Studying the Effect of Ore Texture on the Bond Work Index at the Mahd Ad Dahab Gold Mine: A Case Study

Abdelhaffez, Gamal S.

doi:10.17794/rgn.2020.1.9

Cited by 8 publications

(7 citation statements)

References 18 publications

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“…The relationships between petrographical and mechanical properties of rocks have been investigated in several studies [2,3,21,22,23,24]. The rock mechanics and crushability tests are frequently used in the simulation and modelling of the processes occurring in the comminution equipment, and they can be used in the studies of the relationship between rock properties and grindability [25].…”

Section: Relationship Between Petrographical Properties and The Crushmentioning

confidence: 99%

“…Several authors have investigated the relationship between the Bond-work index (Wi,B) and the rock texture. Abdelhaffez [22] has reported that the overall mineralogy itself has little effect on the Wi,B. The presence of secondary sulphate minerals, the difference in the hardness of the sulphate minerals, but mostly the degree of cohesion of the ore minerals with the enclosing gangue minerals and the variation in the composition of the gangue minerals plays an important factor in the mineral processing.…”

Section: Relationship Between Petrographical Properties and The Crushmentioning

confidence: 99%

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The interrelation of petrographical propeties of rocks and their crushing and grindig features : A literature review

Márkus

2021

MDT

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The energy consumed in the process of comminution highly depends on the mechanical properties of the materials being ground, which is controlled by the constituent minerals, their relative abundance and the texture. The quantitative description of textural information is essential in determining which textural characteristics can be attributed to certain mineral processing behaviours. The researcher’s opinions on the effect of different textural elements on the grindability differ. A correlation which can attribute numerical crushability and grindability values to certain textural features have not been established yet, however some general conclusions can be drawn. The effect of the mineralogical constitution is negligible, but the variation in hardness and the texture has a great impact.

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Section: Relationship Between Petrographical Properties and The Crushmentioning

confidence: 99%

Section: Relationship Between Petrographical Properties and The Crushmentioning

confidence: 99%

The interrelation of petrographical propeties of rocks and their crushing and grindig features : A literature review

Márkus

2021

MDT

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“…One of these studies examined the failure of fractured rocks under uniaxial compression, which resulted in the spread of the first micro fractures over a wide shear band, as well as the coalescence of micro fractures into a critical shear failure zone, which resulted in limited testing of this failure. At elevated confining pressures, the Elastic moduli and peak strength values of rock increase, and the deformation passes from fragile to spermatogenesis [1]- [3]. Numerous studies have shown that particle size is crucial, because it is used to identify the mechanical behavior of rock samples of the same composition.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of gold ore properties and their impact on grinding operations

Hassan¹,

Ali²,

Farghaly³

et al. 2022

Min. miner. depos.

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Purpose. The purpose of this paper is to evaluate the efficiency of grinding operations in terms of how mechanical properties (e.g., strength properties and ore texture) affect the Bond Work Index. Methods. The specimens have been collected in the Eastern Desert of Egypt, namely Abu Marwat, Hamash and Al Sadd. As a result, strength parameters such as compressive strength, cohesiveness and hardness have been assessed. Ore texture, mineral content and bonds between tiny fabric units have been examined using X-Ray Diffraction (XRD) and thin section. Findings. This research shows that as the strength properties of the rock increase, the Bond Working Index also increases. Moreover, the results indicate that the level of cohesion of ore minerals with the surrounding tailings, on the one hand, and the variance in the tailing content, on the other hand, play a significant role in the processing operation, given the discrepancy in the Bond Work Index for the six Abu Marawat gold ores of 18.8%. Originality. This research attempts to develop a methodology for assessing the efficiency of grinding operations as a function of rock strength properties and ore texture in relation to the Bond Work Index. Practical implications. Ore texture is one of the most important factors influencing the grinding process. Since grinding consumes a considerable amount of energy, the economic evaluation is based on increasing the grinding efficiency. According to previous research, the petrographic, which varies from sample to another, has an impact on the mechanical properties as well as the grinding operations.

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“…The relationships between petrological and mechanical properties of rocks have been investigated by numerous authors [1,2]. The mechanical properties are mainly influenced by the mineral association, their distribution, shape, size, orientation or in other words the texture and the degree of alteration, cracks, and porosity.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Petrological Properties of Andesites from Tállya Quarry, Hungary and Their Influence on the Resistance to Wear and Fragmentation

Márkus

Rácz

2022

Geosciences and Engineering

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The two most common used mechanical test in the aggregate industry for quality control are the resistance to wear (micro-Deval) and resistance to fragmentation (Los Angeles) tests. The quality of aggregates strongly depends on the textural, structural, and mineralogical features of the crushed material. These rock properties were experimentally studied on andesite samples from Tállya quarry. The mineralogical and chemical composition of samples were determined, textural observations were made on thin sections. The alteration was quantified using the chemical composition and mineralogical data. Micro-Deval and Los Angeles tests were conducted on the samples. The micro-Deval indices and the Los Angeles values showed similar trends, although the different type of stresses. The results showed that the examined mechanical properties of the Tállya andesites are complexly influenced by the textural and structural features, mineralogical composition, and alteration, however alteration has one of the most significant effects.

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Studying the Effect of Ore Texture on the Bond Work Index at the Mahd Ad Dahab Gold Mine: A Case Study

Cited by 8 publications

References 18 publications

The interrelation of petrographical propeties of rocks and their crushing and grindig features : A literature review

The interrelation of petrographical propeties of rocks and their crushing and grindig features : A literature review

Evaluation of gold ore properties and their impact on grinding operations

Investigation of the Petrological Properties of Andesites from Tállya Quarry, Hungary and Their Influence on the Resistance to Wear and Fragmentation

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