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现在广泛应用的圆鼓磁选机,是由3～4个极性交替的固定磁极组成的。这些磁极是用电磁的或者永久磁铁。磁极的数量取决于所担负的工作。美国至少是用5极磁选机作粗选,用4极磁选机作精选。磁选机的磁场强度一般的表示方法,是指距圆筒表面2时处的磁场强度完全一样。在美国苏必尔湖铁燧岩选矿厂中,根据矿石的粒度来选择磁场强度的大小,现在已经统一起来了。处理的矿石粒度为1/4时时,通常采用700～
Now widely used drum drum separator, is composed of 3 to 4 alternating polarity of fixed magnetic pole. These poles are made of electromagnetic or permanent magnets. The number of poles depends on the work performed. The United States at least uses a 5-pole magnetic separator as a rougher and a 4-pole magnetic separator for selection. Magnetic separator magnetic field strength of the general means that the time from the cylinder surface at 2:00 when the magnetic field strength exactly the same. In the United States Supper Lake Taconite concentrator, according to the size of the ore to choose the size of the magnetic field strength, and now has been unified. Treated ores size of 1/4 hour, usually 700 ~