金属铁对利用锰渣和铝质岩制备的陶瓷管性能影响研究

Research on the Effects of Metal Iron upon Ceramic Tube Made with Manganese Slag and Aluminum Rock

通过对锰渣和铝质岩进行化学成分分析和矿物成分分析,得出其主要化学成分为Si O2、Al2O3,主要矿物成分为粘土矿物,是制备陶瓷的主要成分。实验研究了不同金属铁粉含量对陶瓷烧制温度与陶瓷管力学性能的影响。并且对含不同比例金属铁粉(0%、12%、14%、16%)陶瓷管的抗压强度、吸水率、耐酸性进行了测试,得知抗压强度为39.42、45.31、54.83、55.72(MPa);吸水率为8.02%、8.73%、9.11%、9.15%;耐酸速率为0.00067、0.00063、0.00065、0.00061(g/cm2·h)。进一步对最优性能的4#陶瓷管的粉末进行XRD分析,查明主要矿物成分为77%的含铬莫来石Cr0.5(Al3.93Si1.57)O9.79,7%的方石英(Si O2)和16%的赤铁矿(Fe2O3)。显微镜下观察及扫描电镜配合能谱分析赤铁矿与莫来石紧密结合,但也存在独立界面,元素之间互相渗透而形成Al、Fe、O的混合粘结相,使金属铁陶瓷管力学性能等有较大幅度提升。

Based on the analysis ol the chemical and mineral composition of manganese slag and aluminum rock, themain chemical constituents are SiO2 and A1203, the main mineral component of clay minerals, are essential ingredientsfor preparing ceramics. The trial studied the influence of different iron content in the ceramic firing temperature andmechanical properties of the ceramic tube. And containing different proportions of iron powder （0%, 12%, 14%, 16%）of the ceramic tube compressive strength, water absorption, acid resistance were tested for compressive strength of39.42,45.31,54.83, 55.72（MPa）, water absorption of 8.02%, 8.73%, 9.11%, 9.15%, acid rate of 0.00067, 0.00063,0.00065,0.00061 （g/cm2.h）. Then the XRD analysis of the optimal performance 4e ceramic powder was further carried out toidentify the main mineral component of 77% chromium mullite Cro.5（Al3.93Si1.57）O9.79,7%cristobalite （SiO2） and 16% ofhematite （Fe203）. Microscopy and scanning electron microscopy with the EDS analysis showed that hematite and mullitewere united in wedlock, but there were also independent interface, mutual penetration between the elements and theformation of A1, Fe, O mixed binder phase, which made the mechanical properties of metal-ceramic tubes have amore substantial upgrade.