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振动强磨及酸溶处理对铁酸锌粉体性状的影响
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摘要
通过机械振动强磨及酸溶处理对焙烧法所制纯铁酸锌进行细化,采用XRD分析不同处理条件下铁酸锌的晶粒尺寸、晶胞参数及晶格应变大小,采用SEM分析颗粒微观形貌,采用孔径与比表面分析仪分析比表面积和孔径尺寸。结果表明:当实验条件分别为振动磨12 min、40℃/50 g·L~(-1)酸溶后磨12 min及90℃/250 g·L~(-1)酸溶后磨12 min时,晶粒尺寸及微观应变均呈先增大再减小再增大的变化趋势。90℃/250 g·L~(-1)条件下酸溶处理后再机械强磨比直接机械处理的比表面增大而单点平均孔半径会减小,孔容则基本不变。40℃/50 g·L~(-1)酸浸后磨12 min制得的铁酸锌粉体粒度较小,基本处于200~300 m,均一性较好。
Pure zinc ferrite particles were refined through strong mechanical vibration grinding and acid soluble treatment.The grain size,the crystal cell parameters and the lattice strain of zinc ferrite were analyzed by the method of XRD,SEM analysis was used on the study of particle microstructure,specific surface area and aperture size were analyzed with pore size and specific surface analyzer under different conditions.The results show that grain size and micro strain were increased firstly,then decrease,and increase lastly when the condition is vibration grinding for 12 min,acid leaching under the condition of 40 ℃/50 g·L~(-1)and 90 ℃/250 g ·L~(-1) then vibration grinding for 12 min,respectively.Compared with direct mechanical processing,the specific surface increased,single point average pore radius decreased and pore volume is basically unchanged under mechanical grinding after acid soluble at 90℃/250 g·L~(-1).Particle size of zinc ferrite powder vibration grinding for 12 min after acid leaching at 40 ℃/50 g ·L~(-1) is about200-300 nm and has good uniformity.
引文
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