• When idling jaw crushers consume approximately 50% of the power of full operation and gyratory approximately 30%. •Installation of an underground jaw crusher may cost up to six times as much as the crusher itself. • A 48 by 60 jaw crusher produces approximately 1.8 tons per horsepower-hour (2.2 t/kWh) at a 6:1 reduction ratio.

Learn MoreThe SMC and Bond ball work index experiments as well as the Morrell model indicated that the order of the specific energy consumption of comminution was "Jaw crusher + HPGR mill + ball mill" < "Jaw crusher + ball mill"< "SAG mill + ball mill".

Learn More= mean feed size w g= work index, which is 16 for granite Q = Crusher capacity M = bending moment in the jaw I `= second moment of area of the jaw t `= thickness of the jaw ê ì= yield strength of the jaw material ΔE = maximum luctuation of energy

Learn Moreprocessing zone of a crusher, a cubic and a spherical specimen of limestone were prepared, and their fracture process in a laboratory jaw crusher were studied using a high-speed camera PFC3D model of rock and jaw crusher In order to examine the fracture behaviour of the rocks and to determine the applied energy in a jaw crusher, a PFC3D

Learn More4.3. METSIM grinding circuit (Jaw crusher model) for calculation of comminution energy for refractory lining showing mass flow rate and P80 for respective • Recovery of the crushed lining and prepare re-usable castables for low duty applications. • Bond Work Index testing to evaluate the energy...

Learn MoreThe results of the standard Bond work index grindability tests performed with both the microwave treated copper ores, on the other hand The ore samples, collected from two copper concentrator plant feeds, were crushed to below 25.4 mm in a jaw crusher and screened into size fractions.

Learn MoreWith reference to the case of the jaw crushers and to the specific subject of the comminution law, the tests reviewed and analysed in this contribution have been carried out, at a laboratory scale, on five different materials (limestones, quartzite, serpentinite) at different reduction ratios and feed rates, and accurately recording both total ...

Learn MoreThe Bond Work Index is calculated using the formula: ... Andesite and limestone samples were prepared by crushing in a laboratory jaw crusher and roll crusher in a closed cycle with screening to size 100% -3.327 mm.

Learn MoreConventional reciprocating crushers, eg jaw, gyratory and cone HPGRs Tumbling mills are described using 2 indices: M. ia. ... Conventional Crushers . Equation 1 for conventional crushers is written as: f x f x 2. 1 c c 2 ic. 4 2 W S K M x x. 1 (7) ... has to supply this energy and it has a different (higher) work index than the crusher (ie ...

Learn Moreacceptable to laboratory Denver Jaw crusher, then to cone crusher and finally Roll crusher. The samples were crushed and pulverized, part of pulverized samples were weighed for sieve analysis. The modified Bond’s method of determining the net work index of ore involving the use of reference ore of which grindability is known. The

Learn MoreA work index measurement was determined that links the specific energy consumed in the test to the • A locked cycle test akin to the Bond Work Index test can be conducted to determine a • A new version of CEET has been written to forecast throughput for a given Secondary Crusher, HPGR...

Learn MoreFeb 25, 2015 · Jaw Crushers The next development in the field was the invention of Jaw Crushers in 1840’s in North America. Eli Blake patented the Double toggle Blake Jaw Crusher in 1858. The Blake type Jaw crusher has fixed feed opening where as the dodge type jaw crusher has fixed discharge opening. 2/25/2015 6:58:05 AM 5 6.

Learn Moreis NOT the Bond ball work index). M. ic. and M. ih. values are also provided as a standard output from a SMC Test ® (Morrell, 2009). The general size reduction equation is as follows (Morrell, 2004. b): f x f x 2. 1 i i. 4 2 W M x x. 1 (1) where . M. i = Work index related to the breakage property of an ore (kWh/tonne).Forgrinding from the ...

Learn MorePDF | The Bond work index is a measure of ore resistance to crushing and grinding and is determined using the Bond grindability test. Determining the Bond work index value is quite complicated, time-consuming and requires trained operating personnel and therefore is subjected to...

Learn Moreapplication of crushing law. Jaw Crusher Working Principle. A sectional view of the singletoggle type of jaw crusher is shown below. In one respect, the working principle and application of this machine is similar to the Dodge crushers; the movable jaw has its maximum movement at the top of the crushing chamber, and minimum movement at the discharge motion is, however, a more complex one than ...

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