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Preparation method of prebaked anode
The invention relates to the field of carbon anodes, in particular to a preparation method of a prebaked anode. The preparation method comprises the following steps: crushing calcined petroleum coke to obtain aggregate; grinding the aggregate, and then adding the graphitized waste cathode powder to obtain powder; mixing the aggregate and the powder to obtain a dry material; adding asphalt into the dry material, and roasting to obtain a prebaked anode; wherein the mass ratio of the graphitized waste cathode powder to the dry material is 0.05-0.2; the powder comprises graphitized waste cathode powder and calcined petroleum coke powder; the graphitized waste cathode powder is used for replacing part of calcined petroleum coke, meanwhile, the mass ratio of the graphitized waste cathode powder to powder is controlled, the high conductivity of the graphitized waste cathode powder is used for reducing the resistivity of a pre-roasted anode, the quality of a carbon anode is improved, meanwhile, recycling of the aluminum electrolysis waste cathode is achieved, and the energy consumption is reduced. And the problem of insufficient high-quality raw materials of the carbon anode is relieved.
本申请涉及炭素阳极领域，尤其涉及一种预焙阳极的制备方法；所述制备方法包括：破碎煅后石油焦，得到骨料；对骨料进行研磨，后加入石墨化废阴极粉，得到粉料；混合骨料和粉料，得到干料；向干料中加入沥青，并进行焙烧，得到预焙阳极；其中，石墨化废阴极粉和干料的质量之比为0.05～0.2；粉料包括石墨化废阴极粉和煅后石油焦粉；利用石墨化废阴极粉替代部分煅后石油焦，同时控制石墨化废阴极粉和粉料的质量之比，利用石墨化废阴极粉的高导电性降低预焙烧阳极的电阻率，提高炭素阳极的质量，同时实现铝电解废阴极的再利用，缓解炭素阳极的优质原料不足的问题。
Preparation method of prebaked anode
The invention relates to the field of carbon anodes, in particular to a preparation method of a prebaked anode. The preparation method comprises the following steps: crushing calcined petroleum coke to obtain aggregate; grinding the aggregate, and then adding the graphitized waste cathode powder to obtain powder; mixing the aggregate and the powder to obtain a dry material; adding asphalt into the dry material, and roasting to obtain a prebaked anode; wherein the mass ratio of the graphitized waste cathode powder to the dry material is 0.05-0.2; the powder comprises graphitized waste cathode powder and calcined petroleum coke powder; the graphitized waste cathode powder is used for replacing part of calcined petroleum coke, meanwhile, the mass ratio of the graphitized waste cathode powder to powder is controlled, the high conductivity of the graphitized waste cathode powder is used for reducing the resistivity of a pre-roasted anode, the quality of a carbon anode is improved, meanwhile, recycling of the aluminum electrolysis waste cathode is achieved, and the energy consumption is reduced. And the problem of insufficient high-quality raw materials of the carbon anode is relieved.
本申请涉及炭素阳极领域，尤其涉及一种预焙阳极的制备方法；所述制备方法包括：破碎煅后石油焦，得到骨料；对骨料进行研磨，后加入石墨化废阴极粉，得到粉料；混合骨料和粉料，得到干料；向干料中加入沥青，并进行焙烧，得到预焙阳极；其中，石墨化废阴极粉和干料的质量之比为0.05～0.2；粉料包括石墨化废阴极粉和煅后石油焦粉；利用石墨化废阴极粉替代部分煅后石油焦，同时控制石墨化废阴极粉和粉料的质量之比，利用石墨化废阴极粉的高导电性降低预焙烧阳极的电阻率，提高炭素阳极的质量，同时实现铝电解废阴极的再利用，缓解炭素阳极的优质原料不足的问题。
Preparation method of prebaked anode
一种预焙阳极的制备方法
ZHANG JIGUANG (author) / HU CONGCONG (author) / LIU JIANJUN (author) / LUO YINGTAO (author) / SUN LIZHEN (author)
2023-07-25
Patent
Electronic Resource
Chinese
Homogeneous prebaked anode and preparation method thereof
| European Patent Office | 2024