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A platform for research: civil engineering, architecture and urbanism
Preparation method of anti-erosion micro-shrinkage cold ramming lining paste for aluminum electrolysis cell cathode
The invention relates to the technical field of nonferrous metal aluminum electrolysis, and provides a preparation method of anti-erosion micro-shrinkage cold ramming lining paste for an aluminum electrolysis cell cathode, and the preparation method comprises the following steps: deeply electrically calcining anthracite at the ultrahigh temperature of 2000-2500 DEG C to obtain aggregate; crushing, ball-milling and screening the aggregate to obtain aggregate particles with the particle size of less than 8mm; weighing according to the proportion; the aggregate and the additive are put into a kneading pot for dry mixing and preheating at the same time, and the binder is preheated by heat-conducting oil; the preheated binder is poured into a mixing and kneading pot, the wet mixing temperature is not lower than 50-60 DEG C, and the wet mixing time is 20-40 minutes; and detecting and packaging. The aluminum electrolysis cell lining has the advantages of being high in strength, good in heat stability, high in microporosity, resistant to oxidation and the like, high in compression strength and oxidation resistance and better in fire resistance, heat resistance and heat preservation performance, the cell leakage risk caused by furnace bottom cracks and layer-by-layer falling due to melt permeation erosion can be remarkably reduced, and the service life of the aluminum electrolysis cell lining can be greatly prolonged.
本申请涉及有色金属铝电解技术领域，提供了一种铝电解槽阴极用抗侵蚀微收缩冷捣内衬糊的制备方法，包括以下步骤：无烟煤在超高温2000‑2500℃下深度电煅得到骨料；骨料经破碎、球磨、筛分后得到粒径小于8mm的骨料颗粒；按配比进行称重；骨料与添加剂放入混捏锅干混时同时预热，粘结剂经导热油预热；将预热后的粘结剂倒入混捏锅中，湿混温度不得低于50‑60℃，湿混时间20‑40分钟；检测与包装。本发明具有强度高、热稳定性好、微孔率高、耐氧化等特性，以及较高的耐压强度、耐氧化性和更好的耐火阻热保温性，可显著降低炉底裂缝和熔液渗透侵蚀层层脱落导致的漏槽风险，能大幅提高铝电解槽内衬的使用寿命。
Preparation method of anti-erosion micro-shrinkage cold ramming lining paste for aluminum electrolysis cell cathode
The invention relates to the technical field of nonferrous metal aluminum electrolysis, and provides a preparation method of anti-erosion micro-shrinkage cold ramming lining paste for an aluminum electrolysis cell cathode, and the preparation method comprises the following steps: deeply electrically calcining anthracite at the ultrahigh temperature of 2000-2500 DEG C to obtain aggregate; crushing, ball-milling and screening the aggregate to obtain aggregate particles with the particle size of less than 8mm; weighing according to the proportion; the aggregate and the additive are put into a kneading pot for dry mixing and preheating at the same time, and the binder is preheated by heat-conducting oil; the preheated binder is poured into a mixing and kneading pot, the wet mixing temperature is not lower than 50-60 DEG C, and the wet mixing time is 20-40 minutes; and detecting and packaging. The aluminum electrolysis cell lining has the advantages of being high in strength, good in heat stability, high in microporosity, resistant to oxidation and the like, high in compression strength and oxidation resistance and better in fire resistance, heat resistance and heat preservation performance, the cell leakage risk caused by furnace bottom cracks and layer-by-layer falling due to melt permeation erosion can be remarkably reduced, and the service life of the aluminum electrolysis cell lining can be greatly prolonged.
本申请涉及有色金属铝电解技术领域，提供了一种铝电解槽阴极用抗侵蚀微收缩冷捣内衬糊的制备方法，包括以下步骤：无烟煤在超高温2000‑2500℃下深度电煅得到骨料；骨料经破碎、球磨、筛分后得到粒径小于8mm的骨料颗粒；按配比进行称重；骨料与添加剂放入混捏锅干混时同时预热，粘结剂经导热油预热；将预热后的粘结剂倒入混捏锅中，湿混温度不得低于50‑60℃，湿混时间20‑40分钟；检测与包装。本发明具有强度高、热稳定性好、微孔率高、耐氧化等特性，以及较高的耐压强度、耐氧化性和更好的耐火阻热保温性，可显著降低炉底裂缝和熔液渗透侵蚀层层脱落导致的漏槽风险，能大幅提高铝电解槽内衬的使用寿命。
Preparation method of anti-erosion micro-shrinkage cold ramming lining paste for aluminum electrolysis cell cathode
一种铝电解槽阴极用抗侵蚀微收缩冷捣内衬糊的制备方法
ZHANG YONGJUN (author) / WANG HUANXUE (author) / FU XIAOLIANG (author) / CHEN XIBIAO (author)
2023-09-15
Patent
Electronic Resource
Chinese
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