METSO MF MINING SCREENS TECHNICAL SPECIFICATION
The Multi-Flo is a free swinging, banana shaped and linear motion screen. Motion is provided by revolving eccentrics imparting both separating G-Force and the material travel force components. The screen is design assured using Finite Element Analysis (FEA), EN-1993-1-9:2005 (E). This is coupled with a robust, fabricated and "Huckbolted" construction monitored and controlled through Metso's ISO9001:2000 Quality accreditation. Welding in critical areas is minimized. The product incorporates design initiatives to facilitate site maintenance and servicing requirements, such as the use of bolted parts, replaceable wear linings (when supplied), selection of drive mechanisms to achieve performance and provide acceptable bearing life, and the availability of other optional improvements to suit particular application and site environment. The screen is designed for reliable operation in demanding applications such as mining or quarrying. The banana shape starts at 25º of inclination (feed end) and ends at 0º (discharge end) for wet applications and starts at 25º and ends at 15º for dry applications.
WIDTH HEIGHT METSO MULTI-FLO MINING SCREENS GENERAL INFORMATION LENGTH * For shipment dimensions consult next pages.
GENERAL INFORMATION Screen Model Size Quantity of Decks MF 2.4x7.3 DD 2.4m x 7.3m (8ft x 24ft) 2 (two) General Arrangement dwg N11485879 Side Plate Thickness Length 12 mm Main Dimensions with Default Options (excluding drive, dust encapsulation, shipping frame) 7800 mm (25 ft 14.6 in) Width Height (Operating position) 3366 mm (11 ft 0.9 in) 4970 mm (16 ft 7.5 in) Performance Data Stroke Nominal Speed Acceleration Selected Motor Power Motor Quantity 10 ~ 12 mm 820 rpm 4 ~ 5 g 55 kw (75 hp) 1 (one) Screen Slope 25º to 15º Vibrator Mechanism Model Description Quantity Bearing Type Bearing L10 life ML80 Box type with 2 shafts fixed, counterweights and oil lubricated 2 (two) Spherical Roller > 30000 hours Lubrication System Manufacter / Model Type of lubricant Oil Reservoir Capacity Exxon Mobil SHC630 or Similar Synthetic oil 7.0 Liters Interval between oil chages 1000 operating hours Oil note: Lubrication system described above applies only for ambient temperature from 10ºC to 35º. Conditions beyond these limits please contact Metso Minerals engineering. NOTE: All information in this specification are for reference only. Subject to alteration without prior notice.
GENERAL INFORMATION Drive Type V-belt manufacturer V-belt drive - indirect Goodyear / Gates Nº of belts / Size 6 / SPC-3750 Center to center sheaves (for 50Hz) Center to center sheaves (for 60Hz) Drive / driven sheave pit. diameter (for 50Hz) Drive / driven sheave pit. diameter (for 60Hz) 1227mm 1378mm 275mm / 485mm 275mm / 570mm Liners Feed box side liner Feed box bottom liner Side plate protection liner Discharge lip bottom liner 60SH A Rubber 50mm 60SH A Rubber 40mm 60SH A Rubber 50mm Blank panels Mass Live weight with cloths and liners, without drive Live weight without cloths, liners and drive Drive assembly mass without motor 19870 kg 17562 kg 630 kg Shipping and Handling data Total Shipping Weight Heaviest Item in Erection Heaviest Item in Maintenance Shipping Volume, L x W x H 21770kg 19870 kg Vibratory Mech - 1745 kg each 9.1 m x 3.4 m x 3.7 m NOTE: All information in this specification are for reference only. Subject to alteration without prior notice.
DESCRIPITION - BASIC UNIT Double Deck Banana Screen, assembled, shop tested and prepared for delivery each screen complete with the following components and features: ML80 Mechanism(s), one (1) heavy duty mechanism support beam, two (2) side plates, two (2) support frames (also named as "decks"), one (1) feed box, one (1) set spring support assembly, lifting lugs, handling cautions, safety decals, identification plates, full workshop test, lubricants for commissioning purposes only. FEED BOX WITH RUBBER LINERS LIFTING LUGS ML80 MECHANISM HEAVY DUTY MECHANISM SUPPORT BEAM SIDE PLATE ASSEMBLY SPRING BRACKET ASSEMBLY SUPPORT FRAMES
ML80 VIBRATING MECHANISM ML80 MECHANISM COUNTER WEIGHT ADJUSTMENT ML80 Mechanism with geared eccentric counterweights and oil lubricated, providing linear acceleration in the line of action in consideration of the screening application. The main characteristics are: Closed box; Easily and adjustable external counter weights; Oil tight mechanism sealed to prevent oil contamination and aiming maximum bearing life; High capacity long life spherical roller bearing; Double ends of drive shaft allow choice of right or left connection; Continuous oil splash lubrication for better cooling and less maintenance; Low noise precise synchronism gears; Allows the connection by heavy duty cardan shaft; Spare mechanism on hand in as new condition allow quick change and less down time. MECHANISM SUPPORT BEAM Mechanism support beam is fabricated from heavy sections and with machined bolted surfaces ensuring accurate alignment of the mechanisms.
SIDE PLATES Side plates are fully profiled, with huckbolted stiffeners and spring brackets, no welding. SUPPORT FRAME Support frame (deck): sloped from the feed to discharge end at angle decrements to suit the application, made from individually fabricated members with attached longitudinal deck support angles, designed to support the screen surface. The design of the support frame is without any diagonal type bracing, but consisted of rubber lining.
FEED BOX Feed box: facilitates even distribution of the feed material and fitted with liners providing a protected impact area prior to the start of the screening surface. SPRING SUPPORT ASSEMBLY Spring support assembly includes spring brackets (with ribs for easily springs removal), spring guides and helical springs.
OPTIONALS DUST CONTROL Three different levels of dust control are available: Snap on profile: Snap on profiles on top, bottom and frontal part of the screen. Snap on profile + stationary kit: Snap on profiles on top, bottom and frontal part of the screen. Rubber grip strips; Trellex dust sealing cloth for interface between vibrating and stationary parts Snap on profiles for stationary parts Totally sealed screen: Snap on profiles on top, bottom and frontal part of the screen. Rubber grip strips; Trellex dust sealing cloth for interface between vibrating and stationary parts Top frame structure (arches and snap on profiles) Trellex dust sealing cloth for top cover Snap on profiles for under chute (the under chute itself is not supplied).
OPTIONALS WASHING SYSTEM Washing on screen is used to remove undesirable material, mostly clay and extremely fine particles. It is also employed for the classification of fines and/or moist materials whose screening is very difficult without washing. FLEXIBLE HOSE (1 PER SPRAY BAR) SPRAY BAR VALVE (1 PER SPRAY BAR) FISH TAIL NOZZLES Options include: Washing on top deck only; Washing on bottom deck only; Washing on top and bottom deck; One or both decks only prepared to receive washing system. ISOLATION FRAME ISOLATION FRAME Metallic frame composed by profiles and fulfilled with concrete, supported by springs and limited with shock absorbers. SHO CK ABS ORB ER STEEL STRUCTURE FRAME SPRINGS
OPTIONALS TRAVEL TRUCK Travel truck (also referred to as Transfer car ) allows easy screen displacement* on rails for maintenance purposes. * drive for movement and necessary devices (hydraulic jack, etc.) are not included. SCREENING MEDIA WITH LONGITUDINAL BARS AND SIDE PROTECTION LINER SIDE PROTECTION LINER LONGITUDINAL BARS
OPTIONALS CROSS MEMBERS WITH URETHANE COATING * Coating standard thickness - 3mm SIDE PLATE LINERS Trellex rubber liners (glued) or Urethane coating (3mm thickness) are available to protect the side plate on the areas between decks and side protection liners. Trellex rubber liners Urethane coating (3mm thickness) FEED BOX LINERS 9.5mm 12.5mm AR400 steel liners Other Feed Box Liners are available under price request.
OPTIONALS SHIPPING FRAME Shipping frame PACKING FOR SHIPMENT - SEA FREIGHT Small components like drive are packaged in box (wood made pallets) as per ISPM Publication Nº15. They are protected against corrosion during sea transportation. DOCUMENTATION Documentations available in English, Spanish or other language under request.
WORKSHOP TEST FULL WORKSHOP TEST INCLUDES: 4 hour no-load operation Critical frequency analysis Amplitude / orbital measurement Mechanism operation Screen body integrity check