<?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>2224-6185</journal-id>
<journal-title><![CDATA[Tecnología Química]]></journal-title>
<abbrev-journal-title><![CDATA[RTQ]]></abbrev-journal-title>
<issn>2224-6185</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Oriente]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2224-61852023000300660</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Precipitación química de Ni(OH)2 del licor producto de lixiviación en la Tecnología Caron]]></article-title>
<article-title xml:lang="en"><![CDATA[Chemical precipitation of Ni(OH)2 from the product-liquor in the Caron Technology]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vidiaux-Arcia]]></surname>
<given-names><![CDATA[Lilian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Frómeta]]></surname>
<given-names><![CDATA[Luis Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cisneros-Sánchez]]></surname>
<given-names><![CDATA[Deisy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Investigaciones del Níquel  ]]></institution>
<addr-line><![CDATA[Moa Holguín]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Cuba Ron Ronera  ]]></institution>
<addr-line><![CDATA[Santiago de Cuba ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>43</volume>
<numero>3</numero>
<fpage>660</fpage>
<lpage>675</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2224-61852023000300660&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2224-61852023000300660&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2224-61852023000300660&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Se realizaron pruebas a escala de laboratorio con el objetivo de evaluar la precipitación química de hidróxido de níquel(II), a partir del licor producto del proceso de lixiviación carbonato amoniacal, luego de la separación de cobalto, procedente de la empresa productora de níquel Ernesto Che Guevara, Cuba. El procedimiento consistió en la pre-destilación del licor y la posterior precipitación del níquel con hidróxido de sodio. Como resultado, se acondicionó el licor de síntesis hasta una concentración de amoníaco de 29,91 g/L, níquel 8,92 g/L y magnesio 0,136 g/L, con la presencia de trazas de manganeso, cobalto, hierro, cobre y cinc. El pH y el tiempo de reacción ejercieron una influencia estadísticamente significativa sobre la precipitación del Ni(OH)2. Se determinó que la máxima eficiencia de precipitación de níquel de un 92,41 % se alcanza a un pH 13,5, tiempo de residencia 1 h y consumo específico de 5,25 g NaOH por g Ni(OH)2. El precipitado presentó una concentración de níquel de 60,13 (+/-2,10) % y 0,70 % de impurezas metálicas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ ABSTRACT Laboratory scale tests were carried out with the objective of evaluating the chemical precipitation of nickel (II) hydroxide, from the liquor product of the ammoniacal carbonate leaching process, after the separation of cobalt, from the nickel producer company Ernesto Che Guevara, Cuba. The procedure consisted of the pre-distillation of the liquor and the subsequent precipitation of the nickel with sodium hydroxide. As a result, the synthesis liquor was conditioned up to a concentration of ammonia of 29,91 g/L, nickel 8,92 g/L and magnesium 0,136 g/L, with the presence of traces of manganese, cobalt, iron, copper and zinc. The pH and the reaction time exerted a statistically significant influence on the Ni(OH)2 precipitation. It was determined that the maximum nickel precipitation efficiency of 92.41 % is reached at pH 13.5, residence time 1 h and specific consumption of 5.25 g NaOH per g Ni(OH)2. The precipitate presented a nickel concentration of 60,13 (+/-2,10) % and 0,70 % of metallic impurities.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[hidróxido de níquel]]></kwd>
<kwd lng="es"><![CDATA[licor producto]]></kwd>
<kwd lng="es"><![CDATA[precipitación]]></kwd>
<kwd lng="en"><![CDATA[nickel hydroxide]]></kwd>
<kwd lng="en"><![CDATA[product liquor]]></kwd>
<kwd lng="en"><![CDATA[precipitation]]></kwd>
</kwd-group>
</article-meta>
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