| 改性拜耳法赤泥制备聚合氯化铝铁的研究 |
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| 引用本文： | 孟铁宏,朱云勤,胡兆平,江鸥.改性拜耳法赤泥制备聚合氯化铝铁的研究[J].中国给水排水,2009,25(15). |
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| 作者姓名： | 孟铁宏 朱云勤 胡兆平 江鸥 |
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| 作者单位： | 1. 贵州大学,化学与化工学院,贵州,贵阳,550025
2. 贵州平坝宏大铝化工有限公司,贵州,平坝,561108 |
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| 基金项目： | 贵州省重点技术创新项目 |
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| 摘 要： | 以改性拜耳法赤泥为原料,通过盐酸浸溶制备高效絮凝剂--聚合氯化铝铁(PAFC),并探讨了酸溶浸出过程的最佳工艺条件.结果表明,酸溶浸出过程的最佳工艺条件是:盐酸浓度为6 mol/L、盐酸与改性拜耳法赤泥的液固比为3:1、反应温度为95℃、反应时间为1.5h;自制PAFC的絮凝性能较单一聚铁、聚铝的好,且其絮体较大、致密、沉降速度快、除浊效果好.该工艺为拜耳法赤泥的综合利用开辟了一条新途径,具有良好的市场前景和社会效益.
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| 关 键 词： | 絮凝剂 改性拜耳法赤泥 聚合氯化铝铁(PAFC) |
Preparation of Polymeric Aluminum Ferric Chloride by Using Modified Bayer Red Mud |
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| MENG Tie-hong,ZHU Yun-qin,HU Zhao-ping,JIANG Ou.Preparation of Polymeric Aluminum Ferric Chloride by Using Modified Bayer Red Mud[J].China Water & Wastewater,2009,25(15). |
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| Authors: | MENG Tie-hong ZHU Yun-qin HU Zhao-ping JIANG Ou |
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| Affiliation: | MENG Tie-hong1,ZHU Yun-qin1,HU Zhao-ping2,JIANG Ou1(1.School of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China,2.Guizhou Pingba Hongda Aluminum Chemicals Co.Ltd.,Pingba 561108,China) |
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| Abstract: | Using the modified Bayer red mud as raw material, a high efficient flocculant, polymer-ic aluminum ferric chloride (PAFC) was prepared using acid leaching process, and the optimal condi-tions of the acid leaching process were explored. The results show that the optimal conditions are as fol-lows: the concentration of hydrochloric acid is 6 mol/L, the ratio of hydrochloric acid to modified Bayer red mud is 3 : 1, the reaction temperature is 95℃ and the reaction time is 1.5 h. The flocculation per-formance of PAFC is better than that of PFS and PAC, and it has larger and dense flocs, fast settling ve-locity, good turbidity removal effect. This process opens a new way for comprehensive utilization of Bayer red mud, and it has good market prospects and social benefits. |
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| Keywords: | flocculant modified Bayer red mud polymeric aluminum ferric chloride(PFAC) |
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