18th IFAC Symposium on Control, Optimization and Automation in Mining, Mineral and Metal Processing Sessions

Follow this link for a detailed programme, inlcuding abstracts, keyword index and author index:


Conference delegates are encouraged to download the Flock Events app to their smartphones, and add the MMM2019 event – this app contains the conference programme and other event information. The password will be available at the registration desk at STIAS.

Plenary Session – Plenary 1 (WeP1Pl)
Wednesday, August 28, 2019, 08:30-09:30, Auditorium

Dr Osvaldo Bascur – Process Analytics: Transforming Mineral Process Plant Data Into Actionable Insight

Regular Session – Milling and Flotation 1 (WeM01)
Wednesday, August 28, 2019, 10:00-12:00, Room A

Time Title Authors
10:00-10:20 Extension, Validation, and Simulation of a Cone Crusher Model Khalid Atta, Thiago A. M. Euzébio, Haroldo Levi Ibarra Gonzalez, Vinícius Silva Moreira, Andreas Johansson*
10:20-10:40 Feed size distribution feedforward control for a grinding mill circuit Michael Gerhard Maritz, Johan Derik Le Roux, Ian Craig*
10:40-11:00 A flexible steady state comminution circuits simulator Fernando Ureta, Daniel G. Sbarbaro*
11:00-11:20 Modeling the product net value of a grinding-flotation circuit Alex Thivierge*, Jocelyn Bouchard, Andre Desbiens, Edgar-M. Pérez-G.
11:20-11:40 A Combined MPC for Milling and Flotation – A Simulation Study Kevin Seth Brooks*, Merinda Westcott, Margret Bauer

Regular Session – High Temperature Processing 1 – WeM02
Wednesday, August 28, 2019, 10:00-12:00, Room B

Time Title Authors
10:00-10:20 Model of an Electric Arc Furnace Oxy-Fuel Burner for dynamic simulations and optimisation purposes Jesus Hernandez*, Luca Onofri, Sebastian Engell
10:20-10:40 Analysis of Electrochemical Noise for Corrosion Type Identification by Use of Global Recurrence Plots and Texture Analysis Tze Lin Kok, Chris Aldrich*
10:40-11:00 Slip Model Adaptation Based on Measurements of the Strip Velocity Ulrich Knechtelsdorfer*, Martin Mueller, Andreas Steinboeck, Andreas Kugi
11:00-11:20 Material level detection of blast furnace based on the fusion of membership degree classification and sliding window Model Zhipeng Chen, Zhao-Hui Jiang*, ChunJie Yang, Weihua Gui, Youxian Sun

Plenary Session – Plenary 2 (WeP2Pl)
Wednesday, August 28, 2019, 13:00-14:00, Auditorium

Professor Jan Cillers – Flotation optimisation using Peak Air Recovery: Past, present and future

Regular Session – Milling and Flotation 2 – WeA01
Wednesday, August 28, 2019, 14:30-16:10, Room A

Time Title Authors
14:30-14:50 State Controllability of a Froth Flotation Cell Le Roux, Johan Derik (University of Pretoria); Craig, Ian (University of Pretoria)
14:50-15:10 Predicting optimal operating points by modelling different flotation mechanisms Daniël Jacobus Oosthuizen, Ian Craig*
15:10-15:30 A dynamic model of fluidized-bed flotation David Georges-Filteau*, Jocelyn Bouchard, Andre Desbiens
15:30-15:50 Data-driven Extraction Method of Belief Rule for Reagent Addition in Antimony Rougher Flotation Xiaoli Wang*, Xingxiao Lv, Chunhua Yang
15:50-16:10 Dynamic physics-based flotation models for effective predictive control Paulina Quintanilla*, Stephen Neethling, Pablo Rafael Brito-Parada

Regular Session – High Temperature Processing 2 – WeA02
Wednesday, August 28, 2019, 14:30-16:10, Room B

Time Title Authors
14:30-14:50 Modelling of Inner Surface Temperature Field of Blast Furnace Wall Based on Inverse Heat Conduction Problems Shen, Ling (Central South University); Jiang, Zhao-Hui (Central South University); Gui, Weihua (Central South Univ); Yang, Chunhua (Central South University); Wang, Yalin (Central South University); Sun, Bei (Central South University) 76355
14:50-15:10 Temperature stabilisation at the Lonmin Smelter Hot Gas Generator and Flash Dryer unit operations Marnus Olivier*, Percy French
15:10-15:30 Control of Jet Flow Angle in Continuous Casting Process using an Electromagnetic Brake Shereen Abouelazayem*, Ivan Glavinic, Thomas Wondrak, Jaroslav Hlava
15:30-15:50 Implementation of full-stand looperless rolling in a hot strip finishing mill Hiroyuki Takagi*

Plenary Session – Plenary 3 – ThP1Pl
Thursday, August 29, 2019, 08:30-09:30, Auditorium

Dr Kathryn Hadler – Flotation Flowsheet Design and Optimisation

Regular Session – Artificial Intelligence and Machine Learning 1 – ThM01
Thursday, August 29, 2019, 10:00-12:00, Room A

Time Title Authors
10:00-10:20 Automatic near-infrared hyperspectral image analysis of copper concentrates Pablo Coelho, Sergio Torres, Daniel G. Sbarbaro*
10:20-10:40 Quantitative Ore Texture Analysis with Convolutional Neural Networks Yihao Fu, Chris Aldrich*
10:40-11:00 Deep Convolutional Neural Network for Mill Feed Size Characterization Olivier, Laurentz Eugene (Sasol / University of Pretoria); Maritz, Michael Gerhard (University of Pretoria); Craig, Ian (University of Pretoria)
11:00-11:20 Reinforcement Learning and Deep Neural Networks for PI Controller Tuning William John Shipman*, Lodewicus Charl Coetzee
11:20-11:40 Mine worker threshold shift estimation via optimization algorithms for deep recurrent neural networks Milka Cynthia Ijunga Madahana*, John Elisa Dimiti Ekoru, Thabang Mashinini, Otis Tichatonga Nyandoro

Regular Session – Control and Optimisation 1 – ThM02
Thursday, August 29, 2019, 10:00-12:00, Room B

Time Title Authors
10:00-10:20 Simulation Analysis of a Mineral Liberation Estimator for Control Purposes Edgar-Manuel Pérez-Garcia*, Jocelyn Bouchard, Eric Poulin
10:20-10:40 Limitations on control performance in the Czochralski crystal growth process using bright ring measurement as a controlled variable Halima Zahra Bukhari*, Morten Hovd, Jan Winkler
10:40-11:00 Statistical modelling of an ammonium nitrate fluidised bed granulator for inference measurement Rudolph Kok, Frederik van der Merwe, George van Schoor, Kenneth Richard Uren*
11:00-11:20 Passive Fault Tolerant Control System for Two-Tank Interacting Conical Level Control System Against Partial Actuator Failures Himanshukumar Patel*, Vipul Shah
11:20-11:40 Averaging Level Control of Bulk Solid Material using a Tripper Car Thiago A. M. Euzébio*, Ênio Lopes, Júnior, Luciano Perdigao Cota
11:40-12:00 Tailings line Pressure and Flow regulation using Gain Scheduling and a Multiple Output Control System Bryan Maas*, Ali Mutelo

Plenary Session – Plenary 4 (ThP2Pl)
Thursday, August 29, 2019, 13:00-14:00, Auditorium

Professor Chris Aldrich Recent Advances in Multivariate Image Analysis in the Mineral Processing Industries

Regular Session – Fault Detection and Monitoring 1 – ThA01

Thursday, August 29, 2019, 14:30-16:10, Room A

Time Title Authors
14:30-14:50 A Condition Monitoring Methodology Based on a Non-Parametric System Identification Approach Kirill Chernyshov*
14:50-15:10 An energy-attributed graph approach for the purposes of FDI in a heated two-tank system Kenneth Richard Uren*, George van Schoor, Lidia Auret
15:10-15:30 Vision-Based Inspection and Segmentation of Trimmed Steel Edges Zeiler, Alexander (TU Wien); Steinboeck, Andreas (Vienna University of Technology); Vincze, Markus (TU Vienna); Jochum, Martin (AG der Dillinger Hüttenwerke); Kugi, Andreas (Vienna University of Technology)
15:30-15:50 A New Data-Driven Method for Nonlinear Process Monitoring Zhiwen Chen*, Chang Liu, Tao Peng, Chunhua YANG, Weihua Gui

Regular Session – Transportation – ThA02
Thursday, August 29, 2019, 14:30-16:10, Room B

Time Title Authors
14:30-14:50 Smart automated noise policy monitoring and feedback control system for mining application Milka Cynthia Ijunga Madahana*, John Elisa Dimiti Ekoru, Otis Tichatonga Nyandoro
14:50-15:10 Dynamic Friction Loss Estimation for a Linear DC Machine Powered Mining Locomotive Mohlalakoma Therecia Ngwako*, Otis Tichatonga Nyandoro, John van Coller
15:10-15:30 Conditions for Complete Feedback Linearisation on Active Suspension Systems for Mining Trucks Lihle Immaculate Nkomo*, Otis Tichatonga Nyandoro
15:30-15:50 Modelling and Control of an Autonomous Linear DC Machine based Mine Locomotive Mohlalakoma Therecia Ngwako*,Otis Tichatonga Nyandoro,John van Coller,Milka Cynthia Ijunga Madahana
15:50-16:10 A Condition for Singular Optimal Control Formulation for a Tandem Pair of Gravity Fed Linear DC Machine Powered Mine Locomotives Mohlalakoma Therecia Ngwako*, Otis Tichatonga Nyandoro, John van Coller, Milka Cynthia Ijunga Madahana
15:50-16:10 Development of Ore Carrier Scheduling Algorithm Kazuhiro Nakatsuji, Osamu Yamaguchi*

Plenary Session – Plenary 5 (FrP1Pl)
Friday, August 30, 2019, 08:30-09:30, Auditorium

Prof Andreas Kugi – Advanced Process Control in the Steel Industry

Automation and Control Institute (ACIN), Vienna University of Technology
Christian Doppler Laboratory for Model-Based Process Control in the Steel Industry
Center for Vision, Automation & Control, Austrian Institute of Technology (AIT)

In the last decades, the steel industry has been confronted with an increased competition demanding for new products, more diversified product portfolios, tighter quality tolerances, minimized production costs, increased energy efficiency, as well as reduced waste and environmental impact. Advanced process control and automation are powerful drivers of innovation to improve the production capabilities, the sustainability, the flexibility, and the efficiency of all involved production processes. The available computing power and data storage capacities in combination with the possibilities of real-time communication and new sensor technologies open up completely new ways to control the plants and to manage the product and energy flows in an optimal way. In modern process automation, the smart combination of traditional first-principles mathematical models with data-driven approaches exploiting the potential of machine learning methods plays an important role, in particular in the steel industry because many processes feature challenging properties like nonlinearities, MIMO coupling, different time scales, transport delays, strong parameter variations, scarcity of measurements, and rough environmental conditions. Typically, such models are not available off the shelf but have to be developed and tailored to the specific problem at hand. In this talk, we will present some selected examples from heavy-plate rolling at Dillinger, Germany, and from hot strip rolling and strip processing at voestalpine, Austria, with a special focus on the interplay between the theoretical concepts and their practical implementation at the industrial plants.

Andreas Kugi is head of the Automation and Control Institute (ACIN) and full professor for complex dynamical systems at TU Wien, Austria. His main research interests include the modeling, control and optimization of complex dynamical systems, the mechatronic system design, as well as robotics and advanced process control. He has been collaborating with more than 40 national and international companies. Andreas Kugi has published more than 250 scientific papers in SCI- and SCIE-journals and full peer-reviewed conferences. Moreover, he is inventor or co-inventor of 98 patents and he has supervised more than 35 successfully completed PhD dissertations. Since 2014, Andreas Kugi has been heading the Christian Doppler Laboratory for Model-Based Process Control in the Steel Industry and since 2017 he is also the Head of the Center for Vision, Automation & Control at the Austrian Institute of Technology (AIT). Apart from many other activities, Andreas Kugi was the Editor-in-Chief of the IFAC journal Control Engineering Practice from 2010-2017, he is the Chair of the IFAC TC 6.2. Mining, Mineral and Metal Processing, and Vice President of the Austrian Electrotechnical Association (OVE). He is a full member of the Austrian Academy of Sciences and member of the German National Academy of Science and Engineering (acatech).

Special Session: Women in Mining and Automation
Friday, August 30, 2019, 10:00-12:00, Room A

Time Speaker / Topic Short biography of speaker
10h00 to 10h10 Introduction by Lidia Auret Lidia Auret is the data science and process manager at Stone Three Digital and an extraordinary associate professor at the Department of Process Engineering at Stellenbosch University. Lidia’s research interests include data analytics and machine learning methods applied to the challenge of process monitoring in industrial processes.
10h10 to 10h30 Merinda Westcott Merinda Westcott is currently the APC Lead at BluESP. She has been involved in the implementation of Advanced Process Control solutions in the Minerals Processing industry for the past 10 years as a project manager and technical consultant at operations in Africa, Australia and South America. She also held various positions at Impala Platinum’s Rustenburg operations including Project Manager, Process Control Engineer and Technical Metallurgist. Merinda graduated from the University of Pretoria with a BEng degree in Chemical Engineering.
10h30 to 10h50 Dineo Masokoane Dineo Masokoane is a Technical Portfolio Manager at the Technology Innovation Agency. Her qualifications include national diplomas in Electrical Engineering and a BBA. She has 25 years working experience covering diamond mining processes, plant commissioning and maintenance, SAP system development, digital systems programming and implementation, knowledge based troubleshooting system development, x-ray diamond recovery machine development and testing,  component level testing, Project Management, Project Coordination, Investment Case Specialist as well as Portfolio Management of technologies funded through public funds.
10h50 to 11h10 Margreth Tadie Dr Margreth Tadie is a Chemical Engineer at Stellenbosch University. Her research focusses on process enhancement of metallurgical processes and valorisation of mining waste through a fundamental understanding of mineral and metal surface properties and reactions. She is a member of the Future Leaders – African Independent Researchers, FLAIR, Fellows who are a part of the Royal Society (UK) and the African Academy of Sciences (AAS).
11h10 to 11h30 Megan Becker Professor Megan Becker is based in the Centre for Minerals Research in the Department of Chemical Engineering at the University of Cape Town. Her research focuses on the application of mineralogical knowledge for the understanding, optimisation and prediction of key unit processes within the mining industry from both techno-economic and environmental aspects. In 2018, she was nominated as one of the top 100 Global Inspirational Woman in Mining.
11h30 to 11h50 Karin Wolff Dr Karin Wolff is project leader of the STADIO Multiversity engineering faculty, and senior education advisor to Stellenbosch University engineering. Her post-graduate research looked at engineering problem solving across an extensive industry network. This access to graduates across engineering sectors has enabled insights into current practices, which are being used to improve engineering education.
11h50 to 12h00 Closing remarks by Lidia Auret

Regular Session – Control and Optimisation 2 – FrM02
Friday, August 30, 2019, 10:00-12:00, Room B

Time Title Authors
10:00-10:20 Dynamic Modelling, Simulation, and Control of a Tailings Treatment Surge Tank Ian Craig*, John James Burchell
10:20-10:40 From Simulation to Implementation: Model Predictive Control on a Package Boiler Jason John Miskin*, Richard Carl Fisher, Philip du Toit
10:40-11:00 The Development of an Electrowinning Model to Predict Process Performance Mandy Tucker*, Margreth Tadie, Christie Dorfling
11:00-11:20 An Optimization Approach for Shovel Allocation to Minimize Fuel Consumption in Open-pit Mines: Case of Heterogeneous Fleet of Shovels. Danny Mpyana Bajany*, Lijun Zhang, Xiaohua Xia

Regular Session – Fault Detection and Monitoring 2 – FrA01
Friday, August 30, 2019, 13:00-14:40, Room A

Time Title Authors
13:00-13:20 Computational cost of an exergy-based fault detection scheme implemented in a commercial process simulator Henri-Jean Marais*, George van Schoor, Kenneth Richard Uren
13:20-13:40 Process Monitoring and Fault Detection using Empirical Mode Decomposition and Singular Spectrum Analysis Syamala Krishnannair*, Chris Aldrich
13:40-14:00 Flotation Process Fault Diagnosis Via Structural Analysis Carlos Gustavo Perez Zuñiga*, Javier Sotomayor-Moriano, Elodie Chanthery, Louise Travé-Massuyès, Mario Soto Angles
14:00-14:30 New Concept of Safeprocess Based on a Fault Detection Methodology: Super Alarms Vasquez, John William (Universidad de Investigación y Desarrollo); Perez Zuñiga, Carlos Gustavo (Pontificia Universidad Católica del Perú); Sotomayor-Moriano, Javier (Pontificia Universidad Católica del Perú); Muñoz, Yecid (Universidad Autónoma de Bucaramanga – UNAB); Ospino, Adalberto (Universidad de la Costa – CUC)

Regular Session – Artificial Intelligence and Machine Learning 2 – FrA02
Friday, August 30, 2019, 13:00-14:40, Room B

Time Title Authors
13:00-13:20 Nonlinear Time Series Analysis of Avalanching Granular Flow Data Chris Aldrich*, Jacques Olivier
13:20-13:40 Controller Maintenance Prioritisation with LoopRank for a Milling and Flotation Plant John Themba McCoy*, Lidia Auret
13:40-14:00 Noise level policy advising system for mine workers Milka Cynthia Ijunga Madahana*, John Elisa Dimiti Ekoru, Thabang Mashinini, Otis Tichatonga Nyandoro

Social Program

Welcome Reception: 27 August 2019 (18:00)

Participants and their registered accompanying persons are invited to attend a Welcome Reception at STIAS for a wine tasting with the Award winning Deetlefs Wine and opening speeches.

Deetlefs awards:
1966 – The farm won the trophy for “The Best Specialized Farming Practices”.
2012 – Pinotage vineyard block – winner of the Winetech / Vinpro vineyard block competition
2015 – Chenin Blanc vineyard block – winner of the Vinpro vineyard block competition
1976 – For the first time ever in the South African industry, a fortified Hanepoot wine won the Champion Young Wine Competition and Philip Deetlefs was nominated Winemaker of the Year
1979 – The Hanepoot received Superieur seal (only 4% of all wines)
2006 – Deetlefs was awarded the CEO Trophy for the top Winery in South Arica for 2006 / 2007 by the South African Airways
2007 – Deetlefs is the sole wine supplier on all business class and international flights for Nationwide Airlines
2011 – Deetlefs sole wine supplier on the launch flight of the Lufthansa A380 “Johannesburg” in South Africa
2015 – Breedekloof/Worcester Winemaker of the year
2016 – Deetlefs Chenin Blanc 2015 receives the “Best South African wine of the Year” at the China Wine & Spirits awards
2017 – Deetlefs was awarded the Sémillon category winner at the Old Mutual Trophy Wine Show for our Deetlefs Familie Sémillon 2014

Conference Banquet: 29 August 2019 (19:00)

Participants and their registered accompanying persons are invited to attend the banquet dinner at Die Volkskombuis.

We will have some local entertainment as well, so make sure you bring your dancing shoes.

In 1902 Sir Herbert Baker designed labourers’ cottages which were constructed on the old farm formerly known as Vredenburg. In 1968 the property was acquired by Historical Homes of South Africa , restored and leased as a restaurant . More recently, the building stood vacant and somewhat derelict for several years . During 2017 the Rupert family initiated a full restoration and today De Volkskombuis operates once again as a restaurant within the picturesque town of Stellenbosch.

Dress code: Smart.

Closing, awards and final lunch: 30 August (14:30)

Participants are invited to a final lunch and prize giving at STIAS on Friday after the last session for the day, where they can unwind and enjoy a drink or two with their colleagues, speakers and engage in some networking.

Please download the Flock App from your play store to access papers. Password will be given to delegates at the conference and will be published on IFAC Papers Online post the conference.