Powder conveying selection
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I would like to ask the experts here: I currently have powder with a particle size of 30–40 mesh and a density of around 0.4. This powder needs to be lifted from 0 meters to 10 meters and then lowered back into a tank. What transfer method could be used to minimize dust generation? The scraper elevators we used before caused a lot of dust explosions and kept breaking down.
Dear sea friends: Is there no expert on this forum who knows about such equipment? I would be grateful for your advice!
Screw conveyors, series disc conveyors, etc. – ensure good sealing; for those with low speeds and dust at the discharge outlet, use negative pressure for suction. Pneumatic conveying is also a good option: it offers full sealing, requires less maintenance, and has a high degree of automation. The only downsides are higher energy consumption and higher initial investment, haha
A fan will do, but the flow rate won’t be very high
A screw conveyor might not work well; the vertical height is only 10 meters.
Negative pressure suction is better, as it produces less dust
Is this powder flammable? If so, what is its ignition point? It can be transported by pneumatic means; please ask the equipment manufacturer to conduct a small-scale test.
Negative pressure conveying: a Roots blower is used to generate the necessary power; air is drawn into the bag chamber filter and then blown back out. For backwashing, 100 psi of nitrogen is used, along with a gas collection tank, which improves the efficiency of backwashing. It’s important to choose the right type of filter bags, otherwise it will cause a lot of problems
You can also use chain links; neither method is very fast. It seems like you don’t want to use conveyors or something similar
A vacuum material conveyor should work; as mentioned above, special attention must be paid to the selection of filter bags to prevent materials from entering the fan.
Our company has experience in vacuum powder transportation; the equipment has been used in various Taiwanese-owned companies. The particle size of the powder is 1 um, and the production capacity is 1-2 T. If you are interested, please contact us via QQ: 42953517