<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0121-1129</journal-id>
<journal-title><![CDATA[Revista Facultad de Ingeniería]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Fac. ing.]]></abbrev-journal-title>
<issn>0121-1129</issn>
<publisher>
<publisher-name><![CDATA[Universidad Pedagógica y Tecnológica de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-11292019000400033</article-id>
<article-id pub-id-type="doi">10.19053/01211129.v28.n53.2019.9745.</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Modelamiento estadístico y optimización del proceso de cianuración de un mineral aurífero]]></article-title>
<article-title xml:lang="en"><![CDATA[Statistical Modeling and Optimization of the Cyanidation Process of Gold Mineral]]></article-title>
<article-title xml:lang="pt"><![CDATA[Modelamento estatístico e otimização do processo de cianetação de um mineral aurífero]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Córdoba M.Sc]]></surname>
<given-names><![CDATA[Jairo Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Cañas M.Sc.]]></surname>
<given-names><![CDATA[Carlos Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carmona-Arango]]></surname>
<given-names><![CDATA[María Eugenia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bolívar-García]]></surname>
<given-names><![CDATA[William Hernán]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Antioquia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Antioquia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Antioquia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Antioquia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<volume>28</volume>
<numero>53</numero>
<fpage>33</fpage>
<lpage>51</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-11292019000400033&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-11292019000400033&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-11292019000400033&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En este trabajo se buscó identificar las condiciones y variables óptimas de operación para el procesamiento de un mineral de oro, de tal forma que se alcanzara una alta eficiencia en la recuperación del metal precioso. Inicialmente se llevó a cabo una caracterización del mineral en estudio con la realización de diferentes ensayos de laboratorio. Igualmente se ejecutó un ensayo de moliendabilidad. A la vez, una muestra de mineral fue clasificada mediante una serie de tamices Tyler. Después, el material fue sometido a concentración gravimétrica en mesa Wilfley. Los finos, producto de la concentración, con una granulometría 100 % pasante 170 mallas Tyler, fueron sometidos a pruebas de flotación convencional. De esta forma, con el fin de optimizar la recuperación del oro del mineral aurífero en estudio, se aplicó un diseño experimental de análisis factorial 2k con punto central, tres variables y el método de superficie de respuesta para determinar los parámetros óptimos con el fin de lograr una recuperación eficiente durante la cianuración. Los resultados obtenidos mostraron que el mineral presenta un alto grado de lixiviabilidad en cianuro, lográndose una recuperación del oro del 89.35 %. De acuerdo con esto, se corroboró que el diseño experimental estadístico es una herramienta valiosa para el procesamiento eficiente de los minerales, dado que permite encontrar los parámetros óptimos del proceso de cianuración, como son el tiempo de lixiviación, la granulometría del mineral y la concentración de NaCN. Los resultados conseguidos con la aplicación del diseño estadístico en las pruebas de cianuración posibilitaron determinar las condiciones óptimas de operación para una máxima recuperación de oro.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In this paper, we have sought to identify the conditions and optimal operating variables for the processing of a gold ore, in such a way to achieve high efficiency in the recovery of the precious metal. Initially a characterization of the mineral under study was carried out with the performance of different laboratory tests. Likewise, a grinding test was made. In the same way, a sample of ore was classified using a series of Tyler sieves. Next, the material was subjected to gravimetric concentration on a Wilfley concentrator table. The fines, product of the concentration, with a 100 % granulometry through 170 Tyler meshes, were subjected to conventional flotation tests. In this way, to optimize the recovery of gold from the gold ore under study, an experimental design of 2k factorial analysis with central point, three variables and the response surface method was applied to determine the optimal parameters to achieve an efficient recovery during cyanidation. The results obtained show that the mineral has a high degree of cyanide leachability, obtaining a gold recovery of 89.35 %. The research demonstrated that the statistical experimental design is a valuable tool for the efficient processing of the minerals, since it allows finding the optimal parameters of the cyanidation process such as the leaching time, the granulometry of the mineral and the concentration of NaCN. The results obtained with the application of the statistical design in the cyanidation tests allowed determining the optimal operating conditions for a maximum gold recovery.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo Neste trabalho buscou-se identificar as condições e variáveis ótimas de operação para o processamento de um mineral de ouro, de tal forma que se alcançará uma alta eficiência na recuperação do metal precioso. Inicialmente foi realizada uma caracterização do mineral em estudo com a realização de diferentes ensaios de laboratório. Igualmente executou-se um ensaio de moagem. Ao mesmo tempo, uma amostra de mineral foi classificada mediante uma série de crivos Tyler. Depois, o material foi submetido a concentração gravimétrica em mesa Wilfley. Os finos, produto da concentração, com uma granulometria 100 % passante 170 malhas Tyler, foram submetidos a provas de flotação convencional. Desta forma, com o fim de otimizar a recuperação do ouro do mineral aurífero em estudo, aplicou-se um desenho experimental de análise fatorial 2k com ponto central, três variáveis e o método de superfície de resposta para determinar os parâmetros ótimos com o fim de lograr uma recuperação eficiente durante a cianetação. Os resultados obtidos mostraram que o mineral apresenta um alto grau de lixiviabilidade em cianeto, logrando-se uma recuperação do ouro de 89.35 %. De acordo com isto, corroborou-se que o desenho experimental estatístico é uma ferramenta valiosa para o processamento eficiente dos minerais, dado que permite encontrar os parâmetros ótimos do processo de cianetação, como são o tempo de lixiviação, a granulometria do mineral e a concentração de NaCN. Os resultados conseguidos com a aplicação do desenho estatístico nas provas de cianetação possibilitaram determinar as condições ótimas de operação para uma máxima recuperação do ouro.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[análisis estadístico]]></kwd>
<kwd lng="es"><![CDATA[cianuros]]></kwd>
<kwd lng="es"><![CDATA[flotación]]></kwd>
<kwd lng="es"><![CDATA[metales preciosos]]></kwd>
<kwd lng="es"><![CDATA[minerales]]></kwd>
<kwd lng="es"><![CDATA[oro]]></kwd>
<kwd lng="en"><![CDATA[cyanides]]></kwd>
<kwd lng="en"><![CDATA[floatation]]></kwd>
<kwd lng="en"><![CDATA[gold]]></kwd>
<kwd lng="en"><![CDATA[minerals]]></kwd>
<kwd lng="en"><![CDATA[precious metals]]></kwd>
<kwd lng="en"><![CDATA[statistical analysis]]></kwd>
<kwd lng="pt"><![CDATA[análise estatístico]]></kwd>
<kwd lng="pt"><![CDATA[cianetos]]></kwd>
<kwd lng="pt"><![CDATA[flutuação]]></kwd>
<kwd lng="pt"><![CDATA[metais preciosos]]></kwd>
<kwd lng="pt"><![CDATA[minerais]]></kwd>
<kwd lng="pt"><![CDATA[ouro]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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