Problematic of the Imini pyrolusites in the production of ferromanganese for metallurgical applications
DOI:
https://doi.org/10.3989/revmetalm.1998.v34.iExtra.778Keywords:
Pirolusite, Lead, Metallurgy, Scanning electronic microscopy, Dispersive energy microanalysisAbstract
The possibility of eliminating lead impurities from the pyrolusite of Ímini (Morocco) has been studied. The material undergoes a minerallurgical process which allows the separation of six fractions based on their differences in density and electromagnetic behaviour. Among the fifteen mineralogical species found, none of them contains lead in its theorical formulation. In order to detect the presence of this element the microanalysis by dispersive energies was used and a "mapping" of lead was made in each of the fractions. This element is concentrated in the psylomelane crystals. The chemical composition of the psylomelane was compared with that of the hollandite, taken from the references. The presence of lead inside the psylomelane crystalline structure avoids its separation by a classical minerallurgic of process and therefore the use of this material is not feasible for the production of ferromanganese.
Downloads
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 1998 Consejo Superior de Investigaciones Científicas (CSIC)
This work is licensed under a Creative Commons Attribution 4.0 International License.
© CSIC. Manuscripts published in both the printed and online versions of this Journal are the property of Consejo Superior de Investigaciones Científicas, and quoting this source is a requirement for any partial or full reproduction.
All contents of this electronic edition, except where otherwise noted, are distributed under a “Creative Commons Attribution 4.0 International” (CC BY 4.0) License. You may read the basic information and the legal text of the license. The indication of the CC BY 4.0 License must be expressly stated in this way when necessary.
Self-archiving in repositories, personal webpages or similar, of any version other than the published by the Editor, is not allowed.
