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     kï¼ä¸ŽçŸ¿çŸ³æ€§è´¨æœ‰å…³çš„缩分系数。
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CIMMå…¬å¸è¿›è¡Œå¦‚ä¸‹å¯¹æ¯”è¯•éªŒç ”ç©¶ï¼šæŠŠä¸€æ‰¹ï¼10mm的金矿石分æˆä¸¤ç»„,æ¯ç»„30kg。一组由ï¼10mm直接缩分到1kg,å¦ä¸€ç»„å°†30kgæ ·å…ˆç”±ï¼10mm盘磨到ï¼28ç›®åŽï¼Œå†ç¼©åˆ†æˆ1kg。然åŽä¸¤è€…用åŒæ ·æµç¨‹åŠ 工到ï¼150目,用åŒä¸€åˆ†æžæ–¹æ³•ã€‚其结果和精密度如下表所示。
表 金矿石缩分过程对测定精密度的影å“
   测得矿石ä¸é‡‘çš„å¹³å‡å“ä½Â   (g∕t) |
精密度(±2δ*)(g∕t) | |
    30kgï¼10mm矿石直接缩æˆÂ  ï¼10mm 1kg |
     30kgï¼10mmçŸ¿çŸ³ç ´ç¢Žè‡³ï¼28ç›®åŽç¼©æˆ1kg | |
4.1 |
±1.5 |
±0.21 |
3.2 |
±1.0 |
±0.15 |
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