铝土矿生料浆烘干与烧结特性的试验研究  

Test study on the Raw Slurry Baking and Sintering Feature of Aluminate Sodium Sintered Material

作　　者：黄春成 

机构地区：[1]中国铝业中州分公司,河南焦作454174

出　　处：《矿产保护与利用》2011年第4期31-35,共5页Conservation and Utilization of Mineral Resources

摘　　要：在试验室条件下,参照国外研究成果,结合我国碱石灰烧结法氧化铝生产实际,从生料浆黏度变化规律、生料浆烘干过程及生料浆烧结特性等方面进行了试验。研究试验结果表明:真钙比的变化对同一水分下生料浆黏度的影响不明显,当生料将水分<38%时,生料浆水分和生料浆温度升高对生料浆黏度值影响较大;气态悬浮干燥器中料浆烘干温度应不低于600℃;熟料的烧成温度、烧结保温时间、料团粒径的大小及结构密实程度是保证熟料烧成质量的关键。Combining with alumina ring to foreign study achievements, production practice by the alkali - lime sintering process, referthe author studied the law of the viscosity, baking process and sintering feature of the raw slurry in the laboratory conditions. The test resuhs showed that the true calcium ratio change had no effect on the viscosity of the raw slurry at the same moisture, but when the raw slurry moisture was less than 38%, its moisture and temperature increasing had a large effect on its viscosity. The slurry baking temperature in the gas suspension baking oven should be higher than 600℃. Sintering temperature, the time of sintering retaining temperature, the cluster particle size and the structure consistency of the sintered material were the key to ensure a high quality of the sintered material.

关 键 词：生料浆 重量损失 烘干特性 烘干速率 烧结特性 

分 类 号：TF802.64[冶金工程—有色金属冶金]