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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Media & Case Studies
Optimize Your Process With Genuine Knife Gate Valve Parts, Ensuring Safety & Productivity
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.
The Clarkson KGD wafer style slurry knife gate valve is a high-quality, bi-directional isolation valve designed for optimal performance, durability, and reliability. Ideal for heavy-duty applications requiring ultimate sealing, it offers the latest in elastomer technology with the Mark III sleeve design.
- 100% isolation, bubble-tight shut-off - ensures absolutely zero downstream leakage.
- Double-seated design - provides bi-directional flow and shut-off, allowing for smooth operation.
- Unobstructed flow - eliminates turbulence, minimizes pressure drop across the valve, and prevents any accumulation of solids.
Size Range
NPS 2 to 24 (DN 50 to 600)
Temperature Rating
Up to 300°F (150°C)
Pressure Rating
Up to 200 psi (14 bar) CWP
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
Expert Insights
Andy Coxall
Improving Tailings Management in Mining Operations
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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Jorge Espinoza
Episodio47: Tecnologías de medición y variables críticas para la minería
En este episodio los expertos en instrumentación industrial, Jorge Espinoza y Martín López nos comparten sobre las tecnologías de medición y monitoreo para variables críticas en la industria minera. Exponen sobre los más recientes avances en medición para incrementar la seguridad, la eficiencia y la rentabilidad de los procesos mineros. Te invitamos a ver o …
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Mathias Gehl
Mining Water Management Compliance
Emerson’s Mathias Gehl, from the recently acquired Flexim organization presented Water Management Compliance with FLEXIM Non-Intrusive Flow Measurement at the 2024 Emerson Exchange Conference in Düsseldorf, Germany.
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