Most of the Chinese manganese ore beneficiation must deal with is from poor sources. However, most of the manganese ore is fine or embedded in micro-fine cloth, and a considerable number of them contain high levels of phosphate, iron, total (with) wholesome metal, and the equipment still includes jaw crushers, ball mills, etc., making it very difficult to process. At present, the commonly used method for manganese ore dressing machinery is election (including washing, sieving, gravity separation, high-intensity magnetic separation, and flotation) and the fire for enrichment, chemical processing method.
Washing and screening
Washing is used to wash or scrub ore and clay with water for additional mechanical separation. Commonly used devices are washing sieves, cylinder washing machines, washing machines, and troughs. Washing operations are often associated with screening, such as directly flushing the shaker for cleaning or washing the ore (net mine) sent to the shaker for screening. Screening is an independent operation that separates different sizes and grades of products for different purposes.
Re-election
Re-election is currently used only for simple sorting of coarser cloth of manganese ore, especially for the oxidation of high-density manganese ore. Common methods of heavy media beneficiation, ore dressing, and shaking jig beneficiation. At present, China deals with the oxidation of manganese by breaking ore to 6 ~ 0 mm or 10 ~ 0 mm and then grouping it for jigging coarse level and fine level of delivery shaking election. The equipment mostly used is the Haz reciprocating jig and the 6-S type shaker.
High Intensity Magnetic Separation
Manganese mineral is weakly magnetic minerals with susceptibility X = 10 * 10 -6 ~ 600 * 10 – 6 cm 3 / g in the magnetic field intensity Ho = 800 ~ 1600 kA / m (10000 ~ 20000 oe). The strong magnetic field sorting machine can be used for recovery, and it can generally improve the grade of 4% Manganese 10%. Magnetic separation is simple, easy to control, and adaptable, and can be used for sorting a variety of manganese ore. It has dominated manganese ore dressing in recent years. New types of coarse, medium, and fine magnetic machines have been developed and successfully applied. Currently, the most commonly used strong magnetic separator for manganese in China is the particle one, and coarse and fine intensity magnetic separators are gradually being applied, while micro-fine intensity magnetic separators are still in the testing stage.
Remagnetic
Currently, a new and important magnetic separation plant has been converted, such as Fujian Lin Shing, Guangxi lead, manganese mines Jingxi, and lower. If Liancheng weight-magnetic separation plant is dealing mainly with leaching oxide ore, with AM-30 jig handling 30 ~ 3mm of washed ore, manganese available for over 40% of high-quality manganese ore, and then after handling impurities selecting, manganese powder can be used as battery materials. Jig tailings and less than 3 mm diameter grinding to clean mine after less than 1 m, with a strong magnetic separator selection, manganese ore grade increased 24% to 25% to 36% ~ 40%.
Magnetic-Flotation
Currently used magnetic-flotation process is just Zunyi manganese flotation. The mine is mainly low manganese carbonate manganese, phosphorus, iron ore. According to industry tests, the rod mill grinding process is used with milling stage grinding, and the equipment size is 2100 mm * 3000 mm wet-grinding machine. Intensity magnetic separation with shp-2000-type magnetic machine, and flotation machine is mainly used CHF-type inflatable flotation machine