Clog-free screw centrifugal pump transports salt and lime suspension

An industrial wastewater treatment plant pumps a highly corrosive and abrasive mixture of salt and lime

Process: Lime is added to the brine-based wastewater, and all wastewater from the neutralization plant passes through the transfer pump.

Problem: The corrosive mixture caused calcium sulfate to be deposited on the impeller as thick as 1 mm, requiring cleaning and preventive maintenance every 2,000 hours.

Solution: Non-clogging spiral centrifugal pumps with Halar or ECTFE coated wetted parts can now be cleaned once a year, preventive replacement of mechanical seals, non-clogging spiral centrifugal pumps can run 5 hours a day for 3 years without any additional maintenance , reducing the five-year life cycle cost by 35%

Non-clogging spiral centrifugal pump transports quartz sand

A Bavarian industrial mineral mining and processing company based near Jaffia specializes in the processing of quartz sand, feldspar and pegmatite, refractory clay, fluorite, quartz and asbestos.

Process: The raw materials containing 13% quartz sand are cleaned, screened and pumped to the settling area.

Problem: Previously, the company used a vortex centrifugal pump with a back-door, open impeller, but the abrasive sand and water mixture caused severe wear on the rotor, requiring it to be replaced weekly.

Solution

Clog-free spiral centrifugal pump with soft polyurethane coating Close-coupled pump.

After 4 months of intensive use, routine inspection of contact parts showed only minimal wear.