CAJ | 학술논문

以pH值原位测定法为基础，结合沉淀体积变化、沉淀粒度及外观形貌分析结果，对NaHCO3沉淀镧的性能及碳酸镧的结晶过程进行了研究。结果表明：碳酸镧结晶活性区域位于低配比区0.541～2.828之间，而在高配比区其结晶是惰性的。同时还考察了搅拌对结晶过程的影响，讨论了NaHCO3沉淀镧时的沉淀反应和结晶化机理。并给出了相关的化学反应方程式。
이pH치원위측정법위기출，결합침정체적변화、침정립도급외관형모분석결과，대NaHCO3침정란적성능급탄산란적결정과정진행료연구。결과표명：탄산란결정활성구역위우저배비구0.541～2.828지간，이재고배비구기결정시타성적。동시환고찰료교반대결정과정적영향，토론료NaHCO3침정란시적침정반응화결정화궤리。병급출료상관적화학반응방정식。
Based on pH situ-determination data,together with the results of variation in precipitation volume and precipitation partical size,the properties of lanthanum carbonate precipitated with sodium bicarbonate were investigated.The results show that crystalliazation active zone of lanthanum carbonate is in low molar ratio zone,where the moalr ratio is between 0.541～2.828.However,the crystallization of lanthanum carbonate in high molar ratio zone is inactive.At the same tine,the influence of stirring on the crystallization of lanthanum carbonate was examined ,the crystallization mechanism was discussed and the corresponding reaction equations were proposed.