Posts Tagged ‘mining’

New Line of Cast Stainless Steel Air Operated Diaphragm Pumps

Tuesday, September 4th, 2018 von admin

Crane ChemPharma & Energy developed a new generation of air operated double diaphragm (AODD) pumps. The line named Depa DH is manufactured in cast stainless steel (316L). This new range will include five sizes that are certified to Atex Zone 0 and five that are certified to Atex Zone 1.

The DH pumps are developed for operations within industrial and chemical applications. Acc. a company’s information “the Depa DH pump features an optimized pump design that can improve efficiency by up to 57% and increase flow rate by up to 10%.”

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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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