合成磷酸钙磷酸镁复合物工艺研究
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摘要
探讨了利用白云石和工业磷酸合成磷酸钙磷酸镁复合物的理论依据,分析了影响合成的工艺因素,讨论了钙镁合量与磷的摩尔比(Ca+Mg)/P、磷酸加入速率、合成温度和保温时间对合成的影响。实验结果表明,合成磷酸钙磷酸镁复合物的最佳工艺参数为:钙镁合量与磷的摩尔比(Ca+Mg)/P1.60,磷酸加入速率2mL/min,合成温度1 050℃,保温时间40min。
This paper is intended to study the theoretical basis of the use of dolomite and industrial phosphoric acid to synthesize calcium phosphate and magnesium phosphate,analyze the factors influencing the synthesis process,and discuss the influence of the molar ratio of calcium+ magnesium and phosphorus(Ca+Mg)/P,phosphoric acid addition rate,synthesis temperature and holding time on the synthesis.The experiment results show the optimum parameters of the synthetic process of calcium phosphate and magnesium phosphate:the molar ratio of calcium+ magnesium and phosphorus(Ca+Mg)/P is 1.60,the phosphoric acid addition rate is 2mL/min,the synthesis temperature is 1050 1 050 ℃,and the holding time is 40 min.
This paper is intended to study the theoretical basis of the use of dolomite and industrial phosphoric acid to synthesize calcium phosphate and magnesium phosphate,analyze the factors influencing the synthesis process,and discuss the influence of the molar ratio of calcium+ magnesium and phosphorus(Ca+Mg)/P,phosphoric acid addition rate,synthesis temperature and holding time on the synthesis.The experiment results show the optimum parameters of the synthetic process of calcium phosphate and magnesium phosphate:the molar ratio of calcium+ magnesium and phosphorus(Ca+Mg)/P is 1.60,the phosphoric acid addition rate is 2mL/min,the synthesis temperature is 1050 1 050 ℃,and the holding time is 40 min.
引文
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[2]曾波,赵海燕,任思宇.高温固相法合成无水磷酸镁实验研究[J].工业技术,2010,42(3):37-39.
[3]Ando J.Phase diagrams of Ca3(PO4)2-Mg3(PO4)2and Ca3(PO4)2-CaNaPO4systems[J].Bulletin of The Chemical Society of Japan,1958,31(2):201-205.
[4]Terpstra R A,Driessens F C M,Verbeeck R M H.The CaO-MgO-P2O5system at 1000°C for P2O533.3mole%[J].Zeitschrift für Anorganische und Allgemeine Chemie,1984,515:213-224.
[5]王秀文.磷酸三钙合成工艺过程的研究[J].中国陶瓷,2006,42(4):20-25.