Publications

Conference Papers

  1. Lotter, N.O., and Napier-Munn, T.J., 2018. The Value of Incremental Performance Improvement in Concentrators – How to Secure and Quantify Small Gains, proc. Extraction 18, Ottawa, pp. 2847-2855.
  2. Lotter, N.O., and Bradshaw, D.J., 2018.  The Formulation and use of Mixed Collectors in Sulphide Flotation – Valuable Performance Gains, proc. Extraction 18, Ottawa, pp. 2889-2900.
  3. Lotter, N.O., 2018. Best Practice Process Mineralogy Serving Greenfield and Brownfield Design, proc. SME – MPD, Colorado Springs, April 2018.
  4. Lotter, N.O., 2018.  The Development of Modern Flowsheeting Tools for Mineral Processing – Integrated Process Mineralogy: Decades in the Making, proc. Canadian Mineral Processors, Ottawa, January 2018.
  5. Lotter, N.O., and Evans, C.L., 2017.  Sampling – a Key Tool in Modern Process Mineralogy, proc. MEI Process Mineralogy, Cape Town, March 2017.
  6. Lotter, N.O., Baum, W., Reeves, S., Arrue, C., and Bradshaw, D.J., 2017.  The Business Value of Best Practice Process Mineralogy, proc. MEI Process Mineralogy, Cape Town, March 2017.
  7. Lotter, N.O., Bradshaw, D.J., and Barnes, A.R., 2015. Flotation of the Major Copper Sulphides – an Electrochemical Perspective, proc. MEI Flotation ’15, Cape Town, Nov 2015 (preprint).
  8. Lotter, N.O., Whiteman, E., and Bradshaw, D.J., 2013, Modern Practice of Laboratory Flotation Testing for Flowsheet Development, proc. Flotation ’13, MEI, Cape Town, November 2013.
  9. Lotter, N.O., Oliveira, J.F., Hannaford, A.L., Amos, S.R., and Broughton, D., 2013, Flowsheet Development for the Hypogene Geomet Unit in the Ivanplats Kamoa Copper Project, proc. Canadian Mineral Processors, Ottawa, January 2013, pp. 71-85.
  10. Lotter, N.O., Oliveira, J.F., and Hannaford, A.L., 2012. The Influence of Quantitative Mineralogy on Flowsheet Development at the Ivanplats Limited Kamoa Project, proc. MEI “Process Mineralogy ‘12”, Cape Town, November 2012.
  11. Lotter, N.O., Monnapula, R., Oliveira, J., Fragomeni, D., and Bradshaw, D.J., 2011, Formulation and Plant Trial of a Mixed Collector for Eland Platinum, proc. Canadian Mineral Processors, Ottawa, January 2011, Paper No. 10, pp. 161-183.
  12. Lotter, N.O., Modern Flowsheeting Technology with Process Mineralogy, CIM Distinguished Lecture, proc. Canadian Mineral Processors, Ottawa, January 2011.
  13. Lotter, N.O., Oliveira, J., Monnapula, R., and Bradshaw, D.J., The Role of Mineralogy in the Formulation and Use of Mixed Collectors in Sulphide Flotation: Eland Platinum, proc. Process Mineralogy ’10, MEI, Cape Town, November 2010.
  14. Lotter, N.O., Modern Process Mineralogy: an Integrated Multi-Disciplined Approach to Flowsheeting, Invited Keynote Lecture, MEI Process Mineralogy ’10, Cape Town, November 2010.
  15. Lotter, N.O., Kormos, L.J., Oliveira, J., and Whiteman, E., 2010, Modern Process Mineralogy – Two Case Studies, proc. MEI “Nickel ‘10”, Falmouth, Cornwall, U.K., June 2010.
  16. Lotter, N.O., Stratified Sampling of Drill-Core, proc. Canadian Mineral Processors, Ottawa, January 2010, Paper No. 11, pp. 163-179.
  17. Deng, T., Yu, S., Lotter, N.O., and Di Feo, D., 2010, Laboratory Testwork of Mixed Xanthates for Raglan Ore, proc. Canadian Mineral Processors, Ottawa, January 2010, Paper No. 16, pp. 253-268.
  18. Lotter, N.O., and Bradshaw, D.J., 2009, The Formulation and Use of Mixed Collectors in Sulfide Flotation, proc. MEI Conference “Flotation ‘09”, Cape Town, November 2009.
  19. Lotter, N.O., and Fragomeni, D., 2009, High-Confidence Flotation Testing at Xstrata Process Support, SME Annual Meeting and Exhibit, Denver, February 2009, Preprint 09-026.
  20. Lotter, N.O., Comeau, G., Kormos, L.J., Fragomeni, D., and Di Feo, A., 2009, Plant Scale Trial of Isobutyl Xanthate at Raglan Concentrator Using Reference Distributions, Proc. Canadian Mineral Processors, Ottawa, January 2009, Paper No. 6, pp. 79-105.
  21. Lotter, N.O., Bradshaw, D.J., Kormos, L.J., Becker, M., and Parolis, L.A., 2007, A Discussion Of The Occurrence And Undesirable Flotation Behaviour Of Orthopyroxene And Talc In The Processing Of Mafic Deposits, Proc. Flotation 07, MEI, Cape Town, November 2007.
  22. Lotter, N.O., and Laplante, A.R., 2006, The Campaign Survey Model – a Case Study at Raglan Mine, Québec, Proc. MEI Conference on Quantitative Mineralogy, Brisbane, July 2006.
  23. Lotter, N.O., and Laplante, A.R., 2005, Statistical Benchmark Surveying of Production Concentrators, Minerals Engineering Conference: Processing of Nickel Ores and Concentrates, Cape Town, November 2005.
  24. Lotter, N.O., and Laplante, A.R., 2005, Residual Effects of Lognormality in Concentrator Data, Paper No. 20, Canadian Mineral Processors’ Conference, Ottawa, January 2005.
  25. Baum, W., Lotter, N.O., and Whittaker, P.J., 2004, Process Mineralogy – a New Generation of Ore Characterization and Plant Optimization, SME Annual Meeting and Exhibit, Denver, Preprint, February 2004.
  26. Lotter, N.O., Kowal, D.L., Tuzun, M.A., Whittaker, P.J., and Kormos, L., 2003, Sampling and Flotation Testing of Sudbury Basin Drill Core for Process Mineralogy Modelling, SME Preprint 03-023, Cincinnati, Ohio, February 2003.
  27. Lotter, N.O., Whittaker, P.J., Kormos, L., Stickling, J.S., and Wilkie, G.J., 2002, The Development of Process Mineralogy at Falconbridge Limited, and Application to the Raglan Mill, Canadian Mineral Processors’ Conference, Ottawa, Paper No. 1, January 2002.
  28. Lotter, N.O., O’Connor, C.T., and Clark, I., 2000, The Evaluation Bias Errors of the Platinum-Group Elements (PGE) Associated with Gravimetric Fire-Assaying Practice in Rustenburg Section of the Bushveld Complex, South Africa, SME Annual Meeting and Exhibit, February 2000.
  29. Lotter N.O., 1995, A Quality Control Model for the Development of High-Confidence Flotation Test Data, SME Annual Meeting and Exhibit, Preprint 95-40, February 1995.
  30. Lotter N.O., and Munro H.C., 1994, The Development of High-Confidence Flotation Test Data at Rustenburg Platinum Mines Limited, J. Mine Met. Mgrs. Assoc., 1/94, pp. 29-50, October 1994.

Refereed Journal Papers

  1.  Lotter, N.O., Baum, W., Reeves, S., Arrue, C., and Bradshaw, D.J., 2018.  The Business Value of Best Practice Process Mineralogy, Minerals Engineering, 116, (2018), pp. 226-238.
  2. Lotter, N.O., Evans, C.L., and Engstrom, K., 2018.  Sampling – a Key Tool in Process Mineralogy, Minerals Engineering, 116, (2018), pp. 196-202.
  3. Lotter, N.O., Bradshaw, D.J., and Barnes, A.R., 2016.  Classification of the Major Copper Sulphides into Semiconductor Types, and Associated Flotation Characteristics, Minerals Engineering,96-97, (2016), pp. 177-184.
  4. Lotter, N.O., Whiteman, E., and Bradshaw, D.J., 2014. Modern Practice of Laboratory Flotation Testing for Flowsheet Development, Minerals Engineering, 66-68, (2014), pp. 2-12.
  5. Lotter, N.O., Oliveira, J.F., Hannaford, A.L., and Amos, S.R., 2013, Flowsheet Development for the Kamoa Project – a Case Study, Minerals Engineering (in press), 2013.
  6. Lotter, N.O., 2011, Modern Process Mineralogy – an Integrated Multi-Disciplined Approach to Flowsheeting, Minerals Engineering, 24, (2011), pp. 1229-1237.
  7. Lotter, N.O., Kormos, L.J., Oliveira, J., Fragomeni, D., and Whiteman, E., 2011, Modern Process Mineralogy – Two Case Studies, Minerals Engineering, 24, (2011), pp. 638-650.
  8. Lotter, N.O., and Bradshaw, D.J., 2010, The Formulation and Use of Mixed Collectors for Sulphide Flotation, Minerals Engineering, 23, (2010), pp. 945-951.
  9. Lotter, N.O., Comeau, G., Kormos, L.J., Fragomeni, D., and Di Feo, A., 2010, Plant Scale Trial of Isobutyl Xanthate at Raglan Concentrator Using Reference Distributions, Minerals Engineering, 23, (2010), pp. 567-577.
  10. Lotter, N.O., and Fragomeni, D., 2010, High-Confidence Flotation Testing at Xstrata Process Support, SME, Minerals and Metallurgical Processing Journal, February 2010, Paper MMP-09-011, 27, 1, pp. 47-54.
  11. Lotter, N.O., Bradshaw, D.J., Kormos, L.J., Becker, M., and Parolis, L.A.S., 2008, A Discussion on the Occurrence and Undesirable Flotation Behaviour of Orthopyroxene and Talc in the Processing of Ultramafic Deposits, Minerals Engineering, Special Edition, Flotation 07, 21, (2008), pp. 905-912.
  12. Lotter, N.O., 2007, Distribution Modelling of Nickel Assay Grades in Final Tailings at Raglan, Québec, Minerals Engineering, 20, (2007), pp. 1067-1074.
  13. Lotter, N.O., and Laplante, A.R., 2007, The Campaign Survey Model: a Case Study at the Raglan Mine, Québec, Minerals Engineering, 20, (2007), pp. 480-486.
  14. Lotter, N.O., and Laplante, A.R., 2007, Statistical Benchmark Surveying of Production Concentrators, Minerals Engineering, 20, (2007), pp. 793-801.
  15. Lotter, N.O., Kowal, D.L., Tuzun, M.A., Whittaker, P.J., and Kormos, L.J., 2003, Sampling and Flotation Testing of Sudbury Basin Drill Core for Process Mineralogy Modelling, Minerals Engineering, 16, (2003), pp. 857-864.
  16. Lotter, N.O., Whittaker, P.J., Kormos, L., Stickling, J.S., and Wilkie, G.J., 2002, The Development of Process Mineralogy at Falconbridge Limited, and Application to the Raglan Mill, CIM Bulletin, vol. 95, no. 1066, pp. 85-92, November/December 2002.
  17. Lotter N.O., 1995, Review of Evaluation Models for the Representative Sampling of Ore, J S Afr. Inst. Min.  Metall.,  95, (4), pp. 149-155, 1995.