有机物两段苛化工艺中氧化铝的回收研究
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摘要
介绍了有机物两段苛化法的原理。采用碳酸钠浸出工艺对有机物苛化沉铝渣中的氧化铝进行回收,探讨了碳酸钠浓度、浸出温度、浸出时间、液固比等对氧化铝回收率的影响,最佳工艺条件为:碳酸钠浓度90g/L、反应温度100℃、反应时间80min、液固比10,在此条件下氧化铝的回收率可达90%以上。
Principle of two stage organic caustic method was introduced.Alumina was recovered from twostage organic caustic slag by leaching with sodium carbonate.Effects of sodium carbonate concentration,leaching temperature,leaching time,and ratio of liquid to solid(L/S)on alumina recovery rate were investigated.The results show that alumina recovery rate is 90% above under the optimum conditions including concentration of sodium carbonate of 90 g/L,reaction temperature of 100℃,reaction time of 80 min,and L/S of 10.
Principle of two stage organic caustic method was introduced.Alumina was recovered from twostage organic caustic slag by leaching with sodium carbonate.Effects of sodium carbonate concentration,leaching temperature,leaching time,and ratio of liquid to solid(L/S)on alumina recovery rate were investigated.The results show that alumina recovery rate is 90% above under the optimum conditions including concentration of sodium carbonate of 90 g/L,reaction temperature of 100℃,reaction time of 80 min,and L/S of 10.
引文
[1]高兴同,郭沈,厉衡隆.中国进口铝土矿综论[J].轻金属,2016(7):4-11.
[2]范尚,陈文汨,梁高杰.铝酸钠溶液种分过程中草酸钠结晶析出的行为[J].工程科学学报,2018,40(1):51-58.
[3]杨保平,赵泳奇,王虎.从拜耳工艺苛化渣中提取氧化铝试验研究[J].湿法冶金,2018,37(3):207-210.
[4]赵瑜,刘桂华,皮溅清.铝酸钠溶液中草酸钠的石灰苛化[J].世界有色金属,2013(11):76-77.
[5]仇振琢.苛化溶出铝酸钙[J].轻金属,1999(4):18-21.
[6]李小斌,郑洁,齐天贵,等.CaCO3在铝酸钠溶液中的反苛化作用[J].中南大学学报,2013,44(7):2663-2668.
[2]范尚,陈文汨,梁高杰.铝酸钠溶液种分过程中草酸钠结晶析出的行为[J].工程科学学报,2018,40(1):51-58.
[3]杨保平,赵泳奇,王虎.从拜耳工艺苛化渣中提取氧化铝试验研究[J].湿法冶金,2018,37(3):207-210.
[4]赵瑜,刘桂华,皮溅清.铝酸钠溶液中草酸钠的石灰苛化[J].世界有色金属,2013(11):76-77.
[5]仇振琢.苛化溶出铝酸钙[J].轻金属,1999(4):18-21.
[6]李小斌,郑洁,齐天贵,等.CaCO3在铝酸钠溶液中的反苛化作用[J].中南大学学报,2013,44(7):2663-2668.