Mining Application
Ball Mill Rejects Line Isolation
Maximize mill uptime and decrease water usage with isolation solutions that perform in the rigors of rejects processing.
More Productive Ball Mills With Reliable Rejects Handling
After grinding in the ball mill, fragments of ore remain that are too large to pass through the screen to the next phase. These fragments, along with foreign matter that can include broken balls from the mill, are ushered to the rejects line. Valves isolating these lines must provide zero leakage shutoff to prevent valuable water loss, while also being robust enough to resist severe impact damage.
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Recommended Products
The following products are capable of providing zero leakage shutoff of ball mill reject lines. They are also engineered to resist heavy impact damage and extend the uptime of your mill.
Emerson’s Clarkson KS1 is a TRUE bi-directional, zero – leakage ASME Class 150 knife gate valve, specifically designed to handle the challenges of severe service applications. Engineered to prolong valve longevity and maintenance intervals, the KS1 aims to offer a lower total cost of ownership.
- TRUE bi-directional, zero leakage performance for severe services
- Patented gate edge seal system eliminates leakage through top of valve
- Heavy cross-section, precision-molded elastomer seat increases sealing surface area to maintain zero-leakage performance for more cycles
Size Range
DN 50 - 750 (NPS 2 - 30)
Temperature Rating
205°C (400°F)
Pressure Rating
ASME Class 150
The Clarkson KGA+ heavy duty slurry valve offers improved seals, full flange body options, and simplified design for easier maintenance. It provides optimal performance in various conditions and100% isolation.
- Improved secondary seal: Capable of being lubricated without disassembly, simplifying valve maintenance.
- Double-seated design: Provides bi-directional flow and shut-off, ensuring 100% isolation and zero downstream leakage.
- Unobstructed flow: Eliminates turbulence and minimizes pressure drop across the valve while preventing solids from collecting and obstructing gate closure.
Size Range
NPS 3 - 60 (DN 80 - 1500)
Temperature Rating
Up to 400 °F (180 °C)
Pressure Rating
100 psi
Expert Insights
Andy Coxall
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Andy Coxall joins podcast host Jim Cahill to discuss the challenges in tailings management, the problems with valves not suited for this severe-service application, and why severe-service knife gate valve technology such as the Clarkson KS1 is the best choice for these challenging slurry applications.
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Download this whitepaper for ways to drive safer, more efficient & more sustainable mining operations with edge controllers.
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