有机酸对低品位磷矿粉的活化及释磷动力学研究
发布时间：2018-11-27 20:17
【摘要】：研究了相同浓度下多种有机酸对低品位磷矿粉的活化效果,结果表明,在40mmol/L浓度下,草酸的活化效果最好,溶液中的可溶性磷质量浓度达到了187.5mg/L。进一步研究了草酸活化低品位磷矿粉的工艺参数优化,结果表明,在浓度为20mmol/L,温度为20℃,固液比为3∶500时,反应48h可溶性磷质量浓度最佳。选取一级动力学方程、Elovich方程和抛物线方程进行拟合,结果表明草酸活化低品位磷矿粉的过程较符合一级动力学方程。
[Abstract]:The activation effect of various organic acids on low-grade phosphate rock powder at the same concentration was studied. The results showed that oxalic acid had the best activation effect at the concentration of 40mmol/L, and the mass concentration of soluble phosphorus in the solution reached 187.5 mg / L. The technological parameters of oxalic acid activated low-grade phosphate rock powder were further studied. The results showed that the optimum concentration of soluble phosphorus was obtained at 20 mmol / L, 20 鈩，
本文编号：2361920
[Abstract]:The activation effect of various organic acids on low-grade phosphate rock powder at the same concentration was studied. The results showed that oxalic acid had the best activation effect at the concentration of 40mmol/L, and the mass concentration of soluble phosphorus in the solution reached 187.5 mg / L. The technological parameters of oxalic acid activated low-grade phosphate rock powder were further studied. The results showed that the optimum concentration of soluble phosphorus was obtained at 20 mmol / L, 20 鈩，
本文编号：2361920
本文链接：https://www.wllwen.com/kejilunwen/kuangye/2361920.html
