Primary crushing with jaw crushers. In terms of the size of the feed opening, the client gets a better return on investment when the primary crusher is a jaw crusher. ... Primary crushing with gyratory crushers. ... gives constant feed curve and recrushing of flaky product. In secondary stages closed circuit calibrates feed to tertiaries. Flow ...

Still using the 32 x 54 Jaw Crusher example, the top size of the feed entering the crushing chamber has to follow the F80 rule that 80% of the top size feed material is smaller than the gape opening. Using the F80 rule with the 32 x 54 Jaw Crusher, the 32" gape opening equals a 26" top sized feed, and with the 6:1 ratio of reduction, the ...

Detail descriptions of designs are given of large gyratory crushers that are used as primary crushers to reduce the size of large run-of-mine ore pieces to acceptable sizes. ... and curved screens are explained and discussed mathematically so that correct estimates of over-flow and under-flow products, grades and concentrations can be obtained. ...

The crusher motor size is determined using Bond's crusher work index. The relation used for calculating the approximate unit power consumption is Fig. 25.3.1.5. Typical crusher-product size-distribution curves for open-side discharge over 7½ in. (190 mm). Con-version factor: 1 in. = 25.4 mm. (25.3.1.1) where W is specific power required in ...

At the turn of the century the largest Gates crusher, the No. 9, had a receiving opening of 21 x 48 in. with a three-arm spider and a 21 x 80-in. opening with a two-arm spider. The …

The operation data record of the existing jaw gyratory crushers type BK 63-75 in Australia shows in comparable ore bodies a specific power draw of approx. 0,3 kWh/t, whereas the ERC ® 25-25 has shown a significantly lower power consumption with an average of approx.0,15 kWh/t throughout the test. Product size

To optimize the crushing chamber of the gyratory crusher, the discrete element method (DEM) is used to explore the influence of the concave curve height, concave curve radius, eccentric angle, and mantle shaft speed on the performance of the crushing chamber in this paper, here, the DEM analysis model of iron ore particle is …

For the development of the models, typical product size-distributions of gyratory crushers were used. Various curves from two sources referred to "scalped" …

Just a quick note, crusher product will depending on the crusher feed, if you are using run of mine feed and can economically remove the fines it is something to consider, especially if they are prone to packing, fines will consume power without significant particle size reduction. if you are using cone or short heads have them choke fed for optimum …

These are the size of the feed opening (in inches) and the diameter of the mantle at its base (in inches). A 60″~x~89″ crusher would have an opening dimension of 60 inches (152 cm) and a Effect of Feed Rock Size Distribution on Crusher Performance, Effect of Feed Rock Size Distribution on Crusher Performance.

1. Crusher capacity calculated based on a feed material bulk density of 1.6 metric t/m³. Actual values depend on feed material characteristics and crusher configuration. All data …

REFERENCE III Product Size. This can be determined with reasonable accuracy from the crusher product curves given on here. The Following Example Illustrates the Application of the Above Calculations to a Specific Problem: A crushed stone producer desires a primary crusher to handle the product from a 3-yard shovel at an …

Gyratory and jaw crushers are always rated at certain open-side or close-side discharge settings. In order that we may select the particular curve, of a group of curves, which will most nearly represent the product of a crusher having any given discharge setting, it is important to know approximately what …

A grid chart or curve for the selected crusher shows that, for a 2½-in. setting, 54% of the material will pass a 1½-in. screen, or 46% will be retained (this is like Jaw Crusher capacity table above where 48% passes a 1½ in. screen). ... Screen Analysis of Product from Jaw Crusher, Percent Passing Screen Opening. Product. Size (in ...

between the input data in the primary crushing phase (gap size (mm), feed size distribution, throughput (t/hr) and ore type) with the output data (product size distribution and power draw). The effect that changing the gap size has on the product size distribution was investigated for the gyratory crusher using the software package JKSimMet.

19 rowsProduct. Size (in.) Closed Side Setting of …

Pothina et al. (2007) developed an analytical model for energy consumption of gyratory crushers by using CSS and feed size variations. However, the feed fragmentation in this model is based on the ...

global website -

Products. Stationary crushers and screens. Stationary cone crushers ... ensuring consistent product size. Our Tank Instrument Monitoring System (TIMS) provides real-time monitoring of the crusher lubrication system to ensure it functions optimally. ... CG810i Gyratory crusher: 128 (141) 1,067 (42) 1,300-2,700 (1,430 - 2,970) CG820i Gyratory ...

Anyone have a PSD predictive tool to predict expected product PSDs from double-roller crushers, Jaw and Gyratory crushers if you entered the input PSD ranges. ... the crusher gap is at least related to the product size P80. The following formula: CSS = 1.25*P80 - 5.625 ... You can develop these from manufacturer crusher curves, at known CSS/OSS ...

curve 1 above. 3.4 Feed material: ... The gyratory crushers are robust crushers with m odern features. ... materials are reliably crushed in 2 or 3 stag es down to the required product size. 10.

Broad product range Feeders – a wide range of heavy duty feeders designed to absorb impact, meter material to the crusher and scalp out fi nes. Primary gyratory crushers – ideally suited to all high-capacity primary hard rock crushing applications. Jaw crushers – we have more installed jaw crushers than anyone in the world. The lead-

A primary crusher is designed to receive run-on-mine (ROM) rocks directly from the mines. Gyratory crushers typically crush to reduce the size of aggregate to a maximum of about one-tenth of its original size. Gyratory crushers are always installed vertically orientated. A gyratory crusher's size is classified by:

Contribute to brblmd/sbm development by creating an account on GitHub.

Cone crushers have gained such wide acceptance that they may be regarded as standard in the intermediate-range size-reducing machines. A schematic diagram of a cone crusher is shown in Fig. 4.6 A.The drive is similar to that of a gyratory crusher. The inner cone or 'crushing head' is supported by the tapered concentric spindle, which is rotated by the …

goods and obtain the desired particle size distribution curve, the crusher is, in the method according to the invention, be operated with brief periods of alternatingly ... The gyratory crusher shown in Fig. 1 comprises a shaft 1 which is eccentrically mounted at the lower end 2. At the upper end, the shaft carries a crushing head 3.

Crusher Product Gradation Charts. Aggregates required for a given job are generally specified by a full set of gradation limits and other relevant properties of the material. When rock is crushed, the product includes material of the size of the crusher setting, some slightly larger and the rest of the material smaller than the crusher setting.

Figure 12.7(a) is an example of a gyratory crusher. They are used on large hard-core and mineral crushing operations and are available in sizes up to 1000 HP. Very large lumps are often pre-crushed before being fed to a gyratory crusher. Gyratory crushers are more suited to clabby feeds and make a rounded product. Download : …

The GC series gyratory crusher is an advanced crusher at present, suitable for the primary crushing of various rocks and ores, features as follows: large capacity, high crushing efficiency, larger reduction ratio, consistent product size, lower consumption, etc, fit for the application of larger capacity. When OSS at 150mm, the pass through ...

The Pendulum Tester / Bond Impact Crushing Work Index Tester. Working principle Crushing by impact. 76 mm maximum feed size. Test repetition: At least 10, preferably 20 test runs. The Bond Crushing Work …