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首页> 外文会议>Energy Technologies Symposium >Preparation of Glass-Ceramic from Titanium-Bearing Blast Furnace Slag by 'Petrurgic' Method
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Preparation of Glass-Ceramic from Titanium-Bearing Blast Furnace Slag by 'Petrurgic' Method

机译：“岩石”法制备钛含钛炉渣玻璃陶瓷

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摘要

Blast furnace slag is the main by-product discharged in the iron and steel industry and contains considerable waste heat at dischargeing temperature between 1450 and 1550°C. To fully utilize waste heat and slag, this study directly converted high temperature liquid Ti-bearing blast furnace slag into glass-ceramics via the "Petrurgic" method. Samples at different crystallization temperature were prepared and its influence on crystal phases, pore structure, and compressive strength were investigated via SEM, XRD techniques, and compressive strength measurements. Results showed that all glass-ceramic samples contained main crystals of perovskite, diopside and gehlenite and had a qualified mechanical performance with compressive strength above 100 Mpa, which meets the requirement of Chinese national standard for natural granite stone. With increasing crystallization temperature, pore size decreased, while the size of the perovskite phase firstly decreased and then increased with decreasing crystallization temperature. Samples had an optimum crystallization temperature of 1215°C, maximum grain size and a densified structure with minimal pore defect.
机译：高炉炉渣是在钢铁工业中排出的主要副产物，并在1450至1550°C的排出温度下含有相当大的废热。为了充分利用废热和渣，本研究通过“岩石”方法直接转换为玻璃陶瓷的高温液体Ti轴承高炉炉渣。制备不同结晶温度的样品，通过SEM，XRD技术和抗压强度测量研究其对晶相，孔隙结构和抗压强度的影响。结果表明，所有玻璃陶瓷样品都含有钙钛矿，缩孔和胶石的主要晶体，并具有100 MPa高于100 MPa的抗压强度的合格的机械性能，这符合中国国家标准的天然花岗岩石材的要求。随着结晶温度的增加，孔径下降，而钙钛矿相的尺寸首先降低，然后随着结晶温度的降低而增加。样品具有1215℃，最大粒度和致密结构的最佳结晶温度，具有最小的孔隙缺损。

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