed wiring boards
  • Annual Report - Cowal Gold Project, West Wyalong

Suppliers

  • Suppliers of Cyanide Recycling
  • Cyanide recycling suppliers

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