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Manganese selection method

Source: website    AddTime: 2012/10/24    Hits:     Label:


The vast majority of China's manganese ore belongs to the poor must be carried out mineral processing.However, the majority of manganese ore is fine-grained or micro-fine cloth inlay, and a considerable number of high phosphate, high iron ore and a total (with) wholesome metal, hence the great difficulty in mineral processing.At present, the commonly used method for manganese ore dressing machinery selection (including washing, screening, re-election, strong magnetic separation and flotation), and pyro-enrichment, chemical processing method.
1. Washing and screening
Washing is the use of water washing or additional mechanical scrubbing to separate ore and mud.Common equipment washing screen, cylinder washing machineand trough-type washing machine.
Washing mining operations often associated with screening, such as the shaker directly flush cleaning or washing machine to obtain the ore (net ore) to sendshaker screening.Screening can be used as an independent operation, separation of different particle size and taste of the product supply to use for different purposes.
2. Re-election
Currently re-election only for sorting simple structure, particle size coarse cloth embedded manganese ore, especially for the oxidation of high density manganese.Common methods of heavy media beneficiation, ore dressing and shaking jig beneficiation.
At present, China dealing with manganese oxide process, the general is broken ore to the 6 ~ 0mm or 10 ~ 0mm, and then grouped for jigging coarse level and fine level of delivery Shaker election.Equipment, mostly Haz Reciprocating Jig and 6-S-type shaker.
3. High intensity magnetic separation
Manganese compound belongs to a weak magnetic minerals;than the susceptibility X = 10 × 10-6 ~ 600 × 10-6cm3 / g;, in the magnetic field strength Ho = 800 ~ 1600kA / m (10000 ~ 20000oe) of the strong magnetic field magnetic separatorcan be to be recovered, the general can improve the grade of 4% Manganese 10%.
As the magnetic operation of simple, easy to control, strong adaptability, can be used for sorting a variety of manganese ore, manganese ore dressing in recent years has been dominated.New types of coarse, medium and fine-grained magnetic machine has been developed and successfully.At present, the domestic manganese ore is the most widely tablets strong magnetic separator, coarse and fine strong magnetic separator is gradually applied, micro-fine strong magnetic separator is still in the testing stage.
4. Re - Magnetic
Currently have been converted into a new and heavy - Magnetic factory has Citylink Fujian, Guangxi, lead, manganese, etc. Jingxi and the next mine.If Liancheng Manganese weight - magnetic separation plant, which mainly deals with the leaching-type oxidation of manganese ore, using AM-30 Jig handle 30 ~ 3mm of washed ore, manganese available to more than 40% of high-quality manganese ore, and then handling the election, after impurity removal can be used as battery-manganese powder raw material.Jig tailings, and less than 3mm diameter washed ore, after grinding to less than 1m, with strong magnetic separator selection, manganese ore grade to raise the 24% ~ 25% to 36% ~ 40%.
5. Magnetic - Flotation
Currently used magnetic - the only Zunyi manganese flotation process.Mine is a manganese carbonate-based low-manganese, phosphorus, manganese high-speed rail.
According to industry tests, using rod mill grinding process -ball stage grinding, size of equipment are φ2100mm × 3000mm wet mill. Strong magnetic separation using shp-2000-type magnetic machine, flotation machine is mainly used CHF-type inflatable flotation machine.After years of production tests, good performance, it is suitable for application in Zunyi manganese ore-dressing.Magnetic - flotation process successfully tested and applied in production, marking China's manganese deep-election has been a big step forward.


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