Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of novel side wall material of aluminum electrolysis cell
The invention discloses a preparation method of a novel side wall material of an aluminum electrolysis cell, and belongs to the technical field of aluminum electrolysis cells. The method comprises the following steps: (1) crushing the waste silicon carbide combined silicon nitride refractory block into spherical particles or needle-shaped particles with the particle size of less than 5mm; (2) adding a sodium removal agent into the crushed material, quickly stirring for 0.5-2 hours to form slurry, pumping the slurry into a distillation kettle, and controlling the distillation temperature to be 300-700 DEG C so as to remove residual metal sodium; carrying out filter pressing treatment on the material in the distillation kettle, and drying to obtain a dry material; and (3) mixing 35-40 parts of the dry material, 7-8 parts of an adhesive and 1-3 parts of carbon powder, heating at 150-260 DEG C, and roasting in a forming die cavity to obtain the side wall material. The side wall material can meet and adapt to the side heat balance requirement of the low-temperature and low-consumption electrolysis technology, meanwhile, the problems that waste side carbon block resources are idle, harm is caused to the environment and the like are solved, and resource recycling of the waste side carbon blocks is achieved.
本发明公开了一种铝电解槽新型侧壁材料的制备方法，属于铝电解槽技术领域。该方法包括：(1)将废旧碳化硅结合氮化硅耐火块破碎为粒径5mm以下的球形颗粒物或针状颗粒物；(2)破碎后物料中加入除钠剂，快速搅拌0.5～2h形成浆液，泵送至蒸馏釜中，控制蒸馏温度为300～700℃，以去除金属钠的残留；蒸馏釜内物料经压滤处理后烘干，得到干料；(3)将干料35～40份、黏结剂7～8份和碳粉1～3份混合并在150～260℃加热，然后放入成型模腔内焙烧后，即得到所述侧壁材料。该侧壁材料能满足和适应低温低耗电解技术侧部热平衡需求，同时解决废侧部炭块资源闲置及对环境造成的危害等问题，实现废旧侧部炭块资源化循环利用。
Preparation method of novel side wall material of aluminum electrolysis cell
The invention discloses a preparation method of a novel side wall material of an aluminum electrolysis cell, and belongs to the technical field of aluminum electrolysis cells. The method comprises the following steps: (1) crushing the waste silicon carbide combined silicon nitride refractory block into spherical particles or needle-shaped particles with the particle size of less than 5mm; (2) adding a sodium removal agent into the crushed material, quickly stirring for 0.5-2 hours to form slurry, pumping the slurry into a distillation kettle, and controlling the distillation temperature to be 300-700 DEG C so as to remove residual metal sodium; carrying out filter pressing treatment on the material in the distillation kettle, and drying to obtain a dry material; and (3) mixing 35-40 parts of the dry material, 7-8 parts of an adhesive and 1-3 parts of carbon powder, heating at 150-260 DEG C, and roasting in a forming die cavity to obtain the side wall material. The side wall material can meet and adapt to the side heat balance requirement of the low-temperature and low-consumption electrolysis technology, meanwhile, the problems that waste side carbon block resources are idle, harm is caused to the environment and the like are solved, and resource recycling of the waste side carbon blocks is achieved.
本发明公开了一种铝电解槽新型侧壁材料的制备方法，属于铝电解槽技术领域。该方法包括：(1)将废旧碳化硅结合氮化硅耐火块破碎为粒径5mm以下的球形颗粒物或针状颗粒物；(2)破碎后物料中加入除钠剂，快速搅拌0.5～2h形成浆液，泵送至蒸馏釜中，控制蒸馏温度为300～700℃，以去除金属钠的残留；蒸馏釜内物料经压滤处理后烘干，得到干料；(3)将干料35～40份、黏结剂7～8份和碳粉1～3份混合并在150～260℃加热，然后放入成型模腔内焙烧后，即得到所述侧壁材料。该侧壁材料能满足和适应低温低耗电解技术侧部热平衡需求，同时解决废侧部炭块资源闲置及对环境造成的危害等问题，实现废旧侧部炭块资源化循环利用。
Preparation method of novel side wall material of aluminum electrolysis cell
一种铝电解槽新型侧壁材料的制备方法
CHANG ZHENLI (Autor:in)
01.03.2024
Patent
Elektronische Ressource
Chinesisch
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