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General Industrial Index of Metallurgical Manganese ore

2020-07-10 15:51

Introduction：General Industrial Index of Metallurgical Manganese ore natural types Industry classification grade (Mn)% (Mn+ Fe)% (Mn)/ (Fe) Per 1% Manganese allowable Phosphate cont (SiO 2 )% Boundary grade average grade Manganese oxide ore Manganese r

natural types	Industry classification	grade	ω(Mn)%		ω(Mn+ Fe)%	ω(Mn)/ ω(Fe)	Per 1% Manganese allowable Phosphate cont	ω(SiO₂)%
natural types	Industry classification	grade	Boundary grade	average grade	ω(Mn+ Fe)%	ω(Mn)/ ω(Fe)	Per 1% Manganese allowable Phosphate cont	ω(SiO₂)%
Manganese oxide ore	Manganese rich ore	Ⅰ		40		≥6	≤0.004	≤15
		Ⅱ		35		≥4	≤0.005	≤25
		Ⅲ		30		≥3	≤0.006	≤35
	poor manganese ore		10～15	18
	Iron manganese ore	Ⅰ		25	≥50		≤0.2%(total phosphorus	≤25
		Ⅱ		20	≥40		≤0.2%( total phosphorus)	≤25
		Ⅲ	10	15	≥30		≤0.2%( total phosphorus)	≤25
manganese carbonate	Manganese rich ore			25		≥3	≤0.005%	≤25
	poor manganese ore		10	15
	Iron manganese ore		10	15	≥25		≤0.2%( total phosphorus)	≤35
	Manganese ore		8	12	alkaline ore
Note :1, The industrial index of manganese carbonate ore(The main gangue is calcite with alkalinity ≥ 0.8, the mass fraction of burning loss is more than 18%) can be used in the evaluation of oxidized grey ore. gray oxidized ore 2, Self-fluxing, alkaline manganese ore can reduce the manganese crystal level index of rich ore. 3, When the burning loss of manganese carbonate ore is high and the mass fraction of manganese is slightly lower than 25%, the manganese content after calcination can reach the standard of manganese oxide rich ore, and this kind of manganese carbonate ore can also be considered as manganese rich ore. Technical indicators of ore mining: Minimum mining thickness is from 0.5 to 0.7m; The rock eliminating thickness of ore is from 0.2 to 0.3; Net ore content (mass fraction)≥15%.

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