CAJ | 학술논문

　　采用等温法测定了25°C时异极矿在硫酸铵溶液中的溶解度，并利用X射线衍射、傅里叶转换红外光谱及扫描电子显微镜分析了溶解湿渣的性质。结果表明：异极矿中的锌、硅同时溶解在硫酸铵溶液中且随着硫酸铵浓度的增加，溶液中锌的浓度从4.5381 mmol/kg迅速增加到11.5083 mmol/kg，硅的浓度从2.5509 mmol/kg缓慢增加到7.2891 mmol/kg。结合X射线衍射、傅里叶转换红外光谱以及扫描电子显微镜的结果，证实了在溶解过程中无相变发生，湿渣的组成仍为异极矿。
　　채용등온법측정료25°C시이겁광재류산안용액중적용해도，병이용X사선연사、부리협전환홍외광보급소묘전자현미경분석료용해습사적성질。결과표명：이겁광중적자、규동시용해재류산안용액중차수착류산안농도적증가，용액중자적농도종4.5381 mmol/kg신속증가도11.5083 mmol/kg，규적농도종2.5509 mmol/kg완만증가도7.2891 mmol/kg。결합X사선연사、부리협전환홍외광보이급소묘전자현미경적결과，증실료재용해과정중무상변발생，습사적조성잉위이겁광。
The solubility of natural hemimorphite in ammonium sulfate solution was measured by isothermal solution method at 25 °C and the dissolved residue of hemimorphite was investigated by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) methods. The results show that zinc and silica in hemimorphite simultaneously dissolve in ammonium sulfate solution. The solubility of zinc in solution increases rapidly from 4.5381 mmol/kg in 0.5469 mol/kg ammonium sulfate solution to 11.5083 mmol/kg in 3.7038 mol/kg ammonium sulfate solution. The solubility of silica in solution increases slowly from 2.5509 mmol/kg in 0.5469 mol/kg ammonium sulfate solution to 7.2891 mmol/kg in 3.7038 mol/kg ammonium sulfate solution. The dissolved residue is the characteristic of hemimorphite Zn4Si2O7(OH)2·H2O based on the results of the XRD, SEM and FTIR. Thus, no phase transition occurs in the dissolution process of hemimorphite in ammonium sulfate solution.