Q:

What are the uses of magnetite?

A:

Quick Answer

Magnetite increases the density of most mixtures in which it is present. This property allows magnetite to be used in the manufacture of heavy concrete, water filtration, coal mining, landscaping and production of certain iron-based chemicals.

Continue Reading

Full Answer

When magnetite is added to a concrete mix, it produces heavy concrete, which is twice as dense as standard concrete. Heavy concrete is widely used in buildings that require protection from radiation, such as nuclear power plants, X-ray facilities and uranium mining sites. Heavy concrete retains heat more efficiently than standard concrete and can be used in building houses to retain solar heat.

Magnetite can also be used in water filtration systems. A water filtration system with magnetite has a more aggressive backwash in the cleaning phase, as well as the ability to recover the magnetite by using a magnet.

It is also used in coal mining operations as a slurry with water to remove the heavier impurities by allowing the less dense coal to float to the surface. The magnetite can be reused in this process 90 percent of the time.

Magnetite is also used as a source of iron to manufacture iron-based chemicals and fertilizers. Ferric chloride and ferric sulphate are manufactured with magnetite as one of the starting materials. These chemicals are effective in clarifying raw water in water purification plants. The dark, glossy nature of magnetite ore has led to its use in landscaping as accent rocks.

Learn more about Geology
Sources:

Related Questions

  • Q:

    Where does mineral oil come from?

    A:

    Mineral oil consists of mixtures of hydrocarbons obtained from petroleum by distillation. Mineral oil is most commonly used as a lubricant in the manufacture of cosmetics and in medicine as a laxative.

    Full Answer >
    Filed Under:
  • Q:

    What are some common uses of manganese?

    A:

    The most common use of manganese is as a component of steel, according to the Royal Society of Chemistry. Manganese is too fragile to use alone as a pure metal.

    Full Answer >
    Filed Under:
  • Q:

    What is the porosity of Giallo Fiorito granite?

    A:

    Giallo Fiorito granite is a natural granite product with a porosity of 10.00MPa, a density of 2.63 g/cm cubed and a water absorption rate of 0.26. Granite has different porosity levels, with lighter colors being more porous. A quality sealer is usually recommended for granite surfaces to prevent possible staining.

    Full Answer >
    Filed Under:
  • Q:

    What is the density of a small rock?

    A:

    Rocks vary significantly in density due to differences in their composition and histories. According to Andrew Alden, writing for About.com, sedimentary rocks tend to be less dense than igneous rocks of the same mass. Whether or not a rock is small has no bearing on density without a set mass.

    Full Answer >
    Filed Under:

Explore