Emerging advances, overall look AMIRA's point of view
22-Jan-2020
Recent Developments in Dewatering Technoligies for Tailings Disposal
15-Jan-2020
15-Jan-2020
Many ore bodies are getting harder, more abrasive, and lower in grade. One of the issues designers face is minimizing capital and operating costs when treating such ores. Designers often look to secondary or tertiary crushing followed by grinding in a semi-autogenous grinding mill with recycle crush...
06-Jan-2020
1Boliden Mineral 2University of Queensland Julius Kruttschnitt Mineral Research Centre (JKMRC) 3Boliden Aitik
The new Aitik autogenous grinding (AG) milling circuit was based on the successful original milling plant at Aitik, with a focus on low life-of-mine operating costs. At the heart of this is...
06-Jan-2020
Smaller scale beneficiation and concentration plants with a couple of hundred tonnes per hour capacity, as well as large concentrators like Cerro Verde, Mogalakwena, Boddington, Salobo, Sierra Gorda, and Karara have utilized high pressure grinding rolls (HPGR) technology and have operated successful...
06-Jan-2020
1COREM 2Project Côté Gold (Iamgold and SMM)
IAMGOLD’S Côté Gold Project is a Greenfields open pit gold mining project located approximately 125 km southwest of Timmins, Ontario, Canada. Côté’s mineralization is free-milling. However, grindability testing on several samples from the Côté Lake deposi...
06-Jan-2020
1Natural Resources Canada2Corem 3University of British Columbia
The aim of the Crush It! Challenge is to accelerate transformative solutions to reduce energy usage in the mill. Natural Resources Canada supported competition for innovative energy-efficient comminution with a contribution of $10 mil...
06-Jan-2020
JSC AK Altynalmas engaged Esen Mining Consulting Pty Ltd (EMC) to conduct a drill-to-mill plant optimization project to determine what opportunities exist to increase the mill throughput and improve the overall mine and concentrator performance. The scope of the project included in-situ ore body cha...
06-Jan-2020
1BHP Chile2CRC ORE
Mine-to-mill (M2M) optimisation is a mature methodology that has demonstrated significant benefits to operations globally. One drawback to the approach is that the audits conducted to calibrate the blasting and comminution models only capture an instant in the operation’s life. T...
06-Jan-2020
1JKMRC, Sustainable Minerals Institute, University of Queensland, 2Barrick Cortez Mine, Elko, Nevada, USA 3Hatch Engineering, JKTech
In expanding the mine to process considerably more competent ore sources, this semi-autogenous-ball mill-crusher (SABC) circuit with a single ball mill is not just th...
06-Jan-2020
Newmont has a demonstrated history as a leading investor in comminution technology developments. Most notably the cornerstone high pressure grinding rolls (HPGR) demonstration plant at the Lone Tree operation in 2003, which contributed to paving the way for the subsequent acceptance of HPGR technolo...
06-Jan-2020
Continuous improvement is a major key performance indicator (KPI) for many metallurgical operations. Improvement never happens by itself and is rarely attributed to a single party or person, but is rather the culmination of different factors, ideas, and efforts towards the overall improvement of a s...
06-Jan-2020
Assessment of comminution energy intensity has traditionally been confined to the crusher and mill motor power consumption. However, a measure of ancillary equipment power and the embodied energy consumed through media wear is required to compare disparate equipment types and circuit configurations...
06-Jan-2020
A comprehensive energy study was carried out for the Red Chris mill, which processes copper-gold ore at a rate of 30,000 tonnes per day (t/d) and is located in Northern British Columbia. The study focused on identifying opportunities for energy conservation in the semi-autogenous grinding (SAG)-ball...
06-Jan-2020
Mineral processing consumes significant power, primarily in comminution, as well as significant amounts of water through hold-up in conventional tailings facilities. Reducing power and water consumption in comminution circuits can contribute to reduced operating costs and improved sustainability. Me...
06-Jan-2020
A comprehensive energy study was carried out for the Red Chris mill, which processes copper-gold ore at a rate of 30,000 tonnes per day (t/d) and is located in Northern British Columbia. The study focused on identifying opportunities for energy conservation in the semi-autogenous grinding (SAG)-ball...
06-Jan-2020
High pressure grinding rolls (HPGR) are an energy efficient solution for comminution of industrial minerals and metal ores. The technology is successfully applied in an expanding field of applications throughout the minerals industry. HPGRs compress and grind the particle bed in the operating gap be...
06-Jan-2020
AG or SAG milling frequently becomes a bottle-neck in an operation as the generation of critical size pebbles and the subsequent required re-crushing of these results in an extra burden for the (S)AG mill in the form of a recirculating load of harder and more abrasive material.
HPGRs are high capac...
06-Jan-2020
30-Dec-2019
17-Dec-2019
17-Dec-2019
17-Dec-2019
17-Dec-2019
17-Dec-2019
17-Dec-2019
17-Dec-2019
17-Dec-2019
E Baawuah1, C Kelsey2, J Addai-Mensah3 and W Skinner4
ABSTRACT
Steel has been a major contributor to the recent global industrialisation due to its unique combination of strength, formability, versatility, recyclability and low cost. The primary raw material for steel making is metallic iron extra...
16-Dec-2019
E Baawuah1, C Kelsey2, J R Kelly3, J Addai-Mensah4 and W Skinner5
Abstract
Comminution continues to be the most capital intensive unit operation in mineral processing. The fundamental purpose of comminution is to liberate the valuable minerals so that they can be economically concentrated into sal...
16-Dec-2019
T. Robinson, B. Widdows and J. Rosenberg
MetPlant 2019, September 9-10, Perth, Australia
POSTER ABSTRACT
Increasing mill availability is a key improvement to the productivity of most mine sites. Mills are often running at maximum capacity, consequently any downtime reduces the mine output. O...
25-Sep-2019
G Borg, O Scharfe, A Kamradt, and N Meyer
MetPlant 2019, September 9-10, Perth, Australia
POSTER ABSTRACT
High-velocity impact breakage is an option to increase comminution efficiency significantly. The widespread application of traditional ball mills and SAG mills in comminution is cha...
25-Sep-2019
R Diaz-Colunga, S Gomez-Hernandez and R Espinosa-Gomez
MetPlant 2019, September 9-10, Perth, Australia
ABSTRACT
Fresnillo Plc (Fresnillo) is a Mexican Company owned by the “BAL Group”, focused on the production of gold and silver. It was established in 2008, initially consisting of three com...
24-Sep-2019
C J Greet, D Morgan, J Davis, G Small and X du Toit
MetPlant 2019, September 9-10, Perth, Australia
ABSTRACT
Laboratory test work completed on samples of Northparkes ore indicated that shifting from forged steel to more electrochemically inert high chrome grinding media produced a more oxidi...
24-Sep-2019
S.Morrell
MetPlant 2019, September 9-10, Perth, Australia
ABSTRACT
Whether it is for the purposes of the design of new comminution circuit, a brownfield expansion or a geometallurgical program, one of the principal keys to success is to “know your orebody”. To do so requires the formulation and e...
24-Sep-2019
K Ehrig, V Liebezeit, M Smith, B Pewkliang, Y Li and E Macmillan
MetPlant 2019, September 9-10, Perth, Australia
ABSTRACT
Copper-(Fe)-sulfide ore deposits typically have Cu grades varying from 0.5 to 5%. This equates to approximately 1.5 to 15% sulfide minerals, hence 85 to 98.5% of the rema...
24-Sep-2019
Hamid Manouchehri
Comminution '18, April 16-19, Cape Town, South Africa
ABSTRACT
As an energy intensive industry, mining consumes about 6-7% of total world’s energy to produce raw materials for subsequent industries. Grinding, however, is the most energy intensive process in mining which is respo...
25-Jul-2019
Gregor Borg, Oscar Scharfe, Felix Scharfe, Pablo Gonzalez Jimenez, Salvador Gomez
Physical Separation 2019, June 13-14, Falmouth, UK
ABSTRACT
Efficiency improvement in the comminution of ores has been on the international agenda of the mining industry for some time but substantial advances are st...
09-Jul-2019
Graeme J. Jameson, Cagri Emer
ABSTRACT
A new froth flotation machine has been developed, known as the NovaCell, which can recover mineral particles over a wide particle size range, from the lower limit of flotation, to an upper limit which depends on the liberation characteristics of the ore. In a...
09-Jul-2019
09-Jul-2019
09-Jul-2019
09-Jul-2019
T. Waters, A. Rice, J. Seppelt, J. Bubnich, B. Akerstrom
14th AusIMM Mill Operators' Conference 2018, 29-31 August, Brisbane
ABSTRACT
The Concentrator 1 plant at Cadia transitioned from Cadia Hill open pit to the Cadia East block cave ore body in 2013. As a result of this change, major plant upgr...
01-Jul-2019
F.P. van der Meer
Canadian Mineral Processors Conference, 23-25 January 2018, Ottawa, Canada
ABSTRACT
HPGRs operate in a wide array of applications in mining and minerals. These range from relatively coarse crushing of copper and gold ores at one end of the spectrum to the processing of fine iron...
28-Jun-2019
Y. Dumais, R. Lemire, T. Banerjee and H. Weitz
Canadian Mineral Processors Conference, 23-25 January 2018, Ottawa, Canada
ABSTRACT
Agnico Eagle LaRonde produces over 300,000 ounces of gold annually, along with silver, zinc and copper by-products. The LaRonde plant consists of a conventional SAG a...
28-Jun-2019
27-Jun-2019
Farhad Faramarzi*, Vladimir Jokovic, Robert Morrison, Sarma S Kanchibotla
Comminution '18, 22-25 January 2018, Ottawa, Canada
ABSTRACT
The standard JK drop weight test breaks single particles at five size fractions at different energy levels by dropping a given weight from a certain h...
24-Apr-2019
F.C.F. Batista, R. deS. Almeida, L. deA. Silva, T. Banerjee, D. Gudgeon
CMP 2018, 23-25 January 2018, Ottawa, Canada
ABSTRACT
Yamana Chapada’s mine is one of the larger copper-gold mines in Brazil. The mine is located in Goias state, in the central part of Brazil. The mine has estimated Mineral R...
24-Apr-2019
K. Bhadani, G. Asbjörnsson, E. Hulthén, M. Bengtsson, M. Evertsson
Comminution '18, 16-19 April 2018, Cape Town, South Africa.
ABSTRACT
Optimization is a pivotal point in distinguishing the competitiveness between industries that are developing, designing and operating products and pro...
24-Apr-2019
A Hinde, E. Ford, J. Makola, A. Jain
Copper Cobalt Africa, 10-12 July 2018, Livingstone, Zambia
ABSTRACT
A large contributor to the energy consumption of metallurgical plants is the mill circuit. A popular circuit configuration is one involving a primary open-circuit semi-autogenous mill fol...
23-Apr-2019