Propuesta de modelo de optimización de tiempo de vida útil de depósito de relaves espesados.

Saved in:

Bibliographic Details
Title:	Propuesta de modelo de optimización de tiempo de vida útil de depósito de relaves espesados.
Alternate Title:	Proposal model for optimizing the life cycle of thickened tailings deposits.
Authors:	Martínez, Joaquín¹ joaquin.me500@gmail.com, Franco, Edwin¹ edwinfranco@ucn.cl
Source:	INGENIARE - Revista Chilena de Ingeniería. abr2019, Vol. 27 Issue 2, p236-245. 10p.
Subjects:	Tailings dams, Rheology, Volume (Cubic content), Ore deposits, Heuristic
Abstract (English):	This work proposes a planning methodology that optimizes the life cycle of thickened tailings deposits, specifically the Centinela Mine thickened tailings deposit owned by Antofagasta Minerals. The methodology included metallurgical concepts, heuristics methods, integer programming and CAD tools for tailings 3D modeling. The thickened tailing deposit was first geometrically characterized, considering its slopes and volumetric capacities in its different sectors. Then, a relationship between the rheological characteristics of the tailings slurry and the beach slope in the deposit was proposed. For this, online data and laboratory tests results analysis were carried out. As a consequence, it was possible to create a tool that calculates the life cycle of the deposit by entering data of nominal, pessimistic or optimistic entries. In addition to that, it allows obtaining the history of the already deposited tailings to facilitate operational follow-up. The results show the maximum possible capacity that could be attained by improving surface shape optimization. Finally, a planning methodology, adaptable to changing conditions is generated, with the main objective of defining where to discharge tailings, based on the slopes and available capacities of the deposit and the rheological characteristics of the tailings slurry, thus maximizing the use of the different areas of the deposit. [ABSTRACT FROM AUTHOR]
Abstract (Spanish):	Este trabajo propone una metodología de planificación para optimizar el tiempo de vida útil de los depósitos de relaves espesados, específicamente aplicado al depósito de Minera Centinela, perteneciente a Antofagasta Minerals. En él, se utilizaron conceptos metalúrgicos, métodos heurísticos, programación entera y herramientas CAD para la modelación de los relaves en 3D. Para comenzar, se caracterizó geométricamente el depósito, de donde se estimaron principalmente las pendientes de la superficie y las distintas capacidades volumétricas remanentes. Luego, se caracterizó la pulpa de relaves, conociendo sus características reológicas para relacionarlas a una pendiente de disposición. Se trabajó con datos de flujo-metros y análisis de resultados de pruebas de laboratorio. De esta manera, se logró crear una herramienta que calcula el tiempo de vida útil del depósito, ingresando datos de entradas nominales, pesimistas u optimistas. Además, permite conocer el historial de los relaves descargados, facilitando el seguimiento operacional. Los resultados obtenidos determinan la capacidad máxima posible a la que buscaría llegar la planificación al mejorar la geometría de la superficie. Finalmente, se tiene una metodología de planificación, adaptable a condiciones cambiantes, con el objetivo principal de definir volúmenes de relaves espesados a depositar, a partir de las pendientes, capacidades disponibles del depósito y de las características reológicas de los relaves producidos, maximizando la utilización de las distintas áreas del depósito. [ABSTRACT FROM AUTHOR]
	Copyright of INGENIARE - Revista Chilena de Ingeniería is the property of Universidad de Tarapaca and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database:	Engineering Source

Description
Abstract:	This work proposes a planning methodology that optimizes the life cycle of thickened tailings deposits, specifically the Centinela Mine thickened tailings deposit owned by Antofagasta Minerals. The methodology included metallurgical concepts, heuristics methods, integer programming and CAD tools for tailings 3D modeling. The thickened tailing deposit was first geometrically characterized, considering its slopes and volumetric capacities in its different sectors. Then, a relationship between the rheological characteristics of the tailings slurry and the beach slope in the deposit was proposed. For this, online data and laboratory tests results analysis were carried out. As a consequence, it was possible to create a tool that calculates the life cycle of the deposit by entering data of nominal, pessimistic or optimistic entries. In addition to that, it allows obtaining the history of the already deposited tailings to facilitate operational follow-up. The results show the maximum possible capacity that could be attained by improving surface shape optimization. Finally, a planning methodology, adaptable to changing conditions is generated, with the main objective of defining where to discharge tailings, based on the slopes and available capacities of the deposit and the rheological characteristics of the tailings slurry, thus maximizing the use of the different areas of the deposit. [ABSTRACT FROM AUTHOR]
ISSN:	07183291