Determinación a nivel de laboratorio de los parámetros cinéticos de molienda para distintos cuerpos moledores y su efecto en la moliendabilidad del mineral
Cargando...
Archivos
Fecha
2019
Autores
Profesor/a Guía
Facultad/escuela
Idioma
es
Título de la revista
ISSN de la revista
Título del volumen
Editor
Universidad Andrés Bello
Nombre de Curso
Licencia CC
Licencia CC
Resumen
Este trabajo busca determinar los parámetros cinéticos de molienda característicos que se obtienen para diferentes tipos de cuerpos moledores y el efecto de estos sobre la calidad del producto final de un circuito típico de molienda/clasificación, dado por el P80.
Se realizaron dos estudios; Para el 1er estudio: Primero determinar las condiciones de operación y diseño de cada ensayo de molienda de laboratorio. Segundo, la homogenización y preparación del mineral. Tercero, la clasificación y caracterización de los cuerpos moledores ya usados. Cuarto, estimación del área específica de cada cuerpo moledor. Quinto, determinación de las composiciones de las cargas de bolas para los ensayos de batch. Finalmente, mediante el software Moly-Cop Tools se estimarán los parámetros cinéticos de molienda del mineral para cada ensayo y se proyectará la respuesta metalúrgica de un circuito típico de molienda/clasificación sobre la calidad del producto final, dado por el P80.
Para el 2do Estudio: Primero determinar las condiciones de operación y diseño de los ensayos de molienda. Segundo, la preparación del mineral para los ensayos de molienda. Tercero, determinación de la carga según una tendencia en porcentaje. Finalmente, mediante simulación digital en el software Moly-Cop Tools, se estimará la respuesta metalúrgica del producto final, dado por el P80.
En base a los resultados de las tablas 9-10-11 y 12 se concluye que para el rango de operación de los molinos secundarios de bolas que utilizan como tamaño máximo de recarga de bolas de 3,0’’ o 2,5’’ de diámetro, no existirá un efecto negativo de las bolas clasificadas sobre la calidad del producto final P80.
En base a los resultados de la Tablas 17 y 18 se concluye que la bola esférica tiene una superficie menor que en igualdad de volumen que otra figura, produciendo así que a medida que el cuerpo moledor se vaya desgastando entregará una razón de reducción, R80, más fino que cuerpos moledores nuevos de 3,0’’.
This work seeks to determine the characteristic grinding kinetic parameters that are obtained for different types of grinding bodies and the effect of these on the quality of the final product of a typical milling/sorting circuit, given by the P80. Two studies were conducted; For the 1st study: first determine the operating and design conditions of each laboratory grinding test. Second, the homogenization and preparation of the mineral. Third, the classification and characterization of the grinding bodies already used. Fourth, estimation of the specific area of each grinding body. Fifth, determination of the compositions of the ball loads for batch trials. Finally, using the Moly-Cop Tools software, the kinetic parameters for grinding the ore will be estimated for each assay and the metallurgical response of a typical grinding/classification circuit on the quality of the final product, given by the P80, will be projected. For the 2nd study: first determine the operating conditions and design of the grinding tests. Second, the preparation of the ore for the grinding tests. Third, determination of the load according to a percentage trend. Finally, by means of digital simulation in the Moly-Cop Tools software, the metallurgical response of the final product, given by the P80, will be estimated. Based on the results of tables 9-10-11 and 12 It is concluded that for the operating range of the secondary balls mills which use as maximum size of ball reloading of 3.0 ' ' or 2.5 ' ' in diameter, there will not be a negative effect of the balls rated on the C P80 final product deity. Based on the results of tables 17 and 18 It is concluded that the spherical ball has a smaller surface than in equal volume than another figure, producing so that as the grinding body becomes worn out it will deliver a reduction ratio , R80, thinner than 3.0 ' ' new grinding bodies.
This work seeks to determine the characteristic grinding kinetic parameters that are obtained for different types of grinding bodies and the effect of these on the quality of the final product of a typical milling/sorting circuit, given by the P80. Two studies were conducted; For the 1st study: first determine the operating and design conditions of each laboratory grinding test. Second, the homogenization and preparation of the mineral. Third, the classification and characterization of the grinding bodies already used. Fourth, estimation of the specific area of each grinding body. Fifth, determination of the compositions of the ball loads for batch trials. Finally, using the Moly-Cop Tools software, the kinetic parameters for grinding the ore will be estimated for each assay and the metallurgical response of a typical grinding/classification circuit on the quality of the final product, given by the P80, will be projected. For the 2nd study: first determine the operating conditions and design of the grinding tests. Second, the preparation of the ore for the grinding tests. Third, determination of the load according to a percentage trend. Finally, by means of digital simulation in the Moly-Cop Tools software, the metallurgical response of the final product, given by the P80, will be estimated. Based on the results of tables 9-10-11 and 12 It is concluded that for the operating range of the secondary balls mills which use as maximum size of ball reloading of 3.0 ' ' or 2.5 ' ' in diameter, there will not be a negative effect of the balls rated on the C P80 final product deity. Based on the results of tables 17 and 18 It is concluded that the spherical ball has a smaller surface than in equal volume than another figure, producing so that as the grinding body becomes worn out it will deliver a reduction ratio , R80, thinner than 3.0 ' ' new grinding bodies.
Notas
Tesis (Ingeniero Civil en Metalurgia)
Palabras clave
Beneficio de Minerales, Industria Minera, Equipos y Accesorios