Question regarding the pump to be used for polyaluminum chloride
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The yellow liquid of polyaluminum chloride contains particulates; its specific gravity is approximately 1.2, the temperature is 80 degrees, the acidity is 0.5 PH, the flow rate is 50 cubic meters, and the pressure is 85 meters. We are currently using pumps with PTFE linings; they wear out quite quickly, and we have to repair them every week. Could anyone recommend a suitable pump? Thank you!
For the pumping conditions of polyaluminum chloride as you described, pumps made of metals or special alloys with greater corrosion resistance can be considered, such as Hastelloy pumps or titanium alloy pumps. These materials possess improved resistance to high temperatures and corrosion, enabling them to withstand environments with extremely low pH values as well as high pressures and temperatures. Taking into account the pump’s sealing system as well, sealing materials suitable for acidic media should be used, such as special rubbers or fluororubbers. It is recommended to consult a professional pump manufacturer for detailed configuration and material recommendations. .
Is the outlet head that high? Is the pump currently in use equipped with an external single-face WB2 seal? Apart from the machine seal not being durable, which components wear out relatively quickly?
It has a high head pressure and contains particles; PTFE is not durable. The main advantage of PTFE is its resistance to acids and alkalis, but its wear resistance is poor.
Ceramic slurry pumps can be considered for use
It’s an end-face mechanical seal, and the wear mainly occurs in the PTFE part!
Which type of ceramic is suitable for use?
You can take a few photos of the worn areas