Figure Test set up for END wedge test After Donovan and Karfakis 2003 "Fracture Toughness Based Models for the Prediction of Power Consumption Product Size and Capacity of Jaw Crushers"
In this study an analytical perspective is used to develop a fundamental model of a jaw crusher Previously jaw crushers were modelled in regard to certain aspects for example energy consumption Legendre and Zevenhoven 2014 or kinematics Oduori et al 2015 Approaches to date have been mainly property specific
Energy consumption for crushing various materials makes up a large share up to 5% in the energy balance of the world Many industrial industries including mining process large according to the limiting values of which their power is calculated Crushers operating on the compression of the destroyed material have approximately the same
The Energy Consumption Theory sometimes referred to as Energy Cost Theory states that the cost of using energy resources in production and service business operations can be compensated by the
directly relates to the wear and energy consumption in jaw crushers Similarly Korman et al Korman et al 2015 stated that the uniaxial compressive strength of rocks is a dominating factor
Figure Physiographic provinces of Virginia Piedmont is green 2nd from right From VA DMME 2003 "Fracture Toughness Based Models for the Prediction of Power Consumption Product Size and Capacity of Jaw Crushers"
In 1950 the American Fred Chester Bond put forward the crack theory which believed that the power consumption of the crushing process is proportional to the length of the cracks formed during the crushing process The theory became the widely used third theory of crushing and is suitable for medium and fine crushing
Abstract Analytical method for determining the energy power parameters of the crushing process in a rotary hammer crusher with a grate is proposed Using the method of equivalent power required for the electric motor drive of the crushing machine at the steady mode of operation and basic laws of general mechanics we explain the following the dependences
Highlights Estimation of power consumption in a disintegration process in disc crushers Dynamic analysis of forces acting on the particles and the disc crusher Detailed analysis of the resultant
With the development of the modern social economy the amount of material needed to be crushed has gradually increased along with a proportional rise in energy consumption However cone crushers
This paper provides an energy consumption model and explains how the operating conditions and structural parameters of a crushing chamber affect energy consumption Energy consumption is closely related to compressive pressure and displacement The relationship between pressure displacement and structural parameters is discussed The
PDF On Aug 21 2003 James George Donovan published Fracture Toughness Based Models for the Prediction of Power Consumption Product Size and Capacity of Jaw Crushers Find read and cite all
Several works from the literature have reported applications of process control strategies in the mineral processing industry For example Wei and Craig 2009 published a survey with qualitative data from process control solutions and Bouffard 2015 reported quantitative data supporting the benefits of such strategies A series of works Bouchard et al
types of disc crushers The relationship between energy consumption and product size in a disintegration process is the fundamental pillar of the theory of the disintegration process [5] For that reason it is important to obtain the power consumption which is related to energy consumption in a time interval Consequently the
Crushers are energy consuming devices of conveying systems as well In [7] From the control theory perspective the open loop optimization cannot deal with certain disturbances and unexpected reactions of the coal conveying system components The dynamic energy consumption associated with start up and stop of the belt conveyors and
Figure Location of rock quarries that provided specimens From Luck Stone 2003 "Fracture Toughness Based Models for the Prediction of Power Consumption Product Size and Capacity of Jaw Crushers"
Rittinger s theory and law of the energy expended in crushing of rock is that the work of crushing is proportional to the reduction in diameter; or as I have more fully expressed it The work done in crushing is proportional to the surface exposed by the operation; or better expressed for this purpose the work done on a given mass of rock is proportional to the
The objective of this research was to develop a mathematical model for gyratory crushers to help in the prediction of energy consumption and to analyze dominant parameters that affect this energy consumption The development of a gyratory crusher model was achieved in the following three main stages mathematical representation and coding of the crushing process;
In a typical coal fired power plant crushers consume around % to 1% of the total electricity generated For a 1000 MW power plant this translates to approximately 5 10 MW of power consumption solely for crushing operations This figure may vary depending
Energy consumption of the crushers depends on three parameters which are size distribution of the heap mass flows of the crushers and reduction ratio of the crushers crusher type Image processing technique is generally used in order to determine size distribution of the heap occurred as a result of blasting However it is known that there
The issue of determining the energy power indica tors of hammer crushers was discussed in detail earlier A large number of studies were carried out along this direction the main provisions of which are reflected tive power consumption [14] which in turn directly affects the energy efficiency of the crushing machine
The paper presents a new method of determining the energy consumption for vibratory crushing Using the laboratory vibratory jaw crusher with kinematic actuation of the jaws the study of
