Everything about Slurry Pipeline totally explained
A
slurry pipeline is used in mining to
transport mineral concentrate from a mineral processing plant near a mine. The concentrate of the ore is mixed with water and then pumped over a long distance to a port where it can be shipped for further processing. At the end of the pipeline, the material is separated from the slurry in a filter press to remove the water. Water is usually subject to a waste treatment process before disposal or return to the mine. Slurry pipelines offer an economic advantage over railroad and much less noise disturbance to the environment, particularly when mines are in extremely remote areas.Pipelines have to be suitably engineered to resist abrasion from the solids as well as corrosion from the soil. Some of these pipelines are lined with High Density Polyethylene.
Typical materials that are transferred using slurry pipelines include
coal,
copper,
iron, and
phosphate concentrates,
limestone,
lead,
zinc,
nickel,
bauxite and
oil sands.
Slurry pipelines are also used to transport
tailings from a mineral processing plant after that the ore has been processed to dispose of the remaining rocks or clays.
For oil sand plants, a mixture of oilsand and water may be pumped over a long distance to release the bitumen by attrition. These pipelines are also called
Hydrotransport Pipelines.
One of the longest slurry pipeline was the ETSI pipeline, to transport coal over a distance of 1036 miles (1675 km). It was commissioned in 1979. It is anticipated that in the next few years some long distance slurry pipelines will be constructed in Australia and South America where mineral deposits are often a few hundred kilometers away from shipping ports.
Slurry pipelines are also considered to
de-silt or remove silts from deposits behind dams in man-made lakes. After the Katrina disaster there have been proposals to pump silt to the shore and remedy the environment. Proposals have also been made to de-silt
Lake Nubia-Nasser in
Egypt and
Sudan by
slurry pipelines as Egypt is now deprived of 95% of its
alluvium that used to come every year. These projects to remedy the environment will be very beneficial to the damage caused by large dams and man-made lakes.
References : Baha Abulnaga - "Slurry Systems Handbook" - McGraw-Hill 2002.
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