Email: derek.barratt@sagmilling.com
Derek Barratt P.Eng, principal of DJB Consultants Inc, is a respected expert comminution consultant with worldwide experience on crushing and grinding projects.
2006 Art MacPherson Comminution Award. The Art MacPherson Award is given for "significant contributions to the advancement of Comminution." Award was presented at the SAG 2006 conference in Vancouver, BC.
2003 INCO Medal for lifetime achievement in the field of mineral comminution awarded by the Canadian Institute of Mining, Metallurgy, and Petroleum at the CIM Annual Meeting in Montréal, PQ.
Minera Los Pelambres - Chile
Assessment of SAG mill/ball mill/pebble crushing circuit operation at a large copper mine. Reviewed mill liner replacement strategies and avenues for mill expansion.
Pebble - Alaska
Mill and circuit conceptual design for the next-in-class largest SABC circuit based on the largest equipment that can be built rather than the largest equipment that has currently been built.
Raglan Mine - Canada
Assessment of a SAG mill/ball mill/pebble crushing circuit option for the existing autogenous grinding plant.
Cristalino Project - Brazil
Review of SAG mill/ball mill/pebble crushing and flotation circuits as part of a pre-feasibility study. (Sub-contract to Fluor Corporation - Minerconsult Engenharia).
Nezhdaninskoye Gold Mine
Report on the Nezhdaninskoye gold mine, Republic of Sakha (Yakutia), to assist project evaluation.
The SME Mineral Processing Plant Design, Practice, and Control conference held in Vancouver at the end of October is complete. Many thanks to the organizers, session chairmen, authors, and delegates for making the conference an outstanding success.
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Esquel Gold-Silver Project - Southern Argentina
Review and analysis of geological and geotechnical data, recommendations for compositing samples for comminution testing, evaluation of test results, and sizing grinding equipment.
Williams Operating Company - Hemlo, Ontario, Canada
Review and analysis of SAG mill shell liner designs and their predicted effect on power draw, leading to a beneficial change in liner selection.
Lac des Iles - Ontario, Canada
SAG mill circuit review and analysis of primary crushing and grinding operations with recommendations for improving mill throughput.
Los Pelambres - Chile
Ongoing optimisation and expansion studies for a 110,000 t/d copper-molybdenum plant.
Collahuasi - Chile
Review of plant operating data, grinding testwork, projection of grinding and regrinding equipment requirements, and review of equipment bids for an expansion.
Batu Hijau - Indonesia
Post-commissioning plant studies and implementation of computer-based methodology for predicting SAG mill feed rates from bench scale testwork results.
Effect of Sample Dimensions on Comminution Testwork Co-Author: A. Doll
Co-Editor: SME Mineral Processing Plant Design, Practice, and Control Proceedings
Sampling a Mineral Deposit for Metallurgical Testing and the Design of Comminution and Mineral Separation Processes Co-Author: J. Hanks SME Mineral Processing Plant Design... Proceedings
Factors Which Influence the Selection of Comminution Circuits Co-Author: M. Sherman SME Mineral Processing Plant Design... Proceedings
Selection and Sizing of Autogenous and Semi-Autogenous Mills Co-Author: M. Sherman SME Mineral Processing Plant Design... Proceedings
Chairman and Co-Editor: SAG Conference 2001 The definitive conference for practitioners of comminution, the SAG conferences are held every 4-5 years in Vancouver Canada.
Derek J Barratt, P.Eng Telephone: +1·604·608·6195 Email: derek.barratt@sagmilling.comContact Information
Suite 1400, 355 Burrard St.
Vancouver, BC V6C 2G8
Canada
Alternate Phone: +1·604·985·7617
Fax: +1·604·608·6163
Alt Fax: +1·604·985·9647
http://www.sagmilling.com/djbconsultants/