Archive for July, 2014

Andritz: Dewatering flooded mine tunnels in South Africa

Thursday, July 17th, 2014 von admin

South Africa is currently dealing with the problem of acid water because underneath the old gold mining city of Johannesburg is a lake which contains heavily contaminated water, which spreads horizontally and vertically into the abandoned pits of the former gold mines.  Meanwhile, the water line has reached a critically high level, as determined by the specialists from Andritz Ritz, which was given the first order to drain the mine water in 2010. The execution of the project was delayed by four years however, and it was only in spring 2014 that two powerful submersible motor pumps were installed in the middle of Johannesburg city centre, in the so-called “Central Basin”, with each pump capable of bringing 1,500 m³/h of water to the surface.

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Oerlikon Leybold Vacuum: Atex Certificate for Steel Degassing Vacuum Systems

Tuesday, July 1st, 2014 von admin

OLV PIC 2 (2)In all processes for steel degassing under vacuum gases and vapors are formed that might be dangerous. Essentially CO and H2 as well as the vapors of volatile metals are released from the steel surface. Explosion protection in vacuum plants especially those that generate a large quantity of CO by the use of oxygen for decarburization so far has been assured by overpressure flaps at the metallurgical reaction vessels, alarm devices for water leakage, sensors for pressure and temperature as well as emergency venting with nitrogen. With the introduction of mechanical vacuum pumps efficient installations for gas cooling and dust separation became necessary.

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Top 10 posts on Δ p Global Online in June 2014

Tuesday, July 1st, 2014 von admin

The following posts on Δ p Global Online have been most clicked in last month:

  1. DST presents a new magnetically coupled centrifugal pump
  2. ITT Bornemann: Hermetically sealed twin- screw pump with magnetic coupling
  3. WEG: New permanent-magnet motor surpasses IE4 standard
  4. Wilden shows new air distribution system for AODDP
  5. 6th China International Chemical Technology & Equipment Fair
  6. KSB: Pumps for the world’s most modern coal-fired power plant
  7. KSB: Software for building services consultants
  8. Prüftechnik: Precision laser shaft alignment
  9. DAB: Efficient re-use of rainwater
  10. KSB: Hot water recirculation pump without external cooling

In the same periode on Δ p Online – the German pumps + systems plattform – these posts are most clicked:

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