Magnetic separator lifting magnets

Fig. 3. Suspended magnets, where A = conveyor belt width B = suspension height C = overall height D = distance to magnet centerline and E = location of lift point, (a) Manually cleaned over conveyor mn system, (b) manually cleaned over head pulley, and (c) self-cleaning separator over head...

A simple separator used to recover the magnetic particles consists of a series of disks mounted on a shaft. Each disk has a number of permanent magnets mounted flush with the surface at its perimeter. The disks rotate into and out of the Hquid containing the suspended magnetic material and lift the magnetic particles out of the stream. The magnets are then scraped clean (Eig. 10). Very low residence times are needed for removal of the particles compared to settling or flotation (142). 

Cross-belt magnetic separators are based on the same principle as lifting magnets. Although these units have relatively low capacities, the same unit can produce selective separations with different products by using different pole gaps and field strengths. (See Fig. 19-42.)... 

These seals separate two parts of an apparatus, and they can be broken by a slight mechanical blow. The simplest type is illustrated in Figure 47, //—the tip is broken off by a piece of iron, usually enclosed in glass, dropping under gravity. This weight is moved and lifted with a magnet. 

If a free-atom state (Section 6.3.3) is subject to a magnetic field the (2J + l)-fold degeneracy is lifted so that, as shown in Figure 27, each level specified by the quantum number My is separated from its neighbour by the amount gjpH, where gj is the spectroscopic splitting factor. The value of g can be calculated from a knowledge of the term from which the state arose. 

Since Ms = 1/2 only two energy states are available, which are degenerate in the absence of a magnetic field, but as B increases this degeneracy is lifted linearly as illustrated in Figure 1.1. The separation of the two levels can be matched to a quantum of radiahon through the Bohr frequency condihon ... 

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