Liberation Size and Beneficiation of Enyigba Lead Ore, Ebonyi State .Mar 30, 2015 . Abstract. This research work centered on the determination of Liberation Size and Enrichment of Enyigba. Lead Ore in Ebonyi state, Nigeria.beneficiation of lead ore,Processing Mineralogy Study on Lead and Zinc Oxide Ore in . - MDPIApr 22, 2016 . Keywords: oxidized lead-zinc ore; processing mineralogy; minerals . useful guidance for interpreting mineral beneficiation mechanisms,.