侧流法脱除草酸钠工艺在氧化铝生产中的工业实践  

Industrial Practice of Removing Sodium Oxalate by Side Flow Method in Alumina Production

作　　者：尹海军 YIN Haijun(Guangxi Huasheng New Materials Co.,Ltd.,Fangchenggang 538003,China)

机构地区：[1]广西华昇新材料有限公司,广西防城港538003

出　　处：《金属材料与冶金工程》2023年第4期49-53,共5页Metal Materials and Metallurgy Engineering

摘　　要：广西华昇新材料有限公司采用单独的几内亚铝土矿生产氧化铝,该矿石有机物含量较高,投产后有机物很快在流程中积累,并最终以草酸钠的形态析出,导致过滤设备产能不足,氧化铝产品质量下降等问题,影响生产正常运行。为解决此问题,通过摸索侧流法脱除草酸钠的母液浓度、温度、种子量、析出时间等操作参数,并对草酸钠颗粒微观进行研究,应用于氧化铝生产实践后,成功解决了由于流程草酸钠升高导致生产难以维持的一系列问题。Guangxi Huasheng New Materials Co.,Ltd.produces alumina from a single guinea bauxite ore.The content of organic matter in the ore is high,and the organic matter accumulates quickly in the process of production,and eventually precipitates out in the form of sodium oxalate,lead to insufficient capacity of filtration equipment,alumina product quality decline and other problems,affecting the normal operation of production.In order to solve this problem,the mother liquor concentration,temperature,seed weight and precipitation time of sodium oxalate were studied by side-flow method,after application in alumina production practice,a series of problems caused by the increase of sodium oxalate in the production process are solved successfully.

关 键 词：拜耳法 草酸钠 侧流法 

分 类 号：TF821[冶金工程—有色金属冶金]