铝土矿的烧结串联法研究  

Research on the Sintering-Sintering Series Process of the Bauxite

作　　者：韩颜卿 邢东升 胡四春[3] 

机构地区：[1]中国铝业河南分公司,郑州450041 [2]中国铝业矿业分公司,郑州450041 [3]中国地质科学院郑州矿产综合利用研究所,郑州450006

出　　处：《矿产保护与利用》2006年第5期39-41,共3页Conservation and Utilization of Mineral Resources

摘　　要：研究了处理铝硅比为4—6的铝土矿烧结串联法工艺。试验表明，串联法中Ⅰ段烧结最佳条件：碱比为1.2、烧结温度1100℃、烧结时间40min；Ⅱ段烧结最佳条件：钙比2．25、烧结温度1200℃、烧结时间20min；烧结串联工艺氧化铝溶出率ηA标可达98．05％，总的化学碱耗为每吨氧化铝耗碱11．59kg。This paper studies on the sintering - sintering series process of the bauxite （ A/S = 4 - 6）. It shows that the optimum condition for the sintering - sintering series process＇s first stage sinte- ring is when alkali ratio is 1.2, sintering temperature is 1 100℃ and sintering time is 40 minutes. While the optimum condition for the sintering - sintering series process h second stage sintering is when calcium ratio is 2.25, sintering temperature is 1 200℃ and sintering time is 20 minutes. In this process, the lixiviating rate of the bauxite totals is up to 98.05 %, total consumption of alkali in chemical reaction is 11.59 kg per ton alumina.

关 键 词：铝土矿 烧结串联法 烧结温度 烧结时间 氧化铝溶出率 

分 类 号：TF821[冶金工程—有色金属冶金]