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MEI Online: Plant Operation News: Africa: January 27th 2014


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:: Kogi Finalises Agbaja Processing Plant Design


Australian based iron ore development company, Kogi Iron Limited and it's 100% owned Nigerian operating company, KCM Mining Limited are pleased to report the finalisation of the processing plant design for its Agbaja Iron Ore Project in Kogi State, Nigeria.

The processing plant design, which will be included in the Preliminary Feasibility Study that is nearing completion, has now been finalised and is based on a variety of test work programs carried out by Tenova Mining and Minerals (part of the global Tenova Iron & Steel and Mining Industries group and considers results from earlier metallurgical test work programs conducted by both Tenova and Trical Mining and Metallurgical Services.

Tenova's PFS test work focussed on subjecting the mineralised Agbaja material to proven simple physical separation techniques to produce an iron ore concentrate with optimum finished product specifications. Test work found that the iron contained in the mineralised material begins to liberate at a size below about 1 mm, so a primary grind size of 600 micron has been selected for the processing plant, with a final grind size at a relatively coarse 250 micron.

Grinding will be followed by Low Intensity Magnetic Separation (LIMS) which is a robust, high capacity and well established mineral processing technology. For the Agbaja material, laboratory testing of LIMS has demonstrated sound primary separation of iron bearing material for a reasonable final product grade and yield, after regrinding of the material. Yield is expected to be ~45%, for a final iron ore concentrate grade of ~56% Fe.




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