The Asia Miner

APR-JUN 2019

The ASIA Miner - Reporting Important Issues to Mining Companies in the Asia Pacific Region

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the asia miner • volume 16 • issue 2 34 SUPPLIER NEWS The mining industry is facing a number of challenges including declining ore grades, environmental pressures, and water scarcity. To deal with these challenges, and conঞnue to strengthen operaঞons, mine sites need a supplier that truly understands their business and can help drive iniঞaঞves and improvements, overcoming challenges together. John McNulty, Vice President Global Engineering and Technology for Weir Minerals says that the company is much more than an equipment supplier. "Weir has the engineering experঞse, technical know-how and local support to help our customers opঞmise their enঞre circuit," says Mr McNulty. "Mine operators need more than just another equipment supplier, they need someone they can rely on and we take every opportunity to partner with our customers." Weir Minerals believes the only way to effecঞvely opঞmise a mine's process is by working closely with the customer. With over 100 service centres across the globe, Weir Minerals' expanded service network ensures the team are available throughout the enঞre process from installaঞon and commissioning through to on-site maintenance. Weir Minerals have built their enঞre philosophy upon this customer-centric approach which they have termed Integrated Soluঞons. It's a global team effort from process and service engineers, to product specialists all working together to tackle any given problem. "Our team work with the customer to understand their vision, idenঞfy any problems and then work with them at real soluঞons, not remotely but on site. Wherever possible we want to be part of the enঞre process from the brainstorming right through to the installaঞon. This insঞls confidence in our ability to deliver whatever the customer requires," states John McNulty. In Finland, the Weir Minerals team helped Yara Siilinjärvi mine to increase its tailings storage space without expanding the mine's footprint. Yara's exisঞng tailings storage facility (TSF) was reaching full capacity. They Weir optimises processes through strong partnerships Weir leads the way in helping customers opmise their enre circuit conducted an extensive study for future storage of tailings and decided to go for a thickened tailings soluঞon. The tailings would be thickened to 68-72 per cent by weight in order to build a +2 degree deposit, thereby sufficiently increasing the storage capacity. Weir Minerals supplied a complete pumping soluঞon to Yara, comprising of three GEHO® TZPM 2000 pumps and Warman® centrifugal pumps. In addiঞon, Weir Minerals also supplied the required hydraulic actuated slurry valves, sucঞon strainers, slurry instrumentaঞon and helped develop the funcঞonal descripঞon for Yara's distributed control system (DCS). The system was successfully commissioned in February 2017, with slurry solids concentraঞons reaching target, resulঞng in a slope at the TSF of approximately 3 degrees. This has extended the current life of the mine well beyond 2035. In South Africa, Weir Minerals helped CNC Crushers opঞmise their enঞre process. The team were experiencing high wear on the installed convenঞonal hydrocyclone as well as old technology Envirotech® pump, having to replace it every 120 hours. The Weir Minerals team re- evaluated how the site operated, analysing the issues and sketching up a completely new process for the site. A Warman® WBH® 100 slurry pump, a Cavex® 400CVX10 hydrocyclone, and Trio® TC cone crushers were all installed to increase up-ঞme and reduce maintenance costs. Addiঞonally, a spares and service agreement was put in place to ensure that maximum plant availability was maintained. The results of this refit surpassed all expectaঞon with a 2007 per cent decrease in pump maintenance, a 45 per cent increase in plant throughput, and a 100per cent boost in plant output. When asked about the partnership with Weir Minerals, Carl Crous, CNC Owner said that partnering with Weir Minerals increased producঞon output significantly, with upঞme increasing overnight.

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