| 摘要 |
A refiner disc (28, 30) employing sharply tapered refiner bars (50, 62) wherein the upper portion (52, 64) of at least one side (58, 72) tapers inward at thirty to sixty degrees from the radial plane (34, 53). The tapered refiner bars tend to wear sharp. A further embodiment employs refiner disc bars (78) which have a substantially narrower bar forming the upper portion (82) of a standard, substantially rectangular bar.
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