Magnetic separation and magnetic separator

Magnetic separation is a process in which magnetically susceptible material is extracted from a mixture using a magnetic force. This separation technique can be useful in mining iron as it is attracted to a magnet. In mines where wolframite was mixed with cassiterite, such as South Crofty and East Pool mine in Cornwall or with bismuth such as at the Shepherd and Murphy mine in Moina, Tasmania, magnetic separation was used to separate the ores.

Magnetic separation is used in almost every processing industry to remove ferrous and para-magnetic contamination from process lines, preventing product contamination and damage to machinery.

In chemistry and chemical engineering, a separation process, or simply a separation, is any mass transfer process used to convert a mixture of substances into two or more distinct product mixtures, at least one of which is enriched in one or more of the mixture's constituents. In some cases, a separation may fully divide the mixture into its pure constituents. Separations are carried out based on differences in chemical properties such as size, shape, mass, or chemical affinity between the constituents of a mixture, and are often classified according to the particular differences they use to achieve separation.

When minerals are placed in a magnetic field, there are three reactions which may occur. First, they are attracted to the magnetic field. Second, they are repulsed by the magnetic field. And third, no noticeable reaction to the magnetic field occurs.

Particles that are attracted to the magnetic field are called magnetic. But, there are two classifications of magnetic particles, strongly magnetic particles, such as iron and magnetite, and weakly magnetic particles, such as rutile, ilmenite, and chromite. Strong magnetic particles may be easily separated with a separator having a low intensity magnetic field of 400 - 600 gauss. Paramagnetic particles (weakly magnetic) require a higher intensity magnetic field to separate them, generally ranging from 6,000 to 20,000 gauss.

Magnetic separator is mainly used in wet separating of the fine minerals with strong ferromagnetism. The wet-type drum permanent magnetic separator is mainly suitable for wet separating of the following ores with the sizes less than 3mm, which are magnetite, magnetic pyrite, baking ore, ilmenite and so on. It also can be used for removing Fe procession of coal, nonmetallic mineral and construction materials. According to the customer requirements, we can provide fair current and semi-counter-current types separator with different magnetic strength. And it has advantages of high capacity, easy operation and simple structure.

The magnetic separator of our SBM Machienry is designed to recover ferromagnetic materials. The separator is available in designs and sizes to provide solutions for all applications. The heart of each separator is the magnetic system with its unique design, which has a proven record of highest efficiency.

We produce high-quality high-power magnetic separators for most applications, including bulk, grain, dry powders, damp powders, liquids and syrups, which are used in a vast range of industries. We can provide custom options, as well as fully custom-built magnetic separators, with turnaround and costs little different to standard products.