Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Alpha-aluminum oxide for ceramic balls and preparation method of alpha-aluminum oxide
The invention particularly relates to alpha-aluminum oxide for ceramic balls and a preparation method thereof, and belongs to the technical field of aluminum oxide preparation, the method comprises the following steps: industrial aluminum hydroxide is subjected to water washing pretreatment to obtain wet industrial aluminum hydroxide, the moisture of the wet industrial aluminum hydroxide is not more than 10% by mass, and the sodium oxide content of the wet industrial aluminum hydroxide is 0.25%-0.3%; mixing the wet industrial aluminum hydroxide with the sodium removal agent and the mineralizing agent to obtain a mixture; preheating the mixture to obtain a preheated mixture; calcining the preheated mixture, and then screening to obtain alpha-aluminum oxide; a part of sodium oxide impurities in industrial aluminum hydroxide are removed through water washing pretreatment, a sodium removing agent is added, the sodium oxide impurities are further removed through efficient rotary kiln calcination, a mineralizing agent is added to control the crystal form and the crystal appearance, alpha-aluminum oxide with the small sodium oxide content is efficiently produced, and the method has the advantages of being simple in process, environmentally friendly, high in production efficiency and the like; the product is good in grindability and uniform in crystal grain.
本发明特别涉及一种陶瓷球用α‑氧化铝及其制备方法，属于氧化铝制备技术领域，方法包括：将工业氢氧化铝进行水洗预处理，获得湿工业氢氧化铝，以质量计，湿工业氢氧化铝的水分不大于10％，湿工业氢氧化铝的氧化钠含量为0.25％‑0.3％；将湿工业氢氧化铝和脱钠剂和矿化剂混合，获得混合料；将混合料进行预热处理，获得预热混合料；将预热混合料进行煅烧，后进行筛分，获得α‑氧化铝；通过水洗预处理脱除工业氢氧化铝中一部分氧化钠杂质，添加脱钠剂利用高效的回转窑煅烧进一步脱除氧化钠杂质，添加矿化剂控制晶型晶貌，高效的生产氧化钠含量小的α‑氧化铝，具有工艺简单、环境友好和生产效率高等优点，产品易磨性良好，晶粒均匀。
Alpha-aluminum oxide for ceramic balls and preparation method of alpha-aluminum oxide
The invention particularly relates to alpha-aluminum oxide for ceramic balls and a preparation method thereof, and belongs to the technical field of aluminum oxide preparation, the method comprises the following steps: industrial aluminum hydroxide is subjected to water washing pretreatment to obtain wet industrial aluminum hydroxide, the moisture of the wet industrial aluminum hydroxide is not more than 10% by mass, and the sodium oxide content of the wet industrial aluminum hydroxide is 0.25%-0.3%; mixing the wet industrial aluminum hydroxide with the sodium removal agent and the mineralizing agent to obtain a mixture; preheating the mixture to obtain a preheated mixture; calcining the preheated mixture, and then screening to obtain alpha-aluminum oxide; a part of sodium oxide impurities in industrial aluminum hydroxide are removed through water washing pretreatment, a sodium removing agent is added, the sodium oxide impurities are further removed through efficient rotary kiln calcination, a mineralizing agent is added to control the crystal form and the crystal appearance, alpha-aluminum oxide with the small sodium oxide content is efficiently produced, and the method has the advantages of being simple in process, environmentally friendly, high in production efficiency and the like; the product is good in grindability and uniform in crystal grain.
本发明特别涉及一种陶瓷球用α‑氧化铝及其制备方法，属于氧化铝制备技术领域，方法包括：将工业氢氧化铝进行水洗预处理，获得湿工业氢氧化铝，以质量计，湿工业氢氧化铝的水分不大于10％，湿工业氢氧化铝的氧化钠含量为0.25％‑0.3％；将湿工业氢氧化铝和脱钠剂和矿化剂混合，获得混合料；将混合料进行预热处理，获得预热混合料；将预热混合料进行煅烧，后进行筛分，获得α‑氧化铝；通过水洗预处理脱除工业氢氧化铝中一部分氧化钠杂质，添加脱钠剂利用高效的回转窑煅烧进一步脱除氧化钠杂质，添加矿化剂控制晶型晶貌，高效的生产氧化钠含量小的α‑氧化铝，具有工艺简单、环境友好和生产效率高等优点，产品易磨性良好，晶粒均匀。
Alpha-aluminum oxide for ceramic balls and preparation method of alpha-aluminum oxide
一种陶瓷球用α-氧化铝及其制备方法
ZHAO SHANLEI (Autor:in) / LI ZHIYONG (Autor:in) / WANG SHAOWU (Autor:in) / YU JIANG (Autor:in) / SANG JINGFENG (Autor:in) / QI BO (Autor:in) / CHANG SHUAI (Autor:in) / WANG WEI (Autor:in) / YAO YI (Autor:in)
29.04.2022
Patent
Elektronische Ressource
Chinesisch
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