necessary, as these slurries often do not behave in the manner of a normal liquid. At the opposite end of the scale, settling slurries, formed by coarser particles (greater than 1 mm), tend to form an unstable mixture. In these cases, particular attention must be given to power calculations in terms of flow-velocity and friction-loss factors. Coarser particles tend to have higher wearing properties, and tend to form the majority of slurry applications. This type of slurry is also referred to as heterogeneous. In both instances, homogeneous and heterogeneous, height differentials and the distance between source and destination need to be factored in to the equation. Consulting firms such as Paterson & Cooke
and Ausenco can assist with the complex designs and calculations involved. Breaking new ground in slurry pipeline technology Slurry pipeline technology is a safe transportation alternative that minimises impacts on local communities and the environment. Its benefits include lower pollution levels, road transport and fuel costs and staffing requirements, and a reduced reliance and impact on highuse transport corridors. Slurry pipeline technology offers a sustainable solution in many environments. What is more, the technology is reliable and efficient. Ausenco has designed and engineered
THE RIGHT CHOICE Our customers wanted more power to perform all functions at once. They wanted a heavy-duty stake-down system for greater stability when boring and backreaming. They wanted greater horsepower, a highercapacity pump, advanced electronics - and, of course, they wanted all of it to be easy to operate. Our engineers love a challenge, and you’ll love the JT30 All Terrain directional drill.
The Ditch Witch TK Series HDD Guidance System: You can cut through noise and complete bores with an unprecedented level of confidence, thanks to the TK Series’ dual locating methods (peak and null), four-frequency beacon, depth range of up to 33.5 m, high-contrast graphics, and much more.
TWO CHALLENGING, LONG-DISTANCE SLURRY PIPELINE PROJECTS: Antamina Multiproduct Concentrate Pipeline Location: Peru Client: Compañia Minera Antamina S.A Year: 1989-2009 Ausenco provided a full range of engineering services on this 304 km copper-zinc concentrate slurry pipeline system – the first multiproduct slurry pipeline system in a mountainous region. Work began with a feasibility study, including route planning, constructability evaluation, conceptual design and a ±15% cost estimate. It continued to include basic and detailed engineering and expansion and repair projects throughout the life of the system. The steel pipeline was designed to transport a maximum of 1.4 Mt/y of copper and zinc concentrates from Antamina mine site in northern Peru at an elevation of 4 100 m above sea level to terminal facilities at Huarmey.
Samarco Iron Concentrate Pipeline Location: Brazil Client: Samarco Mineração S.A. Year: 1995-2012 The Samarco project is an integrated open-pit mine, pipeline and por t operation in Brazil. The project includes the longest iron concentrate pipeline in the world, which currently spans 398 km, with a peak altitude of 1 150 m above sea level. Ausenco has provided Samarco with a variety of ser vices throughout the development of this project, ranging from laborator y testing, simulations, studies and design through construction and star t-up suppor t. Though the original pipeline predates the formation of Ausenco, several key members of the design, construction, and star t-up team are principals at Ausenco today.
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The JT9 combines the simplicity and easy operation of smaller horizontal directional drills with the advanced features of bigger drilling machines.
Tri-Hawk Down-hole tooling for soft to medium rock, fractured and chunk rock
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H/OFFICE: Tel: (011) 306-0700 • Fax: (011) 918-7208 e-mail: Elb@elbquip.co.za Website: www.elbequipment.com Branches and Dealers throughout Southern Africa