The invention relates to a method for producing aluminium anode by utilizing waste cathode carbon blocks of an aluminum electrolytic cell, belonging to the technical field of non-ferrous metal metallurgy and environmental protection. The method comprises the following steps: (1) crushing the waste cathode carbon blocks of an aluminum electrolytic cell and separating the steel bars, the refractory materials, the electrolyte, etc.. (2) the waste cathode carbon block will be coarsely broken. (3) flour milling becomes powder less than 0.075 millimeters. (4) the impurities contained in the waste cathode carbon block in the aluminum reduction cell are separated by flotation, acid, alkali and acid base combined methods. (5) dry cathode carbon block and dry powder for the treated aluminum reduction cell. (6) according to the formula of aluminum anode production, the ingredients are required. (7) the aluminum anode production system is used as the powder material to produce the pre baked anode. The invention of the aluminum electrolysis waste cathode carbon block for aluminum anode mixture powder, the aluminum electrolysis waste harmless treatment and comprehensive utilization of cathode carbon block, to reduce the use of petroleum coke, save resources and reduce the cost of production.
【技术实现步骤摘要】
【技术保护点】
１．一种利用铝电解槽废阴极炭块生产铝用阳极的方法，其特征在于包括如下步骤：（１）分捡：将铝电解槽废阴极炭块破碎，分捡出其中钢棒、耐火材料、电解质等；（２）粗碎：将经过分捡的铝电解槽废阴极炭块利用破碎机破碎至１０－５０ｍｍ粒度料；（３）磨粉：经过粗破的铝电解槽废阴极炭块通过磨粉机破碎成粒度小于０．０７５毫米的粉料；（４）除灰：采用浮选法、酸法、碱法、酸碱联合法分离磨粉机磨好的铝电解槽废阴极炭块粉料中所含氟化钠、氟化铝等杂质；（５）干燥：上述经过处理的铝电解槽废阴极炭块粉料通过干燥机进行干燥处理，使水分达到预焙阳极配料用原料水分含量要求；（６）配料：干燥后的铝电解槽废阴极炭块粉料按照铝用阳极生产配方要求进入铝用阳极生产配料系统做为粉料（≯４５％）进行配料；（７）铝电解槽废阴极粉料加入配料系统后，配料、混捏、成型、焙烧工序均按现有预焙阳极生产配料和工艺要求进行。
【技术特征摘要】
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