The design has been developed for a single-roll crusher with the forced supply of destroyed material into the crushing zone [].The capture of a crushed piece occurs due to the stop located on the roll (see Fig. 1); in this case, the condition for formation of a complex stress state in the crushed piece is observed, and the energy consumption is reduced by 39–40% [].
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This paper considers some crusher designs in which the destruction of the crushed piece occurs as a result of a complex stress state and proposes a new design of a cone …
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This paper presents the measurement and analysis of energy consumption of a laboratory jaw crusher during concrete recycling. A method was developed to estimate the …
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Download scientific diagram | Measured power consumption at different crushing conditions. from publication: A Comparative Study of Regression Model and the Adaptive Neuro-Fuzzy Conjecture Systems ...
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The main aim of the work was to determine the energy consumption of crushing process assuming a given level of fragmentation. Studies were performed on three rocks: granite …
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In theory, the rock that passes through the rotor does not travel directly toward the rock bed; rather, it hits the bed with an angle. This causes the rock particle to rotate while it hits rocks along the bed. ... The work in this article has focused on a way to model the capacity and power consumption in a VSI crusher. The simulations of power ...
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The research of crushing theory is mainly summarized as the following three major aspects: the study of strength theory, the research of crushing effect, and the research of crushing power ...
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In this vein, cone crusher models that not only are able to incorporate both power consumption, flow, and crushing prediction capabilities (Atta et al., 2019, Quist, 2012, Bearman et al., 1991), but also are of a dynamic nature and not prohibitively expensive in terms of computational power will be needed.
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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 …
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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 …
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MOVEMENT FREQUENCY OF JAW CRUSHER ON ENERGY CONSUMPTION TEODORA HRISTOVA1, ANGEL YANEV2, NIKOLAY SAVOV3 Abstract: In the paper, in accordance to the theory, it is shown that the relative energy consumption of a jaw crusher depends on the average diameter of the material entering the crusher and the width of the discharge port.
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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.
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Crushers and grinders are used for size reduction (also known as comminution). ... this figure has to be multiplied by 4/3 to give a power consumption of 18800 Watt (25.6 hp). Example 4.2 A batch crusher is run at constant power input. It was found that 30 minutes of operation were necessary to reduce the average particle size from 100 mm to 10 ...
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Abstract One of the main processes in the metallurgical, construction and mining industries is the process of grinding various materials as a primary raw materials preparation. The crushing of materials to obtain the required fraction annually consumes up to 4% of the world's electricity production, and for a single mine, the share of energy consumption for crushing …
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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 ...
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Teale first proposed the concept of power consumption in rock-breaking, and the ratio of power consumption to uniaxial compressive strength is used as an indicator for evaluating drilling ...
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To create high-performance single-roll gyration crushers, it is necessary to solve the issues concerning the justification and selection of the parameters of the working chamber and the actuator. This may improve the productivity and reduce the power consumption of the crusher . There are a number of research works that are devoted to the study ...
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Roll Crushers. In Mineral Processing Design and Operations (Second Edition), 2016. 6.1 Introduction. Roll crushers consist of two or more adjacent rolls placed parallel to each other and rotated in opposite directions. Single roll crushers are also available which rotate a single roll against a fixed breaker plate. Mineral or rock particles placed between the rolls are nipped and …
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Crushers. Barry A. Wills, James A. Finch FRSC, FCIM, P.Eng., in Wills' Mineral Processing Technology (Eighth Edition), 2016 Jaw-crusher Construction. Jaw crushers are heavy-duty machines and hence must be robustly constructed. The main frame is often made from cast iron or steel, connected with tie-bolts. It is commonly made in sections so that it can be transported …
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The power consumption by a crusher is calculated by summing all the energy dissipation components from the contact model in Eqs. (2) and (3) for all collisions (both …
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Another theory is the theory of Kick, ... This paper presents a methodology for the estimation of power consumption in a disc crusher disintegration process. The study covers the dynamic analysis of crush forces acting on the particles and the mobile disc. The forces can be expressed as functions that vary over time.
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In order to apply modern control theory to crushing it is first necessary to develop dynamic models that are sufficiently detailed to reproduce the essential dynamic characteristics of crushing. For a cone crusher this would involve accurately predicting the discharge si ze distribution, throughput and power consumption as a function of time.
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Abstract. This paper develops two optimal control models for the energy management of a mining crushing process based on jaw crushers. The performance index for both models is defined …
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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 …
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Fault diagnosis of mechanical equipment in high energy consumption industries in China: A review. Yongjian Sun, ... Xiaohong Wang, in Mechanical Systems and Signal Processing, 2023. 2.1.1 Crusher. Crusher is a widely used gravel machine, which is mainly used in the crushing of granite, limestone, quartz and other stones. The crusher can crush the stone into fine …
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THEORY: The Crusher has a fixed jaw and a moving jaw pivoted at the top with the crushing faces ... The work index includes the friction in the crusher and the power given by above eq is gross power PROCEDURE: • Start the jaw crusher and find the power consumption under no load condition with the help of energy meter and a stop watch.
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The article discusses the topic of the specific energy consumption of a jaw crusher with complex swinging of a moving jaw. It is driven by an asynchronous motor with a squirrel-cage rotor.
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tive power consumption [14], which, in turn, directly affects the energy efficiency of the crushing machine. Research goals: development of analytical method of determination of energy-power parameters of the drive of the hammer crusher with the grate; experi-mental validation of adequacy of mathematical model
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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 …
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66.2.1 Analysis of Existing Biomass Crushers. At present, there are mainly three types of straw crusher circulating in the market: hammer type, guillotine type, and screw type. Among them, the hammer type and the guillotine type use a hammer and a flying knife to form a cutting force to cut the straw; The machine has a large volume-to-power ratio and uses auger cutters for crushing …
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