2. Lime industry
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Crushing of raw materials
Limestone is crushed to a maximum size of 250 mm using jaw crushers coupled with screens. Product grain sizes range from 15 to 150 mm for vertical kilns and from 5 to 40 mm for rotary kilns. In most installations, products smaller than 10 mm are not used to manufacture lime, but can be recycled in the form of carbonates.
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Quicklime grinding
Quicklime is ground to grain sizes of less than 2 mm using unirotor or birotor articulated hammer mills, which process less than 120 mm kiln output. The result is a product in which 70% by mass of the particles exceed 80 µm. Elements coarser than 2 mm are screened.
Ball mills are used to prepare fine lime
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Lime industry
Mechanical preparation of pulverized coal
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