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Advanced, Proven Design and Demonstrated Superiority

Superior Metallurgy Higher Availability

WEMCO SmartCell ... ®

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The two factors having the strongest impact on a flotation circuit’s financial performance are Metallurgical Recovery and Flotation Cell Availability. The SmartCell Flotation Machines sur the performance of competing flotation machines in both of these important areas. ™

Superior Metallurgy WEMCO SmartCell metallurgical superiority has been proven in side-byside comparative tests conducted by major mining companies. Results show that SmartCell flotation machines operate on superior grade recovery curves with respect to forced air machines and are superior with respect to coarse particle recovery. ®

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The superior performance is related to flotation favorable hydro-dynamics which produce higher active cell volumes, provide longer residence times and complement froth removal.

Greater Availability Competing equipment cannot match the availability of the WEMCO SmartCell flotation machines. Every SmartCell mechanism can be removed for maintenance without process interruption. Blowers are not required, eliminating maintenance and availability loss due to failure. SmartCell rotors are located in an elevated position enabling, ease of start-up and reduced rotor and disperser wear relative to competitive machines. ®

Computational fluid dynamic model of SmartCell™ Flotation Machine operation.

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Advanced, Proven Design and Demonstrated Superiority A WEMCO® SmartCell™ Flotation Circuit is Custom Engineered to Meet End- Requirements. Listed Below is a Sampling of Available Options Feed Boxes SmartCell flotation machines can be provided with semi-circular or circular feed boxes depending upon process requirements. The semicircular feed box is an integral part of the lead flotation cell and is typically the lowest cost alternative, providing the smallest flotation footprint. The circular feed box option is slightly more expensive but provides advantages with respect to shipping constraints and retrofit installations. ™

Semi-Circular Feed Box

Circular Feed Box

Connection and Discharge Boxes EIMCO provides the connection and discharge box to meet your needs. The conventional box is preferred for applications where recycle streams are a consideration. The hinged dart valve, internal to Circular Boxes the SmartCell flotation tank, provides the lowest cost option, and reduces the flotation footprint by allowing the SmartCell tanks to be spaced flange to flange. The circular box provides a significant Circular availability advantage with Boxes respect to unscheduled maintenance and also allows flange-to-flange tank spacing.

Internally Hinged Dart Valves

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Flat Versus Semi-ed Tank Bottoms Semied Tank Bottom on End- Supplied s

An important engineering consideration is the of the flotation cell. EIMCO provides both flat and semi-ed options. The flat option is the lowest cost when considering only the price of the cell; however, quite often the semi-ed option provides the lowest overall project cost.

Air Control A unique feature of the SmartCell flotation machine is the ability to self-adjust the air input rate to changing slurry conditions. For example, the SmartCell self-aspirating mechanism automatically reduces the air input rate as the slurry percent solids increase. There are applications; however, when metallurgical performance can be improved if this self-adjusting feature is overridden with automatic air control. ™

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Air Control on Ambient Air Intake

Instrumentation and Control Every SmartCell flotation machine is provided with ultrasonic pulp level control as a standard feature. Advanced instrumentation and adaptive expert systems are available as options. ™

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WEMCO SmartCell Flotation Machines ®

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Ambient Air

Feed Motor

Agitator Mechanism Semi-Circular Feed Box Froth Crowder Radial Launder Disperser Hood

Single Concentrate Launder Hybrid Draft Tube

Disperser

Mixing Baffle

Rotor

Tails Tank Bevels Hybrid Draft Tube False Bottom

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The SmartCell™ series combines the proven WEMCO® mechanism with cylindrical cells to optimize energy input, aeration, and mixing. This configuration reduces pulp turbulence and improves froth stability. Additional standard features include a hybrid draft tube, beveled cell bottom, froth crowder, mixing baffles, and radial launders. Since the introduction of the SmartCell™ Flotation Machine in early 1996, most major base metal flotation developments have selected WEMCO® SmartCell™ machines.

Cylindrical Tank Design Improves mixing efficiency and air dispersion Better surface stability and less pulp turbulence Lower capital costs Reduced power consumption

Hybrid Draft Tube & Beveled Tank Improves hydrodynamic mixing Increases solids suspension Improves coarse particle recovery

Radial Launder & Mixing Baffles Increases froth mobility Decreases froth residence time Increases recovery Enhances froth stability

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WEMCO SmartCell Flotation Machines ®

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SmartCell™ Flotation Machine Product Line Cell Volume Application

[m3]

ft3

Pilot Scale

0.05 0.15

1.8 5.3

5 10 20 30 40 60 70 100 130 160 200 250

180 350 710 1060 1410 2120 2470 3530 4590 5650 7060 8830

Production SmartCell ™ Flotation Machines

14 Standard Cell Sizes EIMCO provides a wide range of SmartCell sizes from 0.05 m3 to 250 m3. The FCTR (Floatability Characterization Test Rig), has proven to be very reliable in many AMIRA pilot campaigns and is offered with 0.15 m3 roughers and 0.075 m3 cleaners. ™

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EIMCO Process Equipment Company is the World Leader in Large Cell Technology with the Greatest Installed Capacity of any Flotation Manufacturer

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