When looking to protect your equipment against a dust explosion, it is critical that you know the Kst value of your material. Kst, is the dust deflagration index, and it measures the relative explosion severity compared to other dusts. This is a relative index, however, and any material with a Kst value greater than zero is considered to be at risk of an explosion. In fact, sugar has a relatively low Kst value, but was the fuel for for a massive explosion in 2008 that claimed the lives of 14 workers1.
Air Classification can separate materials across particle sizes that are too fine to screen, and can improve the efficiency of mills.
When are air classifiers used?
Air Classifiers are normally used when the particle size that needs to be separated is too fine to screen. The air classified product can be the granular Coarse discharge with very little Fines/Dust or the Fines discharge with very little Coarse/Grit. Air Classifiers eliminate the blinding and breakage issues associated with screens.
How dry does the feed need to be?
In order to effectively remove fine powders, the surface moisture of the feed must be very low, less than 1 – 2% is best, but some fines can be removed even at 2.5-3%.
For more than 40 years, Schenck AccuRate has been leading the industry in manufacturing and supplying superior volumetric and gravimetric feeders, weighfeeders, solids flow meters, bulk bag discharging systems, and vibratory feeders to a wide variety of markets throughout the world.
No matter what your application Schenck AccuRate can provide an appropriate feeder for the job. Why not contact us and speak with one of our sales engineers? They will recommend the right feeder for the job.
