MINERAL
PROCESSING

Comminution is incredibly energy-intensive, and improving efficiency not only saves mining operations money but also reduces their ecological footprint. This working group aims to assist the industry by defining methods and best practices for the industry.

WHY IT IS IMPORTANT FOR THE MINING INDUSTRY

Global collaboration in mineral processing is important because, while technology and society are advancing rapidly, this field employs long-term assets that make it challenging to change. Further, processing is energy-intensive, and collaboration is needed to meet the global demand for energy efficiency.

ABOUT THE WORKING GROUP

This working group, formerly the Industrial Comminution Efficiency Working Group, is a community of interest for operators, suppliers, subject-matter experts and other stakeholders with an interest in mineral processing to discuss and address common industry challenges. Potential topics include comminution efficiency, plant improvement and design, emerging technologies, metallurgical accounting and testing procedures.

Objectives

  • Develop guidelines and tools to meet common industry needs in mineral processing
  • Coordinate a global network of multi-disciplinary and multi-sectorial professionals with knowledge on mineral processing to share lessons learned, best practices and drive valuable conversations
  • Enable a global platform for knowledge sharing on mineral processing

INDUSTRIAL COMMINUTION EFFICIENCY SUB-COMMITTEE

The Industrial Comminution Efficiency Working Group aims to provide tools for practitioners to measure the energy efficiency of comminution circuits using standardized metrics and methodologies. The guidelines developed by this group aim to define the recommended methods for quantifying grinding circuit efficiency using grinding power analysis, following the approaches developed by Bond (1961) and Morrell (2009). The group is a community of interest that includes operators, suppliers, and subject-matter experts interested in improving comminution efficiency in their operations.

Objectives

  • Define standard methods for quantifying grinding circuit efficiency using grinding power analysis
  • Coordinate a global network of multi-disciplinary and multi-sector professionals with knowledge on comminution efficiency to share lessons learned, best practices and drive valuable conversations
  • Enable a centre of knowledge, training and sharing on the topic of comminution efficiency

GMG PUBLICATIONS AND RESOURCES

2016 Aug | Morrell method for determining comminution circuit specific energy and assessing energy utilization efficiency of existing circuits

The guideline reviews the data required for the analysis, including hardness characterization data generated from the SMC Test®, the Bond Ball Mill Test Work Index and the Morrell equations and their application.

 2016 Apr | Methods to survey and sample grinding circuits for determining energy efficiency

This guideline details methods to survey and sample grinding circuits to generate sufficient information of suitable quality to support reliable efficiency analysis by these and comparable methods. It deals specifically with surveying and sampling Autogenous Grinding (AG), Semi-Autogenous Grinding (SAG), rod, and ball mill circuits operating within the normal range of application. 

2016 Feb | Determining the Bond Efficiency of industrial grinding circuits

The Bond method allows for quantification and comparison of relative energy efficiencies of most industrial communication circuits. It is an essential tool for managing the important business (cost) of grinding.

UPDATES

SURVEY RESULTS. The results from the Mineral Processing Working Group survey are now available. Click here to view. 

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