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Mine in Oberwiesenthal, Germany

The project:

Mining of fluorspar and heavy spar in a newly activated mine.


Company carrying out the works:

Erzgerbirgische Fluss- und Schwerspatwerke GmbH, Oberwiesenthal, Germany


Subcontractor:

Bau Punkt Kraatz GmbH & Co.KG, Annaberg-Buchholz


Tsurumi supervisor:

Mr. Thomas Elendt (Field Sales Team East)


The problem:

Water penetrates the top of the mining shaft, washing away many sediments with a diameter of 0.1 mm to 0.2 mm. Both pumps and hoses quickly wear out under these conditions; the previous pumps had to be replaced approx. every six months.


The solution:

A Tsurumi type KTV2-22 construction pump, with a special pump housing made of PU rubber in 80A shore hardness, used in 24-hour continuous operations. The oldest pump of this kind operated continuously for 2.5 years without intensive maintenance. After an overhaul, only the mechanical seal, impeller, and the shaft protection housing, had to be exchanged.

In the event of abrasive and corrosive utilization, stronger wear and tear will take place naturally in certain components. With regards to the above application wear and tear can take place mainly in impeller, agitator, suction plate, shaft sleeve, oil ring, mechanical seal, pump casing, strainer, motor casing and discharge coupling. Depending on the working conditions the lifetime of those parts might vary significantly and can be shorter than the legal warranty period.
In this regard, please pay attention to our general terms and conditions that we also send to you by mail on request.