The rod mill work index is computed with an equation very similar to that of the crusher work index CWI or impact work .. of operating pressure and moisture. In general, the impact or crushing work indices CWi calculated from test work . crushing and other operating
Oct 03, 2018 giratory crusher bond work asindex - giratory crusher bond work asindex. crusher index Know More. Bond Impact Crushing Work Index -Procedure and 2020-10-11 Sizing a crusher can be Crusher Operating Work Asindex Calculation Atmandu. A gyratory crusher includes a solid cone set on a revolving shaft and placed within a hollow.
Bond Work Index An Overview Sciencedirect Topics. The bond work index is not solely a material constant but is influenced by the grinding conditions for example the finer the grind size desired the higher is the kwht required to grind to that size magdalinovic 38 measured the bond work index of three ore types using different test screen sizes he produced a correlation between the mass of test ...
Oct 24, 2018 To calculate the operating work index of a circuit, you must measure four things P The power draw of the mill. This is usually calculated from the input leads to the motor, then multiplied by ...
Note that the ball mill operating work index is applied only on the portion that needs the additional grinding Q2, which renders to the AGSAG mill the credit for the fraction of the material that had been already ground to final product Q1. To calculate the operating work
So there is nothing wrong with your calculation, and the variation between the laboratory test and your observation of the operating crusher is within the normal range of variation for this calculation. It appears normal to me -- this is a noisy test, unfortunately. Hope that helps. Please let me know if you have any other question.
Crusher operating work asindex calculation atmandu. crusher work index tests crusher work index tests operating crusher is within the normal range of variation for this calculation crushing crusher work index wordreference forums 20181031 crusher work r wikipediaeach crusher is designed to work with a certain maximum size of raw material and often delivers its output to a screening machine
To calculate the average total cost per hour, divide the annual total cost by the number of total hours that the machine is used. Evaluating Alternatives to Machine Ownership For some machinery investment decisions, machinery own-ership and operating cost are calculated for comparisons to the current custom rate. If the capital invested in a ...
work index, capacity and the reduction ratio. Adopting Gupta and Yan 5 the power is given by, P Q.R d.w i where Q crushing capacity, Rd reduction ratio x 1 x 2 and wi work index. In this work Q .356 thr and x 1 7.5mm. A roll gap of 5mm had already
Oct 01, 2009 The operational part of the cone crusher is the crushing chamber, which consists of a mantle and a concave liner. As shown in Fig. 1, the axis of the mantle intersects the axis of the crushing chamber at point O, which is the pivot point.The angle between the two axes is , which is the eccentric angle.During operation of the crusher, the mantle moves around the axis of the crushing chamber.
The Bond work index is regarded as one of the crushing resistance it can therefore be presumed that the Bond work index is correlated to the mechanical properties of materials 4. Literature review on impact crusher performance in relation to machine configuration and operational conditions, by experimental work and mathematical
d1 and d2 are parameters that are characteristic of the crusher. They are determined primarily by the setting of the crusher. Data from operating crusher machines indicate that both d1 and d2 are proportional to the closed side setting. d1 is the smallest size particle that can be retained in the crushing zone during the opening phase of the cycle.
comminution plants designing. Determining the Bond work index value is quite complicated, time-consuming and requires trained operating personnel and therefore is subjected to errors. A quick method for the Bond work index approximate value determination, which is based on the first order grinding kinetics, is presented in this paper.
THE EFFECT OF BALL MILL OPERATING PARAMETERS . New crack tip length produced during breakage bond developed the well known bond work index which is an indicator of a materials resistance to crushing and grinding each of these theories was useful in the design and scale up of ball mill operations, however they told little of the expected size distributions, and most
Jan 01, 2016 Calculate the required crusher set to satisfy the crusher throughput. 5.12. A long shaft suspended spindle gyratory crusher 12.7 cm 127 cm was commissioned to crush limestone with a work index of 13.2 kWht. The crusher was adjusted to a throw of 0.7 cm and the set at 2.54 cm. The average size distribution was
Jan 01, 2016 The closed set of an operating jaw crusher was 125 mm. A continuous stream of ore was fed at the rate of 30 th. On an average, 10 of the ore was less than the set. The F 80 was 410 mm in size. The crusher was initially operated at 200 rpm at a reduction ratio of 14, but the toggle speed was to be increased. Calculate 1.
A Cone Crusher is a compression type of machine that reduces material by squeezing or compressing the feed material between a moving piece of steel and a stationary piece of steel. Final sizing and reduction is determined by the closed side setting or the gap between the two crushing members at the lowest point. As the wedge or eccentric rotates to cause the compression within the chamber, the ...
The Bond Low-Energy Impact test can be used to determine the Crusher Work index CWi, also known as the Impact Work Index. The test determines the impact energy at which a specimen fails and allows approximation of net power requirements for sizing crushers. The open and closed sized settings for given product sizes can also be determined.
crusher,Jaw crusher and Impact crusher. Our objective is to design various components of an Impact crusher like drive mechanism, shaft, rotor ,hammers, casing ,feed and discharge mechanism which will be useful in minimizing weight, cost and maximizing the capacity. Impact crushers they involve the use of impact rather than pressure to crush
Cone crusher basics in 4 minutes. This is the starting point for understanding how cone crushers work and how they can make your mine or quarry more productive. Elsewhere on the site you can find detailed information about all aspects of crushing and screening, but to make sense of these it helps to understand the basics of cone crushing.
Jun 16, 2015 Sizing a crusher can be done reliably calculated thanks to the ImpactCrushing Work Index and the testwork research done by Fred Chester Bond and his 1952 paper. According to Bonds Third Theory of Comminution, the workenergy input is proportional to the new crack tip length created during particle breakage and equivalent to the work represented by the product the feed.
rod mill work index has not been de ned as yet. The ball mill work index is con rmed at 16 kWht. The operating work index, though, is in the range of 21 kWht to 25 kWht showing high inef ciency. This raises the point that, in some cases, the Bond EF4 oversize factor calculation is
150 50 mm is pre-crushed using an HP 700 cone crusher. Production increase and operating cost decreased. Kidston Mine. All primary crusher ore is pre -screened to remove fines. All 50 mm oversize is crushed at maximum reduction ratio to deliver maximum fines. Proved effective in boosting milling productivity and lowering operating cost.
Operating Modes are used in a simulation to compare how the same simulation will run with different equipment settings, such as changing Material type, feed gradation or feed rate Crusher settings or output gradations Screen settings or calculation methods Material flow direction with splitters, flop or finger gates Running with or without water on screens Water rates on wash equipment ...