Obtención de aleaciones de hierro y escorias abrasivas y refractarias a partir del procesamiento aluminotérmico de cascarillas de laminación
Fecha
2016-07-21
Autores
Díaz Martínez, José Ignacio
Título de la revista
ISSN de la revista
Título del volumen
Editor
Universidad Central ‘‘Marta Abreu’’ de Las Villas. Facultad de Ingeniería Mecánica e Industrial. Departamento de Ingeniería Mecánica
Resumen
Se estudia la obtención de aleaciones de hierro y de productos abrasivos y/o refractarios mediante procesamiento aluminotérmico. Para la conformación de las mezclas se realiza un diseño de experimentos de tipo Mc Lean Anderson, donde las variables dependientes son la cascarilla de laminación, virutas de aluminio y caliza. De esta manera fueron conformadas 7 cargas, las que fueron procesadas en un reactor de grafito, obteniéndose las correspondientes aleaciones y escorias. Las aleaciones obtenidas están integradas fundamentalmente por: carbono de 0.3 – 1.26 %, silicio de 0.3 - 1.61 %, manganeso de 0.1 – 0.96 % y aluminio de 0.25 – 1.88 %, con una recuperación del metal entre 73 – 91 % y de escoria entre 93 – 110 %.
De acuerdo a los resultados del diseño, dos de las mezclas estudiadas fueron reproducidas a mayor escala, donde una de las cargas fue vertida en agua, obteniéndose resultados similares a los del diseño en todos los casos. Las escorias de estas mezclas fueron trituradas y clasificadas granulométricamente, separándose magnéticamente cada una de las fracciones, obteniéndose que la escorias están formadas mayoritariamente por fracciones no magnéticas.
The production of ferroalloys and abrasives and refractory products is studied by aluminothermic processing. To form blends design experiments Mc Lean Anderson type, where the dependent variables are the mill scale, aluminum and limestone chips is performed. Thus they were formed seven charges, which were processed in a graphite reactor, obtaining the corresponding alloys and slags. The alloys obtained are composed essentially: carbon 0.3 - 1.26%, silicon 0.3 - 1.61%, manganese 0.1 - 0.96% aluminum 0.25 - 1.88%, with a recovery of metal from 73 - 91% and slag between 93-110%. According to the results of design, two of the mixtures studied were reproduced on a larger scale, where one of the fillers was poured into water to obtain similar to the design results in all cases. These slags were crushed and mixtures granulometrically classified, magnetically separating each of the fractions, obtaining the slag are mostly formed by nonmagnetic fractions.
The production of ferroalloys and abrasives and refractory products is studied by aluminothermic processing. To form blends design experiments Mc Lean Anderson type, where the dependent variables are the mill scale, aluminum and limestone chips is performed. Thus they were formed seven charges, which were processed in a graphite reactor, obtaining the corresponding alloys and slags. The alloys obtained are composed essentially: carbon 0.3 - 1.26%, silicon 0.3 - 1.61%, manganese 0.1 - 0.96% aluminum 0.25 - 1.88%, with a recovery of metal from 73 - 91% and slag between 93-110%. According to the results of design, two of the mixtures studied were reproduced on a larger scale, where one of the fillers was poured into water to obtain similar to the design results in all cases. These slags were crushed and mixtures granulometrically classified, magnetically separating each of the fractions, obtaining the slag are mostly formed by nonmagnetic fractions.
Descripción
Palabras clave
Procesamiento Aluminotérmico, Materiales Abrasivos, Materiales Refractarios