What industry is the decanter centrifuge used for?

Decanter centrifuge working principle:

Centrifuges are useful in most industries where solids, liquids, and gases are mixed into a single substance, but separating the components is necessary. For example, decanters (also known as solid bowl centrifuges) continuously separate solids from liquids in slurries and therefore play an essential role in wastewater treatment, chemical, petroleum, and food processing industries. The basic principle of a decanter centrifuge relies on buoyant separation. The denser ingredients will fall to the bottom of the mixture while the less dense ones are suspended above. Due to a large centrifugal force, decanters rotate to separate the substances inside quickly. Before decanters were used, components took hours to settle, but a decanter centrifuge can take only a few seconds.

The key components of the high-speed spin are decanter bowls and conical bowls.

decanter centrifuge price

Duplex Stainless Steel decanter centrifuge components

What are the uses of a decanter centrifuge?

Apparently, decanter centrifuge manufacturers are shocked by how far we can go with supplying them with high-quality parts that are hollow and uniform.

Superior decanter components are centrifugally cast with high-grade stainless steel, which resists corrosion, contamination, and high maintenance. Unlike other metals, centrifugally cast stainless steel features an even, defect-free grain, with no porosity to block leaks. Centrifugal casting decanter parts are typically high-strength, long-lasting, and highly reliable.

Centrifugal casting decanter centrifuge parts have apparent advantages over forgings and welded sleeves

Compare forgings of the same material:

 Lower price, centrifugal casting, and a more comprehensive range of materials. The same material, its cost is much lower than forgings

The construction period is shorter. Casting after direct smelting greatly shortens the construction period.

 Same material, and similar mechanical properties to forgings

Comparative Weldments

Centrifugal casting parts are not easy to deform, which is especially important for high-speed rotating parts!

 Good material uniformity

Wide range of material choices

Materials of decanter centrifuge components:   

Duplex steel–2205, ASTM A890 CD4MCuN etc.

Austenite—ss304, ss316L etc..

Nickel-based alloys.

Centrifugal casting bowl body
Both cylindrical section and conical section are made from centrifugal casting. This procedure is ideal for all rotationally symmetrical components. The molten steel is poured into the mould at a temperature of up to 1,600 °C (2,912 °F).
Centrifugal force pushes the contents against the outer wall at up to 120 times earth gravity. This forces all impurities and gas inclusions towards the inner surface, leaving behind a pure, highly dense structure. Any residues that do remain are then removed, to create a flawless component.

Various stainless steel
EN 1.4362, UNS S32304
EN 1.4462, UNS S32205/S31803
EN 1.4470, UNS J92205
EN 1.4410, UNS S32750

CNC machining OEM bowl parts of decanter centrifuge
All metal processing is done by CNC machines, including turning, drilling and milling. Heat treatment is carried out in a professional heat treatment factory, X-ray ensures welding quality.

We use honing technology to ensure absolute dimensional accuracy, and can also deal with fitting and assembly on request. Our range is rounded off with a reliable delivery service.

This translates, for our customers, into no time wasting with coordination tasks, and maximum processing reliability: Short production-times and consistently-high quality.

For over decades, SENZ has provided quality industrial centrifuge products backed by superior service and aftermarket support. Today, the tradition continues, as SENZ products are supported by an international team of engineers and service professionals who know how to keep your decanter centrifuges running at maximum efficiency. Our factory-trained service technicians are available for on-site/on-demand repair service, training, troubleshooting, and consulting.

Decanter centrifuge components---Best solution

The most important factor to keep in mind when manufacturing decanter centrifuge components or designing a completely new decanter assembly using a cone centrifuge parts casting machine is that the decanter bowl and tube wall thickness must be thin enough to meet design specifications while still providing each Structural integrity required for components.


Stainless steel cylinders and conical bowls for decanter centrifuges are manufactured from the centrifugal casting process. Decanter Bowls, Bowl Cones, and Bowl Cylinders are typically made in various dimensions through centrifugal casting and additional machining. These can be purchased as a single part or already assembled/welded with a stainless-steel cylinder.

The advantages of centrifugal casting

Using centrifugal casting, parts have greater strength because grain structures are denser. Its mechanical properties are almost equal in all directions, as the process allows for more control over directional solidification. As a result of this increased structural density, the component has a longer life span and is more stress tolerant. The improved structural uniformity and reduced internal porosity of the components also contribute to enhanced part strength.

The casting process involves spinning a mold, which applies intense pressure to the molten metal. By separating lighter contaminants and impurities from the denser metal, these impurities can be contained in the bore of the component, minimizing the risk that weak points or porosity will form. Following casting, these impurities are removed via machining, leaving a highly pure product.

Decreased production costs and greater purity will have a positive effect on efficiency. As impurities accumulate at the inside surface of the product, and these are machined out, the number of defective parts and reject decreases. With shorter set-up and production times, you save a lot of money.

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