电解锰渣制备微晶玻璃正交实验研究

将煅烧后的电解锰渣作为单一的实验原料,采用烧结法,制备微晶玻璃,通过正交实验对锰渣微晶玻璃的热处理方案及性能进行探讨。实验通过DSC、XRD、SEM等方法对样品的性能进行表征,并测试了样品的体积密度、抗弯强度等性能。结果显示:不同的热处理条件下的锰渣微晶玻璃的主晶相均为透辉石(含铁),次晶相为普通辉石相。在800℃/0.5 h+980℃/1 h的热处理条件下得到的锰渣微晶玻璃的综合性能最优,其抗弯强度为106.82 MPa;体积密度为2.68 g/cm^3;维氏硬度为4.43 GPa;耐酸度为0.71%;耐碱度为0.07%。此外,锰渣微晶玻璃用作建筑材料,有非常大的应用潜力。

Orthogonal Experimental Study on Preparation of Glass-Ceramics from Electrolytic Manganese Residue

With the calcined electrolytic manganese residue as a single experimental raw, glass-ceramics were prepared by sintering method. The heat treatment scheme and properties of manganese residue glass-ceramics were discussed through orthogonal experiment. The properties of glass-ceramics were characterized by differential scanning calorimeter(DSC), X-Ray diffraction(XRD), scanning electron microscopy(SEM) and other methods. The bulk density and flexural strength of the samples also were tested. The results show that the main crystalline phase of all manganese residue glass-ceramics under different heat treatment conditions is diopside(containing iron), and the second crystalline phase is augite.The manganese residue glass-ceramics at 800 ℃/0.5 h and 980 ℃/1 h has the best comprehensive properties with a bending strength of 106.82 MPa, a bulk density of 2.68 g/cm^3, a Vickers hardness of 4.43 GPa, a acid resistance of 0.71%, and a alkali resistance of 0.07%. In addition, manganese residue glass-ceramics can be used as building materials, which has a great application potential.