Iron ore dressing plant
Controlling abrasive fluids is known to be a challenge for any industrial applications. Each valve technology has its strengths and weaknesses, and they need to be evaluated based on the specific media being handled. Key considerations to be considered are purchase cost, installation cost, and, most critically for abrasive media, maintenance costs.
Iron ore dressing plant
Application: Throttling of deposit from thickener
- Flow 120-240 m3/h with 10-30% solids
- Grain size about 1mm
- Inlet pressure – 0,8 bar
- Pressure drop 0,8 bar
Measures and results
In this case our Ramén Ball Sector Valve KSG proved that soft natural rubber in certain cases is much more resistant than steel.
A soft rubber lined KSG valve, size 150 mm was installed in one of the largest Swedish Iron mines at the exactly same application as a valve without the rubber lining. After six months (four of continuous service) the KSG valve was taken out for inspection and absolutely no wear could be observed.
The customer had tested several other valve technologies, such as rubber pinch valves and lined butterfly valves in the same service and none had lasted more than two months. Changing to Ramén’s ball sector valves gave the customer several benefits including much lower maintenance cost and downtime.
Challenge
Water leakage from the valve body caused by severe wear on the inlet cover ring, ball sector, and seat ring.
Solution
A soft rubber lined KSG ball sector valve size 150 mm.
Result
No signs of wear or damage and lower maintenance costs compared to traditional valve solutions.