2013-12-24 · Calculation 2: If 125(μm) = 84.84% x(μm) = 80% x= 80x 125 84.84 = 117.9 μm at 80% Table 3 below shows the sieve analysis of the feed of test ore to Ball mill. Table 3: The feed of test ore to Ball mill. Sieve size range (μm) ... guide for designing grinding plant for Birnin- Gwari iron ore in northern Nigeria. REFERENCES Battey M.H (1981 ...

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Read More2019-12-13 · such as iron ore, additives and binders. 2.2.1 Pre-treatment process of Iron Ore Fines In the pre-treatment process, iron ore fines are ground into finer size, suitable for green ball formation. Dry or wet grinding process is adopted for grinding the iron ore fines. In dry grinding process, equipment i.e. drier, ball mill,

Read More2012-8-16 · which is free to move inside the mill, thus comminuting the ore particles. The grinding medium may be steel rods, or balls, hard rock, or, in some cases, the ore itself. In the grinding process, particles between 5 and 250 nun are reduced in size to between 10 and 300 pin. All ores have an economic optimum mesh of grind which will depend on many

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Read MoreThe new approach is adapted to identify the retention time (RT) of the iron ore in the mill, and the total RT taken for the blend sample in the Bond’s ball mill is considered as the reference grinding time for milling in the Laboratory Ball Mill (LBM). The desired narrow PSD (− 150/+ 10 µm) with acceptable hematite liberation is achieved ...

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