CMIC - Processing Group - Energy in Comminution
Comminution Technology Appraisal Study
Persio Rosario, PhD
Director - Comminution
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Presentation outline
Introduction
Objective
Boundary Limits
Execution Plan
Phase 1
Phase 2
Progress of Work
Phase 1
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Introduction
CIMC identified the issue: energy in ore comminution
Intends to allocate funding to efforts to reduce energy requirements and
there is a need to determine where to focus the efforts
The appraisal study was defined and Hatch came onboard
For over 50 years Hatch have worked alongside clients to develop and
implement innovations in the mining and metals industries
Hatch brings a wealth of skills to support the process of innovation on
projects: idea generation techniques; feasibility evaluation and testing
The global nature and diversity of Hatch's business allows crossregional and cross-business sector transfers of novel ideas
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Objective
The overall objective of this long-term program is to reduce the energy
required for comminution by greater than 50%
Assessment of the value of existing and emerging technologies to reduce
the energy required for industrial ore comminution
What are the engineering limitations of existing “more efficient” technologies?
What is the potential value of extending existing technologies into newer
applications?
What are prospects of non-conventional approaches?
Are there notable alternative technologies “under the radar screen” that
should be considered?
The assessment will result in a report identifying the approaches and
technologies to be considered in a multi-year development plan
(short-term, long-term, academic and/or industrial testing…)
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Boundary Limits
This study is on the process technologies of comminution
Out of scope:
methods which reduce the size of feed to the comminution plant
methods which reduce the volume of feed to the mill like pre-concentration
recovery of energy from process streams in the mill
Intelligent blasting, ore sorting, energy recovery are being studied by other CMIC groups
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Execution Plan
Phase 1
Literature review: investigation of technical publications and patents
Compilation of a list containing all potential technologies, including:
Contact and interview: consultants/experts, academia, suppliers…
(Global – Hatch’s group extensive network worldwide)
extension of existing technologies into newer applications
non-conventional comminution approaches
notable alternative technologies “under the radar screen”
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Execution Plan
Phase 1
Details to be included in the list:
maturity level of development
possible % reduction in energy requirement
applicable size range, e.g. from 50mm to 1mm
feasibility perception towards industrial application
inhibiting factors and possible ways to mitigate them
Develop basis for ranking all listed technologies (analysis matrix)
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Execution Plan
Phase 1
Present findings to CIMC processing group, including:
the complete matrix with resulting ranking
detailed information on the top 5 technologies
Together with CIMC processing group select the best 2 or 3 cases for
further investigation
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Execution Plan
Phase 2
Deeper investigation on top 2 or 3 selected technologies
Together with CIMC processing group select the best technology for the
development plan and funding
Completion of final report which includes a development plan (short-term,
long-term, academic and industrial batch/pilot testing)
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Execution Plan – Work Progress
Phase 1
Literature review: investigation of technical publications and patents
Compilation of a list containing all potential technologies, including:
Contact and interview: consultants/experts, academia, suppliers…
(Global – Hatch’s group extensive network worldwide)
extension of existing technologies into newer applications
non-conventional comminution approaches
notable alternative technologies “under the radar screen”
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Execution Plan – Work Progress
Phase 1
Literature review: investigation of technical publications and patents
33 Journal papers
135 Conference papers
24 Patents
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Execution Plan – Work Progress
Phase 1
Literature review: investigation of technical publications and patents
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Execution Plan – Work Progress
Phase 1
Literature review: investigation of technical publications and patents
Compilation of a list containing all potential technologies, including:
Contact and interview: consultants/experts, academia, suppliers…
(Global – Hatch’s group extensive network worldwide)
extension of existing technologies into newer applications
non-conventional comminution approaches
notable alternative technologies “under the radar screen”
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Execution Plan – Work Progress
Phase 1
Contact
More than 30 names suggested
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Execution Plan – Work Progress
Phase 1
Interviews
Elaboration and
refinement of a
questionnaire
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Execution Plan – Work Progress
Phase 1
Literature review: investigation of technical publications and patents
Compilation of a list containing all potential technologies, including:
Contact and interview: consultants/experts, academia, suppliers…
(Global – Hatch’s group extensive network worldwide)
extension of existing technologies into newer applications
non-conventional comminution approaches
notable alternative technologies “under the radar screen”
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Execution Plan – Work Progress
Phase 1 – List of Technologies
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Execution Plan – Work Progress
Phase 1 – List of Technologies
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Execution Plan – Work Progress
Phase 1 – List of Technologies
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Execution Plan – Work Progress
Phase 1 – List of Technologies
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Execution Plan – Work Progress
Phase 1
Details to be included in the list:
maturity level of development
possible % reduction in energy requirement
applicable size range, e.g. from 50mm to 1mm
feasibility perception towards industrial application
inhibiting factors and possible ways to mitigate them
Develop basis for ranking all listed technologies (analysis matrix)
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Execution Plan – Work Progress
Phase 1
Develop basis for ranking all listed technologies (analysis matrix)
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Execution Plan – Current stage
Phase 1
Present findings to CIMC processing group, including:
the complete matrix with resulting ranking
detailed information on the top 5 technologies
Together with CIMC processing group select the best 2 or 3 cases for
further investigation
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Execution Plan – Work Progress
Phase 1
Ranking
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Execution Plan – Technology
High Voltage Pulse treatment - Selfrag
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Execution Plan – Technology
HPGR in close circuit with air classifiers
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Execution Plan – Technology
HPGR-Stirred Media Mill Circuit (HPGR in series)
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Execution Plan – Technology
Conjugate Anvil-Hammer Mill (CAHM)
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Execution Plan – Technology
Multishaft Mill
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Acknowledgements
CMIC Processing Group and all participants
and
Hatch
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Thank you for your attention!
Questions?
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