<?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>2617-4731</journal-id>
<journal-title><![CDATA[Revista de la Sociedad Científica del Paraguay]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Soc. cient. Parag.]]></abbrev-journal-title>
<issn>2617-4731</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Científica del Paraguay]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2617-47312020000200101</article-id>
<article-id pub-id-type="doi">10.32480/rscp.2020.252.101</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Chemical and microstructural characterization of blast furnace slag]]></article-title>
<article-title xml:lang="es"><![CDATA[Caracterización química y microestructural de escoria de alto horno]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gill]]></surname>
<given-names><![CDATA[Blanca]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Pavetti]]></surname>
<given-names><![CDATA[Belén]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Monteiro]]></surname>
<given-names><![CDATA[Magna]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Asunción Facultad Politécnica ]]></institution>
<addr-line><![CDATA[San Lorenzo ]]></addr-line>
<country>Paraguay</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro de Investigación en Matemática Laboratorio de Ecomateriales ]]></institution>
<addr-line><![CDATA[Asunción ]]></addr-line>
<country>Paraguay</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<volume>25</volume>
<numero>2</numero>
<fpage>101</fpage>
<lpage>110</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_arttext&amp;pid=S2617-47312020000200101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_abstract&amp;pid=S2617-47312020000200101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_pdf&amp;pid=S2617-47312020000200101&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Blast furnace slag is a byproduct of iron and steel production, whose physicochemical characteristics are influenced by the type of production process applied. Furthermore, its chemical composition depends on the raw materials used, the most common ones being mineral iron, coke and limestone. Blast slag can solidify into four different forms: crystallized, granulated, pelletized and expanded. Crystallized slag obtained from blast furnace production was studied in this work. This slag has high porosity and reduced mechanical strength when compared to other slags. The samples were submitted to thermal treatment at 860, 960 and 1060 °C for one hour. These samples were characterized by X-ray diffraction (XRD), infrared spectrometry (FTIR), X-ray Fluorescence (XRF) and scanning electronic microscopic/EDS. Based on the results, it was possible to predict the behavior of crystallization of the slag at different calcination temperatures and identify the present phases at each temperature range. This work aimed to characterize the blast furnace slag residue from steel production from Acepar Company S.A., in order to propose a higher added value application related to advanced ceramics production.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La escoria de alto horno es un subproducto de la producción de hierro y acero, cuyas características fisicoquímicas están influenciadas por el tipo de proceso de producción aplicado. Además, su composición química depende de las materias primas utilizadas, siendo las más comunes el mineral de hierro, el coque y la piedra caliza. La escoria puede solidificarse en cuatro formas diferentes: cristalizada, granulada, pelletized y expandida. La escoria cristalizada obtenida de la producción de altos hornos se estudió en este trabajo. Esta escoria tiene una alta porosidad y una resistencia mecánica reducida en comparación con otras escorias. Las muestras fueron sometidas a tratamientos térmicos a 860, 960 y 1060 °C por una hora. Estas muestras fueron caracterizadas por difracción de rayos-X (XRD), espectrometría de infrarrojos con transformada de Fourier (FTIR), fluorescencia de rayos-X (XRF) y microscopia electrónica de barrido/EDS. Con base en los resultados, fue posible predecir el comportamiento de la cristalización de la escoria a diferentes temperaturas de calcinación e identificar las fases presentes en cada máximo de temperatura. Este trabajo tuvo como objetivo caracterizar la escoria de alto horno, residuo de la producción de acero de la Compañía Acepar, con el fin de proponer una aplicación de mayor valor agregado, relacionada con la producción de cerámicas avanzadas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[characterization]]></kwd>
<kwd lng="en"><![CDATA[blast furnace slag]]></kwd>
<kwd lng="en"><![CDATA[thermal treatment]]></kwd>
<kwd lng="en"><![CDATA[ceramic]]></kwd>
<kwd lng="es"><![CDATA[caracterización]]></kwd>
<kwd lng="es"><![CDATA[escoria de alto horno]]></kwd>
<kwd lng="es"><![CDATA[tratamiento térmico]]></kwd>
<kwd lng="es"><![CDATA[cerámica]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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