Cyclones

Multotec hydrocyclones are used across the world for applications in mineral processing, manufacturing, food processing, waste water treatment and other industries.

This industry-proven product range of classification, dense medium and tailings dam cyclones has been optimised over hundreds of applications across the world to improve classification efficiency, provide greater lifespan and reduce energy requirements.

  • Scrolled evolute design improves capacity and reduces wear rates compared to regular hydrocyclone inlets
  • Customised cyclone designs according to your unique specifications 
  • Designed for fine and accurate cut-points
  • Innovative designs reduce misplacement of product; rubber lips prevent spillage
  • Abrasion and heat resistant materials reduce wear
  • Innovative weep holes reduce downtime

Multotec manufactures a complete range of off-the-shelf and customised cyclones in order to match your specific process requirements. Full technical support and field service, together with high availability of cyclone spare parts and accessories helps ensure maximum plant performance.

Cyclone range:

Classification Cyclones

Our classification cyclone separator range is used across the world in density separation applications.

High-capacity classification cyclones are made with a steel shell and lined with rubber or ceramic as required by your application.

Dense Medium Cyclones

Cast Iron Dense Medium Cyclone

The ultimate in alumina tiled cyclone design! Our DM cyclones provide max. separation efficiency and wear resistance in harsh applications.

Tailings Dam Cyclones (GV Cyclones)

Tailings Dam Cyclone

GV Cyclones are designed specifically for use in tailings dams. These cyclones weigh just 45 kg, with a 220 mm ID and 20° cone angle.

Cyclone Distributors

Cyclone Distributors

Cost-effective, highly-efficient and long-lasting, our wide range of cyclone distributors accommodates between 2 and 62 cyclones with cyclon...

Cyclone Accessories

As one of the world’s leading hydrocyclone manufacturers, Multotec supplies a complete range of hydrocyclone parts, including hydrocyclone liners.

Get your hydrocyclone spare parts quickly and conveniently at your local Multotec branch. Liners, spigots, valves, adapters and more!

Cyclone Spares

Cyclone spares

Multotec manufactures spares for every single part of its DMS and Hydro Cyclone ranges, amounting to over 10 000 producible cyclone spares.

Get in touch with your local mineral processing specialists.

Get in touch with Multotec today to see how we can optimise your separation efficiency.Contact Us

Engineered for maximum plant performance

The Multotec hydrocyclone range comprises cyclone diameters from 25 to 1 400 mm. Most of these diameters can accommodate a range of cone angles, while different vortex finders and spigot diameters are standard for all diameters.

The small diameter cyclones, up to 165 mm, are predominately polyurethane, while the larger diameter units can be supplied in polyurethane, steel cyclones with bonded or loose rubber lining, and steel with ceramic lining.

Revolutionary hydrocyclone designs

Scrolled evolute design:
Multotec has proven that the scrolled evolute and ribbon inlet cyclone designs have a much higher capacity when compared to standard inlet designs. The result is that vortex finder wear is substantially reduced, thereby lowering operating costs while maximising hydrocyclone separation efficiency.

The benefits of weep holes in the cyclone:
If the hydrocyclone liner becomes damaged, the material which finds its way between the liner and the cyclone shell will begin to ‘weep’ from these holes, indicating that the liner needs to be replaced. This drastically reduces unplanned stoppages and will extend the life of the hydrocyclone’s steel shells.

Weep holes also reduce the frequency of internal hydrocyclone inspection. This is because cyclones without weep holes require regular inspection to assess the integrity of the liner itself.

Prolonging The Life Of Cyclones
Cast Iron Cyclone Flanged Vortex Finders

Sized to your process requirements

Cyclones are selected and sized by Multotec’s experienced process team using our specialised cyclone sizing software to achieve optimum centrifugal forces and cut points to best suit your precise requirements. Should you prefer, you can also size your own cyclone using our Online Multotec Sizing app and send for review, For specialised applications Multotec can custom design and manufacture a cyclone to meet your application.

Maintaining optimum performance with tailored cyclone service & support

Hydrocyclones need to be correctly maintained to ensure they operate at peak separation efficiency. Your local Multotec branch has the necessary expertise to help ensure your cyclone reliably delivers your required cut points and process parameters, with short lead times on any hydrocylone spare parts you may need.

Maintenance should preferably be done on every maintenance shutdown in order to allow for internal inspection. Your local Multotec service crew will provide end-to-end cyclone inspections and servicing, which includes:

  • monitoring the internal condition to determine if there are any abnormal wear patterns forming, or if any tiles, if it is a ceramic cyclone, have been damaged
  • measuring the spigot diameter since the cyclone efficiency can become affected as the spigot diameter increases
  • looking at the vortex finder leading edge, which means looking from the spigot side into the vortex finder, to determine if the condition is still good. In the event that it is not possible to inspect from the spigot side, the vortex finder length can be measured from the top of the cyclone after the overflow pipe has been removed
  • measuring the vortex finder length and spigot diameter
  • checking for excessive grooves in the cyclone body or vortex finder
  • checking for feed inlet and cone wear, uneven surfaces, and steps

Maintaining optimum cyclone pressure

With the Multotec pressure gauge installed on your cyclones, plant operators will be quickly notified if there is any surging or pressure drop in the hydrocyclone feed. The reading on the pressure gauge will allow for an accurate calculation of volumetric flow rates to the hydrocyclone which will make it possible to calculate the mass flow rate.

Lower cyclone pressure results in inefficiencies while high pressure increases the centrifugal force beyond its design specifications, which increases cyclone wear rate. Ensuring your cyclone operates in the correct pressure range enables optimum cyclone operation, helps reduce costly potential downtime and improves downstream processing performance.

Multotec’s CL Cast Iron Cyclones

4Start Thread Cyclone

Multotec Cyclones - Tailings Cyclone

T660 Cyclones

International mining houses such as Glencore Xstrata, Anglo Coal, BHP Billiton and Rio Tinto use Multotec’s equipment to reduce running costs and optimise plant performance.
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