Gold Processing Equipment

As modular elution and goldroom specialists, no Como Engineers goldroom is complete without one of our centre-tilt, electric gearbox-driven Gold Barring Furnaces.

Designed for easy maintenance, the furnace is fired by a high-low packaged burner (or optionally an AFR-type burner) and can be supplied in Natural Gas, LPG, Diesel or Electric heating configurations.

Available in A150, A200, A300 or A400 configurations, with top-pivoting designs available for larger custom requirements.

Como Engineers supplies a range of high-quality electrically heated or AFR-fired units, including Calcine Ovens for calcining mild steel wool and Cupellation Furnaces for treating dorés containing lead and arsenic.

The equipment is manufactured from 2 mm stainless steel plate, lined with insulating firebricks and Superwool insulation, and finished in hammertone enamel. Standard capacity is 290 L.

Como Engineers produces a range of pressure vessels designed specifically for the gold processing industry. They can receive loaded carbon from the CIL/CIP loaded carbon screen for intermediate storage, or serve as quench tanks at the discharge end of carbon regeneration kilns.

Because carbon is delivered into a sealed vessel, exposure of hot carbon to oxygen is minimised, ensuring optimum product activity from your regeneration kiln compared with the open-top carbon quench vessels used on many mine sites.

Como Engineers offers a range of linear vibrating sizing screens with either wedgewire or polydeck screens.

We also supply our proprietary Static DSM-style dewatering screens, available in a range of sizes and builds. These are ideal for low-level dewatering applications such as carbon regeneration feed.

Como Engineers supplies heavy-duty, rubber-lined 304 stainless steel electrowinning cells for the recovery of precious metals.

Proven standard designs are available for the following cathode sizes:

• 600 x 600 mm
• 800 x 800 mm
• 1000 x 1000 mm

Standard designs are based on a 12-cathode, 13-anode arrangement, which can be extended or shortened as required (up to 40 cathodes). Custom sizes are also available on request.

Como Engineers supplies high-quality DC rectifiers for electrowinning operations, designed to pair with our range of electrowinning cells.

Two types are available:

• Traditional SCR thyristor-controlled diode rectifiers
• New-generation Switch Mode rectifiers – compact, high efficiency, high power factor and low ripple

Elution and Acid Wash Columns can be supplied as standalone equipment, either to integrate into your own system design or as replacements for an existing installation.

They are designed and manufactured to AS1210, ASME VIII Div I (U and non-U coded) and EU Directives (CE marked).

• Elution vessels are clad in 50 mm Rockwool with stainless steel cladding.
• Acid Wash columns are internally lined with 6 mm bromobutyl rubber for acid resistance.

Alternatively, Como Engineers can supply vessels in SAF 2205 stainless steel.

Traditionally, elution heating systems were based on indirect thermal oil designs. Recognising the inherent problems with this approach when heating eluate solutions above 120°C, Como Engineers developed its Direct Heating System technology, first introduced in the late 1980s, for all of its modular elution plants.

Como Engineers is the proud Australasian distributor of the class-leading Custom Furnaces range of rotary fuel-fired and electric kilns, available in capacities from 50 to 1,400 kg/hr.

Renowned for delivering high carbon regeneration activity in the gold processing industry, Custom Furnaces kilns are designed around sound processing principles, with close attention paid to effective thermal transfer and sufficient residence times.

Como Engineers supplies a range of high-quality plate and frame filters for your plant, including:

• Sludge collection filters for recovering dendritic sludge from ‘sludging’ electrowinning processes
• Optional filters for collecting fine carbon from a Transfer Water Tank

In Fine Carbon Recovery Systems, highly loaded carbon fines reporting from the CIL to the elution circuit can be collected and recovered for either high-temperature burning or multi-layered packed-bed stripping.

On remote sites, geography and access roads can limit equipment sizes, and shipping considerations can have a real impact on successful project delivery. In response, Como Engineers has developed a MODULAR Switch Room design that can be flat-packed into containers and reassembled quickly and easily on site.

Key features:

• Built to a 2-hour fire rating as standard, with the option of other certification
• Pre-assembled for quality checking
• Can be fitted with a range of equipment, including fire retarding systems and monitoring alarms, air-conditioning units, a range of lighting and motor control centres (MCCs)
• Walls can be specified as urethane insulated or a combination of compressed fibreboard/rockwool
• Standard powder-coated steel cladding, with stainless steel available
• Delivered in 40′ or 20′ open-top containers