How Does Powder Processing Work?

Powder processing turns dry material into fine powder, and a powder crusher does the work. Grains become flour, dried pepper becomes spice and dried cassava becomes cassava flour. Here is how it happens, step by step.

What is a powder crusher?

A powder crusher breaks dry material into small particles using very fast spinning parts. It is different from a flour roller mill, which uses slow rolls.

The parts spin at thousands of revolutions a minute. They hit the material again and again until it is small enough to leave the machine.

The speed is what makes it fast. Our largest model, the 9FC-290 Automatic Powder Crusher, spins at 4,000 revolutions a minute and grinds up to 1,000 kg an hour. At that rate, it fills a 50 kg bag of powder in under 3 minutes.

How does powder processing work, step by step?

1. Load the material. Dry material goes into the feed inlet. It needs a steady feed, from a hopper or by hand at regular intervals.
2. It enters the grinding chamber. Fast-spinning hammers, blades or discs hit it immediately.
3. It is ground by impact. Each piece is struck many times and also knocks against the chamber walls.
4. The screen decides the fineness. Only particles small enough to pass through the screen can leave. Bigger pieces stay and keep being ground.
5. The powder is discharged. It flows out of the outlet into a bag, bin or conveyor.
6. Dust is collected. Fine grinding makes airborne dust, so a cyclone or bag filter helps capture it.

A finer screen gives finer powder but slightly slower output. A coarser screen is faster.

The screen wears down over time, because fine grinding is hard on it, so plan to replace it. It also gives you control: change the screen and you change the fineness of the powder.

What can you process?

Dry materials only. These include:

• Grains such as corn, wheat, sorghum and millet
• Dried spices such as pepper, chilli and coriander
• Dried herbs and vegetables
• Dried cassava and yam, for flour
• Dry groundnuts and soybeans
• Dried fish
• Dry charcoal, to make briquette feedstock

Wet or damp material clogs the screen and slows grinding. Stones and metal can damage the machine, so clean the material first.

One machine can serve several product lines, so a single crusher can grind your grain, your spices and your dried cassava. If your material isn’t on the list, ask us before you order and we will confirm it will work.

Which powder crusher should you choose?

We supply three models:

9FC-290 automatic             1,000 kg/hr 380V three-phase

The first two run on standard 220V power. The 9FC-290 needs three-phase power and is the one for high volume.

The cast iron model suits small workshops, home-based processing and small spice grinding. The 400 kg/hr automatic suits small commercial operations. The 9FC-290 is compact for its output. At 120 kg and under a metre long, it fits in a small processing room.

How do you keep it running well?

• Clean powder out of the chamber and screen after each session.
• Check the screen for holes. A damaged screen lets coarse pieces through.
• Check the grinding parts for wear. Replace them when output gets coarser.
• Tighten bolts, because the vibration loosens them.
• Keep powder off the motor vents.

Before the first start-up of the 9FC-290, have an electrician fit the right circuit protection and check that the motor spins the correct way. Secure the machine to the floor, ideally on anti-vibration mounts, because it shakes at high speed.

Fine powder is also a fire risk, so keep the room ventilated and clean during and after powder processing.

Ready to start powder processing?

Send a message to the Brandsquare team on brandsquare.shop. Tell us what you want to grind, how much you want to produce each day and what power you have, and we will recommend the right model.