Mineral processing is the mechanical and physical process employed to extract ore from gangue minerals or other undesirable materials. Although there are many ways to achieve this each one requires a set of crucial steps. First, you have to physically break massive rock into smaller pieces that can be used in a more efficient manner. Another common method of separating the minerals is by grinding the rocks into smaller pieces. The next step in mineral processing involves adding water to form a mixture which helps separate valuable minerals from the waste. The last step is to dry and remove the valuable minerals.
It is also possible to use large-scale equipment or hand-picking to process minerals. Extracting the ore from the ground is just one aspect of the process. This must be followed with the extraction of the minerals and components which make up the metal.
The most common equipment used in mineral processing plants include jigs, concentrators, flotation cells and autogenous (AG) mills and trommels, shaker tables magnetic separation equipment, and gravity extraction methods.
The creation of many elements, including gold, copper and nickel, is dependent upon mineral processing. While it appears to be an extremely complex process at first mineral processing is actually the process of removing valuable minerals from the earth, then adding a few simple chemicals and separating them in order to extract the desired elements.
Here are some fundamental rules for ensuring the success of mineral processing
Processed ore must be free of waste substances (i.e., gangue). The material must be dry and free of sulfides and soluble salts. It must be in good shape, or easily broken down into pieces that are small enough to allow for treatment.
An acceptable ore should have less sodium sulfide and salts that dissolve than other types. These are the most troublesome types of salt and sulfur that may cause problems during processing. It is recommended that it has large pieces of good circular shapes, to allow them to break into smaller pieces without the need for cutting or grinding equipment.
Comminution involves breaking down ore into smaller pieces. The more efficiently comminution can be done, the more minerals’ surface will be exposed to chemicals. This will result in greater processing. The size of the particles are limited by the equipment used to process minerals The typical range is 5 millimeters to 0.074 millimeters in diameter for particles that pass through a round-hole sieve, but can go up to several decimeters if only the larger portions are important.
A few machines that are used to grind or break rock into smaller pieces includes crushers and mills. Crushers break large pieces of mineral into smaller pieces. There are many kinds of crushers, including crushing machines and impact crushers which use steel teeth that are high-speed for breaking down ore through compressing it. This is usually done in stages with the sizes of specific mineral fractions being reduced gradually.
Mills create ore pulp by grinding the ore on two surfaces that move at various speeds. The surfaces are typically covered with manganese liners, usually manganese steel as it is more durable than any other element of alloying. Manganese steel liners may be difficult to repair or replace when they’ve worn out.
Another stage in mineral processing involves the separation of the valuable minerals from the trash. Two popular methods of separation are magnetic separation and density.
Magnetic separation uses magnets to segregate minerals and the gangue materials. Magnetic separation equipment includes drum-type separators, trommels, and pulsed field (PF) separators. They are used to separate the valuable minerals according to their density, shape, and magnetic properties. The decision to use a particular method is based on many factors, including the rock type (i.e. pure sulfides or clean) as well as the size of the machine and ore characteristics (i.e. crushing is easy or hard crushing) the magnets’ presence or absence in waste or ore streams, and the level of dilution.
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