一次烧结法制取金属尾矿建筑微晶玻璃的影响因素

Influencing factors of the Metallic Tailings Building Glass-Ceramic Produced by Once sintering Method.

目的探求用一次烧结法制取金属尾矿建筑微晶玻璃的影响因素.方法通过差热分析确定微晶玻璃的最佳组成;正交优化设计实验,对一次烧结法生产金属尾矿建筑微晶玻璃的热处理制度进行优化;X射线衍射及抗压强度实验分析影响因素.结果一次烧结法生产建筑微晶玻璃的各影响因素的重要性顺序为:核化时间,晶化时间,升温速率;最佳热处理制度为:核化保温60 min,升温速率5℃/min,晶化保温60 min;一次烧结法的热处理制度经优化可将整个制备过程从6-8 h缩短到4 h内.结论用一次烧结法生产金属尾矿建筑微晶玻璃,避免了晶体在高温玻璃液中的重熔,有效控制了晶体的回吸现象,提高了产品的力学性能.

In order to study the influencing factors of the metallic tailings building glass-ceramics produced by once sintering Method. The Differential thermal analysis was taken to get the best composition; the orthogonal optimization design was used to optimize the heat treatment system, the X-ray diffraction experi- ment;and the Compressive strength experiment were taken to analyse the influencing factors. It shows that the influence ranges were：the nucleating time, the crystallization time, and the temperature-increasing rate. The best heat treatment is reached when the nucleating time is 45 min, the crystallization time is 45 min, and the rate：5℃/min. So when the once sintering method is used, the remelting can be avoided the backsiphon can be controlled, and the mechanical property will be improved.