COMMINUTION AND CRUSHING
Four of Derrick ’ s eight-deck SuperStack vibratory screening machines were recently installed at Kropz ’ s phosphate operation in South Africa
equipment specialist to deliver these multi-slope banana screen as part of plans to increase throughput at the mine to 100 Mt / y , from 85 Mt / y .
These 85 t screens , designed and built at Schenck Process ’ production facility in Western Australia , will handle 8,000 t / h each . They measure 4.3-m wide and 9.7-m long .
It is a screening installation in South Africa that has recently got the sector talking – once again – about Derrick Corporation ’ s eight-deck
SuperStack ® vibratory screening machine .
This machine offers twoand-a-half-to-three-times the capacity of its precursor , the 5-deck Stack Sizer ® , along with a 30-35 % increase in effective screening width per deck for significantly higher production capacity with only a modest increase in footprint , according to Derrick .
While the five-deck Stack Sizer is equivalent to a 5-m wide by 1.5-m long screen , the 1.42-m wide SuperStack is equivalent to a 11 m x 1.5 m screen , Derrick says , adding that all screen frames are coated with abrasion-resistant urethane for extended service .
The adoption rate of the SuperStack has grown rapidly since its introduction . There will be at least six companies installing and commissioning their SuperStacks within 2022 . Kropz plc , an emerging Africa-focused phosphate developer , has been one of them .
Kropz introduced first ore to its 1 Mt / y plant at the Elandsfontein mine , in the Western Cape of South Africa , last year .
Chief Operating Officer of Kropz Phosphate , Michelle Lawrence , said of the SuperStack installation : “ The four SuperStacks offer an elegant and cost-optimised solution to increasing
A VRM9000F-1600 ( 1,600 kW VRM ) installed at First Majestic Silver ' s Santa Elena mine in Mexico
the throughput of the milling circuit and the top size presentation to the flotation circuit .”
IM
Tailings 2022 is organized to offer a forum where executives , professionals and academics from the Global Mining Industry can learn and analyze the latest developments and best practices in the transportation , disposal , control and monitoring of conventional , thickened , paste and filtered tailing storage facilities .
executive committee
chair carlos castro Fluid Transportation and Tank Manager , Minera Los Pelambres , Antofagasta Minerals , Chile |
2021 chair tamara johndrow Director Tailings & Water , Freeport-McMoRan , USA |
co-organizer césar pastén Academic , AMTC , Universidad de Chile |
co-organizer caius priscu Adjunct Professor , Norman B Keevil Institute of Mining Engineering , The University of British Columbia , Canada |
co-organizer jorge macedo Assistant Professor , Georgia Tech , taileng , usa program chair hugo quelopana Project Manager , Delfing , Chile conference manager mimy mackenzie Gecamin , Chile
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