2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 1: D'Abreu Intl. Symp. / Iron and Steel Making

Editors:Kongoli F, Noldin JH, Takano C, Lins F, Gomez Marroquin MC, Contrucci M
Publisher:Flogen Star OUTREACH
Publication Year:2016
Pages:320 pages
ISBN:978-1-987820-37-9
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)
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    Modeling the simultaneous acid leaching process of phosphorus and aluminum remotion in iron ore

    Jose Adilson de Castro1; Camila Hosken2; Luiz Carlos Rollim Lopes2; Leonardo Martins da Silva3; Elizabeth Oliveira4; Alexandre Santos Francisco2;
    1UFF - FEDERAL FLUMINENSE UNIVERSITY, Volta Redonda, Brazil; 2UFF, Volta Redonda, Brazil; 3UNIVERSIDADE FEDERAL FLUMINENSE, Volta Redonda, Brazil; 4CENTER FOR TECHNOLOGICAL EDUCATION CELSO SUCKOW DA FONSECA, Valenša, Brazil;
    Type of Paper: Regular
    Id Paper: 186
    Topic: 2

    Abstract:

    The high levels of phosphorus demand operations of dephosphorization for steel manufacturing steps resulting in high costs. One way to minimize these costs is the removal of phosphorus in the iron ore particles using the acid leaching process; however, depending on how the phosphorus is complexed in the mineral phase requires the application of additional energy. However, when the phosphorus removal process using acid leaching also occur in the ore particles loss of iron and leaching aluminum. The loss of iron is undesirable for the beneficiation process while aluminum is beneficial for the efficiency of the concentration and has a positive effect on the subsequent step of reduction. Currently, there is no viable technology for simultaneous removal of phosphorus and aluminum in iron ore. Understanding the mode of occurrence of these elements in minerals will surely bring new information that eventually may subsidize the development of methods for their removal. In this work, we propose, a model to predict the effects of addition of energy in the iron ore particles using microwave energy due to its efficiency in heat generation. Therefore, in this study, we evaluated the acid leaching process in the iron ore particles targeting of reducing the phosphorus and aluminum contents and was also evaluated the removal of iron in the particles. Through factorial statistical design technique with central and axial points, we determine the optimum conditions employed in the acid leaching process. The following values for experimental optimum conditions were: 19,25g mass of ore, leaching time 20 min, temperature 650C leaching, agitation speed of 620rpm, average particle size of 595 microns, having a 3-minute contact time with the power of microwave. Under these conditions, the reduction of phosphorus content in iron ore sample reached a value of 52.47%

    Keywords:

    Energy; Extraction; Iron; Modeling; Sustainability; Waste;

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    Cite this article as:

    de Castro J, Hosken C, Rollim Lopes L, Martins da Silva L, Oliveira E, Santos Francisco A. Modeling the simultaneous acid leaching process of phosphorus and aluminum remotion in iron ore. In: Kongoli F, Noldin JH, Takano C, Lins F, Gomez Marroquin MC, Contrucci M, editors. Sustainable Industrial Processing Summit SIPS 2016 Volume 1: D'Abreu Intl. Symp. / Iron and Steel Making. Volume 1. Montreal(Canada): FLOGEN Star Outreach. 2016. p. 278-279.