THE FORMATION OF BRAZILIAN MINERALS DATABASE FOR INTEGRATED SEM-EDS SYSTEM APPLIED TO THE GOLD ORE CHARACTERIZATION
The mineralogical characterization of the various Brazilian occurrence of minerals is presented as one of the key steps in the design of the minerals processing route and improving the overall efficiency of the process. Such information is essential in assessing the technical and economic viability...
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doaj-b2ed7064165f4630aea3e3c046e6842d2020-11-25T02:05:21ZengInstituto Federal de Educação, Ciência e Tecnologia do Rio Grande do NorteHolos1807-16002018-09-013022210.15628/holos.2018.69381992THE FORMATION OF BRAZILIAN MINERALS DATABASE FOR INTEGRATED SEM-EDS SYSTEM APPLIED TO THE GOLD ORE CHARACTERIZATIONNey Pinheiro Sampaio0Fernando Gabriel Araújo1Fernando Leopoldo von Kruger2Fundação de Desenvolvimento da Pesquisa - FUNDEP- Centro de Microscopia da UFMG - Universidade Federal de Minas GeraisUniversidade Federal de Ouro Preto- UFOPFundação GorceixThe mineralogical characterization of the various Brazilian occurrence of minerals is presented as one of the key steps in the design of the minerals processing route and improving the overall efficiency of the process. Such information is essential in assessing the technical and economic viability of a mineral Project. Among the various mineralogical characterization techniques, automated analyzers are gaining great prominence because they provide qualitative and quantitative data in an automated manner, with great speed and accuracy. The system, available in NanoLab, laboratory of the Mining-Metallurgic Centre REDEMAT, specifically called TIMA-MIRA, is composed of a scan control program and analysis of mineral data (TIMA - Tescan Integrated Mineral Analyzer) and a scanning electron microscope with cannon field emission of electrons associated with two energy dispersive detector characteristic X-rays (MIRA - trade name). The system uses a mineral database in its operations, consisting in the association of images by back scattered electrons of the mineral grains, with their characteristic X-ray spectra and their comparison with the characteristic spectra of a database. The equipment has an interface that allows you to add minerals and other materials to their underlying database, which is critical to the accuracy of the results because the original equipment database, created, only with data of mineral samples from other countries, does not identify minerals of national origin, with its characteristic major and minor elements. These limitations of the database integrated mineral analyzer TIMA-MIRA motivated the construction of a new database through a selection methodology, preparation and analysis by diffraction rays and the TIMA-MIRA system, different context samples Brazilian geological. With the XR diffraction analysis, each mineral was determined to be analyzed in the integrated mineral analysis system. With this, we obtained the maximum and minimum values of the intensities of chemical elements peaks that make up the analyzed mineral, obtaining thus new identification rules for each selected species and adapted some existing rules, to meet the needs presentedhttp://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/6938mineralogical characterizationintegrated mineral analyzersemeds |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ney Pinheiro Sampaio Fernando Gabriel Araújo Fernando Leopoldo von Kruger |
spellingShingle |
Ney Pinheiro Sampaio Fernando Gabriel Araújo Fernando Leopoldo von Kruger THE FORMATION OF BRAZILIAN MINERALS DATABASE FOR INTEGRATED SEM-EDS SYSTEM APPLIED TO THE GOLD ORE CHARACTERIZATION Holos mineralogical characterization integrated mineral analyzer sem eds |
author_facet |
Ney Pinheiro Sampaio Fernando Gabriel Araújo Fernando Leopoldo von Kruger |
author_sort |
Ney Pinheiro Sampaio |
title |
THE FORMATION OF BRAZILIAN MINERALS DATABASE FOR INTEGRATED SEM-EDS SYSTEM APPLIED TO THE GOLD ORE CHARACTERIZATION |
title_short |
THE FORMATION OF BRAZILIAN MINERALS DATABASE FOR INTEGRATED SEM-EDS SYSTEM APPLIED TO THE GOLD ORE CHARACTERIZATION |
title_full |
THE FORMATION OF BRAZILIAN MINERALS DATABASE FOR INTEGRATED SEM-EDS SYSTEM APPLIED TO THE GOLD ORE CHARACTERIZATION |
title_fullStr |
THE FORMATION OF BRAZILIAN MINERALS DATABASE FOR INTEGRATED SEM-EDS SYSTEM APPLIED TO THE GOLD ORE CHARACTERIZATION |
title_full_unstemmed |
THE FORMATION OF BRAZILIAN MINERALS DATABASE FOR INTEGRATED SEM-EDS SYSTEM APPLIED TO THE GOLD ORE CHARACTERIZATION |
title_sort |
formation of brazilian minerals database for integrated sem-eds system applied to the gold ore characterization |
publisher |
Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte |
series |
Holos |
issn |
1807-1600 |
publishDate |
2018-09-01 |
description |
The mineralogical characterization of the various Brazilian occurrence of minerals is presented as one of the key steps in the design of the minerals processing route and improving the overall efficiency of the process. Such information is essential in assessing the technical and economic viability of a mineral Project. Among the various mineralogical characterization techniques, automated analyzers are gaining great prominence because they provide qualitative and quantitative data in an automated manner, with great speed and accuracy. The system, available in NanoLab, laboratory of the Mining-Metallurgic Centre REDEMAT, specifically called TIMA-MIRA, is composed of a scan control program and analysis of mineral data (TIMA - Tescan Integrated Mineral Analyzer) and a scanning electron microscope with cannon field emission of electrons associated with two energy dispersive detector characteristic X-rays (MIRA - trade name). The system uses a mineral database in its operations, consisting in the association of images by back scattered electrons of the mineral grains, with their characteristic X-ray spectra and their comparison with the characteristic spectra of a database. The equipment has an interface that allows you to add minerals and other materials to their underlying database, which is critical to the accuracy of the results because the original equipment database, created, only with data of mineral samples from other countries, does not identify minerals of national origin, with its characteristic major and minor elements. These limitations of the database integrated mineral analyzer TIMA-MIRA motivated the construction of a new database through a selection methodology, preparation and analysis by diffraction rays and the TIMA-MIRA system, different context samples Brazilian geological. With the XR diffraction analysis, each mineral was determined to be analyzed in the integrated mineral analysis system. With this, we obtained the maximum and minimum values of the intensities of chemical elements peaks that make up the analyzed mineral, obtaining thus new identification rules for each selected species and adapted some existing rules, to meet the needs presented |
topic |
mineralogical characterization integrated mineral analyzer sem eds |
url |
http://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/6938 |
work_keys_str_mv |
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