DEVELOPMENT OF A PROCESS ROUTE FOR THE BENEFICIATION OF MALLAM AYUBA MANGANESE DEPOSIT TO FERROMANGANESE FEED GRADE

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dc.contributor.authorYARO, SHEHU ALIYU
dc.date.accessioned2015-03-05T10:15:07Z
dc.date.available2015-03-05T10:15:07Z
dc.date.issued1998
dc.descriptionA thesis submitted to the Postgraduate School, Ahmadu Bello University, Zaria in partial fulfilment of the Requirements for the award of the degree of Doctor of Philosophy in the Department of Metallurgical Engineering, Faculty of Engineering. 1998en_US
dc.description.abstractA process route for the beneficiation of Mallam Ayuba Manganese deposit located in Kaduna State, Nigeria was developed. By this route a low grade manganese concentrate which can be used in the production of spiegeleisen using the blast furnace process was produced. Based on the chemical, size/assay and mineralogical analyses carried out in this study, it was established that Mallam Ayuba Manganese deposit is a low grade ore containing only 23%Mn304 with high amoaunt of Si02 (38.68%). The deposit also contains moderate amount of sulphur (0.01%) and phosphorous (P2O5) (0.49%). From these analyses it was also established that the constituent minerals of the ore, are uniformly distributed, finely dessiminated and intermittently associated with each other. Liberation and grindability tests, revealed that no meaningful degree of liberation could be achieved because of the high degree of interlocking and intergrowth between the individual mineral grains. These tests also gave the average work index of the ore over particle size range -75 to -lOOOuM to be 13.12kwh/st. Concentration tests by gravity and froth flotation techniques with the aim of producing a concentrate for ferromanganese production did not yield the desired results. This is because the concentrates produced assay low manganese and high Si02 However, a low grade concentrate which can be used in the production of spiegeleisen(low grade ferromanganese) was produced by the process of lime-clinkering .This low grade concentrate can also be smelted with the Itakpe iron ore concentrate to produce a high manganese pig iron.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/6099
dc.language.isoenen_US
dc.subjectDEVELOPMENTen_US
dc.subjectPROCESS ROUTEen_US
dc.subjectMANGANESE DEPOSITen_US
dc.subjectFERROMANGANESEen_US
dc.subjectFEED GRADEen_US
dc.titleDEVELOPMENT OF A PROCESS ROUTE FOR THE BENEFICIATION OF MALLAM AYUBA MANGANESE DEPOSIT TO FERROMANGANESE FEED GRADEen_US
dc.typeThesisen_US
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