【摘要】 目的研究助熔剂对一次烧结法制取铁尾矿建筑微晶玻璃配料的烧结过程和烧结制品性能的影响,实现低温烧结.方法在CaO-MgO-Al2O3-SiO2系统微晶玻璃配料中,调整助熔剂的种类与掺量,研究助熔剂对基础玻璃配料烧结制品的起始烧结温度、体积密度及显气孔率的影响.结果助熔剂可使基础玻璃配料的起始烧结温度从870℃降低到810℃,扩大了基础玻璃配料的烧结范围.基础玻璃配料烧结制品在900℃收缩剧烈,在1 250℃时候致密化完全,制品显气孔率最低,体积密度最大,出现足够的液相量可供完成晶化.结论助熔剂对一次烧结法制取铁尾矿建筑微晶玻璃低温成型起到关键作用,复合助熔剂可以降低基础玻璃配料的烧结温度和最低共熔温度,基础玻璃配料烧结制品的显气孔率明显减少,体积密度显著提高,制品成型良好.更多还原

【Abstract】 Effect of the flux on sintering process and properties of sintering produce of Iron Tailings Architecture-Glass-Ceramic Produced by One Time Sintering Forging is discussed,low temperature sintering of furnish come true.In CaOMgO-Al2O3-SiO2 system,the types and quantities of the flux is adjusted,it is researched that the flux have an effect on beginning sintering temperature,volume concentration and apparent porosity.The flux can reduce the beginning sintering temperature from 870 ℃to 810 ℃,the sintering range of the furnish is extended. At 900℃,the sintering produce contracts acutely,at 1 250 ℃,densification is finished,the apparent porosity is the lowest,and the volume concentration is the biggest.The liquid phase is enough to crystallize.The flux is crucial for low temperature molding of the Iron Tailings Architecture-Glass-Ceramic Produced.The complex flux can reduce sintering temperature and eutectic temperature.The apparent porosity of sintering produce is decreased,and volume concentration improves.更多还原