高铁型煤矸石酸浸液制备聚合硫酸铝铁实验研究*

Abstract

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.

Key words: coal gangue, acid leaching solution, PAFS

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Inorganic Acid-Base-Salt Committee of CIESC

Experimental study on preparation of PAFS from acid leaching solution of high iron content coal gangue

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