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首页> 外文会议>Proceedings of the ASME India oil and gas pipeline conference 2013 >SLURRY PIPELINES -AN ECONOMIC SOLUTION TO TRANSPORTATION OF MINERALS MATERIALS
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SLURRY PIPELINES -AN ECONOMIC SOLUTION TO TRANSPORTATION OF MINERALS MATERIALS

机译：泥浆管道-矿物质运输的经济解决方案

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Slurry pipelines find a special place in industrial applications which require transportation of solid particles through a pipeline. Flow-ability of these solid particles is achieved by mixing and suspending them in water or other carrier fluids. Slurry pipelines are characterized with cost effectiveness for long distances, reliability, low maintenance, low air & noise pollution. Importantly it is eco-friendly and does not affect the environment. Over the past 5 decades, slurry pipelines have proven its effectiveness in cost saving for long distance transportation, safe handling and high reliability. Since the inception of long slurry pipelines in 1957 in Ohio to transport coal, gradually over the period, new technologies in slurry transportation has made it possible to transport minerals and materials over long distances safely and effectively. Many materials such as coal, iron concentrate, phosphate concentrate, copper concentrate, zinc concentrate, lead concentrate, nickel concentrate and limestone have been transported successfully over long distances. The long distance slurry pipelines have certain disadvantages in terms of high initial capital investment, the carrier fluid availability, and importantly it is feasible in areas wherein rail and road transport is not well developed. Most of the mineral concentrates require a beneficiation step that involves grinding of the ore to a very fine size in order to achieve good recovery. This is a wet process and the size of the product is generally suitable for long-distance pipeline transportation. In particular for coal transportation, the drying cost is add-on cost. These all requirements contribute to the transportation cost and make it uneconomical for short distances. Therefore for slurry pipelines to be economic, the distance of transportation will have to be long. In recent times, polyethylene pipes have proven to be very cost effective to transport copper, iron ore, phosphates and gold concentrates. They have high resistance to slurry abrasion, prolonged wear life, high ductility and toughness properties. Pumps are developed to handle high pressures of up to 250 bars and facilitated pumping of solid concentration of 60 to 65% weight. Some alternate carrier fluids result in higher concentrate carrying capacity. Slurry pipelines have proven its high economy and feasibility to operate over long distances. With many developments underway, slurry pipelines will pave way to decrease the load and dependency on rail and roads.
机译：浆液管道在需要通过管道输送固体颗粒的工业应用中占有特殊的位置。这些固体颗粒的流动性是通过将它们混合并悬浮在水或其他载液中来实现的。泥浆管道具有成本效益高，距离长，可靠性高，维护成本低，空气和噪音污染低的特点。重要的是，它是环保的，并且不会影响环境。在过去的5年中，泥浆管道已证明其在节省成本，长距离运输，安全处理和高可靠性方面的有效性。自从1957年在俄亥俄州开始使用长浆管道运输煤炭以来，逐步地，在此期间，新的浆运输技术使安全有效地长距离运输矿物和物料成为可能。煤，铁精矿，磷酸盐精矿，铜精矿，锌精矿，铅精矿，镍精矿和石灰石等许多材料已成功长距离运输。长距离的泥浆管道在高的初始资金投入，载液的可利用性方面具有某些缺点，并且重要的是在铁路和公路运输发展不完善的地区是可行的。大多数矿物精矿需要进行选矿步骤，该步骤涉及将矿石研磨至非常细的尺寸，以实现良好的回收率。这是一个湿法工艺，产品尺寸通常适合长距离管道运输。特别是对于煤炭运输，干燥成本是附加成本。所有这些要求增加了运输成本，并且使短距离运输变得不经济。因此，为了使矿浆管道经济，运输距离将必须较长。最近，事实证明，聚乙烯管道在运输铜，铁矿石，磷酸盐和金精矿方面具有很高的成本效益。它们具有高的耐泥浆磨损性，延长的磨损寿命，高的延展性和韧性。泵的设计可承受高达250 bar的高压，并有助于泵送固体浓度为60％至65％的重量。一些替代载液会导致更高的浓缩物承载能力。浆液管道已经证明了其高经济性和长距离运行的可行性。随着许多开发的进行，泥浆管道将为减轻负荷以及减少对铁路和公路的依赖铺平道路。

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