In one of the largest open-cut copper mines in the world, water is found with a pH value of 2 to 3.
This must be pumped out.
HCM Helenic Copper Mines, Nikosia, Cyprus
D.I.S. Powerplant Ltd., Nikosia, Cyprus
The seepage occurring in the open-cut mine is extremely acidic, with a pH value between 2 and 3.
Numerous pumps from the competitors have already been tested, but have only achieved service life of two weeks to a maximum of three months. A mobile submerged pump will be sought that can withstand the extreme conditions on-site even over the long term and that works as maintenance-free as possible.
First, a Tsurumi model SFQ23.7 submersible motor pump was installed. This pump runs longterm in suction mode in the acidic medium in different locations. The pump has now been running for over 2 years and continues to be in excellent condition.
Due to positive experiences with the Tsurumi SFQ pump, several pumps in the Tsurumi PU series have now been purchased. These pumps can be used universally due to their low weight and single-phase motor, meeting the customer's requirements in every respect. The design of the PU series, with stainless steel and fiber-reinforced plastic, makes it possible to operate the pumps in acidic media. The oldest PU pump has now been running without problems for 1.5 years.