Manganese oxide and manganese carbonate ore dressing process

(a) oxidation manganese ore
Is given priority to with secondary oxidized manganese ore weathering deposits, there are some sedimentary type and hydrothermal type deposit of primary and secondary oxidation manganese ore. Manganese ore in the ore owner if water psilomelane, pyrolusite and manganese, etc.; Gangue mainly silicate minerals and carbonate minerals; Often associated with iron, phosphorus and nickel, cobalt and other components.
Oxide manganese ore beneficiation method is given priority to with re-election. Weathering type oxide manganese ore often contains large amount of slime and powder grinding, washing a re-election method is used on the production. Undressed ore after washing is divided into the slime, net income of mine, some can be used as a finished product ore, some need to use jig and shaking table to choose again. Washing overflow sometimes need to use re-election or magnetic separation methods such as further recycling. Some native oxide manganese ore deposit type, because of mining dilution, heavy media) has been used in production and jigging re-election eliminate gangue, lump ore concentrate.
Iron oxide manganese ore stone, iron ore if owner limonite. Iron and manganese is difficult to use gravity separation, flotation or high-intensity magnetic separation, need the reduction roasting magnetic separation method. Washing industry has adopted a reduction roasting magnetic separation, gravity separation process.
(ii) carbonate manganese ore
Sedimentary type carbonate manganese ore stone, main manganese content is rhodochrosite, calcium rhodochrosite, containing manganese calcite and ling ferromanganese ore, etc.; The gangue silicate and carbonate minerals; Often associated impurities such as sulfur and iron. General complex ore, manganese content fine disseminated extent to a few microns, is not easy to disintegrate, often difficult to get high concentrate grade.
Carbonate manganese ore beneficiation production practice less, magnetic separation were studied, such as heavy media separation and flotation method. Some sedimentary type carbonate manganese ore, sulfur industry: adopted the carbonaceous shale, pyrite, and manganese content in the order of priority in flotation process. Contains some hydrothermal type lead and zinc carbonate manganese ore, adopted a magnetic separation flotation process. Some sulphur rich manganese ore, manganese ore owner if sulphur manganese ore, roasting method can be used in addition to sulfur. Some rich manganese carbonate production also by roasting method, in addition to volatile component, finished product ore.
Manganese oxide and manganese carbonate stone contain some hard ore, manganese and iron, phosphorus, or gangue close symbiosis, very fine disseminated extent, sorting, consider using smelting method processing. For example, the processing of high phosphorus manganese ore of iron rich manganese slag process, production of active manganese dioxide nitric acid leaching method and the production of metal manganese electrolysis method for industrial production. In addition, in the two calcium sulphate method and bacterial leaching method, etc.


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