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How to separate iron oxide to get iron concentrate

2023-04-20 Xinhai (245)

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The process of separating iron oxide to obtain iron concentrate varies depending on the type of iron ore and the impurities present in it. However, some of the common methods for separating iron oxide from iron concentrate include:

  1. Magnetic separation: This process involves using a magnetic field to separate magnetic particles, such as iron oxide, from non-magnetic ones. The iron ore is crushed and ground into a fine powder, and then passed over a magnetic drum. The magnetic particles are attracted to the drum and separated from the non-magnetic particles.

  2. Froth flotation: This process involves using chemicals and air to separate the iron oxide from the rest of the minerals in the ore. The crushed ore is mixed with water and a frothing agent, and then air is bubbled through the mixture. The frothing agent helps to create a foam on top of the mixture, which contains the iron oxide particles. These particles are then separated from the rest of the minerals.

  3. Gravity separation: This process involves using the difference in density between the iron oxide and other minerals in the ore to separate them. The crushed ore is fed into a tank where water is added to create a slurry. The slurry is then passed over a series of inclined tables, and the heavy iron oxide particles settle to the bottom, while the lighter minerals are carried away by water.

  4. Electrostatic separation: This process involves using an electric field to separate charged particles. The crushed ore is fed into a machine that generates an electric field. The iron oxide particles become charged and are attracted to one electrode, while the non-magnetic particles are attracted to the other electrode. The two sets of particles are then separated.

The equipment needed for these processes varies depending on the specific method used and the scale of the operation. It can range from simple hand tools for small-scale operations to large-scale machinery and processing plants for commercial operations.


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