Fines and Dust generation and control in Rock Fragmentation by Blasting
A CFD model has been developed using the ANSYS CFX 10.0 software to simulate the dispersion of dust resulting from blasting operation in several limestone quarries in the presence of the physical ...
Integration and Optimisation of Blasting, Crushing and …
blasting, crushing and grinding processes to increase throughput. Using PTI's experience in Mine -to Mill optimisation and the results of the simulations a set of were made to site. Through a well-coordinated effort across multiple disciplines, Ahafo implemented a …
Impact of Blast Fragmentation on Crushing and Screening …
Modern quarrying operations focus attention on blasting operations as a critical component in the overall cost-effectiveness of quarrying. Generally, optimisation of blasting has been linked to the processes of drilling, explosive consumption, secondary breakage, and product haulage to the primary crusher. This approach gives no consideration to the impact of …
Blast Vibration and Fragmentation Control at Heavily …
The present paper attempts the evaluation the impact of geological discontinuities on fragmentation and optimization of blast design to control blast-induced ground vibration within safe limits. For this purpose, an extensive field study had been carried out in Sagmania and Birhauli Limestone Mines of Satna district, Madhya …
Blast Optimization and Ore Fragmentation Modeling
The influence of blasting doesn't stop at the crusher. Mill productivity, power consumption, and maintenance are a function of the feed. Modelling Blast Fragmentation. The common denominator in all models of fragmentation is the influence of rock properties and geologic structures within the blast.
(PDF) Rock Fragmentation by Blasting – a review
The fragmented material produced by blasting has a great influence on mining and construction in different aspects. [3] Cited from [4] that in mining and processing plants, rock fragmentation ...
Rock Fragmentation Size Distribution Prediction and …
The key objectives of mining blasting are to achieve the best rock fragmentation particle size distribution and obtain the optimum blasting parameters. The parameters affecting the rock blast fragmentation can be divided into the following two groups. The first group is the uncontrolled parameters,
Rock Fragmentation Evaluation towards Blast-To-Mill …
The blast-to-mill concept of fragmentation is the total appreciation of ensuring the achievement of optimal benefits from in-situ rock blasting on surface mining …
(PDF) Rock fragmentation size distribution control in blasting…
In this study, based on the Changjiu Shenshan limestone aggregate mining project in China, large-scale blasting experiments were conducted to investigate the influence of rock properties and ...
Energy control and block performance optimization of bench blasting …
The slope angle of the bench model was designed to be between 70° and 75° 29, 30; therefore, the slope angle of the test model was set to 70°.As indicated in Fig. 1 a, the upper and lower surfaces of the bench model were 300 × 250 mm 2 and 300 × 305 mm 2, respectively.The height and hole spacing were 150 mm and 100 mm, respectively, …
Optimization of the drilling-and-blasting process to …
Optimization of the drilling-and-blasting process to improve fragmentation by creating of a preliminary stress in a block Khalidilla Yussupov1, Saifilmalik Myrzakhmetov1, Khairulla Aben2, Serhii Nehrii3, and Tetiana Nehrii3 1Satbayev University, 050013, Almaty, Satpayeva 22a, Kazakhstan 2KAZ Minerals, 050020, Almaty, Omarovoi 8, Kazakhstan
(PDF) The Effects of Blasting on Crushing and Grinding
The fragmentation results then were paired with the crusher throughput values, and series of regression analysis were done in order to understand the effects of blast fragmentation on crusher ...
MODELLING FINES IN BLAST FRAGMENTATION AND …
• ROM fragmentation (after blasting) • after primary crushing • after stockpile as mill feed. The traditional method of assessing the size distribution of rocks is to sieve a representative ...
Prediction of the Median Fragmentation of Bench Blasting …
It is very important to predict the blasting fragmentation size of fractured rock mass. Based on the geological conditions of practical engineering rock mass, a plane analysis model of bench blasting in layered rock mass considering microcrack structure was established. And the distribution law of stress in the bench blasting of layered rock …
Blasting-crushing-grinding: Optimisation of an
DOI link for Blasting-crushing-grinding: Optimisation of an integrated comminution system. Blasting-crushing-grinding: Optimisation of an integrated comminution system ... By Kai Nielsen, Jan Kristiansen. Book Rock Fragmentation by Blasting. Click here to navigate to parent product. Edition 1st Edition. First Published 1993. Imprint CRC Press ...
Control of Rock Block Fragmentation Based on the …
Control of Rock Block Fragmentation Based on the Optimization of Shaft Blasting Parameters Qingxiang Li,1,2 Zhanyou Luo,2,3 Man Huang,1,2 Jiangbo Pan,4 Guoshu Wang,4 and Yunxin Cheng4
Optimization of blasting parameters and prediction of …
Through monitoring the blasting vibration of the slope, we can grasp the propagation mechanism of the blasting vibration wave, analyze the evolution characteristics of the displacement field and stress field of the slope in blasting vibration response, and then provide guidance for the optimization of blasting parameters and …
Reduction of Fragment Size from Mining to Mineral …
In brief, it is possible to realize optimum rock fragmentation by considering the blast-induced micro-cracks (or damage) inside rock fragments and the …
(PDF) Rock fracturing mechanisms by blasting
Optimizing blast fragmentation and reducing the damage from it are two important research subjects in this field. Detonation and explosive charge induces three sets of tension cracks in the ...
Reduction of Fragment Size from Mining to Mineral …
2.1 Energy. Rock drilling, blasting, and comminution (crushing and grinding) consume a vast amount of energy in hard rock mines. As mentioned in Sect. 1, statistics from hard rock mines indicates that drilling and blasting consumes 2% and comminution does 53% of the total energy input in the whole production chain from mining to mineral …
(PDF) Optimization of Blasting Parameters- A case study
The research was carried out as a practical method on Nchanga Open Pits (NOP) ore Bench to optimize the blasting design parameters that can yield the required fragmentation size thereby reducing ...
Rock fragmentation size distribution control in …
the effects of blasting parameters on blast fragmentation size distribution through experimental and simulation studies. For instance, Yi et al. (2017) utilized the finite element software LS-DYNA to investigate the influence of delay time and initiation location on blast fragmentation, with results indicating that longer
Rock Fragmentation by Blasting
By optimising rock fragmentation by blasting, you can achieve significant improvements in waste productivity, mill throughput, fragmentation profile and wall stability. Stuart Thomson, Orica's Global Bulk and Packaged Explosives Product Manager, explains in this paper how blasting improves productivity and environmental performance with some ...
Blast Design Parameters and Their Impact on Rock …
Rock fragmentation distribution influences a range of mining and milling processes including load and haul rates, crushing and grinding performance and ore recovery in …
(PDF) Integration and Optimisation of Blasting …
Integration and Optimisation of Blasting and Comminution Processes S Esen1, D La Rosa2, A Dance3, W Valery4 and A Jankovic5 ABSTRACT This paper presents the methodology for optimising blasting and …
(PDF) Integration and Optimisation of Blasting and
This paper will focus on the role of blasting in the optimisation of the entire mine to mill process chain and discuss elements of the PIO methodology: rock …
Enhancing rock fragmentation assessment in mine blasting …
Machine learning models (random forest regression, support vector regression, and XG boost), as well as a deep learning model (neural network …
Blast Design Parameters and Their Impact on Rock …
Blast design parameters of bench blasting are the controlling parameters which regulate the desired fragmentation level of a particular blast. Rock mass properties and blasting parameters control the efficiency of a blasting operation. But all the blasting design parameters cannot be changed depending on type of strata and bench height.
Rock fragmentation control in opencast blasting
The goal of efficient blasting can be achieved by investigating the relationship between blast design parameters and fragmentation. It is extremely important to make …
Prediction and Optimization of Blasting-Induced Ground …
Prediction and parameter optimization are effective methods for mine personnel to control blast-induced ground vibration. However, the challenge of effective prediction and optimization lies in the multi-factor and multi-effect nature of open-pit blasting. This study proposes a hybrid intelligent model to predict ground vibrations …