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| Notation | Description |
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| Particle percentage of the th size fraction in the ball mill overflow |
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| Particle percentage of the th size fraction in the Feed ore |
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| Rate of the first classifier recycle |
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| The efficiency of the first spiral classifier |
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| The mean residence time |
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| The internal concentration in ball mill |
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| The solid flow of feed ore |
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| The water addition of the first classifier recycle |
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| The classifier water addition |
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| The breakage distribution function |
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| The breakage rate function |
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| The particle with the th size |
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| The particle percentage of the th size in the first classifier overflow |
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| The unit size of the particle |
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| First-stage overflow |
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| Ball filling rate |
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| Parameters of the first-stage classifier overflow size fraction distribution |
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| The efficiency of the first spiral classifier |
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| The particle size fraction after correction separation |
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| The separation accuracy |
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| The intermix index |
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| The corresponding key parameters to the efficiency of the second spiral classifier |
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| Four key parameters to control the breakage rate function |
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| The minimum and maximum particle sizes |
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| Parameters of feed ore size fraction distribution |
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| The cumulative particle percentage less than the th size fraction in feed ore |
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| The particle percentage of the th size fraction in the second classifier overflow |
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| The efficiency of the second spiral classifier |
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