Fluidized bed Mixers

FLUIDIZED BED MIXERSMixes low-to medium-density bulk materials, including liquid additions, in 30 seconds (typical) minimizing degradation of friable materials.The Munson Fluidized Bed Mixer is among the fastest of all mixers, with cycle times of 10 seconds to two minutes, with 30 seconds typical, yielding a ~5% CV (coefficient of variability).Flat, angular paddles with overlapping paths effectively sweep material from two parallel u-shaped troughs toward the center and upward, causing it to become airborne in a “fluidized zone” above the longitudinal centerline of the mixing chamber, where discreet particles of batch ingredients readily intersperse, regardless of disparities in particle size, shape or bulk density.The fluidized zone is also an ideal location in which to spray high- or low-viscosity liquids, which disperse readily and can be added in relatively high volumes while maintaining free-flowing characteristics of the batch.This fluidized mixing action also creates less shear than with other agitated blenders, which, together with extremely short mixing times, results in less product degradation.The Munson Fluidized Mixer is configured with two counter-rotating shafts turning paddle agitators rapidly within two, parallel U-shaped troughs.Munson Fluidized Bed Mixers are offered in capacities from 0.21 to 280 cu ft (5.90 liters to 8.01 cu m). Model MF-5-SS 4.24 cu ft (0.120 cu m) shown.The fluidized bed mixer also discharges more rapidly, through its full-length, drop-bottom gates, allowing material to drop from the machine rapidly.And whereas ribbon, paddle and plow blenders leave a pronounced “heel” of material in the trough following discharge, the fluidized bed mixer evacuates a much greater percentage of material, reducing the need to manually remove — and waste — material between changeovers. Wash down is nonetheless time-consuming due to the need to clean four shaft seals, gaskets sealing drop-bottom gates, and paddle agitators.Fluidized bed mixers are also more costly than ribbon, paddle or plow blenders initially, due in part to the greater number of components, and to the higher-powered motor needed to drive two paddle agitators through stationary material at start up, and do so against high gear ratios required for high shaft speeds.Munson Fluidized Bed Mixers are therefore recommended over Munson ribbon, paddle or plow blenders, when mixing low- to medium-density materials (=50 lbs/ft3 or =800 kg/m3) ranging from powders to pellets — particularly friable materials — with or without liquid additions, in applications requiring short cycle times, relatively gentle product handling and infrequent wash downs.FEATURESn Typical cycle times of 10 seconds to two minutes, with 30 seconds normaln High production capacityn Mixes low- to medium-density materials (=50 lbs/ft3 or =800 kg/m3) from powders to pelletsn ?Low friction plus short mixing times minimize degradation of friable materialsn Gently reduces soft agglomeratesn Insignificant heat generationn Particles of batch ingredients (including fibers) intersperse readily, regardless of disparities in particle size, shape or bulk densityn Available with spray nozzles for liquid additionsn Low to high volumes of low to high viscosity liquids disperse readily throughout the batchn Discharges rapidly through full-length, pneumatically actuated drop-bottom gates (Bombay Doors)n No segregation upon dischargen Evacuates a greater percentage of material than ribbon, paddle and plow blenders, reducing wasten Available in models for batch or continuous operationn Equally efficient filled at 100 percent down to 50 percent of rated capacity, depending on materialn Large top covers provide easy access for cleaning, inspection Available with heating or cooling jacketsn Standard controls for manual operation with interface for remote control (automated control packages available)OPTIONSn Internal spray-line for the introduction of liquids for coating, coloring or agglomerationn Standard clean welds available as well as all internal welds with minimum 0.25 in. (6.4 mm) radii ground and polished from 80 grit up to 240 grit to prevent material entrapmentn Construction and finishes to USDA, pharmaceutical, and other sanitary or industrial standards including #304/304L or #316/316L stainless steel with #2B, #4, #6 or #7 surface finishes, with optional electro polishing. Carbon steel construction with a variety of durable finishes also available.n Available to sanitary standardsn Available with CIP nozzlesn Complete stainless steel construction including frame and drive guardsn Extra large drop bottom gates available to minimize residue following dischargen Hoppers and platforms Wash-In-Place/Rinse-In-Place systemsn Extended legs or structurals as required per applicationn Mixer load cell mounts for precise control of batch ingredientsn Remote control (solenoid actuated) or manual-control of air-cylinder-actuated drop bottom gates. Easily incorporated into an automatic timer- or PLC-controlled systemn Control packages ranging from manual start/stop operation to remote, programmable operation of all mixer functions including soft startsSPECIFICATIONSModel Volume Motor-A Motor-B Motor-C Rotor Rotor Rotor cu. ft. Hp Hp Hp RPM Dia. in. ft/min (m3) (kW) (kW) (kW) (cm) (m/min)MF-.25 0.21 0.50 (0.0059) (0.37)MF-.75 0.71 1.5 95 10.24 255 (0.0201) (1.10) (26) (77.7)MF-2 2.12 4.0 67 14.57 256 (0.0600) (2.94) (37) (78.0)MF-5 4.24 5.4 54 18.11 256 (0.1200) (3.97) (46) (78.0)MF-7 7.1 5.4 7.4 46 21.65 261 (0.2010) (3.97) (5.44) (55) (79.6)MF-12 12.4 7.4 10 39 26.77 273 (0.3511) (5.44) (7.35) (68) (83.2)MF-18 17.7 10 15 36 29.53 278 (0.5012) (7.35) (11.03) (75) (84.7)MF-25 26.5 15 20 30 32 33.46 280 (0.7504) (11.03) (14.71) (22.06) (85) (85.3)MF-35 35 20 30 40 29.6 37.40 290 (0.9911) (14.71) (22.06) (29.42) (95) (88.3)MF-50 53 30 40 50 28 42.13 309 (1.50) (22.06) (29.42) (36.77) (107) (94.2)MF-70 71 40 50 60 27 46.85 331 (2.01) (29.42) (36.77) (44.13) (119) (100.9)MF-85 88 40 50 60 26.8 50.00 351 (2.49) (29.42) (36.77) (44.13) (127) (107.0)MF-125 127 50 60 74 26 57.87 394 (3.60) (36.77) (44.13) (54.43) (147) (120.1)MF-175 177 60 74 101 25.6 64.57 433 (5.01) (44.13) (54.43) (74.29) (164) (132.0)MF-210 212 74 101 121 25 68.11 446 (6.00) (54.43) (74.29) (89.0) (173) (135.9)MF-280 283 101 121 148 24.5 75.98 487 (8.01) (74.29) (89.0) (108.85) (193) (148.4)Technical data can be altered without prior notice. Given measurements and weights must not be used for engineering.Munson MACHineRy Co., inC.+1-315-797-0090usA: 1-800-944-6644inFo@MunsonMACHineRy.CoMWWW.MunsonMACHineRy.CoMReLATeD Munson eQuiPMenT: MIXERS: Rotary Batch, Vee-Cone, Ribbon, Paddle, Plow, Cylindrical Plow, Rotary Continuous, High Intensity.SIZE REDUCTION EQUIPMENT: Screen Classifying Cutters, Knife Cutters, Pin Mills, Attrition Mills, Hammer Mills, Lump Breakers, Shredders.Ask for detailed chart comparing fluidized Bed Mixer to five other bulk solid mixers, all manufactured by Munson or go to MunsonMachinery.com