氧化铝生产过程中草酸盐排除工艺优化与应用  

Optimization and Application of Oxalate Exclusion Process during Alumina Production Process

作　　者：何清 李小波 范超 王治国 武正君 赵粉 HE Qing;LI Xiaobo;FAN Chao;WANG Zhiguo;WU Zhengjun;ZHAO Fen(Yunnan Wenshan Aluminum Co.,Ltd.,Wenshan,Yunnan 663000,China)

机构地区：[1]云南文山铝业有限公司,云南文山663000

出　　处：《云南冶金》2025年第1期75-78,共4页Yunnan Metallurgy

基　　金：云南省重大科技专项(202402AB080004)。

摘　　要：针对高碳铝土矿进入系统生成草酸盐并在母液中富集,严重影响产品质量和产量的问题,对母液液固分离、换热降温、添加活性溶出渣等进行分析,优化了草酸盐排除工艺。结果表明:除杂母液量达到330 m^(3)/h,末槽固含稳定控制在30 g/L左右,草酸盐平均析出率为32.11%。Oxalate generated in a high-carbon bauxite feeding system and concentrated in the mother liquor can negatively impact product quality and yield.To optimize the oxalate exclusion process,several measures are implemented,including liquid-solid separation of the mother liquor,heat exchange and cooling,and the addition of active dissolution slag.Results show that the average precipitation rate of oxalate is 32.11%when the purification mother liquor volume is 330 m^(3)/h,and the solid content for final cell stability is controlled at around 30 g/L.

关 键 词：有机碳 草酸盐 晶种分解 过滤 换热器 活性溶出渣 

分 类 号：TF821[冶金工程—有色金属冶金]