کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
234147 465389 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A novel approach to the geometallurgical modelling of the Collahuasi grinding circuit
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
A novel approach to the geometallurgical modelling of the Collahuasi grinding circuit
چکیده انگلیسی

Compañía Minera Doña Inés de Collahuasi SCM initiated the development of a new geometallurgical model to characterize its Rosario deposit in terms of its comminution circuit capacity and flotation performance. The comminution component of the model is now complete and is described in detail in this article.The model uses a combination of simulation and power-based approaches to relate ore hardness and flotation feed size to grinding circuit throughput. Ore hardness values are provided by Collahuasi’s block model which has been populated with ore characterisation data derived from Bond ball work index tests, JK drop-weight tests and SMC Tests® on diamond drill cores. The influences of planned and unplanned maintenance downtime are taken into account both in terms of frequency and duration.The accuracy of the model is demonstrated using weekly production data taken from the period January–December 2008, showing an average relative error of 5.2% and an R2 value of 0.95.The model is now in successful routine use at the mine for planning purposes and is currently in the process of being further developed to incorporate the response of the flotation circuit.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Minerals Engineering - Volume 22, Issue 12, October 2009, Pages 1060–1067
نویسندگان
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