| 摘要 |
PCT No. PCT/FR94/01121 Sec. 371 Date May 22, 1995 Sec. 102(e) Date May 22, 1995 PCT Filed Sep. 27, 1994 PCT Pub. No. WO95/09052 PCT Pub. Date Apr. 6, 1995The invention relates to aluminium smelters in which the treatment of spent potlinings (carbonaceous products resulting from the demolition of the lining of the walls and bottom of the electrolytic pots) requires a prior reduction of the potlinings into pieces not bigger than a few millimetres in size. The grinding process forming the subject of the invention is characterized in that it includes a crushing operation (12) in which the spent potlinings are reduced into pieces not bigger than 50 mm, a screening operation (16) permitting to separate those drains measuring a few millimetres and constituting the finished product, and a grinding operation (14) permitting to reduce the screen oversize to the finished product dimensions.
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