| 孙秀君.活化-酸浸法提取粉煤灰中氧化铝的溶出规律研究[J].唐山学院学报,2015,28(3):80-82 |
| 活化-酸浸法提取粉煤灰中氧化铝的溶出规律研究 |
| On the Law of the Extraction of Aluminum Oxide from Fly Ash Through Activation-Acid-Leaching |
| 投稿时间：2015-01-20 |
| DOI： |
| 中文关键词: 活化-酸浸法 粉煤灰 氧化铝 溶出率 中图 |
| 英文关键词: activation-acid-leaching fly ash aluminum oxide dissolution rate |
| 基金项目:唐山市科学技术研究与发展指导计划项目(14130288a)；唐山市精细化工重点实验室项目(140080109) |
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| 中文摘要: |
| 介绍了用活化-酸浸法提取粉煤灰中氧化铝的方法,考察了粉煤灰煅烧活化和硫酸浸出条件对粉煤灰中铝溶出率的影响。通过实验得出最佳工艺条件为:煅烧活化处理温度为750 ℃,碳酸钠和碳酸钾的混合物与粉煤灰的比例为2∶1,煅烧活化保温时间为45 min,硫酸浓度为0.6 mol/L,水浴溶出温度为80 ℃,氧化铝的最终溶出率为98.36%。 |
| 英文摘要: |
The author of this paper have studied the activation-acid-leaching method in extracting aluminum oxide from fly ash and examined the influence of fly ash calcined activation and sulfuric acid leaching condition on the aluminum leaching rate.
e obtained optimum conditions are as follows:the temperature of calcined activation is 750 ℃, the proportion of the mixture sodium carbonate and potassium carbonate to fly ash is 2∶1, the calcination holding time is 45 min, the concentration of sulfuric acid is 0.6 mol/L, the temperature of water bath is 80 ℃, and the ultimate alumina dissolution rate is 98.36%. |
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