【摘要】 目的利用高炉矿渣、粉煤灰和废玻璃为原材料制备矿渣微晶泡沫玻璃,在确定微晶泡沫玻璃配方范围的基础上,对制备微晶泡沫玻璃的核化和晶化工艺参数进行了优化,使之具有轻质高强的优良性能.方法采用粉末烧成法工艺和正交试验优化设计的试验手段.结果严格控制核化及晶化工艺参数对制备具有较高抗压强度的矿渣微晶泡沫玻璃是十分必要的。晶化温度对微晶泡沫玻璃抗压强度影响显著,晶化温度不宜过高,否则材料的抗压强度明显下降.结论确定了热处理的优化条件:核化温度为740℃,核化时间为50 min,晶化温度为910℃,晶化时间为40 min.在优化条件下制备的矿渣微晶泡沫玻璃由泡径2~3 mm的气孔、晶体和玻璃相组成,XRD显示主晶相为透辉石;表观密度946 kg/m3,抗压强度17.9 MPa,吸水率为0.25%,可代替实心粘土砖作为墙体材料使用.更多还原

【Abstract】 The method of preparing slag micro-crystallographic foamed glass by using blast-furnace slag,fly ash and waste glass as the main raw materials was discussed based on the composition range of micro-crystallographic foamed glass.The technology parameters of nucleating and crystallizing of micro-crystallographic foamed glass were optimized and the lightweight and highstrength performance of this material were obtained.The approach was to use the blast-furnace slag and the experimental method of orthogonality experiment optimal design.Results showed that controlling the technology parameters of nucleating and crystallizing strictly was necessary to prepare compressive strength of micro-crystallographic foamed glass.The crystallizing temperature should not be too high,or the compressive strength would descend distinctly.The micro-crystallographic foamed glass was made from the optimal condition:nucleating at 740?℃ for 50?min and crystallizing at 910?℃ for 40?min.The micro-crystallographic foamed glass prepared by optimal condition was composed of 2-3?mm pore,crystal and glass.XRD showed the main crystal was diopside,the apparent density of this material was 946?kg/m~3,the compressive strength was 17.9?MPa and the water absorption was 0.25%.So this material could replace solid-chamotte as wall material.更多还原