PROCESS FOR PRODUCING AN ARITIFICIAL AGGREGATE FROM MINING WASTE, ARTIFICIAL AGGREGATE, CONCRETE COMPOSITION AND USE

The present invention relates to a process for producing an artificial aggregate from ore mining dam waste. The iron ore sandy tailings are mixed with a binder and, by means of a process of mixing and pelleting, form the artificial aggregate. The artificial aggregate thereby produced has a spheroida...

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Bibliographische Detailangaben
Hauptverfasser: DA GAMA Evandro Moraes, FAGUNDES Larissa Virgínia Queiroz, GOMES Abdias Magalhães
Format: Patent
Sprache:eng ; spa
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Zusammenfassung:The present invention relates to a process for producing an artificial aggregate from ore mining dam waste. The iron ore sandy tailings are mixed with a binder and, by means of a process of mixing and pelleting, form the artificial aggregate. The artificial aggregate thereby produced has a spheroidal shape, is coarse, has a rough surface and a colour ranging from pink to dark red. Said artificial aggregate can be used as a replacement for a natural aggregate, and can be used for manufacturing stronger concrete, for the base and subbase of roads, as a decorative element for gardens and flower beds, and is also a means for storing ore mining dam waste in the form of pellets, adding value to said waste and reducing the impact of mining on the environment. La presente invención se relaciona con el proceso de producción de agregados artificiales a partir de residuos de represas de minerales. Los residuos arenosos de mineral de hierro se mezclan con un aglutinante y, a través del proceso de mezclado y granulación, forman el agregado artificial. El agregado artificial producido tiene forma esferoidal, gran tamaño, superficie rugosa y un color que oscila entre el rosa y el rojo oscuro. Este agregado artificial es capaz de sustituir al agregado natural, y puede ser utilizado en la fabricación de un concreto más resistente, para la base y sub-base de caminos, como elemento decorativo para jardines y canteros, además de ser una forma de almacenamiento de residuos de presas de mineral en forma de pelotillas, agregando valor a estos residuos y reduciendo los impactos ambientales de la minería.