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copper comminution engineering :

The efficiency of copper ore comminution: A ... - ScienceDirect

2017.8.1  This study analyzes the exergy efficiency of comminution using a laboratory sized dry ball mill and a copper mineral ore from central Chile. In this research, we develop a minimum work index from uniaxial compression tests results on the ore fitted to Morrell’s

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The effects of electrical comminution on the mineral liberation

2015.10.15  Electrical comminution through SELFRAG treatment of a porphyry copper ore improved the chalcopyrite mineral liberation in the coarse size fractions; however, it

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(PDF) Comminution of Copper Ores with the Use of a High

2020.11.28  A comparative analysis of the efficiency of copper ore comminution, primarily taking into account the unit energy consumption and the efficiency of the milling

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(PDF) HPGR Comminution for Optimization of

2011.5.1  PDF High-pressure grinding rolls (HPGR) are an accepted, but continuously expanding, comminution technology. The copper

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Energies Free Full-Text Comminution of Copper Ores with

2020.11.28  The article presents research on the comminution of copper ore in a self-constructed mill using high-pressure water jet energy to investigate the usefulness of

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Coupling comminution indices and mineralogical

Semantic Scholar extracted view of "Coupling comminution indices and mineralogical features as an approach to a geometallurgical characterization of a copper ore" by J.

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Chemical Composition Data of the Main Stages of

2022.2.16  The first stage of copper processing is the comminution, which is carried out to liberate the copper-bearing minerals from the gangue by reducing the ore particle size. Firstly, explosions are made in the mine

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HPGR comminution for optimization of copper leaching

2011.5.1  Based on the current work and previous investigations, it was found that HPGR comminution within a crushing circuit, in specific instances, can result in 2 − >10%

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The efficiency of copper ore comminution: A ... - ScienceDirect

2017.8.1  This study analyzes the exergy efficiency of comminution using a laboratory sized dry ball mill and a copper mineral ore from central Chile. In this research, we

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(PDF) Benchmarking comminution energy

2014.10.1  Copper equivalent comminution energy intensity curve. Discover the world's research Content uploaded by Malcolm S. Powell Author content Content may be subject to copyright. ) Comminution...

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Benchmarking comminution energy consumption for the

2014.10.15  Therefore, concentrating the ore via gangue rejection or grade engineering prior to grinding is likely to achieve the largest positive effect on comminution energy efficiency. Graphical abstract. ... (2012) completed an audit of the energy consumed by comminution in Australian copper and gold producing mines. On average, 36% of the

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Economic, water and energy evaluation of early

2015.4.10  Copper loss makes the use of the DSFB uneconomical unless the reject from the DSFB is heap leached. ... B. Wills (Ed.), Comminution '12, Mineral Engineering, Capetown, South Africa (2012) Google Scholar. Bleiwas, 2012. D.I. Bleiwas. Estimated water requirements for gold heap-leach operations (ver. 1.1, December 11, 2012)

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(PDF) Comminution a Heart of Mineral Processing

2021.7.6  Edwin J. Y. Koh. In the early 1990s, engineers found that the interconnected nature of mining and minerals processing provided an opportunity to unlock additional value by breaking from the ...

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Comminution and liberation of minerals - ScienceDirect

1994.2.1  Two industrial problems, energy consumption and mineral recovery, have dominated research in comminution during the past five years. ... Minerals Engineering, Volume 156, 2020, Article 106454. ... The effects of electrical comminution on the mineral liberation and surface chemistry of a porphyry copper ore. Minerals Engineering, Volume

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Coupling comminution indices and mineralogical features

2019.1.1  Coupling comminution indices and mineralogical features as an approach to a geometallurgical characterization of a copper ore. ... Copper bearing minerals and pyrite are concentrated to deliver grades of 15–17% copper, 20–30 g/t gold and 5% arsenic on average. ... Such engineering-based data of an iron case is provided to test the impact of ...

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The Challenges and Prospects of Recovering Fine Copper

2022.5.6  Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are separated as tailings. However, a significant amount of copper is lost into tailings during the processing; therefore, tailings can be considered

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Authors - ResearchGate

consumption for the processing of copper and gold ores. Minerals Engineering 65, 109-114. ... sites, comminution of gold and copper ores can be expected to consume about 0.2% of global, and

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Chemical Composition Data of the Main Stages of Copper

2022.2.16  Department of Materials Engineering, Federal University of Rio Grande do Sul (UFRGS), Avenue Bento Gonçalves, 9500, Porto Alegre 91501-970, Brazil. 2. ... The first stage of copper processing is the comminution, which is carried out to liberate the copper-bearing minerals from the gangue by reducing the ore particle size. Firstly,

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Evaluating the performance of an industrial-scale high

2023.1.1  A comminution circuit of three-stage crushing and one-stage milling was adopted by configuring the tower mill after HPGR. As shown in Fig. 1, the primary crushing involves a C80 Jaw crusher comminuting the ROM ores from − 350 to − 70 mm for feeding the secondary crushing.In secondary crushing, a GP100M cone crusher is closed with a

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Minerals Engineering Vol 130, Pages 1-170 (January 2019 ...

Development of a comminution test method for small ore samples. H. Heiskari, P. Kurki, S. Luukkanen, M. Sinche Gonzalez, ... J. Liipo. Pages 5-11. View PDF. Article preview. Read the latest articles of Minerals Engineering at ScienceDirect, Elsevier’s leading platform of peer-reviewed scholarly literature.

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(PDF) Benchmarking comminution energy

2014.10.1  Assuming similar specific energy requirements for other sites, comminution of gold and copper ores can be expected to consume about 0.2% of global, and 1.3% of Australia's electricity consumption ...

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Development of a Carbon-Negative Process for Comminution

2023.3.9  Using the HyroFloat and /or Figure 5. Comminution cost reduction. bioleaching can minimize the loss. Assuming the feed grade of copper is 0.5%, increasing the recovery of copper from 80% to 100% will result

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Bridging the gap: Understanding the economic impact of ore

2016.5.15  Selective comminution using a pin mill, at a circumferential speed of 20 m/s, yielded a recovery of 96.5% of REE minerals and allowed rejection of 27% of barren material. This shows that both selective comminution and sensor-based sorting can be considered as complementary beneficiation steps when processing these REE ores.

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Development of a comminution test method for small ore

2019.1.1  Therefore, there is a clear need to develop a comminution test method that requires a small amount of material and produces results that can be correlated with the Bond test. It should also be possible to use that very same sample for mineralogical characterizations and beneficiation testing like flotation or magnetic separation tests.

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Coupling comminution indices and mineralogical

DOI: 10.1016/J.MINENG.2018.10.007 Corpus ID: 105385448; Coupling comminution indices and mineralogical features as an approach to a geometallurgical characterization of a copper ore

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Towards integrated geometallurgical approach: Critical review

2020.1.1  Geometallurgical estimation of comminution indices for porphyry copper deposit applying mineralogical approach (2017) G.E. Braun Quantitative analysis of mineral mixtures using linear programming. Clays Clay Miner. ... Minerals Engineering, Volume 170, 2021, Article 106923. Amir Adeli, , Chaoshui Xu.

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Extractive Metallurgy of Copper ScienceDirect

Description. Extractive Metallurgy of Copper, Sixth Edition, expands on previous editions, including sections on orogenesis and copper mineralogy and new processes for efficiently recovering copper from ever-declining Cu-grade mineral deposits. The book evaluates processes for maintaining concentrate Cu grades from lower grade ores.

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The effects of electrical comminution on the mineral liberation

2015.10.15  Electrical comminution through SELFRAG treatment of a porphyry copper ore improved the chalcopyrite mineral liberation in the coarse size fractions; however, it also led to considerably more oxidation and surface chemistry changes on the chalcopyrite. ... Copper sulphate was formed during SELFRAG treatment from further oxidation of the

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Advanced comminution modelling: Part 1 – Crushers

2020.12.1  The effect of decreasing grade on comminution cost per product tonne for copper is shown clearly by Ballantyne and Powell [4] in their Fig. 10. The larger proportions of gangue, which is a consequence of decreasing ore grades, sometimes present opportunities for early rejection of gangue (by sorting or more traditional beneficiation

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Breakage process of mineral processing comminution

2020.9.1  Engineering, Materials Science; Advanced Powder Technology; View via Publisher. doi. Save to Library Save. Create Alert Alert. Cite. Share. 18 Citations. ... The article presents research on the comminution of copper ore in a self-constructed mill using high-pressure water jet energy to investigate the usefulness of such a method for ...

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Reduction of Fragment Size from Mining to Mineral

2022.10.4  2.1 Energy. Rock drilling, blasting, and comminution (crushing and grinding) consume a vast amount of energy in hard rock mines. As mentioned in Sect. 1, statistics from hard rock mines indicates that drilling and blasting consumes 2% and comminution does 53% of the total energy input in the whole production chain from

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Quantifying Variability of Ore Breakage by Impact

2018.7.1  Then they showed how this variability had implications for the simulation of SAG mill performance, and in another work (Faramarzi et al., 2019) the approach was applied in a copper comminution ...

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Is progress in energy-efficient comminution doomed?

2015.3.15  J. Segura-Salazar N. Santos L. M. Tavares. Engineering, Environmental Science. Minerals. 2021. Comminution is an essential step in processing itabirite ores, given the need to liberate silica and other contaminants from the iron minerals for downstream concentration and then pellet feed. Expand. 3. [PDF]

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Towards integrated geometallurgical approach: Critical

Jackson et al., (2011) tried to unify geometallurgical approaches, and instead of deriving one definition, they proposed a construct to communicate the scope of the geometallurgical program. However, his approach was rather subjective. In this paper, we have tried to determine dimensions (aka attributes, see Fig. 1) of geometallurgy, either suggested by

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Comparison of the performance of different comminution technologies

2020.9.1  Comminution for mining and cement industries accounts for over 2 % of global energy consumption and an innovative Gyratory Rolls Crusher (GRolls®) technology has been developed in South Australia to reduce energy and water consumption, providing dry and wet crushing from ∼ 20 mm to 20 µm fractions without media, replacing up to two

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Minerals Free Full-Text Flotation and Tailing Discarding of Copper ...

2021.9.30  The mineral composition of copper–cobalt ores is more complex than that of copper sulfides, and it is also difficult to discard tailing efficiently in primary flotation for the fine-grained disseminated of ore. In this work, a mineral liberation analyzer (MLA) was employed to study the characteristics of minerals. As a significant mineralogical

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The use of solar energy in the copper mining processes

2021.10.1  Energy in the copper mining industry is needed in three forms namely: electricity, heat, and fuel. The share of each form of energy is 35% electricity, 26% Diesel-fuel, and 20% biomass-fuel. The cost of energy is currently high and represents about 25–30% of total operating costs ( Cochilco, 2020 ).

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(PDF) Evaluation of the Geometallurgical Indexes for Comminution ...

2019.12.7  Porphyry copper deposits are well known as the world’s primary source o f copper. Also, most Also, most of them contai n important sour ces of molybd enum and gold [18, 19] .

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Exploring the ultrasonic comminution of copper ores

1993.6.1  Minerals Engineering, Vol. 6, No. 6, pp. 607-617, 1993 0892-6875/93 $6.00+0.00 Printed in Great Britain 1993 Pergamon Press Ltd EXPLORING THE ULTRASONIC COMMINUTION OF COPPER ORES C. YERKOVICi, J. MENACHOi and L. GAETEt The Mining Metallurgical Research Center of Chile, CIMM, P.O. Box 170,

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Energy recovery potential in comminution processes

2013.6.1  Section snippets Heat generation in comminution processes. Using thermodynamics, it is possible to define an energy balance around the grinding circuit for the heat entering and leaving the grinding circuit (see Fig. 2) as follows: W ˙ c. v.-Q ˙ lost = m ˙ sl (h 2-h 1)Knowing the work input into the circuit as well as the circuit feed rate, there

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