1. What is gravity beneficiation?
Gravity separation, known as gravity beneficiation, is a mineral processing method that separates minerals according to their different densities. In addition to various gravity concentration equipment, there must be a medium (air, water, heavy liquid or heavy suspension) when conducting gravity separation. In the gravity concentration process, mineral particles will be applied force by gravity (if in the centrifugal force field is mainly centrifugal force), the mechanical force exerted by the equipment and the force of the medium, the proper combination of these forces will make the different density of the particles produce different movement speed and trajectory, and ultimately they can be separated from each other.
2. What are the characteristics and applications of gravity beneficiation?
Gravity separation method has the characteristics of simple equipment structure and low operating cost, so it can widely be used when the conditions are suitable. The main applications of gravity concentration are,
1. The separation of gold, platinum and other precious metals.
2. Sorting of tungsten and tin ores.
3. In the treatment of rare metal elements containing minerals in the sand ore is very common, such as zirconium, titanium minerals containing the separation of the seashore sand ore;
4. Hematite, limonite separation
5. Separation of manganese ore.
6. Separation of fine coal and gangue in coal processing plant.
7. Separation of some non-metallic minerals and veinstones, such as the separation of asbestos, mica, kaolin, seafoam and diamond, etc.
8. For non-ferrous metal ores such as copper, lead and zinc, which are mainly treated by flotation, preenrichment by gravity concentration is also a common method.
9. Gravity concentration by particle size sorting process such as classification, desliming, etc., almost in all mineral processing plants are indispensable operations.