The Experts below are selected from a list of 1770 Experts worldwide ranked by ideXlab platform
Daniel Hodouin - One of the best experts on this subject based on the ideXlab platform.
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tuning Flotation Circuit operation as a function of metal prices
Cim Bulletin, 2000Co-Authors: Claude Bazin, Daniel HodouinAbstract:This paper examines the economic advantages of tuning the operation of a differential Cu-Zn Flotation Circuit as a function of metal prices. Three operating strategies are considered in the analysis: 1) the operation of the Circuit at planned copper and zinc concentrates grade with maximum recovery of both metals; 2) the operation of the Cu Circuit at maximum copper smelter return per ton of ore and of the Zn Circuit at a maximum zinc smelter return per ton of ore; and 3) the operation of the Circuit at maximum copper and zinc smelter return per ton of ore. The second strategy tunes the copper Circuit independently from the zinc Circuit, while the third strategy tunes both Circuits simultaneously.
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application of a dynamic material balance program to an industrial Flotation Circuit
Cim Bulletin, 1995Co-Authors: Claude Bazin, A R Trusiak, Daniel HodouinAbstract:The On-Stream Analyzer has proven, and is still proving to be, an extremely valuable tool for the control of Flotation Circuits. This paper examines the possibility of going further in the utilization of the analyzer results by using a real-time material balance program to calculate the mass flow rates within the streams of a Circuit for process control, analysis and optimization as well as for the detection of sensor malfunction. The material balance algorithm improves measurements and give good estimates of unmeasured variables during normal operating conditions. The potential and limitations of the method are illustrated using results of an application to the Line 3 Flotation Circuit of Brunswick Mining and Smelting, New Brunswick.
Pertti Lamberg - One of the best experts on this subject based on the ideXlab platform.
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Modeling and Simulation of SkimAir® Flash Flotation as a Part of Grinding-Flotation Circuit – Case Study in Esperanza, Chile
2020Co-Authors: Pertti LambergAbstract:Modeling and Simulation of SkimAir® Flash Flotation as a Part of Grinding-Flotation Circuit – Case Study in Esperanza, Chile
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development and calibration of a dynamic Flotation Circuit model
Minerals Engineering, 2016Co-Authors: Pirjo Seppälä, Haresh Kumar, Marko Paavola, Jari Ruuska, Antti Remes, Aki Sorsa, Pertti Lamberg, Kauko LeiviskäAbstract:Monitoring of mineral beneficiation processes is difficult due to lack of reliable measurements and hazardous environment. Therefore robust models describing steady-state and dynamic behaviour of t ...
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systematic diagnosis of Flotation Circuit performance based on process mineralogical methods
International Mineral Proceeding Symposium & Exhibition : 15 10 2014 - 17 10 2014, 2014Co-Authors: Pertti Lamberg, Jan RosenkranzAbstract:Operators of industrial Flotation Circuits experience every now and then situations where the processing performance of the plant is poorer than expected. Usually this leads to a continual and usel ...
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training simulator for Flotation process operators
IFAC Proceedings Volumes, 2011Co-Authors: Timo Roine, Jani Kaartinen, Pertti LambergAbstract:Abstract This paper presents a novel simulation concept for operator training in the field of mineral processing. The simulations are carried out with a dynamic process simulator HSC Sim® of HSC Chemistry® developed by Outotec Research Oy. The simulator is fitted to mimic an existing copper Flotation Circuit as accurately as possible by using metallurgical models and then integrated into a larger simulation environment, providing the operator trainees a realistic experience of the process. The simulation environment is designed to be scalable and very flexible, allowing many different usage scenarios and thus aiding in the transfer of the tacit knowledge from operator generation to the next. Concurrent work is being done on higher level analysis, utilizing the results reported in this paper.
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modeling and simulation of skimair flash Flotation as a part of grinding Flotation Circuit case study in esperanza chile
2008Co-Authors: Pertti LambergAbstract:Modeling and Simulation of SkimAir® Flash Flotation as a Part of Grinding-Flotation Circuit – Case Study in Esperanza, Chile
E M Wightman - One of the best experts on this subject based on the ideXlab platform.
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the role of a flash Flotation Circuit in an industrial refractory gold concentrator
Minerals Engineering, 2013Co-Authors: Bianca Newcombe, E M Wightman, D J BradshawAbstract:Abstract In order to determine the contribution of the flash Flotation Circuit to the overall plant performance of the Kanowna Belle concentrator, two survey campaigns both with and without the flash Circuit in operation have been conducted on two distinctly different ore types: a very high grade ore, and a very low grade ore of higher hardness. Using two different ores with the same target valuable mineral species (gold and pyrite) through the same treatment route allows any trends in performance to be more easily identified. As both survey campaigns involved running the plant with and without the flash Flotation Circuit in operation, the significant contribution of the flash Flotation cell to overall plant recovery and final concentrate grade is highlighted. The flash Circuit on this plant may be considered as the primary rougher, contributing in excess of 42% of the valuable material that is recovered to the final concentrate stream, at a grade of approximately 35% sulphur; and in-so-doing reducing the overall plant footprint that would otherwise be required to achieve the same recoveries at the target concentrate grade. Mineralogical analysis of survey samples shows that the feed to the flash Flotation cell (cyclone underflow) is of a much higher grade and contains a higher proportion of well liberated valuable material as compared to the conventional Flotation Circuit feed (cyclone overflow). Maximising the recovery of this material before it re-enters the milling Circuit should be of paramount importance to optimising overall plant performance. When the flash Flotation Circuit is taken off-line the recovery of sulphur (and hence pyrite) is observed to decrease dramatically, and whilst the recovery of gold also decreases, it is to a much lesser extent. The difference in the recoveries of gold and pyrite that is observed without the flash Flotation Circuit in operation is most likely attributable to a change in the way the gold is being liberated as a function of the change in grinding Circuit operation that is required when the flash Circuit is taken off-line. The distribution of valuable material in the cyclone overflow stream (conventional Flotation feed) undergoes a step change when the flash Circuit is taken off-line with an increase in the amount of valuable fines being generated, which is further reflected in the Flotation tails with a higher proportion of both pyrite and gold being present in the intermediate and fine size classes. This increase in the amount of pyrite fines in particular may have contributed to the loss in recovery that was observed when the flash Flotation Circuit was taken off-line. Pulp chemistry data from various points around the Flotation Circuit highlight the different processing conditions in the flash cell, compared to the conventional Circuit, which will impact on the type of minerals able to be recovered by Flotation, as well as reagent selection for this type of processing application.
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Flotation Circuit optimisation towards more sustainable practice
25th International Mineral Processing Congress 2010 (IMPC 2010), 2010Co-Authors: Sarah Evelina Elizabeth Schwarz, E M WightmanAbstract:Understanding and improving Flotation Circuit performance has grown in maturity and detail over the past five years, coinciding with the significant improvement in commodity prices. With the global financial crisis in 2008 - 2009, there has been a stronger focus on improving efficiency and reducing costs, across all processing plants. During this time, the Flotation Circuit analysis technology has continued to develop as part of the AMIRA International P9 project, among others. Changes to the technology have made the cell characterisation sensors more robust and independent of the plant facilities (air, power, etc), and changes to the methodology have reduced the time spent on site and the number of samples generated. The understanding of plant performance has greatly improved over this time as well, with the inclusion of size-by-size analysis now standard in the Flotation projects. These advancements in characterising and optimising Flotation Circuit operation have led to reductions in the time and effort required to understand fl otation Circuit performance, fewer disruptions to and more timely optimisation of Flotation Circuits resulting in minimising waste production, and identification of opportunities to enhance energy efficiency. The ongoing development of the optimisation technology will continue to provide more understanding of Flotation Circuits and provide operations with tools to identify potential areas for improvement.
Nikhil Gupta - One of the best experts on this subject based on the ideXlab platform.
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evaluation of graphite depressants in a poly metallic sulfide Flotation Circuit
International journal of mining science and technology, 2017Co-Authors: Nikhil GuptaAbstract:Abstract Synthetic dyes are commonly used for graphite depression in poly-metallic Flotation Circuits; however, these dyes can be very expensive. The aim of this study is to evaluate performance of certain low-cost alternative depressants for a complex lead-zinc (Pb-Zn) ore rich in graphite (Gr-C) on a conventional mini pilot-scale Flotation Circuit. The reagents used were commercial and industrial grade starch; agro-based waste-sugarcane bagasse and charred (burnt) bagasse powder. The primary evaluation criteria were quality (grades) of lead and zinc concentrates, their recoveries (%), and graphite rejection (%) in the tails. Benchmark tests using nigrosine as graphite depressant showed 94.3% rejection of Gr-C. The results with commercial starch were found as effective with 93.8% graphite rejection. Furthermore, bagasse powder showed potential in improving product quality (36.4% and 65.6% Pb grade and recovery) with an intermediate effectiveness in graphite rejection (85.6%). The order of effectiveness in Gr-C rejection follows nigrosine ≈ commercial starch > bagasse > industrial starch > charred bagasse. In addition, the effect these depressants on silver (byproduct) grade and recovery was also investigated.
Claude Bazin - One of the best experts on this subject based on the ideXlab platform.
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tuning Flotation Circuit operation as a function of metal prices
Cim Bulletin, 2000Co-Authors: Claude Bazin, Daniel HodouinAbstract:This paper examines the economic advantages of tuning the operation of a differential Cu-Zn Flotation Circuit as a function of metal prices. Three operating strategies are considered in the analysis: 1) the operation of the Circuit at planned copper and zinc concentrates grade with maximum recovery of both metals; 2) the operation of the Cu Circuit at maximum copper smelter return per ton of ore and of the Zn Circuit at a maximum zinc smelter return per ton of ore; and 3) the operation of the Circuit at maximum copper and zinc smelter return per ton of ore. The second strategy tunes the copper Circuit independently from the zinc Circuit, while the third strategy tunes both Circuits simultaneously.
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application of a dynamic material balance program to an industrial Flotation Circuit
Cim Bulletin, 1995Co-Authors: Claude Bazin, A R Trusiak, Daniel HodouinAbstract:The On-Stream Analyzer has proven, and is still proving to be, an extremely valuable tool for the control of Flotation Circuits. This paper examines the possibility of going further in the utilization of the analyzer results by using a real-time material balance program to calculate the mass flow rates within the streams of a Circuit for process control, analysis and optimization as well as for the detection of sensor malfunction. The material balance algorithm improves measurements and give good estimates of unmeasured variables during normal operating conditions. The potential and limitations of the method are illustrated using results of an application to the Line 3 Flotation Circuit of Brunswick Mining and Smelting, New Brunswick.
