铬铁渣掺杂量对电解锰渣微晶玻璃结构及性能的影响

Effect of Ferrochromium Slag Doping Content on the Structure and Properties of Glass-Ceramics from Electrolytic Manganese Slag

以铬铁渣和煅烧除硫后的电解锰渣作为主要原料,以熔融法制备微晶玻璃。利用差示扫描量热、X射线衍射、电子扫描显微镜等方法,研究铬铁渣的不同掺杂比例对锰渣微晶玻璃的性能的影响规律。结果显示:改变铬铁渣掺杂量并不会使微晶玻璃主晶相发生明显改变,均为透辉石相,但随着铬铁渣掺杂量升高,出现了次晶相尖晶石相的衍射峰。最佳掺杂比例为12%铬铁渣+88%电解锰渣,在此条件下得到的微晶玻璃综合性能最好,抗弯强度达到88.60 MPa;体积密度达到3.02 g/cm^(3);维氏硬度达到8.33 GPa;耐酸度为98.2%;耐碱度为99.5%。

Using ferrochromium slag and electrolytic manganese slag after calcining and removing sulfur as main raw materials,glass-ceramics are prepared by melting method.Using differential scanning calorimetry,X-ray diffraction,scanning electron microscopy,and other methods,the influence of different doping ratios of ferrochromium slag on the properties of manganese slag glass-ceramics was studied.The results show that changing the doping amount of ferrochromium slag does not significantly change the main crystal phase of glass-ceramics,all of which are diopside phases,but with the increase of doping amount of ferrochromium slag,the diffraction peaks of the sub crystalline spinel phase appear.The optimal doping ratio is 12%ferrochromium slag+88%electrolytic manganese slag,and the glass-ceramic obtained under this condition has the best comprehensive performance,the flexural strength reaches 88.60 MPa;the bulk density reaches 3.02 g/cm^(3);Vickers hardness Reach 8.33 GPa;acid resistance is 98.2%;alkali resistance is 99.5%.