Plant Apparatus
Spedic Classifier
Speidc Classifier is a forced vortex air classifier to sharply classify ultra fine powders. It incorporates a dispersion mechanism before classification and redispersion mechanism of coarse powders after classification, and has achieved high classification accuracy even in the sub-micron range with an ideal forced vortex air.
Principle
Materials are fed with air into the inlet and agglomerated particles are dispersed by the first and the second dispersion blades to enter to the classification zone. In the classification zone, by centrifugal force of the rotor and fluid drug force to the center, coarse powders go to the outside and fine powders go to the center with air. Fine powders are exhausted from the fine powder ring and collected by a cyclone or a bag filter. Once classified coarse powders are returned to the center by the compressed air from the inner circumference, again dispersed and classified, and then exhausted from the coarse powder ring. The filter also plays a roll of air-seal mechanism to the inner wall, which enables stable classification of highly adhesive powders. The classification blade II has a mechanism to reduce the pressure loss in the classification part and power consumption.
Application
- Ceramics(silicon nitride, silicon carbide, alumina, zirconia, etc.)
- Resin(polyethylene, polystyrene, polyester, etc.)
- Filler(calcium carbonate, white carbon, etc.)
- Pesticide, drug
- Others(metal powder, coal, diamond, graphite, cellulose)
Feature
- Classification point from sub-micron: 0.5-50μm
- Classification point can be easily changed only by changing the rotation number of rotor
- Classification accuracy(D75/D25) is very sharp; 1.2-1.8 due to the stable vortex flow of the redispersion mechanism and classification zone.
- Less abrasion of machine and very little contamination in products
- Same performance in small type to large type
- Assemble/disassemble is easy and suitable to classification of various types of powders
- Closed-circuit milling with Jet Mill (JOM、STJ) is possible.
Specification
| Model | SP-250 | SP-325 | SP-400 | SP-525 | SP-625 |
|---|---|---|---|---|---|
| Classification Point(μm) | 0.5～50 | 0.5～50 | 0.5～50 | 0.5～50 | 0.5～50 |
| Rotation(rpm) | 1500～8500 | 1000～7000 | 700～5000 | 500～4000 | 500～3500 |
| Motor(kw) | 1.5+2.0 | 2.2+5.5 | 3.7 | 5.5 | 11 |
| Air Volume(m3/min) | 2 | 4 | 6.5 | 15 | 25 |
| Pressure Loss(mmAq) | 300 | 300 | 300 | 300 | 400 |
| Process Amount(kg/hr) | 0.5～5 | 5～25 | 25～100 | 50～250 | 250～1000 |
| Compressed Air(m3/min) | 0.3 | 0.5 | 0.7 | 1 | 1.5 |
| Outline Dimensions(mm) | W1800×D500 ×H1470 |
W2560×D1300 ×H2500 |
W1100×D650 ×H1200 |
W1200×D700 ×H1250 |
W1200×D850 ×H1400 |