Magnetic separators are commonly used to separate magnetite iron ore. They directly separate magnetite sand or sea iron sand. For rocky magnetite, crushing and grinding is required first before magnetic separation. Magnetic separators consist of a drum where magnets are embedded to attract magnetic materials from non-magnetic tailings. For weaker magnetic ores like hematite and limonite, both magnetic separation and gravity separation are used, though gravity separation is more common due to lower costs and higher throughput. The document provides examples of iron ore beneficiation projects from 2011 that improved iron grades using magnetic separation and other methods.

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For magnetite iron ore, magnetic separator is the first chosen iron separator that used to get high grade magnetite iron concentrate.
The magnetite sand or sea iron sand in Southeast countries is usually upgraded by magnetic separator directly. And for rocky
magnetite, crusher, even ball mill will be needed before magnetic separation. And the magnetic separator can be as the picture
below:
For weak magnetic iron ore like hematite, limonite, specularite and siderite, both intensity magnetic separation and gravity
separation shall be adopted. However, gravity separation is usually chosen because intensity magnetic separation needs a large
investment with small handling capacity of each magnetic separator, while gravity separation can deal much more with large feeding
size and excellent efficiency.
The following table is about several iron beneficiation projects in 2011:
magnetic separator
magnetic sep
Iron ores in nature a
specularite, pyrite, s
beneficiation method
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Ore Type Country Original grade of TFe Final grade of TFe Capacity
Limonite Kuantan, Malaysia 47% 65-68% 40t/h
Specularite Perak, Malaysia 50% 68% 30t/h
Specularite Hainan, China 46% 52-57% 400t/h
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