2015年11月30日星期一

The 411 on Mining Slurry Pipelines



The mining industryIndustrial Pipes all over the world makes use of slurry pipelines for transportation of mineral concentrate from mineral processing plants situated close to the mine. The ore concentrates are mixed with water, right after which it's pumped into pipelines to a site exactly where the mixture is shipped to other places for further processing activities.
The use of slurry pipelines offers visible financial positive aspects when compared to transport by railway, specially in conditions exactly where mines are situated in incredibly remote regions. Transportation of tailings by way of slurry pipes also decreases effect around the environment. These pipelines are typically combined with existing railway infrastructures, frequently installed above ground, with pipes following the routes from the rail tracks.
Ahead of solids could be transportedBefore mining solidsMining Pipes are ready to be transported, they need to undergo a process of pulverizations, right after which the pulverized material is mixed with water in an effort to kind a paste, or slurry. By way of the slurry pipeline, this substance is then deposited into a mixing tank which contains massive rotating wheels to facilitate the uniform mixing from the water along with the particles. Following this procedure, the slurry is pumped out by way of the pipeline following which it is transported over lengthy distances, powered by unique plungers or piston pumps, aided by gravity and numerous ground level elevation methods.
Fine and coarse slurryThe substance of finely ground strong particles in liquid is known as fine slurry, whereas bigger particles mixed in using the liquid make up coarse slurry. When transporting coarse slurry in pipelines exactly where - as a way to suspend the solids - the velocity needs to become high, substantial abrasion to the pipe also as the pumps can take location, paired with higher energy consumption. For that reason, coarse slurry pipelines are often only economical and practical when used more than shorter distances, typically not significantly additional than a couple of kilometers away in the mine. Conversely, fine slurry is much much less abrasive and may consequently be transported over longer distances with no causing as well a lot abrasive damage for the slurry pipes.
Handling serious abrasionSlurry pipelines are engineered in such a way that abrasion from solids transportation at the same time as corrosion caused by the soil is kept to a minimum. For this objective, most pipelines are coated with high-strength polyethylene. The pipelines are produced to be incredibly powerful with regards to the absorption of kinetic energy of the rough particles which are contained in the slurry, and in terms of their resistance to deformation, preventing harm brought on by the transportation approach.
What are they made of? Slurry pipes are generally created from either coated or bare steel, ranging in size from 80mm -3200mm pipes, having a selection of linings and coatings such as galvanized, polyurethane, polyethylene, epoxy, polypropylene and cement mortar.
Common materials transported in slurry pipelinesMany diverse forms of material might be transported in slurry pipelines such as copper, iron, limestone, lead, coal, phosphate concentrates, nickel, zinc and bauxite. Right after ore processing, tailings from mineral processing plants are also transported by way of these pipelines, for the goal from the disposal of remaining rock particles.Pipe Manufacturers
In the destinationWhen the slurry comes out in the other end on the pipeline, supplies are separated in the slurry by implies of filter presses which extract the water. Following this approach, the water undergoes waste treatment procedures following which it's either returned towards the mine, or disposed of.

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