外文翻譯---制備及鼓風(fēng)爐產(chǎn)生的玻璃陶瓷渣性能燒結(jié)過程(已修改)
2025-06-01 10:31 本頁面
【正文】 Preparation and properties of glass–ceramics derived from blastfurnace slag by a ceramicsintering process Abstract Glass–ceramics were synthesized using ground blastfurnace slag and potash feldspar additives by a conventional ceramicsintering route. The results show 5 wt% potash feldspar can enhance the sintering properties of blastfurnace slag glass and the results glass–ceramics have desirable mechanical properties. The main crystalline phase of the obtained glass–ceramic is gehlenite (2CaO_Al2O3_SiO2). A high microhardness of GPa and a bending strength higher than 85 MPa as well as a water absorption lower than % were obtained. 2020 Elsevier Ltd and Techna Group . All rights reserved. 1. Introduction Glass–ceramics are finegrained polycrystalline materials formed when glasses of suitable positions are heattreated and thus undergo controlled crystallization to reach a lower energy crystalline state [1]. Since the early 1960s, using waste to prepare glass–ceramics has been developed in Russia, by employing slag of ferrous and nonferrous metallurgy, ashes and wastes from mining and chemical industries [2]. Lately, the waste of coal bustion ash, fly ash and filter dusts from waste incinerators, mud from metal hydrometallurgy, pass cement dust, different types of sludge and glass cullet or mixtures of them have been considered for the production of glass– ceramics [3–7]. Using waste to prepare glass–ceramics is significant for industrial applications as well as for environment protection [8] The conventional approaches to sinter glass–ceramics usually include two steps: first vitrifying raw materials at a high temperature (1300–1500 8C) and then following a nucleation and crystal growth step. The disadvantage of the conventional route is that it is difficult to vitrify the raw materials and the high energy consumption in this step. An alternative manufacturing method to produce sintered glass–. ceramics, in which sintering and crystallization of fine glass powders take place simultaneously, has recently been reported[9]. In such route fine glass powders are pressed and sintered, and the crystallization occurs with densification. However, this route also needs a short time to vitrify raw materials at high temperature
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