SW Mills
The 5-in-1 Machine That Cuts Process Time As Much as 90%
Eliminates pre-mixing, re-formulation, lost time on cleanup, excessive maintenance.
Designed to disperse "hard grinding" pigments in poor wetting vehicles.6 to 200 gallon paste produces 15 to 500 gallon finished batches in an hour.
Produces micron size dispersions, the result of high energy, high velocity input to miniature balls or beads plus the laminar flow created by the high speed impeller(s).
Processing of over 10,000,000 gallons of product has proved the efficiency of the SWMill®.Uses Existing FormulasWater or oil base formulas for sandmills and ball mills can be used. No modification is necessary. A recommended operating viscosity of from 50 to 115 KU [1200 to 2600 Centipoise] is advantageous for maximum vessel, impeller and media life. Recommended parameters for new formulations specifically designed for the SWMill® are included in the operating manual.Does the Pre-MixingVehicle and pigment are placed directly into the top of the SW Mill®, in the same manner as when using separate pre-mix equipment. The mill's rotor(s) premixes at speeds comparable to the peripheral speeds of dissolvers, developing a deep vortex of product and grinding media for efficient mixing. Grinding begins simultaneously.
It's Fast
Approximate ultimate dispersion times, regardless of batch size are:
-
Fast grinding pigments
[ferrites, oxides, etc.] ............................... 20 Minutes
Medium hard grinding pigments
[chrome yellows, greens, etc.] .................... 30 Minutes
Hard grinding pigments
[P.C. blues, greens, blacks, maroons, etc.] .... 45 Minutes
"Let down" up to vessel capacity and tinting operations can begin immediately after paste is dispersed to required fineness. No need to discharge the batch or adjust the drive.
Cleans Up Easy and Fast
Simply add solvent proportional to mill size, operate mill for a short interval, and discharge in normal manner. Quick visual inspection of interior shows mill is clean.
Requires Little Maintenance
No gears to wear. No pumps to become clogged. No oil to check or replenish. No packing glands or rotary seals to wear or leak. All that's required is a periodic check of the single belt set and periodic lubrication of two sealed bearings.
Replaceable parts subject to abrasion are hardened alloy steel (except protected screen) for long life. All replaceable parts, including the vessel, can be field installed by customer's personnel. Replacement parts are stocked by Emco for quick shipment.
SWMill⊃ Specifications
| Mill Size | Total Volume (gallons) |
Working Capacity (gallons) |
Paste (gallons) |
HP STD |
Width | Length | Height | Approx Height |
| Approx Height | ||||||||
| 25G | 62 | 37 | 25 | 15 | 36" | 71" | 67" | 3,100 lbs. |
| 50G | 125 | 75 | 50 | 25 | 36" | 71" | 76" | 3,700 lbs. |
| 100G | 250 | 150 | 100 | 40 | 52" | 95" | 89" | 6,500 lbs. |
| 200G | 500 | 300 | 200 | 75 | 52" | 101" | 116" | 7,100 lbs |
Optional Equipment
HC-250 Rotors extend the life of rotors up to 10 times. Manufactured from chilled white iron so hard that machining cannot be accomplished using tungsten carbide cutting tools. Rotors are precision ground with abrasives to finished size.
Wear resistant ceramic tile. Special tiles are bonded to the vessel wall in the wear zone. Tile replacement can be accomplished in the field with customer's personnel, extending vessel life indefinitely. [Rotor(s) removed to reveal tile.]
Ammeters are mounted in explosion-proof enclosures with large glass window for easy viewing. Installation includes explosion-proof connections and transformer. Internal wiring is connected completely when starter is also ordered.
Motor Starters are contained in explosion-proof enclosure in combination with circuit breaker disconnect. Starters are full voltage, across the line, magnetic type with overload protection for all lines. A separate start-stop station is provided. All components are mounted and completely wired ready to receive customer's primary power from the plant's system.
Other Options:
Automatic discharge valve actuators - Multiple station controls - Hour meters - Elevating sub-bases - Platforms and hand rails - Sealed cover
Temperature control devices are available to automatically meter cooling or heating medium through the mill jacket to control batch temperature. Temperature devices are either explosion-proof electrical or nonelectrical mechanical units, safe in hazardous atmospheres.