Mineral processing involves the enrichment of concentrate by
separating the grains of valuable mineral from the gauge, and since most ore
minerals are usually finely intimately associated with gangue minerals, the
various minerals must be liberated before they can be collected as separate
products. The Bond standard grindability test provides a Work Index that is
widely used to estimate the energy required for ore grinding. The research
investigates the work index of Anka Manganese ore at the Anka deposit in
Zamfara state, Nigeria. The reference ore (Quartz) was sourced from the studied
ore overburden in the mine. 500 g each of the manganese ore and quartz were
sampled and prepared by crushing and grinding to 100% passing a 1200 μm sieve.
100 g of prepared ores were charged into an array of sieves arranged in √2
series from 1000 μm to 63 μm. A set of sieves was mounted on the Automated
Pascal Denver sieve shaker (16153) and was in operation for 20 minutes. The
work index of reference ore was used to calculate the work index of the test
ore using Gaudin Schuman expression to obtain a work index of 14.16 Kwh/ton for
test ore and it lies within the work index of 10-15.14 Kwh/ton for manganese
ore stated in the literature and the energy expended to achieve communition at
mineral liberation size was calculated to be 3.3984 Kw/ton. Assessing the
grindability behaviour of Anka manganese
ore towards effective manganese mineral liberation was investigated. This is
very important to know the grinding characteristics of the ore towards the
determination of suitable power to be selected for its comminution process and
hence selecting suitable design parameters for the construction of grinding
machine suitable for communition process of studied test ore to its liberation size
avoid excess grinding or under grinding.
Author(s) Details
Y. E. Gbadamosi
Metallurgical and Materials Engineering Department, School of Engineering
and Engineering Technology, Federal University of Technology, P.M.B. 704,
Akure, Ondo State, Nigeria.
O. O. Alabi
Metallurgical and Materials Engineering Department, School of Engineering
and Engineering Technology, Federal University of Technology, P.M.B. 704,
Akure, Ondo State, Nigeria.
J. O. Borode
Metallurgical and Materials Engineering Department, School of Engineering
and Engineering Technology, Federal University of Technology, P.M.B. 704,
Akure, Ondo State, Nigeria.
F. O. Aramide
Metallurgical and Materials Engineering Department, School of Engineering
and Engineering Technology, Federal
University of Technology, P.M.B. 704, Akure, Ondo State, Nigeria.
Please see the book here :- https://doi.org/10.9734/bpi/ccert/v1/6919
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