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• ### Jaw Crusher ScienceDirect

01/01/2016· Michaelson expressed the jaw crusher capacity in terms of the gravity flow of a theoretical ribbon of rock through the open set of the crusher times a constant, k. For a rock of SG 2.65, Michaelson’s equation is given as (4.34) Q = 7.037 × 10 5 W k ′ L MIN + L T ν t / h for dimensions in metres and k ′ = 0.18 − 0.30 for straight jaws and 0.32–0.45 for curved plates with screened feeds.

• ### Capacities and performance characteristics of jaw crushers

trial jaw crushers was analyzed using the proposed equation in combination with that of Bond (1961) for calculating the energy requirement in size reduction. The equation for capacity The volumeof material (V) that passes through the crusher bottom opening per stroke is given by: If the machine is run at low speeds, the movement of the jaw allows sufficient time for the material to fall

• ### Crusher Wikipedia

31/03/2003· A jaw or toggle crusher consists of a set of vertical jaws, one jaw is kept stationary and is called a fixed jaw while the other jaw called a swing jaw, moves back and forth relative to it, by a cam or pitman mechanism, acting like a class II lever or a nutcracker. The volume or cavity between the two jaws is called the crushing chamber. The movement of the swing jaw can be quite small, since

• ### Jaw Crushers MEKA Crushing & Screening Plants

Jaw crushers reduce large rocks or ore by means of compression. Mechanical pressure is applied using the crusher’s two jaw; one is fixed while the other makes an eccentric movement. There are also primary and secondary types of these crushers. Jaw crushers are one of the most commonly preferred crushers due to their ability to crush all kinds of materials of any hardness, as well as their

• ### Jaw Crusher an overview ScienceDirect Topics

Jaw crushers are supplied in sizes up to 1,600 As the theoretical value of the surface energy of sodium chloride is only 0.08 J/m 2, the efficiency of the process is about 0.1 per cent. Zeleny and Piret (18) have reported calorimetric studies on the crushing of glass and quartz. It was found that a fairly constant energy was required of 77 J/m 2 of new surface created, compared with a

• ### Capacities and performance characteristics of jaw crushers

trial jaw crushers was analyzed using the proposed equation in combination with that of Bond (1961) for calculating the energy requirement in size reduction. The equation for capacity The volumeof material (V) that passes through the crusher bottom opening per stroke is given by: If the machine is run at low speeds, the movement of the jaw allows sufficient time for the material to fall

• ### Jaw Crushers QMS

The QMS jaw crusher design comes from various intense studies carried out by the QMS research and development team, including FEA and Fatigue Calculations, bench testing and theoretical calculations. All aspects of the QMS jaw crusher have been specifically assessed with attention to even the smallest of details, resulting in the highest possible reliability and

• ### Capacities and performance characteristics of jaw crushers

throw of the crusher, m. V: volumetric throughput of the crusher, per stroke, m 3. V h: volumetric throughput of the machine, m 3 /hr. w: width of jaws, m. W: theoretical (calculated) throughput of the crusher, th −1. W a: actual throughput of the crusher, th −1. W R: throughput of the crusher calculated by Rose and English equation, th −1

• ### MetE-215 Materials Processing Laboratory EXPERIMENT 1

Theoretical Capacity of Jaw Crusher = (0.6 * W * S) tons/hour, (W: Width", S: Set") 3 Set: The horizontal distance between the fixed jaw and the pivot. The size of the crushed product is determined by the set of the crusher. Gape: The distance between the fixed jaw and the tip of the swing jaw at the widest opening. Throw: Maximum distance of movement of the swing jaw. Angle of nip: The

• ### Industrial Solutions Jaw crushers ThyssenKrupp

2 Jaw crushers 3. Single-toggle jaw crushers design and operating principle Technical data Single-toggle jaw crusher Design The rates are based on theoretical calculations that have been verified by practical measurements. Deviations from the average throughput rate are dependent on: material, grain size, composi tion of feed material, hardness, tenacity, degree of purity and feed

• ### TECHNOLOGY & TRAINING OPTIMIZE YOUR OUTPUT

THEORETICAL REVIEW OF THE JAW CRUSHER COMPONENTS Frame and fixed jaw Moving jaw Eccentric shaft Drive Hydraulic system Lubrication system Auxilliary equipment OPERATION AND MAINTENANCE OF JAW CRUSHERS Review of daily, weekly and monthly service and maintenance points for the crusher and operational consequences that could potentially occur if these are not

• ### DETERMINATION OF THE INFLUENCE OF JAW MOVEMENT

2. THEORETICAL DETERMINATION OF THE OPTIMAL ANGULAR VELOCITY OF THE ECCENTRIC SHAFT OF JAW CRUSHERS Fig. 1 shows a drawing of a jaw crusher with an eccentric shaft. When the moving jaw is removed from the static [4], the crushed product is freely discharged through the disharge port of the crusher under its own weight. With each move

• ### (PDF) Optimum design and analysis of (the) swinging jaw

A jaw crusher is a kind of size reduction machine which is widely used in mineral, aggregates and metallurgy fields. The performance of jaw crusher is mainly determined by the kinematic features

• ### Determination of capacity of single-toggle jaw crusher

Theoretical, empirical and semi-empirical methods of capacity determination of a single-toggle jaw crusher are given, taking into account physico-mechanical properties of crushed material and