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gangue breaking ball millscandium

Dec 07, 2020 Coal Gangue 36.78 56.56 0.62 1.95 0.42 0.22 2.10 1.32 In the production process of coal gangue aggregate, the coal gangue was crushed by a jaw crusher, ground by a small ball mill and calcined in a muffle furnace at 700 C for 2 h (Figure 1). Figure 1.

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