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研究了采用H2O2湿式氧化法脱除某铝厂分解母液中的有机物,考察了母液苛性碱浓度、氧化时间、双氧水用量、温度对脱除有机物的影响。结果表明:H2O2湿式氧化法可有效脱除铝酸钠溶液中的大部分有机物;试验获得的适宜工艺条件为苛性碱质量浓度280g/L,氧化时间120min,氧化温度80℃,双氧水用量80mL。适宜条件下,草酸钠脱除率为65.31%,总有机物脱除率为60.86%。H2O2湿式氧化法脱除铝酸钠溶液中有机物工艺简单,系统中不引入杂质。
Abstract：By wet hydrogen peroxide oxidation,the effects of alkali concentration,oxidation time,the amount of hydrogen peroxide and oxidation temperature on the removal of organics in Bayer liquor were investigated.The experiment results show that wet hydrogen peroxide oxidation method can effectively eliminate most of the organics in the sodium aluminate solution.The better oxidation conditions is alkali concentration of 280g/L,oxidation temperature of 80 ℃,the amount of hydrogen peroxide of 80 mL,oxidation time of 120 min for sodium aluminate solution of 80 mL.The removal rate of sodium oxalate is 65.31% and the removal rate of total organic carbon is 60.86% at the best conditions.The process is simple,no impurity is introduced in the system.
[1]杨纪倩.我国铝土矿与氧化铝生产的现状与探讨[J].世界有色金属,2006(11):17-19.
[2]杨重愚.氧化铝生产工艺学[M].北京:冶金工业出版社:1982.
[3]Power G P.The Impact and Control of Organic Compounds in The Extraction of Alumina From Bauxite[C]//Fifth Aus IMM Extractive Metallurgy Conference,Australian Institute of Mining and Metallurgy,Perth,1991:337-345.
[4]Smeulders D E,Wilson M A,Armstrong L.Insoluble Organic Compounds in The Bayer Process[J].Ind Eng Chem.Res,2001,40(10):2243-2251.
[5]鲁少冲,李军旗,赵飞,等.铝酸钠溶液中有机物的危害与排除[C]//2008年全国冶金物理化学学术会议专辑:下册,2008:496-499.
[6]Brown N.Kinetics of Copper-catalysed Oxidation of Bayer Liquor Organics[J].The Minerals,Metals and Materials Society,1989,49:121-130.
[7]Zoldi J,Solymar K,Feher I.Organic Removal and Its Effect on Precipitation and Alumina Quality[J].Magy Alum,1988,25(11):356-368.
[8]陈文汩,陈学刚.湿式氧化法在拜耳法中的应用及待解决问题[J].轻金属,2008(6):11-14.
[9]张浩.湿式氧化法去除铝酸钠溶液中有机物的研究[D].长沙:中南大学,2011.
[10]Loh J,Brodie G,Power G,et al.Mechanisms of Degradation of Hydrate Yield Inhibitors by Wet Oxidation[C]//8th International Alumina Quality Workshop,AQW Inc,Australian,2008:199-205.
[11]Brown N,Cole T J.The Behavior of Sodium Oxalate in A Bayer Alumina Plant[J].1980,15(1/2):105-117.
[12]The PJ,Williams F S,Guthrie J D.Mass Transfer Studies on Wet Oxidation of Bayer liquor[J].Light Metals,1985,60(1/2):103-116.
[13]Eyer S,Bhargava S,Tardio J,et al.Selective Wet Oxidation and Catalytic Wet Oxidation of Disodium Malonate in the Alumina Industrial Liquor[J].Industrial and Engineering Chemistry Research,2002,41(5):1166-1170.
[14]Dong J,Power G,Loh J,et al.Fundamentals of Wet Oxidation of Bayer-Process Liquor:Reactivity of Malonates[J].Industrial and Engineering Chemistry Researeh,2010,49(11):5347-5352.
[15]张爱芬.高锰酸钾容量法测定铝酸钠溶液中有机物的方法探讨[J].分析实验室,2006(23):354-355.
[16]米秋秋,李军旗,金会心,等.结晶法脱除某铝酸钠溶液中的有机物[J].湿法冶金,2013,32(4):266-269.
基本信息:
DOI：10.13355/j.cnki.sfyj.2014.06.18
中图分类号:TF803.25
引用信息:
[1]杜振华,李军旗,金会心等.H_2O_2湿式氧化法脱除铝酸钠溶液中的有机物[J].湿法冶金,2014,33(06):483-486.DOI:10.13355/j.cnki.sfyj.2014.06.18.
基金信息: