Flotation machine flotation process, the ups and downs of the mineral almost nothing to do with the mineral density. Such as chalcopyrite and quartz, former density of 4.2, which is 2.68, but the heavy mineral chalcopyrite easily floating, the quartz instead settle to the bottom. The study found that the mineral flotability their affinity for water size, any affinity with water, mineral water wetting difficult to be attached to the bubbles on the difficult floating. Affinity with water, small, difficult to be wetted by water, minerals, easy to float. Therefore we can say that the flotation is mineral water wettability different beneficiation method. The general nature of the mineral easy floating with difficult floating flotability called minerals. Flotation is the use of mineral flotability difference to the separation of minerals. In modern flotation process, the application of flotation reagent is particularly important because the treatment by flotation reagent can change flotability minerals, the minerals can be selectively attached to the bubbles to float, so as to achieve the purpose of beneficiation.
The flotation of the flotation machine is one of the most important in the processing production line beneficiation methods. According to statistics, 90% of non-ferrous metal ore flotation processing. In addition, the flotation method is also widely used in the sorting of rare metals, precious metals, ferrous metals, non-metallic, as well as coal and other mineral raw materials. In recent years, at home and abroad also flotation water purification, sewage treatment. Visible the flotation application range is quite extensive. Compared with other beneficiation methods, fine-grained disseminated ore flotation sorting, better and more economical. Flotation method is also commonly used for sorting coarse or fine fraction patchy disseminated ore.
The flotation process includes several basic job?
Flotation and other beneficiation methods, materials preparation work to do sorting, ie ore after grinding and classification to achieve a suitable flotation concentration fineness. In addition, flotation, there are a few basic operations:
Pulp adjustment and flotation agent to join
Its purpose is to cause the difference of the nature of the mineral surface, i.e. to change the wettability of the mineral surfaces, to adjust the selectivity of the mineral surfaces, so that some of the mineral particles can be attached to the gas saturation, while others can not be attached to the bubble.
Agitation and caused a large number of bubbles
Stirring action by means of inflatable flotation machine, resulting in the dispersion of air in the pulp and the formation of a large number of bubbles, or procure to dissolve the pulp in the air to form micro-saturated precipitation.
The ore particles to the air bubbles selectively adhered, which is the basic behavior in the flotation process.
Mineralization foam layer formation and scrapings
Mineralized bubbles rise to the lower part of the flotation cell formation in the surface of the slurry mineralization saturated foam layer, useful minerals enriched foam scrapings, and concentrate (ore). Not an end in minerals remain in the flotation tank, so as to achieve the purpose of separation. Mineral flotation float is usually useful minerals, such flotation process called positive flotation Conversely, float mineral gangue, called reverse flotation (or reverse flotation).
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