| 高铁型煤矸石酸浸液制备聚合硫酸铝铁实验研究* |
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| 作者单位： | 六盘水师范学院化学与化工系，贵州省教育厅煤系固体废弃物资源化利用特色重点实验室，贵州六盘水 553004 |
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| 摘 要： | 以高铁型煤矸石酸浸液为原料，制备了高效无机高分子絮凝剂聚合硫酸铝铁（PAFS），并通过单因素实验研究了制备体系反应条件对聚合硫酸铝铁去浊率的影响。制备聚合硫酸铝铁优化工艺条件：铁离子与铝离子总浓度为
0.5 mol/L、铁离子与铝离子物质的量比为0.25、体系pH为0.8、80 ℃聚合8 h、室温熟化24 h。采用X射线衍射（XRD）及红外光谱（IR）对优化条件下制备的聚合硫酸铝铁进行了表征，表明产物为铁聚合较完全而铝部分聚合的聚合硫酸铝铁。
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| 关 键 词： | 煤矸石 酸浸液 聚合硫酸铝铁 |
Experimental study on preparation of PAFS from acid leaching solution of high iron content coal gangue |
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| Affiliation: | Characteristics Key Laboratory of Coal Series Solid Waste Recycling Utilization of Guizhou Provincial Education Department，
Department of Chemistry and Chemical Engineering，Liupanshui Normal University，Liupanshui 553004，China |
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| Abstract: | The high efficient inorganic polymer flocculants polymeric aluminum ferric sulfate（PAFS） was prepared from the acid leaching solution of high iron content coal gangue，and the effects of the reaction conditions on the turbidity removal ratios of PAFS were investigated through the single factor experiments.Results showed that the optimum synthesis conditions were：the total concentration of reaction system c（Fe3++Al3+）=0.5 mol/L，n（Fe3+）:n（Al3+）=0.25，pH=0.8，the polymerization temperature was 80 ℃，the polymerization time was 8 h，and curing time in room temperature atmosphere was 24 h.Finally，the product which prepared under the optimum conditions was characterized by X ray diffractometer（XRD） and infrared spectrometer（IR）.Results showed the product was PAFS，whereas iron was completely polymerized and aluminum was partially polymerized. |
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| Keywords: | coal gangue acid leaching solution PAFS |
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