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MEI Online: Gravity Concentration: Latest News: March 11th 2008


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:: First Jig for Iron Ore Sector

Bateman India, part of the Bateman Engineering Group, has been contracted by an iron ore producer and exporter, located in the Hospet / Bellary iron ore sector of India, to supply a 2.5 m wide, three-compartment long Bateman-Apic Jig for an iron ore project near Hospet, in the Karnataka state in India. This is the first jig to be supplied to the iron ore sector by Bateman Engineering.

The contract from the client covers the design, procurement, fabrication, supply and commissioning of the jig, which will process float ore (naturally liberated ore) to separate it from the siliceous rock. The jig will handle 150 t/h of feed, with a particle size of (-) 8 mm (+) 3 mm. The jig will also be able to process the fraction (-) 25 mm (+) 8 mm by only adjusting the process control settings. The contract commenced in December 2007 and is due for completion in May 2008.

Bateman-Apic jigs offer a cost-effective solution to the processing and upgrading of iron ores. However, as well as being suitable for the upgrading of both metallic and non-metallic ores, they are also applied for the recovery of ferroalloys from slag, coal washing and the washing of wastes. They are supplied as permanent-fixture processing facilities and modular process plants, either under turnkey (client owned and operated) or toll-treatment contracts. Pilot-scale units are available for process-development testing.

The jigs feature a specially developed fines gate and the JIGSCAN system, both of which have overcome the problem experienced worldwide in the handling of fine ferrous ores. The gate minimises the back mixing of fines before discharge, while JIGSCAN is a fully integrated and computerised automatic system providing improved control over product quality and higher yields of ‘on-specification’ product. The product extraction system utilises a vibrating screen system for increased control over product discharge to increase product recovery.

The upgrading of ferrous ores by jigging has been done for many years internationally. In cases where the cut density exceeds 4.0 g/ml or where test work has shown that jigs offer sufficient performance, jigs are now the preferred route, as opposed to other density-separation techniques, due to their simplicity and low running costs.




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