Dear experts, what materials would be suitable for the impeller and volute of a magnesium oxide slurry circulation pump to ensure durability?
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We are currently using pumps lined with PTFE, and the impellers are also made of PTFE. However, the impellers and volutes need to be replaced every three to four months. Fellow sailors, does anyone have any experience with this issue?
What operating conditions, and what is the medium? Temperature? Pump parameters? Could you describe the damage to the impeller and volute? Photos would be ideal
Fluoroceramic alloy can be used, offering greater corrosion and wear resistance
Magnesium oxide slurry, viscosity 1, inlet at atmospheric pressure, head 45m, flow rate 15m³/h
Are there impurity particles? Is the wear that severe? I’m not sure if UHMWPE will work
Pumps with PTFE-lined interiors have managed to hold up for three to four months – that’s already quite good; some manufacturers see the lining of such pumps peel off within just over a month
Yes, it contains particles and is corrosive
Corrosive? What else is there besides magnesium oxide? You can try UHMWPE
PTFE is corrosion-resistant, but its wear resistance is somewhat lower. If the temperature is not high, ultra-high molecular weight polyethylene can be used. There are many successful cases. . . . .