roll speed and crusher feed size

the cone crusher is limited to a certain top size of material feed. Cone crushers use approximately one horsepower per ton per hour making a 1in product. Typically, around 15–20% of oversized product is recirculated for re-crushing to size. Roll crushers – Roll crushers are another form of compression crusher that can be used to crush hard

It is a wisdom choice of stone processing in mining industry. Op Our mobile impact crusher can produce high-quality materials and excellent shape for secondary and tertiary crushing, which is quite competitive in the market. In addition, it takes advantages of large capacity, wide range of …

Crushers : Smooth Roll Crushers Heavy smooth faced metal rolls turning on parallel horizontal are working elements of smooth roll crusher. Particles of feed caught between the rolls are broken in compression and drop out below. The rolls turn towards each other at the same speed. They have relatively narrow faces (300-917mm)

1) For hard material''s crushing, the reduction ratio should not exceed 4., 2) Maximum feed size determines the required roll diameter. ., 3) Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced, 4) …

It can reduce most rock-like materials of 0.5in (13mm) feed size to minus No. 10 (2mm) at a capacity up to 8,000lbs (3,629kg) per hour. Operates at 60Hz. Select preferred voltage of 230V or 460V when ordering. LC-14F Marcy® Double Roll Crusher model has the same features and capabilities as the LC-14, but operates at 50Hz.

Roll crushers have a theoretical MAXIMUM reduction ratio of 4:1. If a 2 inch particle is fed to the roll crusher the absolute smallest size one could expect from the crusher is 1/2 inch. Roll crushers will only crush material down to a minimum particle size of about 10 Mesh (2 mm). A roll crusher crushes using compression, with two rolls ...

 · Gyratory crusher: feed diameter 0.75 to 1.5m; reduction ratio 5:1 to 10:1, usually 8:1; capacity 140 to 1000 kg/s; Mohs hardness <9. More suitable for slabby feeds than jaw crusher. [reduction by compression]. Roll crusher: feed diameter 1 cm: reduction ratio 5:1 to 10:1; capacity 0.3 to 20 kg/s: Mohs hardness < 7.5. Suitable for softer ...

(M/sec) with roll speed differentials. Roll speed differentials simply means one roll turning faster than the other and is usually described in the form of a ratio, slow roll speed expressed as 1. For example, rolls operating at 1.5:1 differential with a fast roll speed of 1,000 RPM would have the slow roll …

The Single Roll Crusher, with its 6:1 ratio of reduction, is ideal for reducing large feed lumps to a medium product size while producing a considerably lower percentage of fines. The minimum product sizing of a Single Roll Crusher is generally limited to 2-3". The crushing is carried out between the full width of the extra-long curved crushing plate and the low-speed crushing roll. The ...

Fig. 6.4 is a typical set up where ore crushed in primary and secondary crushers are further reduced in size by a rough roll crusher in open circuit followed by finer size reduction in a closed circuit by roll crusher. Such circuits are chosen as the feed size to standard roll crushers …

clude items such as speed, throw, setting. angle between the jaws, size and nature of the material. Rose and English ... for the effect of feed size on jaw crusher capacity Capacity, th-I Size of Rose and feed, m Hersam, W, English, WR WaIWR 0.076 - 0.102a 0.271 0.368 0.74

Roll tram and parallelism are assured by the robust construction. The Series 900/999 Roller Mill is equipped with solid rolls for long life and smooth operations. This roller mill delivers uniform grinding and particle size reduction with less maintenance and no aspiration required. 9" roll diameter. Precise, repeatable hand wheel adjustment.

Figure 6.4 is a typical set-up where ores crushed in primary and secondary crushers are further reduced in size by a rough roll crusher in an open circuit followed by finer size reduction in a closed circuit by a roll crusher. Such circuits are chosen as the feed size to standard roll crushers …

Triple Roll Crushers. Triple Roll Crushers are ideal for producers who want to accomplish two stages of reduction in one pass. They can be used in coal, salt, coke, glass, and trona operations, among others. Triple Roll Crushers combine a Single Roll Crusher with a Double Roll Crusher to form a crusher that is capable of achieving a 6:1 reduction ratio in the primary stage and a 4:1 reduction ...

 · Assume that eight crushers; Gyratory (A 1), Double toggle jaw (A 2), Single toggle jaw (A 3), High speed roll (A 4), Low speed sizer (A 5), Impactor (A 6), Hammer mill (A 7) and Feeder breaker crushers (A 8) are evaluated by three studied mine experts, D 1, D 2 and D 3 against six criteria, capacity (C 1), feed size (C 2), product size (C 3 ...

1) Max. feed size depends on tooth configuration 2) Weight of the RollSizer without drive The throughput rate and motor power depend on the feed material, feed size, granulometric composition and required product size. The given data are intended as a guide for medium-hard limestone (fines content of 50% in the feed material)

CPC Double Roll Crusher Application. Coarse size reduction of hard and medium-hard material (lime stone, magnesia, salt, fertilizer, coal etc.) Throughput up to 2.500 mt/hr, depending on material characteristic and particle size; Feed material size up to 1.200 mm, product particle size from 10mm to 300mm possible, according customers demand

Suggested speeds are 50% to higher than the suggested speeds for cutting taps in similar applications. PIPE TAP SPEEDS should be between one-half and three-quarters of the speeds of taps of comparable diameter and pitch. Workpiece Material Brinell Hardness (BHN) Surface Speed (SFM) Low Carbon Steel – 1018, 12L12, 1108, 1213 ≤ 120 65

A typical application: fine crushing e.g. from 30 mm feed size to 5 mm product size, approx. 80% target particle size largely avoiding fine grain and dust; Crushing roll surface according to the material characteristics (smooth, machine cut grooves or built-up welded rips) Integration in semi-mobile plants possible; Mode of Operation

Roll Crusher Maximum Feed Size - riedel-zeller . Roll Crusher Maximum Feed Size. Figure 6.4 is a typical set-up where ores crushed in primary and secondary crushers are further reduced in size by a rough roll crusher in an open circuit followed by finer size reduction in a closed circuit by a roll crusher.

HFB – HAZEMAG Impact Roll Crusher Type Feed size up to [Inch] Throughput rate [t/h] Drive power of roll [HP] HHI 1515 40 x 55 550 - 2,000 200 - 700 HHI 1518 45 x 70 900 - 2,800 400 - 1,000 HHI 1521 45 x 85 1,100 - 3,300 700 - 1,000 HHI 1525 45 x 95 1,300 - 4,400 1,000

applications, the top size of a feed distribution can contain particles of up to about 70% greater than the operating gap. A High Pressure Grinding Roll produces a particle size distribution (PSD) that is wider, with more fines, than a tertiary crusher (e.g. cone crusher) would produce. The reason is that the compressive force not only

Single Roll Crushers When Accurate Size Reduction of Materials with ... * When selecting the belt, the size of the belt and its speed must be matched to the capacity of the crusher. In addition, the belt must be sized to handle occasions ... FEED OPENING E D OUTPUT OPENING C Product Size Control The clearance between the bottom lip

Quad Roll crushers are designed for larger feed sizes and high ratios of reduction at high capacities. The top stage of the Quad Roll crusher is essentially made up of a double roll crusher, which is designed with the appropriate diameter rolls and tooth configuration to readily grab the incoming feed …

 · A twin-roll crusher is selected, like those given in the Roll Crusher capacity Table above, to serve as the reduction crusher. The smallest, 24 x 16 roll crusher shown in the Roll Crusher capacity Table above has enough capacity with a setting of 1 in. but the maximum size feed will be too large, that is, the stage of reduction is not large enough.

Crusher Feed Size and Roll Diameter. ... For any given size of feed, the permissible speed is a direct function of the roll diameter. (C) For any combination of feed size and roll diameter, heavy-duty, high-spring-pressure rolls will stand higher speeds than will lighter rolls, provided that the angle of nip is not too great for the increased ...

The roll size of a roll crusher was 30.5 cm × 90.1 cm. Gypsum rock (S.G. = 2.7, bulk density = 1.7 t/m 3) is to be crushed. Determine 1. the set in order to crush at the rate of 12 t/h and 10 rpm speed of the rolls, 2. the ratio between capacity and peripheral speed if the set was 2.5 cm, 3. the nip angle when the crusher feed size is 10 cm,

Can accept very large feed size. Robust design and construction and slow speed operation ensures less fines, low power, low vibration, low operating cost. AVAILABLE Roll Dia Roll Width 650 mm - 1800 mm 600 mm - 2800 mm Higher Size can be supplied on request Feed Size Product Size Power Max 1500 mm Edge Length for Average 300 mm Product

3000 Series Roll Crushers. Roll diameter: 330 mm and 380 mm (13" and 15") Roll face length: 508 mm to 2030 mm (20" to 80") Shaft material: 4140 steel, Turned/Ground/Polished. Used for sizing feed materials up to 83 MPa (12,000 psi) compressive strength. Suggested Installation Drawing …

crushers, Ludowici screens or feeders, has continuously ... torque and low roll speeds with a unique tooth profile in the ABON equipment leads to a specified product with a minimum of fines creation. ... • ROM feed size up to 2,000 mm • Capabilities in excess of 12,000 mtph

The narrow particle size distribution is achieved by controlling a combination of variables including roll speed, roll gap, differential speed, feed rate and roll surface design. Roll Crusher 250.1 : Roll Crusher 250.2 : Roll Crusher 250.3 : Roll Crusher 350/400 : Roller Mill UW 300 : Roller Mill VWR 500 : Lab Roll Crusher LRC-250

Question is ⇒ Angle of nip of the crushing rolls does not depend upon the, Options are ⇒ (A) diameter of the rolls, (B) speed of the rolls, (C) product size, (D) feed size, (E), …

4 clination of side walls is adjustable to improve material feed and intake of larger feed lumps 5 most cases pre-screening is not necessary, as the fines contained in the final product can smoothly pass through the crushing tools 6.Low dust burden 7.Low specific wear rate due to slow circumferential speeds