Camalan & Önal Published in Mining, Metallurgy & Exploration October 2020 ABSTRACT Mineral liberation is one of the primary objectives in comminution circuits for the downstream separation of valuable minerals. Breaking minerals through their grain boundaries (grain-boundary breakage) ena...

09-May-2022

Evangelista, Moreira, Moura, Souza, Resende, Lisboa, Corsini, Ribeiro, Valery, Valle, Hayashida, Plasencia Presented at Procemin-GEOMET 2021 ABSTRACT Hatch and Enaex conducted a joint Mine-to-Mill optimization project at Lundin Mining’s Chapada operation in Brazil. The main objective was to maxim...

29-Nov-2021

Valery, Valle, Roberto, Duffy, Holtham, Tabosa, Plasencia Presented at Procemin-GEOMET 2020 ABSTRACT At a time when the industry is faced with declining head grades, increasing operating costs, and problems associated with water and energy supply, pre-concentration offers hope. Pre-concentration...

22-Nov-2021

Reposted with permission from this original source - International Mining Magazine https://www.linkedin.com/posts/international-mining_im-october-2021-flotation-ugcPost-6851501159165779969-8wuy/ Our annual article covers everything from new cell designs & innovations for coarse & fines flo...

02-Nov-2021

Regino, Wong, Lopez, Adams, Hobert, Wasmund ABSTRACT The use of fluidized beds to enhance the flotation efficiency of coarse particles has been practised industrially using Eriez’ HydroFloat® separator in phosphate and potash for many years and has recently been successfully extended to sulfide m...

12-Oct-2021

Jaques, Vollert, Akerstrom, Seaman Presented at the AusIMM Mill Operators Conference June 2021 ABSTRACT In August 2018 the first full-scale pneumatically assisted fluidised bed flotation cells for the recovery of coarse composited gold and copper were commissioned at Newcrest’s Cadia Valley opera...

27-Jul-2021

Bonfils, Valery, Jankovic, Duffy, Tabosa, Holtham Presented at the AusIMM Mill Operators Conference June 2021 ABSTRACT The benefits of Mine-to-Mill optimisation have been understood by the industry for many years. If well executed, with a structured methodology, the overall operation throughput (...

20-Jul-2021

Wraith, Resta, Welmans Presented at the AusIMM Mill Operators Conference, Brisbane Australia June 23 - 25 2021 ABSTRACT Bluestone Mines Tasmania JV, Tasmania Tin Operations recognised value in mining at or near to 1Mt/a. However, the Renison Tin concentrator is restricted at 750kt/a. The solution...

20-Jul-2021

Radford, Lovatt, Putland, Becker Presented at the AusIMM Mill Operators Conference June 2021 ABSTRACT The Gruyere Gold Project was discovered by Gold Road Resources Limited in October 2013 on the Yamarna Belt 200km east of Laverton in Western Australia. The Feasibility Study for Gruyere, which wa...

20-Jul-2021

Edmunds, Wilkens, Akerstrom, Haines Presented at the AusIMM Mill Operators Conference June 2021 ABSTRACT The Ridgeway Concentrator at Newcrest Cadia was commissioned in 2002 as an ABC circuit to treat the ore from the Ridgeway sublevel cave (SLC) at around 5MTPA. Consisting of a single pinion 32’...

20-Jul-2021

Yahyaei, Ye, Hilden, Ruiz, Gavelan Presented at the AusIMM Mill Operators Conference June 2021 ABSTRACT Stockpiles and bins are an integral part of every mineral processing plant, and their design and operation play a significant role in plant performance. Size segregation, which is a common phen...

20-Jul-2021

Powell, Yahyaei, Mainza, Tavares Presented at the AusIMM Mill Operators Conference Brisbane, Australia 23 - 25 June 2021 ABSTRACT Maintaining the work balance between the primary SAG mill and secondary ball mill(s) is an overlooked bottleneck, and thus opportunity, in an increasing number of circ...

20-Jul-2021

Paz, Ypelaan, Ryan, McInnes Presented at the AusIMM Mill Operators Conference June 2021 ABSTRACT The Anglo Gold Ashanti (AGA) Sunrise Dam Gold Recovery Enhancement Project (REP) was an upgrade project to the existing process plant to increase gold recovery. The project required the existing scree...

20-Jul-2021

Palaniandy, Carr, Johns, Williams Presented at the AusIMM Mill Operators Conference June 2021 ABSTRACT Haile Gold Mine is an open pitgold mine located in the state of South Carolina, USA. The concentrator consists of a semi-autogenous mill–ball mill–pebble crusher (SABC) circuit, flash flotation,...

20-Jul-2021

Oblokulov, Green, Van Der Spuy, Becker Presented at the AusIMM Mill Operators Conference June 2021 ABSTRACT One of the blessings associated with operating a modern metallurgical facility is the multitude of technologies, techniques and processes available to improve and optimise circuits. Circuit...

20-Jul-2021

McIvor, Bartholomew, Arafat, Daavettila, Savola Presented at the AusIMM Mill Operators Conference June 2021 ABSTRACT Ball mill media sizing investigations were carried out for the ball mill circuits grinding minus 12.5mm crushing plant product at Lundin’s Eagle Mine base metal concentrator in Hum...

20-Jul-2021

Ballantyne, Foggiatto, Staples, Lane Presented at the AusIMM Mill Operators Conference June 2021 ABSTRACT Vertical stirred mills are more frequently being applied at coarser grinding duties as a replacement for ball milling. This trend is being driven by reductions in footprint and operating cost...

20-Jul-2021

Wang, Vazirizadeh, Rosario Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Advances in data science, machine learning, and artificial intelligence are transforming mining and mineral processing, and making them more algorithm intensive. The paradigm is shifting from one of detec...

19-Jul-2021

Bartiea, Reutera Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Metals make modern societies function, and increasingly, various high purity precious and special metals endow sustainability-driving technologies with specific functionalities. These metals become heavily intertwi...

19-Jul-2021

Llamas, Korolev, Altinkay, Nikolopoulos, Haapalainen, Kolehmainen, Lundström, Geitenbeek, Weckhuysen, Stelter, Reuter Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Having a circular society where the residue generation is minimised is one of the challenges of our society. The...

19-Jul-2021

Di Feoa, Volcheka, Morina, Demersa, Mortazavia Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT The objective of this paper was to investigate the possibility of reducing process (fresh) water and increasing recycled water (thickener tank overflow water). As part of the investiga...

19-Jul-2021

Papadopoulou, Asbjörnsson, Hulthén, Evertsson Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Crushing plant managers need to assess, manage, and communicate the environmental impact induced by their crushing plant operations as a step towards the sustainable development of the...

19-Jul-2021

Pechea Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Since 1952, Bond’s equation has been used as a standard to predict the specific energy of grinding for a given duty. The Bond’s equation considers that the exponent is constant for all conditions. Hukki, in 1961, pointed out...

19-Jul-2021

Jiancheng He, Shijie Lu, Qiheng Zhu, DuboWang, Xiaoxu Sun, Jianchao Yao Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Tower mill is considered to have a better regrinding and fine grinding effect compared with ball mill, and its application is much broader. The spiral agitator...

19-Jul-2021

Ghoreishi-Madiseha, Shadi, Rafezi, Sasmito, Manouchehri, Hassani Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Weakening rocks by taking advantage of microwave-induced microcracks is a promising solution for comminution processes. This paper investigates the effects of microwa...

19-Jul-2021

Agbenuvor, Antonio, Jokovic,and Morrison Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Body breakage usually involves breakage of particles by compression between two surfaces or impacted against a rigid surface, with the latter of interest in this current study. This mode of...

19-Jul-2021

Published in Proceedings of the IMPC2020 Congress, SAIMM Filippov, Tripathy, Filippova, Diot ABSTRACT Among different pre-treatment methods, a high voltage electric pulse was recently developed and is gaining popularity due to multi-benefits such as pre-weakening along the grain boundaries, as we...

12-Jul-2021

Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Flotation concentrate originating from the Asarel-Medet porphyry copper mining and processing complex in Bulgaria has been subjected to regrinding using a Ro-Star mill; the effects of which on the downstream metallurgical behaviour...

12-Jul-2021

Published in Proceedings of the IMPC2020 Congress, SAIMM Authors Senchenkoa, Kulikov ABSTRACT The relationships revealed between ore hardness and specific energy consumed by crushing and grinding are described in the paper. A comparison of key technical and economical parameters of SAG and HPGR...

12-Jul-2021

CEEC has compiled some great examples of some of last year’s activities and contributions, including workshops, speakers, 2020 CEEC Medal winning work, sponsors, collaborators, projects and our collective approach to accelerating eco-efficient comminution for you to download here. The annual report...

15-Jun-2021

Hassani, Shadi, Rafezi, Sasmito, Ghoreishi-Madiseh ABSTRACT Enhancing the energy-effectiveness of microwave-assisted fragmentation is one of the overlooked areas in the published literature. A novel calorimetric technique is proposed to quantify the effect of inductive heating within a microwave c...

07-Jun-2021

Frausto, Ballantyne, Runge, Powell, Wightman, Evans, Gonzalez, Gomez ABSTRACT The heuristic of a constant liberation by size independent of the degree of comminution has been established as a robust assumption over time. Therefore, when assessing the comminution circuit performance, achieving a fi...

07-Jun-2021

Gao, Qina, Hana, Han, Lia Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT In the present study, an innovative comminution technology of high-voltage pulse discharge was proposed for galena to weaken the mechanical property. The results of pre-treatment experiments indicated tha...

18-May-2021

Roper, Borissenko, Daniel Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Eccentric High Pressure Centrifugal Comminution (eHPCC) is a novel comminution device that provides a single step to achieve a desired target grind size. The mechanisms within the unit mirror particle brea...

18-May-2021

Mousavia, Parsapourb, Tafvizia, Mahmoudic, Banisid Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Generally, regrind circuits are used to increase the degree of liberation of value minerals which are fed to flotation circuits. At the regrind circuit of the Sarcheshmeh copper co...

18-May-2021

Ross. Bergmann Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT The concept of underground ore processing, in which valuable ore and waste are separated at a coarse particle size to improve the economics of operations and minimisethe environmental impact, seems attractive from a...

18-May-2021

Wilkie, Keeney, Walters, Dyer, Tadesse Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT Grade Engineering® is a term trademarked by the Cooperative Research Centre for OptimisingResource Extraction (CRC ORE) and includes five key levers for upgrading ores and rejecting waste prio...

18-May-2021

Pyle, Valery, Holtham, Duffy Published in Proceedings of the IMPC2020 Congress, SAIMM ABSTRACT A conceptual scoping study was conducted to investigate pre-concentration options for upgrading ore from an Ag-Pb-Zn deposit. The low grade of the ore would result in only modest economic returns, given...

17-May-2021

Amini, Beaton Presented at the Preconcentration Digital Conference November 2020 ABSTRACT Application of ore pre-treatment technologies such as Grade Engineering and in-pit ore treatment require comprehensive analysis to show proven value is being generated by switching away from the current pr...

17-May-2021

Valery, Duffy, Holtham, Tabosa, Andrade Presented at the Preconcentration Digital Conference November 2020 ABSTRACT Pre-concentration has potential to significantly improve Mineral Resource efficiency by removing gangue early in the process, before energy intensive and expensive comminution and...

17-May-2021

Ehrig, Liebezeit, Macmillan, Li, Pewkliang, Smith Presented at the Preconcentration Digital Conference November 2020 ABSTRACT Pre-concentration of low grade ores via the rejection of low/no value materials based on fragment size is the subject of many published papers and studies over the past de...

17-May-2021

Scott, Amini Presented at the Preconcentration Digital Conference November 2020 ABSTRACT Grade Engineering® involves the planning, integration and operation of coarse preconcentration techniques to reject uneconomic material as early as possible in the mining value chain to improve the quality of...

17-May-2021

Dehkhoda, Salaya, Kwak, Keeney Presented at the Preconcentration Digital Conference November 2020 ABSTRACT In addition to volatile commodity prices influencing decision making, in recent years, social and environmental performance have become important decision drivers within the mining industry....

17-May-2021

A high-level study into mining energy use for the key mineral commodities of the future. Author Marc Allen, Technical Director, engeco Report commissioned by The Weir Group PLC Executive Summary The mining industry plays a critical role at the heart of modern global economy, extracting and pro...

10-May-2021

Spooner, Tsiminis, Moffatt, Payten, Teixeira, Klantsataya, de Prinse, Smith, Ottaway Presented at the Preconcentration Digital Conference November 2020 ABSTRACT Single wavelength fluorescence sensing has been used in the preconcentration of ores for many years in situations where it is typically...

27-Apr-2021

Gursky, Kuzio, Krot, Zimroz Abstract The low energy efficiency and excessive power of electric motors of large-scale vibrating machines for processing bulk materials motivated a new design of the inertial drive. This drive consists of one motor and two coaxial unbalanced masses, whose rotational f...

19-Apr-2021

Góralczyk, Krot, Radosław, Ogonowski Abstract Tumbling mills have been widely implemented in many industrial sectors for the grinding of bulk materials. They have been used for decades in the production of fines and in the final stages of ore comminution, where optimal levels for the enrichment p...

19-Apr-2021

Krot, Zimroz, Michalak, Wodecki, Ogonowski, Drozda, Jach Abstract The minerals processing enterprises are widely using vibrating machines to separate different fractions of materials. Sieving efficiency is greatly dependent on particle trajectories, or orbit, of periodical motion over the sieving...

19-Apr-2021

Souto, Bechir, Esteves, Galery, Senna Presented at the Preconcentration Digital Conference November 2020 ABSTRACT The current moment experienced by the mineral industry is marked by a series of economic, social and environmental challenges. Among the main challenges, it is important to highlight...

13-Apr-2021

Rutter, Scott, Odiar, Federov, Francois-Bongarcon Presented at the Preconcentration Digital Conference November 2020 ABSTRACT There are two fundamental methods for metalliferous sensing of primary crushed ore available for deployment at operations. These methods can be classed as surface measure...

13-Apr-2021