Magnetizing roaster

Figure 19. Semi-conveying two-phase fluid-bed magnetizing roaster.

Figure 54 shows diagramatically the two-phase magnetizing roaster for low-grade iron ores—dilute-phase ore preheating in an upper section of i.d. 1,050 mm, and dense-phase reduction with producer gas in a lower section of i.d. 825 mm. The roasting consisted of a mild reduction with producer gas... 

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