13as it affects all mine-to-mill processes. In this study, a 3D rock fragmentation measurement (3DFM) system is14 proposed that can surmount the limitations of conventional 2D photo-based
Fragmentation size is a key parameter to the efficiency of numerous mining operations that makes use of explosives across all of the stages of production from mine (drill, blasting, haulage, etc ...
This approach focuses on the acceptability of rock fragments on the Run-of-Mine (ROM) pad as opposed to the pits. Fragmentation analysis was conducted in the pit and on the ROM pad. A correlation efficiency of 0.92 was realized between the measured rock fragments in the pit and that on the ROM pad.
Variability in blast fragmentation significantly affects downstream processes, such as mining, crushing and milling. Hexagon's integrated fragmentation analysis solution can help you manage rock size, minimise variability and increase profitability.
Fragmentation optimisation – adopting mine to mill for reducing costs and increasing productivity, in Proceedings 11th International Symposium on Rock Fragmentation by Blasting, pp 363–368 (The Australasian Institute of Mining and Metallurgy: Melbourne).
The process is scantly documented and accordingly field experiments were conducted using three firing patterns, viz., line, diagonal, and V-type, in a mine with minor variation in rock factor and ...
A reliable rock fragmentation prediction model is an essential aspect of blasting operations for improved production. Several models have been developed to predict the particle size distribution from a blast. The development of fragmentation models emanates from the need to provide engineering solutions to blasting problems such as the optimization of …
Fragmentation in sublevel caving (SLC) is vitally important. Both gravity flow and any downstream processes are affected. Reasonably coarse fragmentation may lead to larger draw bodies (isolated extraction zones) and hence potentially higher primary ore recovery and depressed/delayed waste rock inflow from above. Fewer flow …
Image analysis as a technique for fragmentation measurement of rock piles has been the subject of research since the 1980s, and to date, run of mine (ROM) fragmentation optimisation studies have ...
This study deployed a deep learning model Mask R-CNN to develop an automatic measurement method of blast fragmentation, trained using images captured from real blasting sites in Nui Phao open-pit mine in Vietnam. Blast fragmentation size distribution is one of the most critical factors in evaluating the blasting results and …
In this research, the size distribution of rock fragmentation at the Sungun Copper Mine was predicted by Kuz—Ram model. Results of image processing show that Kuz—Ram model overestimates the ROM size distribution.
The orebody and rock conditions at every mine are unique, therefore, each mine should have tailored solutions to allow for optimal orebody extraction. Fragmentation control is a challenging task since there are many parameters to take into account, which include rock structure, burden, spacing, hole diameter, bench height, and initiation timing.
run of mine (ROM) fragmentation is considered good when it is fine enough and loose enough to ensure efficient digging and loading operations. Mining optimisation strategy is hence usually focussed on minimising total mining costs and maintaining these ROM fragmentation characteristics. Although this approach ensures an efficient mining …
This study had presented the state-of-the-art review of the soft computing applications for optimum rock fragmentation and crusher productivity. The aim of study was achieved using the advanced review tools based on the data mined through the Scopus data-base. Through this, various methods of predicting the rock fragmentation method were ...
The results highlight the importance of optimizing blasting parameters and charge structure for large-scale mining operations to achieve uniform rock fragmentation and low fines content.
Two aspects of rock fragmentation that influence downstream mineral processing operations include the particle size of the run-of-mine ore and the degree of internal microfracturing in the ...
The effect of detonator placement on rock fragmentation by blasting was studied in the Kevitsa open-pit mine. Considering rock mass properties, explosives properties, and blast parameters, a comprehensive analysis of 37 production blasts confirms that the middle detonator yields finer fragmentation than the bottom detonator …
Over the last few years, use of artificial intelligence (AI) has increased in many areas of mining and allied branches of engineering. The technique has been successfully applied to solve many engineering problems and has demonstrated reasonable feasibility therein. A review of the literature reveals that geotechnical studies, mineral processing, reserve …
The rock blasting operation could be referred to as the first comminution process in quarrying and mining, and as a result of this, the size of fragments obtained should not exceed the gape of the ...
In this paper, burnt rock is taken as the research object. Based on the field investigation and data collection of open-pit mines with fire areas, the blasting and crushing mechanism of burnt rock ...
Reliable estimation of rock fragmentation is an important issue in the blasting operations in order to predict quality of the production. Since rock fragmentation is affected by various parameters ...
The development of fragmentation models emanates from the need to provide engineering solutions to blasting problems such as the optimization of run-of-mine (ROM) fragmentation (Esen, 2013 ...
The study was conducted in a limestone mine near Jaipur, India. The data pertaining to different aspects of the mine is compiled in Table 1. Blast data was generated from the mine using different firing patterns. The data thus generated was analysed further for impact of the firing patterns on the fragmentation.
An extensive multivariate analysis procedure for prediction of blast fragmentation distribution is presented. Several blasts performed in various mines and rock formations in the world are brought together and evaluated. Blast design parameters, the modulus of elasticity, in situ block size are considered to perform multivariate …
Image analysis as a technique for fragmentation measurement of rock piles has been the subject of research since the 1980s, and to date, run of mine (ROM) fragmentation optimisation studies have primarily relied on particle size measurement using photographic-based 2D imaging systems. Disadvantages of 2D imaging systems include particle …
fragmentation distribution to date that can be used in various open pit mines. Therefore, a new. framework to evaluate and predict fragmentation distribution is presented based on the image ...
Blast design has a big impact on process efficiency and site safety. We use tailored modeling and ore tracking tools in our blast optimization consulting to help you develop optimal blast designs for your operation. The result is better rock fragmentation in the blast to improve the efficiency of downstream processes while maintaining safe and stable …
Desired rock fragmentation is the main goal of the blasting operation in surface mines, civil and tunneling works. Therefore, precise prediction of rock fragmentation is very important to achieve an economically successful outcome. The primary objective of this article is to propose a new model for forecasting the rock fragmentation using adaptive neuro-fuzzy …
This paper reviews the influence of blast fragmentation on processing of metal ores. Two aspects of rock fragmentation that influence downstream mineral processing operations include the particle size of the run-of-mine ore and the degree of internal microfracturing in the fragments induced by blasting.
Image analysis as a technique for fragmentation measurement of rock piles has been the subject of research since the 1980s, and to date, run of mine (ROM) fragmentation optimisation studies have primarily relied on particle size measurement using photographic-based 2D imaging systems.
The necessity is discussed on the basis of the successful examples of mine-to-mill projects and theoretical analysis to current blasting and processing technology.
The mine predicts fragmentation using the Kuz-Ram fragmentation model, which is a commonly used method to predict blast fragmentation (Cunningham, 2005;Strelec, Gazdek, and Mesek, 2011; …
Table 2.1 Fracture intensity 𝑷𝒊𝒋 system (modified from FracMan Manual, Golder, 2016) - "Linking the fracture intensity of an in situ rock mass to block cave mine fragmentation"
The fragmentation of rock is fundamental to mining. It is the first preparatory stage in the extraction process – making rock small enough and loose enough to be efficiently excavated. But this simple statement underestimates how important this activity is for the whole mining operation. By optimising rock fragmentation by blasting, you can ...
This approach focuses on the acceptability of rock fragments on the Run-of-Mine (ROM) pad as opposed to the pits. Fragmentation analysis was conducted in the pit and on the ROM pad. A correlation efficiency of 0.92 was realized between the measured rock fragments in the pit and that on the ROM pad.
In addition, measuring run of mine (ROM) blast fragmentation is necessary for model calibration and their application in scenario based blast simulations (Onederra et. al., 2010).
Their findings indicated that rock fragmentation size increases with an increasing burden, decreases with a lower stemming-to-burden ratio, and shows an inverse relationship with hole spacing ratio. A moderate increase in specific explosive consumption can reduce rock fragmentation size.
