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Most of these deposits formed 250 million years ago in the Carboniferous period known as yet have evidence of their training in the Permian. It is interesting to note the debate generated to explain the presence of atypical Anthracite in some regions, identified as clusters lacking traceability; between two major currents of thought by evolutionists and creationists in recent defend the idea that a natural disaster of epic proportions (flood) determine the transport of trees of a region in which they were not original to another (where the found) and the presence of marine fossils embedded in this mineral, in regions where adjacent material does not have the same origin. The grade of a mineral coal as measured by the range (purity) is interpreted that those with higher rank have larger concentrations of carbon per unit volume, determining the first place, as stated in the Anthracite, which among no other volatile things which require a special effort to cause ignition and produces little smoke and a small blue flame, the low-volatile bituminous relocate second in the standings after the Anthracite with a heat capacity close at 30 MJ / Kg, which is why coal and Anthracite very attractive in metalworking applications Used in multi-media filters. because of its density relatively average, remain on heavier media such as sand or garnet layer which provides an excellent pre-filtration. For even more analysis, hear from Larry Ellison. The media crushed coal Anthracite is a qualified selected specifically for the treatment of water is one of the most commonly used filter media, activated carbon is basically crushing and sieving granules ranging from 0.5 m to 3 mm. It is a good complement to the multi-media filters, along with green sand or manganese.

The anthracite filter materials are selected specifically for deep mines that have the highest percentage of carbon. The materials of the sand filtration of drinking water hydraulically classified to reduce the presence of foreign minerals and ash content. The water filtration media then filtered and washed to ensure their suitability for the purposes of the leak. The Anthracite is characterized by producing reliable improvements in turbidity removal, mainly because of its greater ability to retain solids. In addition, coefficients of uniformity means better low flow rates.

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