This mill pulverized the large chunks of ore that came directly from the mine. Edison planned to process 1200 tons of iron ore every twenty hours. The plant had three magnetic separators that could produce a total of 530 tons of refined ore. There was other equipment to re refine what was left over to extract even more ore.
oped a method of separating iron minerals from the iron bearing sand he had observed along the shore of Long Island. After preliminary small scale tests with these sands, he constructed a large plant near Lake Hopatcong, N. J., to beneficiate a low grade magnetite ore and founded the town of Edison, N. J., to provide homes for the workers.
Magnetic separator separates the iron ore feed material into two or more components. If the purpose is to produce a magnetic concentrated iron ore then the other component which is non magnetic is the tailings. In some cases there can also be a possibility of separating the less magnetic third component which is called middlings.
According to their chemical composition, iron ore can be divided into magnetite, hematite, limonite and siderite; The specific magnetic susceptibility of the material is different, and iron ore is divided into strong magnetic and weak magnetic minerals, which also provides a basis for the selection.
The ore is mainly composed of magnetite, hematite, martite, and quartz. It is very difficult to produce a high quality iron ore concentrate by magnetic separation alone for this type of iron ore. The ore is first ground using ball mills down to about 90% 75 μm.
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Magnetic separation is the only effective way of separating the valuable components of iron ore from the diamagnetic inclusions so far as the extractable iron compounds have a high magnetic susceptibility .
magnetic separation. As it is expected, the conventional magnetic separation achieved a very poor separation efficiency for the fine iron ore, produced a concentrate assaying 41% Fe with 43% recovery.
June 10, 2020
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