CIL/CIP & Elution + Electrowinning

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  • gold electroplating rectifierelectrowinning rectifier
    gold electroplating rectifier electrowinning rectifier
    ISM Series switch mode rectifiers feature the latest advances in Italian switch mode technology, offering superior performance in an extremely small package compared to traditional transformer based SCR rectifiers, freeing up on space and saving on energy costs. In addition these Electroplating rectifiers provide substantial power savings, with ISM series rectifiers having super-fast response time and high-power factor (>0.9), very low current ripple and high stability to load variations. ISM series rectifiers are software controlled and modular in design, allowing for many different options to ensure your rectifier best suits your process. The ISM series can be linked together with up to 4 units all operated from one controller when equipped with one of the optional Devicenet, Profinet, Modbus or Ethernet IP based communication cards, allowing these systems to best fit your current system architecture while offering upgradeability at minimal cost for future expansion. ISM series Electrowinning rectifiers are designed specifically to meet the harsh conditions typical in mining environments. ISM series rectifiers are self-contained units that are engineered to meet IP54 and thrive in both hot and cold environments to 50°C. ISM series rectifiers are equipped to deliver 0-5V or 0-10 VDC voltage or current control with ranges from 0 to 1020A, 1530A, 2550A and 3570A. Other output voltages are available on request. electrowinning rectifier ISM series rectifiers, take advantage of clever design and advances in technology, are competively priced and available in short leadtimes if not available in stock. A wide range of accessories are available, including a remote-control panel equipped with a 3 channel 4-20 mA IO for remote PLC control. Rectifiers are available in design specifications to comply with CSA UL and CE standards.
  • gold electrowinning cell (4)gold electrowinning cell (2)
    gold electrowinning cell (4) gold electrowinning cell (2)
    High quality gold and precious metal electrowinning cells. Manufactured from brushed finish 304 grade stainless steel. Internally rubber lined the cells are equipped with punch plate 316 grade anodes and cathode frames. Cathode frame support either wrapping of mild steel or stainless steel wool for plating and sludging operations respectively, or alternatively accommodate pre-manufactured cathode sleeves. The design incorporates unique features including:
    • Available in CSFR (non CIP version) and CSCIP (Clean-In-Place) design
    • Mezzanine mounted or self standing models
    • Near neutral balance lid opening which doesn’t require either counter-balance of lid lifting devices
    • Busbars located out of the process zone, near eliminating corrosion issues and corrosion voltage drop losses
    • Cross flow air extraction design provides electrode busbar cooling
    • Easy drop in locating busbar bolts providing high contact electrical connections not possible with clip-connection designs, minimising joint hot spots and no loss of connection nuts
    • Optional CIP (Clean-In-Place) facility enables the anodes and cathodes to be separated in-cell, virtually eliminating the need for alternative pressure wash stations (CSCIP series)
    Standard frame sizes include:
    • 600 x 600
    • 800 X 800
    • 900 X 900
    • 1000 X 1200
    Cathode numbers customisation including: 9, 10, 12, 15, 18, 21, 24, 30 cathodes. Suitable for AARL, Pressure Zadra, Gravity Electrowinning and Polishing processes in gold and silver recovery. Sizing optimisation and process modelling available for selection.
  • elution column
    Our Elution and Acid Wash columns are optimally designed for plug flow of eluate or fresh water for eluting gold cyanide complexes from activated carbon recovered from CIP/CIL gold adsorption circuits. Designed and constructed to a range of available pressure vessel codes, including ASME VIII, EN13445, B51-14 or AS1210, the vessels can be manufactured from carbon steel boiler plate for Pressure Zadra applications, or higher grade SS316 or SAF 2205 duplex stainless steels for specialist applications where dual elution/acid washing capabilities are required. Available with semi-ellipsoidal or torospherical dished ends,or alternatively cone base for reduced column base transfer wear. The vessels are equipped with flanged integral Johnson screens on the inlets and outlets, allowing for easy removal of the filters to remove any entrapped sand, organics or plastics. Vessel supports can be adjusted to suit clients existing structures or can be provided in a self contained support structure which can be transported in standard sea containers to their final destinations. Vessel aspect ratios are design specifically for the specific elution process. The elution vessels are externally primed with in encapsulated inorganic zinc silicate before being wrapped in 50mm thermally insulating Superwool fibre and clad with stainless steel lagging. The Acid Wash vessel are provided either in SAF2205 form or rubber lined carbon steel. Carbon steel acid vessels are externally painted with two pack hard epoxy coated for enhanced weathering resistance and are rubber lined with high quality 6mm Bromo Butyl rubber. Also available in regeneration carbon transfer/quench vessel designs.
  • carbon regeneration kiln (2)carbon regeneration kiln (2)
    carbon regeneration kiln (2) carbon regeneration kiln (2)
    Our Custom Rotary Kilns are based around process first and foremost. Designed to ensure correct residence time at hold temperature of 20 minutes -not 10 minutes, they ensure stable progressive feed of your carbon with reliable three zone heating with independent controls, robust thermal lifter designs, co-current movement of reaction products and correct thermal conduction area and bed thickness defining retort size. In Gold Adsorption carbon activity is your most important factor. Guaranteed 90%+ regeneration activity for fresh carbon. Rotary Kilns also available for other processes, including uranium pre-drying and roasting, fly-ash treatment, reactivation processes and more. TURN KEY AND AUTOMATION PACKAGE AVAILABLE ON REQUEST
  • cadia systems 500kw direct eluate ss coil heatercadia systems 500kw direct eluate ss coil heater
    cadia systems 500kw direct eluate ss coil heater cadia systems 500kw direct eluate ss coil heater
    Our systems of direct eluate and indirect thermal oil heaters are manufactured to a high quality specification. Customisable to satisfy our customers’ needs in both the gold mining industries and other industrial heating applications, they permit both direct fluid heating or indirect heating through provision of associated plate or tube and shell heat exchanger systems. For direct heating – particularly of eluate (caustic-cyanide solutions) in gold mining, our horizontal stainless steel 3 pass helical coil design is optimised to reduce the incidence of caustic fallout. Ideally suited for Pressure Zadra solution heating, Our extensive experience with elution provides you with the confidence of a highly efficient and long lifetime heating solution. The heaters cylindrical design provides two helical coils manufactured from schedule pipe arranged to raise the temperature of the circulating fluid by radiant and convective heating from combustion of either diesel or gas in the front mounted burner system. High density rockwool insulation between the two casings provides for low temperatures (30-40°C) in the outer casing, minimising thermal losses through the structure and preventing burns from unintentional contact with the boiler. Direct stainless steel helical coil heating provides you with the following benefits:
    • Comparatively low capital outlay compared with indirect thermal heating systems
    • Simplistic design with low maintenance requirements
    • Unattended boiler operation in most jurisdictions due to the coil design versus a pressure vessel heating volume
    • No thermal shock and stress corrosion of low cost, low lifetime fire tube direct heater designs
    • Long life stainless coil construction For indirect thermal oil heating, we can provide options of both horizontal or vertical configurations. There is no functional difference between a horizontal thermal oil heater and a vertical thermal fluid heater, with the choice being made according to the available space and height in the plant, and ease of maintenance.
    • Our thermal oil heaters provide heat through liquid fuel (HFO, light oil) and/or gaseous (natural gas, propane, etc.). A thermal oil heater is the main component in a thermal fluid heating system, where a liquid fuel is heated and circulated to provide energy to different energy users within a closed circuit.
    • Automatic running of the heater and indirect surveillance.
    Thermal oil heating system have numerous benefits including:
    • Our thermal fluid heaters operate without reduced pressure and no water generated steam. This avoids the typical problems related to steam heating systems, such as leaks, corrosion, water treatment, etc.
    • Thermal oil heaters require low maintenance.
    • Fuel savings up to 20% compared to steam heating systems. A thermal fluid system consists of a closed circuit with minimum energy leaks. At least 90% of the fuel is used in the heating process.
    • Thermal oil heating systems are highly efficient thanks to the temperature uniformity through all the production process.
  • stainless electrowinning mesh (2)
    Stainless steel twin wire cathode mesh manufactured from SS316L grade materials for winding of cathode frames in sludging electrowinning cells. Twin wire wound mesh manufactured from 0.152 mm diameter wire providing high surface area for precious metal electrowinning. Available in rolls of tubular mesh in 230mm wide and 460mm wide rolls of 50 meters. Surface area typically ~3840 g/m2 Also available aftermarket anodes, cathode frames and cathode pillows.

 

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