|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Deriving Value from Challenging Waste Streams: Recycling and Sustainability Joint Session
||B-14: Preparation of Glass-ceramic from Titanium-bearing Blast Furnace Slag by “Petrurgic” Method
||Kuiyuan Chen, Yu Li, Long Meng, Yaodong Yi, Zhancheng Guo
|On-Site Speaker (Planned)
The blast furnace slag is the main by-product in iron and steel industry. Generally, the slag discharge temperature is between 1450°C - 1550°C, contains a lot of metallurgical waste heat. In order to make full use of these metallurgical waste heat and make the slag turn into a treasure, this study explored the process of glass-ceramic prepared by titanium-bearing blast furnace slag using “Petrurgic” method, which directly used liquid slag to cool to a certain temperature and hold the temperature for some time to prepare glass-ceramic. This paper discussed influence of different crystal temperature, and conducted the longitudinal profile observation section and took SEM, XRD and compressive strength measurements and so on of the prepared samples. From the study, we can come to the conclusions that: (1) The pores in the samples are smaller and smaller as the crystallization temperature increases. (2) The grain size of perovskite decreases first and then increases as the crystallization temperature decreases. The grain size reaches the maximum at 1215°C and the minimum at 1015°C. (3) All of the samples whose phases are perovskite, diopside and gehlenite, whose compressive strength is greater than 100 Mpa, can replace the traditional natural stone (granite and marble). (4) Crystallization temperature of 1215°C is better than others.