【摘要】：以硝酸浸取廢無汞堿性電池極性材料,再加入硝酸鐵及蔗糖生成前驅(qū)體,最后通過焙燒制得錳鋅鐵氧體磁性納米顆粒。優(yōu)化了酸浸和焙燒條件,采用FTIR和DTA-TG技術(shù)研究了前驅(qū)體的形成和熱解過程,采用XRD、FTIR、TEM技術(shù)和振動(dòng)樣品磁強(qiáng)計(jì)對錳鋅鐵氧體進(jìn)行了表征。結(jié)果表明:廢無汞堿性電池極性材料酸浸的最佳條件為H_2O_2加入量3%(w)、液固比10 mL/g、稀硝酸濃度4 mol/L、浸取溫度40℃,該條件下浸取10 min錳和鋅的浸出率均可達(dá)100%;所得前驅(qū)體為葡萄糖酸鹽,其最佳焙燒條件為焙燒溫度450℃、焙燒時(shí)間2 h;最佳條件下所得錳鋅鐵氧體為尖晶石型Mn_(0.5)Zn_(0.5)Fe_2O_4,其顆粒為球形、大小均勻,且磁性能優(yōu)良。
[Abstract]:The waste mercury-free alkaline battery polar material was extracted by nitric acid, then ferric nitrate and sucrose were added to form precursor. Finally, the magnetic nanocrystalline manganese zinc ferrite was prepared by calcination. The conditions of acid leaching and calcination were optimized. The formation and pyrolysis of precursors were studied by FTIR and DTA-TG techniques. Mn-Zn ferrite was characterized by XRD,FTIR,TEM technique and vibrating sample magnetometer. The results show that the optimum conditions for acid leaching of waste mercury-free alkaline battery materials are as follows: the amount of H_2O_2 3% (w), liquid-solid ratio 10 mL/g, the concentration of dilute nitric acid 4 mol/L, and the leaching temperature 40 鈩，

本文編號：2281537