Mineral processing refers to the process of separating the valuable minerals from gangue veins and extract as much valuable mineral as it can. There are tens of minerals contained in the rock or vein in different forms, thus various processing technologies are applied for different processing. After many years’ development of the mineral processing technology, there are common processing technology for common mineral ores. The complete mineral ore processing plant always includes crushing, grinding and beneficiation stages, and the beneficiation stage consists of different technology, mainly gravity separation, flotation, magnetic separation, chemical processing, etc. Prominer can customize the suitable technological process based on the mineral characteristics and supply full process solution.
For most of the mineral ores, due to the geological evolution, they are contained in or stick to rock veins. After mining the mineral ore is mined from underground, then the first procedure is to crush the big lump rock to small size for further processing. During this stage normally scrub washing will be applied for materials with much mud. Besides, grinding is a very important stage to liberate the mineral ore from the gangue veins, which makes subsequent beneficiation sufficiently.
Gravity separation is the traditional method for mineral beneficiation and irreplaceable when process minerals such as tungsten, gold, iron, tin, chrome, tantalum, niobium, coal, barite, etc. Because of its advantages such as low running cost, environmental protection and special effects on some minerals, it is still very popular at present. There are different types of equipment for gravity separation like jigger, spiral chutes, shaking table, etc.
Flotation is a typical mineral ore processing method based on the difference of the physical and chemical property and floatability between valuable minerals and veins. Technically, flotation can be used in almost all of the mineral separation. It is especially efficient to process metal and non-metal minerals like copper, pyrite, iron, gold, quartz, etc.
Magnetic separation takes advantage of the magnetic difference of different minerals and veins and separate under magnetic effect. It is not only used in the concentration process for magnetite, hematite, manganese, ilmenite, but also used for iron removal operation for coal, nonmetalliferous ores as well as construction material. It is the main beneficiation method in iron ore separation. The process of magnetic separation is simple but with high production capabilities, and it is also with advantages including low production cost, high efficiency and no environmental pollution.
Based on the chemical property differences among mineral compositions, Chemical processing utilizes chemical methods to change the mineral’s property to make the target component or impurity component selectively dissolved in the leaching solvent to achieve the purpose of separation. Chemical processing has been successfully used for processing many different minerals like gold, copper, graphite, lead, zinc, aluminum, silver, etc.