An investigation of rock breakage and damage in comminution equipment

Briggs, C.A.; Bearman, R.A.

doi:10.1016/0892-6875(96)00037-4

Cited by 23 publications

(4 citation statements)

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“…It correlates with UCS, but has been considered difficult to perform and limited in its application to soft materials. 16 Both the Hopkinson pressure bar 17 and the more recent Ultra-fast load cell (UFLC) utilize the force/time history of the impact to calculate the energy input to the system against product size distribution, 18 but the former has been considered difficult to operate and the latter is only capable of application to small particles.…”

Section: Impact Testsmentioning

confidence: 99%

Application of the ring-loaded strength test to determine comminution parameters

Marland¹,

Young²,

Blackburn³

et al. 2001

Mineral Processing and Extractive Metallurgy

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Section: Impact Testsmentioning

confidence: 99%

Application of the ring-loaded strength test to determine comminution parameters

Marland¹,

Young²,

Blackburn³

et al. 2001

Mineral Processing and Extractive Metallurgy

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“…Gauldie [2,3] proposed an empirical model of capacity by analyzing the structure of various crushing equipment. Briggs [4,5] and Bearman [6] presented a theoretical model of cone crusher capacity by evaluating the influence of mantle motion on the falling motion characteristics of particles. Evertsson [7,8] established a capacity model considering the motion characteristics of particles with sliding and free-falling based on the two-dimensional analysis of the force and acceleration of particles.…”

Section: Introductionmentioning

confidence: 99%

An Improved Capacity Model of the Cone Crushers Based on the Motion Characteristics of Particles Considering the Influence of the Spatial Compound Motion of the Mantle

et al. 2022

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Capacity is the important indicator of the cone crushers, which is determined by the motion characteristics of particles. The spatial compound motion of the mantle, which rotates both around the central axis of the cone crusher and its central axis, was analyzed to develop motion characteristic equations of particles. The velocity distribution of particles with different motion characteristics was determined by solving the motion characteristic equations of particles using the coordinate system transformation matrix. An improved capacity model of the cone crushers based on the motion characteristics of particles considering the influence of the spatial compound motion of the mantle was established by analyzing the velocity of particles in the upward and downward direction zones of the choke-level and the influence of circumferential deflection of particles on the velocity in the radial direction. A reduced-scale cone crusher with various rotational speeds was used to simulate cone crushers with different motion characteristics of the particles passing through the choke-level. The average error between the capacity calculated by the improved capacity model and the capacity determined according to the experimental data was 5.96%. Therefore, the accuracy of the improved capacity model was verified. The improved capacity model was used in the capacity calculation of the ZS200MF cone crusher; the error was 7.4% compared with the measured value at the production site; thus, the applicability of the improved capacity model is proved. The influences of four typical parameters of the cone crusher on capacity were investigated based on the improved capacity model, which provides theoretical support for the development of new high-efficiency cone crusher and the optimization of existing equipment.

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“…This can be achieved either by accelerating the sample against a plate using gravitational forces or the acceleration forces from a gun, or by advancing the sample with a fast moving tool, commonly realized in a rotor-stator impact system. Such a rotary impact tester design was first presented by Schönert et al [33] and has meanwhile been commercially adapted also for ore testing by Kojovic et al [34][35][36]. Figure 10 shows a schematic of the rotor-stator impacting system.…”

Section: Rotary Single Impact Testermentioning

confidence: 99%

Testing of Ore Comminution Behavior in the Geometallurgical Context—A Review

2015

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Abstract:Comminution tests are an important element in the proper design of ore beneficiation plants. In the past, test work has been conducted for particular representative reference samples. Within geometallurgy the entire ore body is explored in order to further identify the variation within the resource and to establish spatial geometallurgical domains that show the differential response to mineral processing. Setting up a geometallurgical program for an ore deposit requires extensive test work. Methods for testing the comminution behavior must therefore be more efficient in terms of time and cost but also with respect to sample requirements. The integration of the test method into the geometallurgical modeling framework is also important. This paper provides an overview of standard comminution test methods used for the investigation of ore comminution behavior and evaluates their applicability and potential in the geometallurgical context. Keywords: geometallurgy; comminution behavior; metallurgical testing BackgroundBefore concentration, metal ores have to be crushed and ground in order for the metal bearing minerals to be liberated. Sufficient size reduction by comminution is not only a prerequisite for any downstream physical separation, but is also the processing step within mineral processing that has the highest energy demand, and which, in practice, is often the limiting factor for plant capacity. Reliable OPEN ACCESS

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An investigation of rock breakage and damage in comminution equipment

Cited by 23 publications

References 1 publication

Application of the ring-loaded strength test to determine comminution parameters

Application of the ring-loaded strength test to determine comminution parameters

An Improved Capacity Model of the Cone Crushers Based on the Motion Characteristics of Particles Considering the Influence of the Spatial Compound Motion of the Mantle

Testing of Ore Comminution Behavior in the Geometallurgical Context—A Review

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