Proyecto y diseƱo de una planta de cementaciĆ³n de cobre
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2018
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Universidad AndrƩs Bello
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Resumen
El presente estudio da cuenta de tratar minerales de alta ley para la pequeƱa minerĆa mediante el proceso de cementaciĆ³n de cobre, previamente tratado por lixiviaciĆ³n en tanques de agitaciĆ³n, con el fin de obtener una mayor recuperaciĆ³n al menor costo.
La lixiviaciĆ³n Ć”cida es el proceso mĆ”s utilizado para la recuperaciĆ³n de cobre desde minerales oxidados. La rentabilidad de esta operaciĆ³n va a estar determinada por el consumo de Ć”cido sulfĆŗrico y el grado de extracciĆ³n de cobre. Se sabe que un aumento en la concentraciĆ³n de Ć”cido en las soluciones lixiviantes impulsa una mayor recuperaciĆ³n de cobre, pero tambiĆ©n se produce un elevando consumo de Ć”cido por especies reactivas de la ganga, lo que repercute negativamente en la economĆa del proceso. De estudios anteriores se sabe que con una adecuada selecciĆ³n del nivel de concentraciĆ³n de Ć”cido es posible optimizar el consumo de Ć”cido en el proceso.
Los resultados de las pruebas de laboratorio han mostrado que la recuperaciĆ³n de mineral de cobre en el proceso de lixiviaciĆ³n por agitaciĆ³n fue de 89% para un mineral de tamaƱo 150 [Ī¼m] a los 60 minutos de operaciĆ³n, en tanto la recuperaciĆ³n de cobre en el proceso de cementaciĆ³n alcanzĆ³ un 91,28% a los 60 minutos de operaciĆ³n. La ley de cobre obtenida en todo el proceso fue de un 90%.
The present study has high grade minerals for small mining through the process of copper cementation, previously treated by leaching in agitation tanks, to obtain greater recovery at the lowest cost. Acid leaching is the most used process for the recovery of copper from oxidized minerals. The profitability of this operation is related to the consumption of sulfuric acid and the degree of copper extraction. The consumption of acid in the reactive solutions of the gangue can be increased, which negatively affects the economy of the process. From the previous studies it is known that with an appropriate selection of the level of acid concentration it is possible to optimize the consumption of acid in the process. The results of the laboratory tests have shown that the recovery of copper ore in the process of leaching by agitation was 89% for a mineral of size 150 [Ī¼m] after 60 minutes of operation, while the recovery of copper in the cementing process reached 91.28% after 60 minutes of operation. The copper law obtained in the whole process was 90%.
The present study has high grade minerals for small mining through the process of copper cementation, previously treated by leaching in agitation tanks, to obtain greater recovery at the lowest cost. Acid leaching is the most used process for the recovery of copper from oxidized minerals. The profitability of this operation is related to the consumption of sulfuric acid and the degree of copper extraction. The consumption of acid in the reactive solutions of the gangue can be increased, which negatively affects the economy of the process. From the previous studies it is known that with an appropriate selection of the level of acid concentration it is possible to optimize the consumption of acid in the process. The results of the laboratory tests have shown that the recovery of copper ore in the process of leaching by agitation was 89% for a mineral of size 150 [Ī¼m] after 60 minutes of operation, while the recovery of copper in the cementing process reached 91.28% after 60 minutes of operation. The copper law obtained in the whole process was 90%.
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Tesis (IngenierĆa Civil en Metalurgia)
Palabras clave
Cobre, ExtracciĆ³n MetalĆŗrgica, Costos del Tratamiento, Minerales, CementaciĆ³n, AnĆ”lisis.