The majority of slurry transport applications are short-distance in-plant installations, mainly in the minerals industry. For example with most ores, after the concentration process, a fine-grained tailings slurry is transported by pipeline, sometimes as far as several kilometers, to disposal areas. Great savings of energy and water can be obtained at concentrators if the tailings slurry is thickened more effectively and water is reused directly instead of being transported the long way around the disposal area. A recent study, Sellgren (1983), shows that large amounts of heating energy can be recovered using a heat pump arrangement. The potential savings in Swedish mines was estimated to be about 10 to 20 GWh per year at every concentrator, the greatest part of which will be savings in oil.