Optimizing Tailings Reclamation

High performance control valves are an integral part of any successful tailings reclamation operation. Effectively throttling the flow of abrasive slurry can greatly improve the speed and efficiency of the reclamation phase.

SlurryFlo has successfully provided custom engineered solutions for various reclamation processes, with hundreds of installations at major mining facilities.
The final stage of the tailings management process is storage and reclamation. Various technologies and equipment are used in this phase, such as Composite Tailings Plants, Fine Tailings Thickener Plants, Centrifuge Plants, and Mature Fine Tailings Drying Plants. As shown in the two examples below, these plants contain numerous severe service control valve applications:
Canadian Oil Sands Centrifuge Plant - Tailings Reclamation DiagramCanadian Oil Sands Mature Fine Tailings Drying Plant - Tailings Reclamation Diagram
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Polymer Inlet
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Gypsum
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Fine Fluid Tailings
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Flotation Tailings
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Cyclone Overflow
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Cyclone Underflow
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Flocculant
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Mature Fine Tailings
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Composite Sand Tailings
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Carbon Dioxide CO2
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Coarse Sand Tailings
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Reclaimed/Process Water
As the tailings reclamation process becomes more efficient, control valves must provide a longer service life and higher return on investment. In many instances, common severe service control valves do not provide acceptable performance.

SlurryFlo control valves are custom engineered for your exact application requirements, providing an unparalleled service life.
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Severe service slurry control valves - SlurryFlo
Application Reference

Centrifuge Polymer Inlet Flow Control

At a Canadian oil sands mining facility, a liquid polymer is injected into the Fluid Fine Tailings (at the centrifuge inlets), separating the fines and clay from the water and expediting the reclamation process. To modulate the polymer media, the client had installed 8” pinch valves.
Canada Oil Sands Centrifuge Plant Diagram
Due to the incompatibility between the pinch valve sleeve material and the abrasive process media, the sleeves were frequently rupturing. As such, the pinch valves were replaced every month, resulting in significant labor expenditures and lost production.

Disappointed with their pinch valve service life and performance, the client approached SlurryFlo to recommend a better control valve for this application.
SlurryFlo control valve installed in polymer inlet for tailings reclamation

A Quantum Leap in Service Life

An 8” SlurryFlo control valve was installed on a trial basis. After two months of service, the client challenged SlurryFlo to further refine the valve’s performance.

Collaborating with the client, SlurryFlo engineers developed a revised seat plate geometry, which further optimized the process control (note: due to SlurryFlo’s unique modular design, the new seat plate was easily installed on site).

Upon one year of service, the client was impressed with SlurryFlo’s control valve service life. They have now replaced all existing pinch valves in this application.
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The SlurryFlo Difference

SlurryFlo provides the following advantages in tailings reclamation applications:
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3-10x longer service life.
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Reduced maintenance costs.
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Field replaceable wear components.
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Custom trim geometry.
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Ongoing engineering support.
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Dozens of standard & exotic materials.
8" SlurryFlo control valves for mining and mineral processing
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