Cavex® Dewatering Hydrocyclone

About this product

The Cavex® dewatering cyclone is designed to deliver a consistent underflow density regardless of solids content variation in the feed. It contains a discharge regulator to increase overall performance and efficiency in tailings, sand and aggregate applications. Overview The Cavex® dewatering cyclone features the innovative laminar spiral inlet geometry design of the original Cavex® hydrocyclone range, but with additional accessories that allow it to create a dry and stackable product. The hydrocyclone is usually fitted on a boom that can be rotated and adjusted. It also contains a discharge regulator (e.g. fishtail, duckbill, flapper) below the spigot to increase efficiency and deliver a consistent underflow density, regardless of solids content variation in the feed. The extended overflow pipe induces a siphon effect which creates a vacuum on the cyclone discharge regulator, causing it to close and trap the majority of the water, silts and clays. The regulator forces a higher percentage of water, silts and clays to the overflow. When the weight of the solids inside the hydrocyclone regulator is sufficient to overcome the vacuum, the thick underflow product discharges from the regulator. The control of the material reporting to the underflow results in a much higher underflow density than otherwise obtainable. The Cavex® dewatering cyclone is best suited to tailings, desliming and dewatering applications. Frequently Asked Questions What makes a cyclone a dewatering hydrocyclone? A dewatering hydrocyclone has similar principles as a standard hydrocyclone, but is fitted with additional accessories to aid in dewatering. These include: • A discharge regulator on the bottom of the cyclone, which allows the solids to build in the bottom of the cyclone when under siphon conditions. The solids will be discharged when the weight of the concentrated slurry (mostly solids) overcomes the siphon. • A special, extra-long overflow pipe at the top of the cyclone, which includes a valve and vacuum gauge to control the siphon generated. What feed density is required for a dewatering hydrocyclone? As with standard cyclones, feed density within a dewatering hydrocyclone (or "stacker") is also important. Typically, the feed density must remain below 25wt% solids. What feed pressure is required for a dewatering hydrocyclone? A portion of the dewatering hydrocyclone’s performance is dependant on the use of a siphon. In order to pull a sufficient siphon, the feed pressure to the hydrocyclone must remain below atmospheric pressure. Features and benefits Sharper Separation Efficiency The Cavex® dewatering cyclone contains our acclaimed laminar spiral inlet design, which results in sharper separation efficiency, greater capacity, reduced turbulence and longer wear life compared to other cyclones. Improved Underflow Density The Cavex® dewatering cyclone delivers a very high and consistent underflow density regardless of solids content variation in the feed, and with minimal water and slimes. The discharge of solids from the cyclone is controlled by a regulator (fishtail), and the siphon control valve offers simple adjustment of the underflow density. Easy to Mount on High Structures Cavex® dewatering hydrocyclones are smaller than other dewatering solutions, therefore can be easily mounted to high structures or over bins to be used in conjunction with screens. Innovative Cyclone Discharge Regulator The key to the success and advanced efficiency of the Cavex® dewatering hydrocyclone is the innovative operation of the cyclone discharge regulator (fishtail). The fishtail is fitted below the spigot on the underflow. Local After Sales Support All Cavex® hydrocyclones are backed by our unrivalled global support network that spans across more than 60 countries world-wide. Our team are always there for you, no matter how remote your operation is. We can also service machinery on site for added convenience. Customisations Available Depending on your needs and application, we can customise your hydrocyclone to retrofit into existing installations, maximise production and address operational or maintenance issues. Why Weir? At Weir, our team have been manufacturing high performance hydrocyclones for over 45 years, with the original Cavex® hydrocyclone setting new industry benchmarks when introduced over 20 years ago. Our continued commitment to research and development means that we're always innovating and pursuing further improvements to ensure that our hydrocyclones stay at the forefront of the industry. We provide a diverse range of hydrocyclones of different sizes and capabilities to proactively meet the varying needs of customers with: • Our knowledgeable technical team • Reliable supply and inventory levels • Global presence and • Extensive after sales and service networks Ready to get in touch with our team? Contact us today. Applications Our Cavex® dewatering hydrocyclones are best suited for separation and classification of precious metals and minerals. • Aggregate • Aluminium • Copper • Gold • Graphite • Gravel • Iron • Lead • Limestone • Lithium • Mineral Sands • Molybdenum • Oil Sands • Palladium • Phosphate • Platinum • Potash • Rare Earths • Silica Sand • Silver • Soda Ash • Zinc Processes • Fines Recovery • Fines Removal / Desliming • Producing Dry / Stackable Tailings • Tailings Recovery • Thickening (Paste) • Water Recovery Product specifications At Weir, we can provide customised hydrocyclone solutions and provide simulations, drawings and mass balances depending on your application and requirements. If you need help or advice on a custom design, get in touch with us today. Replacement parts The highest-wearing parts of a hydrocyclone are the spigot and apex. These will need to be replaced throughout the lifetime of your hydrocyclone, depending on the application. If you need replacement parts for your hydrocyclone, get in touch with our team of experts. Product upgrades and modifications Cavex® dewatering hydrocyclones can be customised to suit various applications, with a variety of spigots and vortex finders to maximise production and address any operational or maintenance issues. Services and maintenance Cavex® dewatering hydrocyclones are backed by our unrivalled global support network that spans across more than 60 countries world-wide. This means that our experts are here to support you, every step of the way, wherever you may be. Our expert team will work alongside you to deliver: • Customised cluster solutions • Customised lining to maximise wear life and reliability • Total hydrocyclone performance analysis Our extensive global network can provide services on site or at one of our 160+ dedicated service centres.