One dimensional nanofibers based separator received much attentions in recent years, as they have small pore size, high porosity and can be directly used in LIB [8, 11]. Nanofibersbased separator can be produced by many methods, such as meltblown , wet laid [17, 18], Vacuum filtration [19, 20], and electrospinning [21, 22].
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At these mines a device called a Wetherill's Magnetic Separator (invented by John Price Wetherill, 1844–1906) was used. In this machine the raw ore, after calcination was fed onto a moving belt which passed underneath two pairs of electromagnets under which further belts ran .
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