以95%炼铁高炉渣和5%钾长石为原料,采用简易的一步烧结法制备炉渣微晶玻璃.利用X荧光,DSC,XRD,SEM等分析手段研究了粉体的化学组成、热学性能和样品的物相组成及显微形貌.结果表明:不同的晶化温度对高炉渣微晶玻璃性能有较大的影响,当晶化温度为830 ℃,烧成温度为1200 ℃时,制备的微晶玻璃主晶相为钙铝黄长石,在微晶玻璃中存在大量均匀分布的微小晶粒,其抗弯强度可达88 MPa.
Glass-ceramics were prepared using waste slag as the main staring materials via a simple sintering process. The amount of the slag used was 95wt% and the amount of potash feldspar was 5wt%. The powders and the glass-ceramics obtained were examined by X-ray fluorescence, DSC, SEM and XRD. The results indicated that the properties of the glass-ceramics obtained at various crystallization temperatures were different very much. The glass-ceramics with best properties and with the gehlenite as main crystals were obtained by crystallizing at 830 ℃ and sintering at 1200 ℃. The glass-ceramics consisting of small crystals had a high bending strength of 88 MPa.
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