Multotec hydrocyclones are used around the world in mining and processing minerals, manufacturing, aggregates, food processing, wastewater management 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 the equipment’s lifespan, classification efficiency, and energy consumption.
Multotec manufactures a complete range of off-the-shelf and customised hydrocyclones to match your specific process requirements.
Full technical support and field service, together with high availability of hydrocyclone spare parts and accessories helps ensure maximum plant performance. We manufacture hydrocyclone distributors supporting up to 62 hydrocyclones.
The Multotec hydrocyclone technology range comprises hydrocyclone 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.
Small diameter hydrocyclones (up to 100 mm) are manufactured mainly from polyurethane, while larger hydrocyclones can be polyurethane, steel cyclones with bonded or loose rubber lining, and steel with ceramic lining.
The design of classification cyclones is a major market differentiator for Multotec. Read more, here. The design of classification cyclones is a major market differentiator for Multotec. Read more, here.
The scrolled evolute and ribbon inlet hydrocyclone designs have a much higher capacity compared to standard inlet designs. The result is that smaller diameter hydrocyclones can be used, or hydrocyclones can operate at lower pressures thereby saving on pumping energy. Slurry turbulence at the entry point into the cyclone is reduced as well as vortex finder wear, that can result in particle short-circuiting to the overflow, thereby lowering operating costs while maximising separation efficiency.
If the hydrocyclone liner becomes damaged, the material which finds its way between the liner and the hydrocyclone shell will begin to drain from weep holes, indicating that the liner needs to be replaced.
With a better insight into the state of your hydrocyclone liner, you can reduce unplanned stoppages and downtime, and extend the life of the hydrocyclone’s steel shells.
Weep holes also reduce the required frequency of internal cyclone inspection. This is because cyclones without weep holes require regular inspection to assess the integrity of the liner itself.
Contact Multotec’s hydrocyclone specialists for an assessment of your liners, weep holes and hydrocyclone performance.
To improve hydrocyclone component wear characteristics, and to ensure they can be used in highly aggressive applications, Multotec has been developing and supplying SiC (Silicon Carbide) lined hydrocyclones and components, with all trial applications showing excellent results. This ensures that best performance is maintained over a longer period before parts are due for replacement, preventing downtime.
Do you process highly abrasive slurry? Multotec uses engineered ceramic tiles to provide a longer-lasting wear surface. Engineered tiles are pressed with chamfered sides and are then cut precisely to the desired shape.
Hydrocyclones are selected and sized by Multotec’s experienced process team using our specialised CY-i hydrocyclone sizing software to achieve the required centrifugal forces and cut points to best suit your precise requirements. For specialised applications, Multotec can custom design and manufacture a hydrocyclone to meet your application requirements. Consider, for example, the monocone, which combines the cone and the spigot of cast iron cyclones, into a single unit for specialised applications.
Watch this tailings hydrocyclone video.
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 hydrocyclone reliably delivers your required cut points and process parameters, with short lead times on any hydrocylone spare parts you may need. Learn more about prolonging the life of your hydrocyclones, here.
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 hydrocyclone inspections and servicing, which includes:
Multotec offers hydrocyclone optimisation for maximum mineral processing efficiency. In addition, our cyclone division manages the lifecycle of your cyclone, ensuring not only peak performance but also minimising the environmental impact of your plant. Contact us to find out more.
Need hydrocyclone spares? We retain stock of all the spare parts you need, which are available with short lead times. Contact us for more information.
With the Multotec pressure gauge installed on your hydrocyclones, 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 hydrocyclone pressure results in inefficiencies while high pressure increases the centrifugal force beyond its design specifications; this increases the cyclone wear rate. Ensuring your hydrocyclone operates in the correct pressure range enables optimum hydrocyclone operation, helping you improve downstream processing performance and reduce costly potential downtime.
Multotec has developed the Internal Surface Photographic Inspection (iSpi) system for hydrocyclones. By making use of a 360° camera, our application engineers can offer a system which allows them to inspect the inside of a customer’s cyclone in-situ and with minimal effort.
When used in conjunction with a coloured dot tile, iSPi can also help detect the remaining lifespan on Alumina lined cyclones.
Multotec’s long-established cyclone test rig gives confidence to customers’ hydrocyclone selection, in line with the company’s mission to provide fit-for-purpose solutions in mineral and particle classification.
Learn more about our classification tests on hydrocyclone rigs, here.
A hydrocyclone separates particles in liquid. They have no moving parts, but instead use centrifugal force to separate matter based on size and density. The cone shape of the cyclone produces a vortex when slurry is fed into it, and this force enables the separation of particles. The point of separation between coarse and fine particles is called the cut point.
Coarser particle will exit the hydrocyclone through the underflow discharge, while finer particles will be discharged via the overflow discharge.
Hydrocyclones are used in industries such as mining, minerals processing and aggregates to classify, densify, dewater, de-slime and recover fines.
The mining industry makes use of hydrocyclones to separate coarse and fine particles, according to the size and density of the particles.
Hydrocyclones are an excellent dewatering solution because of their low-cost, low-maintenance design. Multotec dewatering cyclones are ideal for a range of applications in solids dewatering, water recovery and densification applications.
Learn more about what cyclones can and cannot do, here.
Busting Hydrocyclone myths: Discover 5 fun facts about Multotec cyclones
There are four main types of hydrocyclones, including tangential, axial, helical, and spiral.
A hydrocyclone is also known as a cyclone. This is the equipment used do deslime, dewater and classify or size various products.
Do you have a specific question for our hydrocyclone division?
Get in touch with us here.