From ore to ferroalloy at Niobec Mine: The role of the geologist in ISO 9002 implementation

Abstract Niobec mine, a producer of pyrochlore concentrates since 1976, became a producer of ferroniobium in 1994 and achieved accreditation to the ISO 9002 standard in 1995. The goal of ISO 9002 is to ensure that the products supplied to clients regularly meet their specifications, through explicit work standards and procedures throughout the production process, from deposit appraisal to ferroniobium production. A key element of ISO 9002 implementation at Niobec consists of the quality control procedures applied to the raw materials: the ore fed to the mill and the pyrochlore concentrate fed to
the reduction plant. These controls extend from exploration, deposit appraisal, mine planning and reserves estimation, mining, mineral processing and, finally, ferroniobium production. The implementation of ISO 9002 has allowed more efficient control of the quality of the final product sold to clients. It requires interactive team work, the role of the geologist being to relate all information pertaining to raw material and product quality to the geological framework of the deposits.
Keywords: Geology, Exploration, ISO 9002, Niobec Mine.
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Summary: Hot forming and superplasticity in powder metallurgy aluminum alloys and composites is reviewed. The effects of alloy composition, particulate composition, size, and size distribution is summarized. The role of climb distance for recovery is described in connection with the size of strengthening phases. In materials with fine strengthening phases on the order of one micron or less, high strain rate superplastic deformation processes are likely. However, the quality of superplastic deformation...
Publication: CIM Bulletin
Author(s): T.R. Bieler
Keywords: Metallurgy, Aluminum alloys, Powder metallurgy, Metal matrix composites, Hot working, Superplasticity, Post-forming properties.
Issue: 1007
Volume: 90
Year: 1997
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Summary: The selection of the production rate is one of the most crucial decisions to be made in the development of a mineral property. However, it is not uncommon for the production rate to be decided arbitrarily, before any technical evaluations begin, and it is often not reconsidered when better data becomes available. A number of methods are used in the mineral industry to select the production rate for a project. There is general agreement that the size of the ore reserve has a strong influence...
Publication: CIM Bulletin
Author(s): Lawrence Devon Smith
Keywords: Mineral economics, Production rates, Optimum production rates.
Issue: 1007
Volume: 90
Year: 1997
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Summary: The effect of extended ball milling has been studied for two industrial processes: (1) the processing of metal sulphide concentrates; and (2) the carbothermic reduction of ilmenite to synthetic rutile. The plant concentrates were a gold ore with 128 g/t Au of which 8% was non-refractory and a zinc concentrate with copper impurities.
The gold concentrate showed complete dissolution of the gold bearing minerals after milling giving almost complete gold liberation. The zinc concentrate showed...
Publication: CIM Bulletin
Author(s): Nicholas J. Welham
Keywords: Mineral processsing, Extended ball milling, Milling.
Issue: 1007
Volume: 90
Year: 1997
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