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Introduction
Published in Henry Liu, Pipeline Engineering, 2017
The slurry pipeline is used to transport fine particles of solids mixed with a liquid, usually water, to form a paste (slurry) that can be pumped through the pipeline. It is used commonly in mining for transporting both minerals and mine wastes (tailings). An example is the Black Mesa Coal Slurry Pipeline, which transports 5 million tons of coal each year from Arizona to Nevada, over a distance of 273 mi (438 km), using 18-inch-diameter steel pipe. The slurry in this pipeline is a mixture of fine coal particles (of less than 1 mm size) and water, at the ratio of approximately 1 to 1 by weight. Figure 1.5 is a photograph of a pump station of the Black Mesa Pipeline.
Internal Flow Applications
Published in Ron Darby, Raj P. Chhabra, Chemical Engineering Fluid Mechanics, 2016
A coal slurry pipeline is to be built to transport 45 million tons/year of slurry over a distance of 1500 miles. The slurry can be approximately described as Newtonian with a viscosity of 35 cP and SG of 1.25. The pipeline is to be built from ANSI 600# commercial steel pipe, the pumps are 50% efficient, energy costs $0.06/kWh, and the economic lifetime of the pipeline is 25 years. What would be the most economical diameter for the pipeline, and what would be the corresponding velocity in the pipe?
Fossil Energy Sources
Published in Anco S. Blazev, Power Generation and the Environment, 2021
The coal transport system will depend on site-specific and project-specific factors and could be a conveyor system running from within the mine site to the coal preparation plant or a rail system. A system of haul roads is also likely to be present. Transporting coal offsite may be accomplished by rail, truck, barge, or some combination thereof. A coal-slurry pipeline also may be used to send coal off-site.
Coal slurry pipelines: A coal transportation method in Kalimantan, Indonesia
Published in International Journal of Mining, Reclamation and Environment, 2021
Humaira A. Jati, Nthati Monei, George Barakos, Michael Tost, Michael Hitch
Transportation of coal using railway is one of the modes that is widely used in several countries such as the United States, Australia, China and India [2–4]. Trucks are also often used, particularly in areas that have not been or cannot be reached by trains or water transportation [3–5]. On the other hand, sticks are an alternative way of transporting large amounts of coal, especially in watersheds. Furthermore, supply of coal through pipelines has been acknowledged since the 20th century, yet in the beginning only for relatively short distances. In the 1950s, pipeline hydraulic coal transportation served as a mature technology widely applied in underground coal mines of China [6]. The United States pioneered the coal-slurry pipeline technology and the first long-distance coal-slurry pipeline was constructed in Ohio in 1957 [7]. In recent years, the long-distance transport of coal by using pipelines has been further developed in developed countries [2,6].