A review of modeling and control strategies for cone
This work opens with a brief review of the mechanical principles of cone crushers. Then, in the following sections, works available in the cone crusher literature, As an efficient modern rock-breaking technology, high-energy gas fracturing is widely used in oil well fracturing, shale gas extraction and gas extraction and Research and Application of High-Energy Gas Fracturing
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Dynamic Rock-Breaking Process of TBM Disc Cutters and
Based on the study and analysis of the rock-breaking mechanism of the TBM disc cutter, the dynamic response mechanism of rock mass under the action of the Torsional impact drilling is a new technology which has the advantages of high rock-breaking efficiency and a high rate of penetration (ROP). So far, there is no in The rock breaking and ROP increase mechanisms for
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Machines Free Full-Text Research on the Mechanism and MDPI
In this paper, we propose an ultrasonically coupled mechanical rock-breaking technology, creatively design an ultrasonically coupled mechanical rock To modernize and simplify control of its dry and wet plants, CTC Crushing partnered with InterConnecting Automation, an AutomationDirect system integrator, to upgrade an Modern controls, system integrator automate rock crushing
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Rock fragmentation mechanisms and an experimental
Abstract. Resonance drilling is a new technology, still at the laboratory stage. It has great potential to improve rock fragmentation efficiency. We analyzed the Modern rock crushers offer a level of versatility that suits various crushing needs. Whether it's hard rock, ores, or aggregates, these crushers are engineered to handle diverse materials withrock crusher zambia mining crushing plants LinkedIn
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Research on Crushing Concrete Members by High-Voltage Pulse
High-voltage pulse discharge (HVPD) is an energy-saving, efficient, and green technique, which has broad prospects in concrete crushing. The finite element models of the concrete beam, slab, and column segments were established with ANSYS/LS-DYNA finite element software. Based on the principle of equal impact pressure, the Safe and effective rock crushing is of great significance in municipal, mining and hydropower projects. At present, common rock fracturing technologies mainly include hydraulic fracturing, high-pressure gas blasting and explosive material blasting, etc. (Changyou et al. 2017; Hou et al. 2017; Zhang et al. 2019a).Hydraulic fracturing Research and Application of High-Energy Gas Fracturing
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Rock Crusher History-TY Industrial Technology Group
With the continuous development of productivity, jaw crusher cannot fully meet the needs of crushing technology. Therefore, people have designed a more efficient impact crusher. The development of impact crusher can be traced back to the 1950s, when the structure of the crusher was similar to that of the modern squirrel cage crusher, it When the shock wave in the confined medium with the vicinity of the explosive first impacts on the wall surface of the borehole, the strength of the induced rock shock wave far exceeds the dynamic compressive strength of rock and the borehole surrounding rock is subjected to intensive compressive damage [10].Hard rock is Rock-breaking mechanism and experimental analysis of
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Performance optimization of jaw-type rock crushing machine
A Review Nigerian Journal of Technology 36 (3): 814–821. Google Scholar; Olaleye B. M. 2010. “ "Influence of Some Rock Strength Properties on Jaw Crusher Performance in Granite Quarry" .” Mining Science, and Technology 20: 204–208. Google Scholar; Qian L., Feng X., and Zhang F.. 2011.Ultrasonic vibration rock crushing technology is a new type of rock crushing method, and it can be used in hard rock drilling. By applying high-frequency cyclic load to the rock, it promotes the expansion and penetration of micro-cracks inside the rock, causing fatigue damage, reducing the rock strength, and thus improving the rock Simulation and experimental research on ultrasonic vibration high
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Numerical and Experimental Study on Crushing Properties of
The reserves of high-quality coal seams have been greatly reduced in recent years, and the low efficiency of traditional cutting methods in hard coal seams has become a problem for the coal production industry. In order to improve the mining efficiency, an impacting-cutting technique was proposed in this study. A drum modification model 文章亮点. (1) 建立了动态光弹性-数字图像相关综合实验系统，提出了爆炸荷载下应力场全场主应力计算方法。. (2) 研究了爆炸应力波与裂纹的相互作用机理，发现爆炸膨胀波对相向扩展爆炸裂纹有抑制作用，剪切波对相向扩展爆炸裂纹有促进作用。. (3) 建立了岩石爆破基础理论与技术研究进展 USTB
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AT MINERAL PROCESSING Worldwide Mineral Processing
The target audience of AT MINERAL PROCESSING Worldwide are decision makers in mining and extraction industries (ores, potash and salt, fertilizers), non-metallic mineral extraction and processing, sand and gravel plants, other processing industries (cement, lime and gypsum) and construction waste recycling plants. Media Data Order magazine.High voltage pulse discharge (HVPD) is a new type of crushing technology with good application. Existing studies have focused on the crushing characteristics, with less reports on follow-up work. This study magnetization roasts hematite ore after mechanical crushing and HVPD, analyzing the difference in the roasting effect The application of high voltage pulses in the mineral processing
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Influence of Natural Aggregate Crushing Process on Crushing
Crushing is one of the most energy-consuming technological processes. The purpose of grinding is to achieve the desired grain size of mineral raw materials. The process of grinding consists of many factors, for example, the size and form of crushed grains, as well as their mutual arrangement inside the crushing machine chamber, the DEM-based models of cone crushers are gaining attention in the literature (Quist, 2012); however, their applications are limited to predicting the crusher performance from the crusher settings and feed properties in order to better understand the rock flow and breakage characteristics inside the crusher chamber and to aid in the design of new A review of modeling and control strategies for cone crushers
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A review of some nonexplosive alternative methods to conventional rock
The conventional blasting rock excavation method is the main means of rock breakage because of its high productivity, and it is relatively inexpensive compared to other methods. However, it raises safety concerns and can negatively impact the environment. The major disturbances that may be induced by this method include flyrock, gas emissions, and Internationally, there have been relatively systematic studies of side-slope stability technology management and homogeneous rock mass blasting theory in deep concave open-pit coal mines.(PDF) A brief history of the development of blasting and the modern
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A New Technology for Smooth Blasting without Detonating Cord for Rock
In modern tunneling development, smooth blasting technology is widely used for tunnel excavation in order to control tunnel profiles, decrease overbreak and underbreak volumes, and reduce vibration damage to surrounding rock caused by High-efficiency rock-breaking is a problem that has long been studied in the oil- and gas-drilling industry. The successful use of ultrasonic technology in related fields has prompted us to study how to introduce ultrasonic technology into rock-breaking in oil and gas drilling. This paper introduces and discusses the successful cases of Ultrasonic-Assisted Rock-Breaking Technology and Oil and Gas
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Analysis of Dynamic Damage Fractal and Energy Consumption
According to the relationship between strain rate and crushing energy density in Table 2, the reasonable strain rate range to achieve rock crushing can be treated as the intersection of the above sets, which should be 68.14–77.61 s −1, and the reasonable crushing energy density range should be 0.65–0.98 J/cm 3 (the dashed line range in To meet the diverse requirements in processing technology, mobile cone crushing plants are available in different sizes and configurations. Whether it’s a solo cone crusher, one used in addition to a triple-deck screen for closed-loop operation, or various-size cone crushers with a double-deck screen and oversize return conveyor, a suitable P&Q University Lesson 7: Crushing & Secondary Breaking
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Crushing and screening gets electrified Aggregates Business
The versatile Nordtrack I1011 crusher is suitable for working in different jobsites from rock crushing to concrete- and demolition-waste-recycling. It is transported on a “It features state-of-the-art crushing technology with modern lubrication, power systems and optimised hydraulics. Every element has been considered
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