A new framework for evaluation of rock fragmentation in …
In this model, the fragmentation is determined in terms of mass percentage, powder factor (applied blast energy per unit volume of rock) and mean fragment size: (5) X m = A q − 0.8 Q e 0.167 (115 E) 0.633 where X m is the mean fragment size (cm); A is the rock factor (illustrated in Table 1); Q e is the mass of explosives used in the hole (kg ...
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Renewable Energy Systems in the Mining Industry: A Literature Review …
39 -3581, [email protected]. Received: 2802.2022 Accepted: 24.03.2022. Abstract- Renewable energy (RE) sources such as solar, wind, geothermal, hydropower, and biofuels are counted as clean ...
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Full article: Mining method selection for extracting …
The objectives of this study are, (1) To investigate the geology and geotechnical properties of the ore body, (2) To evaluate the feasible ore-body characteristics, geomechanical parameters, and ore recovery and powder factor, and (3) To establish the technically applicable mining method based on given criteria and …
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(PDF) METHOD FOR CALCULATION OF DRILLING-AND …
A new method has been developed for calculation of drilling-and-blasting operations parameters during mining with emulsion explosives application, which results in minimization of energy ...
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Powder Factor: The Ineffective Design Tool | E & MJ
Powder factor is the ratio of pounds of explosive used in a blast to the total volume of rock blasted; a typical range for surface blasting is 1.0 to 2.0 pounds per cubic yard (lb/yd3). During the first few centuries of blasting the thought process was that each rock, depending on type and structural geology, had a specific powder factor that ...
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Journal of Powder Metallurgy and Mining Impact Factor:...
The graph shows the changes in the impact factor of Journal of Powder Metallurgy and Mining and its the corresponding percentile for the sake of comparison with the entire literature. Impact Factor is the most common scientometric index, which is defined by the number of citations of papers in two preceding years divided by the number of papers …
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Study of the Powder Factor in Surface Bench Blasting
DOI: 10.1016/J.PROEPS.2015.08.142 Corpus ID: 131234288; Study of the Powder Factor in Surface Bench Blasting @article{Fredj2015StudyOT, title={Study of the Powder Factor in Surface Bench Blasting}, author={Mohamed Fredj and Fredj Mohamed and A Hafsaoui and Korichi Talhi and Kamel Menacer}, journal={Procedia Earth and Planetary Science}, …
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Stemming and best practice in the mining industry: A …
The Journal of the Southern African Institute of Mining and Metallurgy VOLUME 121 AUGUST 2021 415 Stemming and best practice in the mining industry: A literature review T.E. Oates1 and W. Spiteri1 Synopsis In 2015, after amendments to the explosives regulations, stemming became a mandatory activity for all South African mining …
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Research trends in mining accidents study: A systematic literature review
6. Conclusion. The SLR examined research trends in mining accidents issues between 2015 and 2019 and successfully developed four main themes. These consist of the main causes of accidents (46%), and the prevention (20%), challenges (17%) and impacts of post-mining accidents (17%).
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Demystifying Powder Factor: How Do You Calculate It?
Powder factor is a critical factor in mining and blasting operations for several reasons. Firstly, it directly affects the efficiency of the blasting process. By …
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Systematic Literature Review: Critical Success Factor in the
This study uses a systematic literature review approach to the use of Data Mining with a focus on success factors. A keyword search yielded several CSF findings that had a major influence on ...
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Social impact assessment in the mining sector: Review and comparison …
The literature review performed in this study aimed at having a representative sample of studies from the literature, describing the most frequent social impacts occurring in the mining sectors. Therefore, the search was conducted through both commonly used web research engines and academic interdisciplinary databases …
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Powder factor prediction in blasting operation …
total production cost depends on it. It is a major input parameter in blast design as it influences the efficiency of subsequent operations in mining. Generally, effective …
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Blasting mechanics: Material properties and …
Today, we still hold the same belief that powder factor is a useful tool for economic analysis but is a poor tool for the design of blasts because powder factor varies based on: rock type, rock structure, type …
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INFLUENCE OF MECHANICAL AND AGGREGATE …
Powder factor was plotted against each selected rock property and regression analysis was performed on test results to understand their standalone influence. The only realized best
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Wear Performance of Metal Materials Fabricated by Powder …
The experimental results show that the laser power is the main factor affecting the wear of the parts. The microstructure of the sample shows that the number of pores increases with the decrease of laser power. ... "Wear Performance of Metal Materials Fabricated by Powder Bed Fusion: A Literature Review" Metals 10, no. 3: 304. https://doi ...
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Review A review of sustainable mining and resource management
A systematic literature review was performed, the first step of which involved selecting databases of published peer-reviewed journals and searching for keywords such as "sustainable mining", "sustainable development AND mining", "sustainability and mining", as well as more generally "sustainab* AND mining".
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Evaluating the effectiveness of powder factor
This is because a powder factor of 1.1 may work for a bench that has a height 2.75 times the burden, but benches with a height less than this may require a higher powder factor to blast. Instead, because a …
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[PDF] A review on the prediction and assessment of …
In this paper, the various methods for powder factor estimation based on empirical and comminution theory modelling as well as machine learning approaches in …
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(PDF) Overbreak and underbreak in underground openings …
According to above literature review, the rock mass conditions (non-controllable parameters) are the predominant control factors of over-excavation due to tunneling by drilling and blasting ...
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Metals | Free Full-Text | Current Status and Challenges of Powder …
Powder bed fusion (PBF) is recognized as one of the most common additive manufacturing technologies because of its attractive capability of fabricating complex geometries using many possible materials. However, the quality and reliability of parts produced by this technology are observed to be crucial aspects. In addition, the …
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Stemming and best practice in the mining industry: A literature review
fume generation. The review of the literature indicates some motivation for not using stemming for pre-. split, trim, hot hole, and reactive ground blasting, provided the benefits associated with ...
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The Influential Role of Powder Factor vs. Delay in Full …
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(PDF) Fragment Size Distribution in BlastingWEBThis paper aims to review the various methods for powder factor estimation in both surface bench blasting and underground tunnel …
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[PDF] A review on the prediction and assessment of powder factor …
Powder factor can be defined as the quantity of explosives (kg) required to break a unit volume or tonne (t) of rock. The prospect of excavating rocks by blasting is characterized by a specific consumption of explosives. In the past decades, researchers have come up with several precise approaches to predict powder factor or specific …
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Systematic Review of Machine Learning Applications in Mining …
Recent developments in smart mining technology have enabled the production, collection, and sharing of a large amount of data in real time. Therefore, research employing machine learning (ML) that utilizes these data is being actively conducted in the mining industry. In this study, we reviewed 109 research papers, …
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Empirical relation between powder factor, fracture, frequency …
Powder factor can be defined as the quantity of explosives (kg) required to break a unit volume or tonne (t) of rock. The prospect of excavating rocks by blasting is characterized by a specific ...
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Factors driving or impeding the diffusion and adoption of …
Our systematic review of the literature demonstrates that research on the diffusion of innovation and technology adoption in the mining sector is a comparatively small, yet growing, research field. The analysis of previous literature suggests that there are ample opportunities for future research to contribute to this stream of literature and ...
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Optimization of Blasting Parameters in opencast Mines
MINING ENGINEERING BY MANMIT ROUT & CHINMAY KUMAR PARIDA ... CHAPTER 2: LITERATURE REVIEW 4-8 CHAPTER 3: DRILLING AND BLASTING IN LARGE OPENCAST MINES 3.1 Drilling. 3.2 Blasting ... Powder factor (desired), iii. Cost of explosive, iv. Numbers of holes required to blast.
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sbm/sbm literature review of powder factor in mining.md …
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
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ASSESSMENT OF POWDER FACTOR IN SURFACE BENCH …
Rock mass characterisation helps in selection and o ptimum usage of explosive in bench blasting. There are various methods to characterize the rock mass but use of Schmidt hamme r in rock characterization before blasting may be a good option. Schmidt hammer, since its simplicity and capability of inst ant data production, has so far …
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