Magnetic separation is a method of mineral separation based on the magnetic difference between minerals in the uneven magnetic field.
At present, many kinds of magnetic separators are used at home and abroad (l) according to the magnetic source of magnetic separators can be divided into permanent magnetic separators and electromagnetic magnetic separators;(2) according to the strength of the magnetic field can be divided into: weak magnetic field magnetic separator, medium magnetic separator, strong magnetic field magnetic separator;(3) according to the separation process of the medium can be divided into dry magnetic separator and wet magnetic separator;(4) according to the type of magnetic field can be divided into constant magnetic field, pulsating magnetic field and alternating magnetic field magnetic separator;(5) according to the body shape and structure, it is divided into belt type magnetic separator, drum type magnetic separator, roller type magnetic separator, disk type magnetic separator, ring type magnetic separator, cage type magnetic separator and pulley type magnetic separator.
Magnetic separator is mainly used for ferrous metal ore dressing - iron ore magnetic separation;Nonferrous and rare metal ore selection -- tungsten and tin separation, copper and molybdenum separation, copper and lead separation;Magnetic separation and recovery of magnetic heavy medium in heavy medium dressing;Removing iron impurities in the dressing of non-metallic mineral raw materials -- kaolin removing iron;Wastewater treatment.
(1) weak magnetic separation of magnetite. The ore processed in dagushan iron and steel company of anshan is anshan type lean magnetite, the raw ore contains 30%~40% iron and the sio2 content is 42%~46%.
(2) hematite, vitrinite, siderite reduction roasting after strong magnetic separation, but also used in ferromanganese ore, wolframite and zirconium concentrate concentrate, ilmenite, high territory and coal
