Think Big! The Largest Schenck Process Screen of all Times goes Operational in Canada
14 June 2006
Think big! This saying currently takes on a new meaning. The linear-motion Vibro Screen Feeder type SLG4099XFC by Schenck Process is gigantic and goes beyond the scope of anything you ever saw so far. It is the largest Schenck Process screen ever built. Made, assembled, and tested by Schenck Australia. Supplied to Canada.
A screen of that size, what is it made for?
In brief: for the most severe requirements, for the most extreme envi-
ronmental conditions, for the most difficult to handle, non-homogenous bulk solids with the most diverse flow properties.
The screen was designed to handle up to 10,000 t/h bulk solids containing thick frozen lumps of up to 1 m in diameter. The oil/sand material contains max. 15% bitumen with strongly varying flow behaviour, depending on the contents of bitumen, geologic properties, and seasonal influences. The feed comprises easily flowing or frozen lumpy material up to a cohesive mat. Material which, from experience, is difficult to break up and to loosen. The raw material is mixed with up to 2000 m3/h hot water.
Design & features
To meet the extreme requirements, Schenck Australia built a screen having a screen width of 4.0 m, a screen length of 9.6 m, and a total length of 11 m. It weighs almost 60 tons and is driven by six Schenck exciters type DF 601 V.
The screen is set up on an isolation frame. The motors with gearbox drive the two exciter lines. The screen mat has a wear-resistant surface consisting of a combination of tungsten and chromium carbides.
Built for the most arduous operating and environmental conditions
The screen is set up outdoors and will be exposed to an ambience with temperatures of - 45°C to + 35°C. The feed material was another challenge. It is a caustic slurry, consisting of 70°C water and highly abrasive oil sand.
Accordingly, the screen is of sturdy and adaptable design, made of special materials which can withstand the fluctuations between extremely cold environment and the process requirements of hot caustic liquids.
The screen was shipped to Canada in early February 2005 and will be put into operation in the fall.
