Rock Fragmentation by Blasting - Orica
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 achieve significant improvements in waste productivity, mill throughput, fragmentation …
Development of 3D rock fragmentation measurement system ...
Run-of-mine fragmentation is an important aspect of mine productivity optimisation, as it affects all mine-to-mill processes. In this study, a 3D rock fragmentation measurement (3DFM) system is proposed that can surmount the limitations of conventional 2D photo-based rock fragmentation measurement methods.
Prediction of Rock Fragmentation Using a Gamma-based Blast ...
A blast fragmentation model is developed based on the gamma function to describe the run-of-mine fragmentation distribution. The model presented is aimed to benefit from simplicity in application and also to be efficient in description of the fine to coarse part of the blast rock fragments. In fact, the gamma based model (KC-KUM), gives a...
Blast optimization - liming
Optimizing blast fragmentation to improve comminution efficiency. The Run-of-Mine (ROM) size distribution has a large impact on the performance of downstream crushing and grinding processes. The in-situ ore properties, drill blast pattern, and properties of the explosive govern the size distribution of rocks produced from a blast and the energy efficiency of the blast.
Prediction of Rock Fragmentation in Open Pit Mines
Prediction of Rock Fragmentation in Open Pit Mines, using Neural Network Analysis Kazem Oraee1, Bahareh Asi2 Loading and transport costs constitute up to 50% of the total operational costs in open pit mines. Fragmentation of the rock after blasting is an important determinant of the cost associated with these two components of mine development.
Measuring blast fragmentation at Esperanza mine using high ...
Abstract. 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 delineation errors because of variable lighting …
(PDF) Rock Fragmentation by Blasting – a review
Rock Fragmentation by Blasting – a review The rock fragmentation process in mining currently being practiced in India needs re-examination to improve the productivity of the mine.
Break it Better - Mine Blast Fragmentation - International ...
Their findings seems to reconfirm the work of Rholl and Stagg, done for the US Bureau of Mines3 in 1987 that “fragmentation improves above 3.3ms/m and is adversely affected below 1 ms/m or above 26 ms/m”. There is, as well, a great deal of speculation regarding the interaction of shock waves.
Measurement of Size Distribution of Blasted Rock Using ...
Optimum rock fragmentation improves the energy efficiency of comminution (Crushing & Grinding) processes and thousands of kilowatt-hours energy per year can also be saved. Blasting is the first step of the size reduction in mining and it is followed by crushing and grinding unit operations.
Mine-to-process integration and optimization
Mine-to-process integration and optimization. Understanding ore body characteristics allows for the optimization of operating strategies, maximizing overall profitability. Blast fragmentation has a significant impact on downstream comminution. Likewise, grind size strongly affects subsequent separation stages.
Improving Rock Fragmentation at the Ahafo Gold Mine Site ...
After a statistical analysis of the available data on post-blast fragmentation, it was observed that the desired run of mine (ROM) P80 target of 350 mm is rarely met.
fragmentation – Mining and Blasting
Rock breakage by Detonation and Interaction of explosive energy with rock – There are three sources of generation of fragments in mines: (a) Fragments formed by new fractures created by detonating explosive charge, (b) In-situ blocks that have simply been liberated from the rock mass without further breakage and (c) Fragments formed by extending the in-situ fractures in combination with new fractures.
A new framework for evaluation of rock fragmentation in ...
A model incorporating Rock Engineering Systems (RES) method was proposed by Faramarzi et al. (2013) to predict rock fragmentation in Sungun copper mine in Iran incorporating 16 effective parameters. Their model was compared by regression analysis and Kuz-Ram model. They concluded that the RES approach is more reliable than other two methods.
ROCK FRAGMENTATION - Today at Mines
rock fragmentation course: mngn 407 semester spring 2005 credits: 3.0 hours mining engineering department colorado school of mines golden, colorado instructor: dr. vilem petr [email protected]
Software & Service Overview - Hexagon Mining
from the mine; correlation of PSD to shovel maintenance and enhanced process control decisions; the only place to measure run-of-mine leach ore. Split-Desktop® is the industry approved software standard for manual, off-line coarse rock fragmentation size analysis of muck piles, leach pads and more. Split-NetSM service utilizes our
Mine-to-process integration and optimization
Likewise, grind size strongly affects subsequent separation stages. Mine-to-process integration optimizes each stage while considering the impact on the overall operation. Ore characterization. Blast fragmentation and comminution are primarily influenced by rock …