Mining dams pose a substantial risk, and residue management clearly needs to change. Alfa Laval is leading that transformation. The robust design and large capacity of our solid-bowl decanter centrifuges have proven the perfect solution for safe and secure dewatering of mine tailings. The small footprint substantially reduces installation space. The consistency of the solids fraction is perfect for co-disposal or dry stacking. And you recover large volumes of water for reuse.
Ensuring a fast, continuous process for safe, clean and efficient solid-liquid separation
- High capacity and separation efficiency with optimal solids dryness
- Long working life
- Designed for high-density sludge
- Compact design and small installation area
- Easy to scale-up capacities from test results
The proven design and performance of Alfa Laval solid bowl centrifuges are based on decades of research and development in challenging solid-liquid separation applications. In Australia, it has a particular focus on coal, copper, iron ore, gold, nickel and uranium tailings. The unique bowl geometries, exceptional solids handling rates and robust design combine to set new standards in mining tailings management. Alfa Laval solid bowl centrifuges are wear-resistant, made with high-grade materials to withstand harsh environment of erosion and corrosion. Its 1000mm machines offer with very large capacity, up to 80 dry tonnes per hour, specifically designed for heavy duties in mining and mineral processing.
How it works
Alfa Laval solid bowl decanter centrifuges are specifically designed to separate mining and mineral slurries, tailings and sludge into a solid phase and liquid phases.
Separation takes place in a horizontal cylindrical bowl equipped with a scroll conveyor. The product is led into the bowl through a stationary inlet tube and is then smoothly accelerated in a full-flow feed zone design. Centrifugal forces of up to 3,500 G make the solids accumulate on the inner surface of the bowl.
The conveyor rotates in the same direction as the bowl, but at a different speed. This moves the solids towards the conical end of the bowl. The solids leave the bowl through the solids discharge openings into the casing.
Separation takes place throughout the length of the cylindrical part of the bowl, and the clarified liquid leaves the bowl by flowing over adjustable plate dams into the casing.
Contact Alfa Laval Australia today to get a quote or find out more about our solid bowl centrifuge trial unit.
A centrifuge trial allows to you determine parameters such as the moisture in the cake, centrate clarity, determine scalable capacity and to see how this technology can work in practice for your specific facility.
At Alfa Laval Australia we have a design for full scale skid mounted SBC which could be used for trials as well as an interim solution for sites where tailing dams are reaching capacity.
Local support for your solid bowl decanter centrifuge
No site is too remote. Our team of experienced service engineers based at our Huntingwood/Sydney Service Centre and around Australia help you ensure that your solid bowl decanter centrifuge is performing at its best, so you can focus on the rest. Alfa Laval Australia is at your service.
Customer Success: Bloomfield Group Rix's Creek
The Rix’s Creek Coal Handling and Preparation Plant (CHPP), part of Australia's Bloomfield Group, set out to improve its onsite coal tailings management as part of its sustainability strategy. Tailings dewatering with Alfa Laval solid bowl centrifuges allows to reduce water and energy consumption and minimize the surface footprint of waste handling processes.
Leading the Industry in Sustainable Tailings Management
Mature fine tailings, Canada
More than 30 Alfa Laval decanter centrifuges have been installed at three different tailings treatment sites in Canada. The decanters have proven to be an outstandingly efficient solution for large-scale dewatering of tailings. They efficiently remove the finest particles that conventional solids control equipment is unable to deal with.
Eti Maden, Turkey
The world’s largest borate mining company is Eti Maden in Turkey. There they use an array of fully protected Alfa Laval decanter centrifuges to separate tailings from a saturated borate solution. The company is very pleased with the long track record of reliable operation, low maintenance costs and strong local service support from Alfa Laval.
From the coal face
How to manage tailings storage facilities (TSF) is an ongoing challenge for Australia’s mining and minerals industry, from a risk mitigation and cost point of view. Alfa Laval Australia Mining Engineer, Hamid Foroush, explains how solid bowl centrifuge technology has evolved over time to provide an economically and technologically superior solution to dewater tailings and recover process water.
Meet the tailings dewatering challenge with Alfa Laval’s decanter centrifuges. They offer a cost effective, sustainable and, above all, safe solution to manage tailings. Download the brochure to read more about our cleaner, more efficient and safer solid-liquid separation systems.