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Bibliographic Details
Main Author:	Armando Rojas Vargas
Format:	Artículo científico
Language:	es
Published:	Universidad de Oriente 2008
Subjects:	Ingeniería níquel magnesio Lixiviación amoniacal
Online Access:	https://www.redalyc.org/articulo.oa?id=445543755006
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FORMACIÓN DEL MAGNESIO LIBRE EN LA REDUCCIÓN DE LATERITAS E INTERACCIÓN CON EL EXTRACTABLE DE NÍQUEL Armando Rojas Vargas Georgina Tavío González Lisset Chapman González Ingeniería níquel magnesio Lixiviación amoniacal En este trabajo se realizó un estudio del efecto de las condiciones de reducción sobre la formación del magnesio libre durante la reducción. Las variables independientes fueron: tiempo de retención, temperatura de reducción y por ciento de petróleo. El contenido de níquel en el mineral alimentado fue de 1,16 %; cobalto, 0,102 %; hierro, 48,1 %; sílice, 5,16 %, magnesio, 2,36 % y aluminio 5,25 %.. Se obtuvo que en la medida que aumentan la temperatura de reducción y el tiempo de retención, así como disminuye el por ciento de petróleo, decrece el contenido de magnesio libre. Las variables independientes que ejercen significación estadística sobre el extractable de níquel, no son igualmente significativas sobre la formación del magnesio libre. Con determinado contenido de magnesio libre en el mineral reducido, es posible obtener alto y bajo extractables. 2008 artículo científico 0041-8420 https://www.redalyc.org/articulo.oa?id=445543755006 es http://www.redalyc.org/revista.oa?id=4455 Tecnología Química application/pdf Universidad de Oriente Tecnología Química (Cuba) Num.1 Vol.XXVIII

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// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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