{"id":11096,"date":"2021-11-10T06:52:37","date_gmt":"2021-11-10T06:52:37","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=11096"},"modified":"2021-11-10T06:52:37","modified_gmt":"2021-11-10T06:52:37","slug":"fluxes-for-volta-aluminium-melting","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/fluxes-for-volta-aluminium-melting\/","title":{"rendered":"Fundentes para la fundici\u00f3n de aluminio Volta"},"content":{"rendered":"

Los fundentes para la fundici\u00f3n de aluminio de Volta se utilizan principalmente para eliminar impurezas. La clave de la eliminaci\u00f3n de impurezas consiste en aprovechar la diferencia de propiedades f\u00edsicas o qu\u00edmicas entre las inclusiones y el aluminio fundido, con el fin de lograr la separaci\u00f3n entre ambos y conseguir as\u00ed la eliminaci\u00f3n de impurezas y de hidr\u00f3geno.<\/p>\n

Los fundentes para la fusi\u00f3n de aluminio Volta utilizan principalmente una mezcla de NaCl y KCl como matriz. Estos dos cloruros son inertes frente al aluminio fundido. Cuando los componentes son 45% y 55%, la temperatura eut\u00e9ctica de la mezcla es de solo unos 650 \u2103, inferior al punto de fusi\u00f3n del aluminio fundido. Aunque la mezcla tiene un punto de fusi\u00f3n bajo y presenta las caracter\u00edsticas de un fundente, solo contiene dos componentes, y su capacidad para capturar y disolver impurezas es muy escasa, lo que no favorece las condiciones cin\u00e9ticas de eliminaci\u00f3n de impurezas, por lo que es necesario a\u00f1adir otros aditivos.<\/p>\n

En el fundente a base de NaCl-KCl, una cantidad adecuada de fluoruro puede adsorber y disolver la al\u00famina, y controlar adecuadamente el punto de fusi\u00f3n de la mezcla de sales. Tambi\u00e9n puede facilitar la ruptura y eliminaci\u00f3n de la pel\u00edcula de \u00f3xido en la interfaz entre el fundente y el aluminio, reducir la adhesi\u00f3n del aluminio fundido a las inclusiones y favorecer la migraci\u00f3n de estas hacia la interfaz. Al mismo tiempo, la eficiencia de refinado por flujo<\/a> se incrementa de 30% a 70%~90%. Entre los aditivos fluorados m\u00e1s utilizados se encuentran el NaF, el AlF\u2083, el MgF\u2082, el Na\u2083AlF\u2086 y el CaF\u2082.<\/p>\n

\"\"<\/p>\n

Cuando Volta Aluminium vuelve a fundir aluminio y aleaciones de aluminio, la p\u00e9rdida por oxidaci\u00f3n del aluminio es muy elevada. La adici\u00f3n de algunos componentes que pueden modificar la calidad de los granos cristalinos o facilitar la disipaci\u00f3n del calor permite que el fundente logre el objetivo de un tratamiento integral del aluminio fundido, como es el caso del carbonato.<\/p>\n

Volta Aluminium Company (VALCO) es una de las empresas m\u00e1s grandes de Ghana y la segunda fundici\u00f3n de aluminio m\u00e1s grande de \u00c1frica al sur del S\u00e1hara. Fue fundada por Kaiser Aluminium, pero actualmente es propiedad al 100 % del Gobierno de Ghana.<\/p>\n

VALCO sigue desempe\u00f1ando un papel clave en los esfuerzos del Gobierno de Ghana por desarrollar una industria integrada del aluminio (IAI) en el pa\u00eds. Con VALCO como pilar del proyecto de la IAI, Ghana se dispone a a\u00f1adir valor a sus m\u00e1s de 700 millones de toneladas m\u00e9tricas de yacimientos de bauxita en el pa\u00eds, situados en Kibi y Nyinahin, con el fin de generar m\u00e1s de 1,05 billones de d\u00f3lares estadounidenses y crear alrededor de 2,3 millones de puestos de trabajo de calidad y sostenibles. Un estudio sobre la viabilidad de la fundici\u00f3n de VALCO confirm\u00f3 que VALCO, debidamente integrada en la agenda de desarrollo de Ghana, servir\u00e1 como aut\u00e9ntico pilar de la industria integrada del aluminio de Ghana.<\/p>\n

En la actualidad, VALCO es el motor de la industria transformadora del aluminio en Ghana gracias al suministro de metal, con los beneficios que ello conlleva en materia de empleo. Adem\u00e1s, VALCO se est\u00e1 posicionando para dar cabida al crecimiento previsto de la industria transformadora del aluminio en Ghana.<\/p>","protected":false},"excerpt":{"rendered":"

The Fluxes for Volta Aluminium Melting are mainly used to remove impurities. The essence of impurity removal is to use the difference in physical or…<\/p>","protected":false},"author":1,"featured_media":11106,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[12791,12790],"class_list":["post-11096","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-flux-components","tag-fluxes-for-volta-aluminium-melting"],"yoast_head":"\nFluxes for Volta Aluminium Melting, Flux Components<\/title>\n<meta name=\"description\" content=\"The Fluxes for Volta Aluminium Melting are mainly used to remove impurities. 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