Screw conveyor for abrasive powder

Screw conveyor for abrasive powder designed, manufactured and delivered to the process industry.

How can you improve the lifetime of the screw conveyor with abrasive material?

1. Use an abrasive steel quality for the screw flights and the casing. In this case duplex steel has been used for the housing to increase the life time
2. Ensure a low filling degree of the screw conveyor
3. Reduce the speed of the screw rotor

Using these guidelines this will increase the lifetime of the powder screw conveyor significantly. The guidelines will in general require a screw conveyor with a larger diameter. Do not consider this as a problem or issue. The increased lifetime will optimize your total cost of ownership.

See another screw conveyor used for abrasive material here

Design key points in this powder screw conveyor application

• The screw conveyor is manufactured in two types of stainless steel – 1.4401 acid proof stainless steel and 1.4462 duplex steel
• Designed with a special inlet to fit into an existing application
• Delivered with 4 support legs for easy mounting on-site

See another screw conveyor with a special designed inlet here

How can BEMA assist you in the design process of a screw conveyor for abrasive material?

1. Check the capacity calculation and ensure a low filling degree
2. Select a drive solution with a reduced speed compared to a “normal” screw conveyor solution
3. Assist to select abrasive resistant steel types
4. Design the screw conveyor with steel elements, which easy can be changed over years of operation as wear parts

BEMA is a classical machine manufacturing company. We have our own engineers and technicians with years of experience in designing screw conveyors for all types of specialised screw conveyor solutions. We always recommend that you contact us early in the design phase. In this case it is much easier to implent the right design of the powder screw conveyor.

FAQ for Screw Conveyor for Abrasive Powder

1. How do you increase the lifetime of a screw conveyor handling abrasive powder?

Lifetime is improved by using wear‑resistant steel for flights and casing, lowering the filling degree, and reducing rotor speed. Duplex steel housing is especially effective for extending service life in abrasive applications.

2. Why is a larger screw diameter often required for abrasive materials?

A lower filling degree and reduced speed typically require a larger diameter to maintain capacity. This is not a drawback—longer lifetime and reduced wear lower the total cost of ownership.

3. What materials are used in the construction of this screw conveyor?

The conveyor is built in two stainless steel grades: 1.4401 acid‑proof stainless steel and 1.4462 duplex steel, chosen for their strength and abrasion resistance in demanding process environments.

4. How does BEMA support the design of screw conveyors for abrasive applications?

BEMA assists with capacity calculations, selecting reduced‑speed drive solutions, choosing abrasion‑resistant steel types, and designing wear‑friendly components that can be replaced easily during long‑term operation.