Influence of explosive energy on the strength of the rock fragments and SAG mill throughput

Michaux, Simon P.; Djordjević, N.

doi:10.1016/j.mineng.2004.07.003

Cited by 57 publications

(22 citation statements)

References 8 publications

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“…Mean size of fragmentation has been considered as main factor in evaluation of blasting patterns so far (Ghasemi et al, 2012a;Kulatilake et al, 2010;Michaux & Djordjevic, 2005;Morin & Ficarazzo, 2006;Sanchidrián et al, 2006). selecting of blasting patterns, only regarding fragmentation size factor, causes to neglect effect of other technical parameters such as back break, fly rock, ground vibration , air blasting etc., unless where these effects lead to some problems in mine.…”

Section: Introductionmentioning

confidence: 99%

Selection of Most Proper Blasting Pattern in Mines Using Linear Assignment Method: Sungun Copper Mine / Wybór Najodpowiedniejszego Schematu Prowadzenia Prac Strzałowych W Kopalni Miedzi Sungun Z Użyciem Metody Przyporządkowania Liniowego

Yari¹,

Bagherpour²,

Jamali³

et al. 2015

Archives of Mining Sciences

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One of the most important operations in mining is blasting. Improper design of blasting pattern will cause technical and safety problems. Considering impact of results of blasting on next steps of mining, correct pattern selection needs a great cautiousness. In selecting of blasting pattern, technical, economical and safety aspects should be considered. Thus, most appropriate pattern selection can be defined as a Multi Attribute Decision Making (MADM) problem. Linear assignment method is one of the very applicable methods in decision making problems. In this paper, this method was used for the first time to evaluate blasting patterns in mine. In this ranking, safety and technical parameters have been considered to evaluate blasting patterns. Finally, blasting pattern with burden of 3.5 m, spacing of 4.5 m, stemming of 3.8 m and hole length of 12.1 m has been presented as the most suitable pattern obtained from linear assignment model for Sungun Copper Mine.

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Section: Introductionmentioning

confidence: 99%

Selection of Most Proper Blasting Pattern in Mines Using Linear Assignment Method: Sungun Copper Mine / Wybór Najodpowiedniejszego Schematu Prowadzenia Prac Strzałowych W Kopalni Miedzi Sungun Z Użyciem Metody Przyporządkowania Liniowego

Yari¹,

Bagherpour²,

Jamali³

et al. 2015

Archives of Mining Sciences

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“…In addition, despite several authors such as Kojovic et al (1995) and Michaux and Djordjevic (2005) proving the positive impact of blast induced fracturing on comminution, there is a limited understanding about the influence of this phenomenon on the mechanisms that govern leaching performance.…”

Section: Introductionmentioning

confidence: 99%

A study of the impact of blast induced conditioning on leaching performance

Parra¹,

Onederra

Michaux

et al. 2015

Minerals Engineering

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“…Michaux and Djordjevic (2005) stated that up to a 20% increase throughput can be achieved by fragment strength reductions. Authors such as Schonert (1979) and Ozkahraman (2010) stated that the number of natural and induced fractures inside the fragments (fragment conditioning) is one of the key parameters controlling the breakage process during comminution.…”

Section: Introductionmentioning

confidence: 99%

Effect of blast-induced fragment conditioning on impact breakage strength

Parra

Onederra

Michaux³

2014

Mining Technology

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This paper presents the results of controlled blasting experiments and blast modelling carried out to understand and quantify the effect of blasting on the creation of fractures inside fragments referred to as conditioning. Fragment conditioning is studied through the use of indirect and direct measurement techniques on samples collected from different zones around an explosive charge. Modelling is used to map different levels of conditioning throughout the blasted samples and explore the impact of boundary conditions on the spatial distribution of conditioning levels. Combined statistical analysis of repeatable tests showed that the measured impact breakage ranking parameter (A*b) increased by 20 and 33% within the low and intermediate conditioning zones respectively. This translates into a statistically significant strength reduction of the material. These results in conjunction with other documented experience suggest that blast-induced conditioning can have a positive impact on comminution performance and thus energy consumption. Results from this work provide the basis for a methodology to better define postblast breakage strength inputs into comminution performance models; as well as a preliminary approach to scale up the extent and degree of conditioning by blasting. Further work is required to evaluate the ability to control the degree of conditioning through the application of improvements in designs and novel blasting technology

show abstract

Influence of explosive energy on the strength of the rock fragments and SAG mill throughput

Cited by 57 publications

References 8 publications

Selection of Most Proper Blasting Pattern in Mines Using Linear Assignment Method: Sungun Copper Mine / Wybór Najodpowiedniejszego Schematu Prowadzenia Prac Strzałowych W Kopalni Miedzi Sungun Z Użyciem Metody Przyporządkowania Liniowego

Selection of Most Proper Blasting Pattern in Mines Using Linear Assignment Method: Sungun Copper Mine / Wybór Najodpowiedniejszego Schematu Prowadzenia Prac Strzałowych W Kopalni Miedzi Sungun Z Użyciem Metody Przyporządkowania Liniowego

A study of the impact of blast induced conditioning on leaching performance

Effect of blast-induced fragment conditioning on impact breakage strength

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