Vibratory

Vibrators Vibratory atomizer Vibrio parahaemolyticus Vicalloy Vicalloy 1 Vicalloy II Vicalloys... 

Cmshed stone is conveyed by a mbber-belt conveyor and bucket elevator. Fine stone and dust are conveyed by enclosed screw conveyors, air slides, or pneumatic air systems into storage bins and tank tmcks for shipment. For screening, changeable vibratory screens predominate for all sizes from 23 cm to 0.074 mm (200 mesh). Most stone is stored uncovered on the ground in conical stockpiles, suppHed by radial belt conveyors. Such a conveyor can maintain four stockpiles of different sized stone. Large commercial plants typically stockpile stone in 10 sizes ... 

The free flow of a powder is necessary for automatically filled compacting dies. Powders having low flow rates need vibratory filling in order to overcome friction. Powders that do not flow at all can be used only for manual filling of the die cavity. 

Vibr toiy Consolidation. Powders are vibrated in a mold or other container in which they will be sintered, or in a metal container that will be used for extmsion or other metalworking process (31). Vibratory consoHdation produces packings of UO2 particles up to 95% of theoretical density. 

Volumetric Feeders. Examples of volumetric feeders are screws, belts, rotary valves, louvered, and vibratory. 

Vihra.toryPa.ri Feeders. Vibratory pan devices act much in the same way as louvered feeders in that they can feed material gendy and accurately. Unfortunately, they are limited primarily to appHcations involving round or square outlets. If a long rectangular outlet is used, the feeder must operate across the short dimension of the slot. 

The binder metal, cobalt or nickel, is obtained as very fine powder and is blended with the carbide powders in ball mills, vibratory mills, or attritors... 

Vibratory Compaction. Vibratory compaction (38,53) provides a means of forming irregular shape compacts from ungranulated powders. Under agitation, a powder bed tends to rearrange to a configuration of closest packiag. The ampHtude and frequency of vibration required for compaction are dependent on the size and size distribution of the particles present, and the size of the compact, and are determined experimentally. 

G. D. Dumbaugh, "A Comparative Review of Vibratory Drives for Bulk SoHds Handling Systems," Proceedings of the 10th Powder andBulk Solids Conference, Chicago, May 1985, pp. 425—470. 

Vibratory devices which constantly agitate the solids bed maintain a relatively constant value for such that... 

Vibratory-Conveyor Devices Figure 11-62 shows the various adaptations of vibratoiy material-handling equipment for indirect... 

The heavy-duty jacketed type (Fig. ll-62a) is a special custom-built adaptation of a heavy-duty vibratory conveyor shown in Fig. 11-60. Its apphcation is continuously to cool the crushed materi [from about 177°C (350°F)] produced by the vibratoiy-type caster of Fig. 11-53. It does not have the liqmd dam and is made in longer lengths that employ L, switchback, and S arrangements on one floor. The capacity rate is 27,200 to 31,700 kg/h (30 to 35 tons/h) with heat-transfer coefficients in the order of 142 to 170 W/(m °C) [25 to 30 Btii/(h ft °F)]. For heating or drying applications, it employs steam to 414 kPa (60 IbFin ). 

FIG. 11-62 Vibratory-conveyor adaptations as indirect heat-transfer equipment, a) Heavy-duty jacketed for bqiiid coolant or high-pressure steam, (h) Jacketed for coolant spraying, (c) Light-duty jacketed construction, (d) Jacketed for air or steam in tiered arrangement, (e) Jacketed for air or steam with Mix-R-Step surface, Coutiesy of Jeffrey Mfg. Co.)... 

L. Vibrational conveyance. This is referred as the vibratory centrifuge. A relatively bign frequency force is superimposed on the rotating assembly. This can be either in-line with the axis of rotation or torsional, around the drivesbaft. In either case, the cake under inertial force from the vibration is partly fluidized and propelled down the screen under a somewhat steady pace toward the large end, where it is discharged. 

Tumblei with agglomerate breaker See Sec. 20 Tumbling Mills, for ball mill, rod mill, and vibratory pebble mill which will accomplish mixing along with size reduction. 

Twin shell Vibratory pehhle mill tiirretf Vertical screw planetary types Cage mill Screw feeders... 

A number of less expensive sieve shakers are on the market, such as the Dynamic, by Soiltest Inc., Chicago the Cenco-Meinzer, by Central Scientific Co., Chicago the Tyler portable, by W. S. Tyler, Inc., Mentor, Ohio and also a number of electromagnetic vibratory shakers. The latter should be used only when strict comparability with other tests is not required, since it is difficult to be sure that identical intensity of vibration was present in the tests being compared. 

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