利用液态磷渣制备乳浊玻璃

为实现炼磷排放的高温液态磷渣的热能、物质的同步回收利用, 并消除其环境污染问题, 通过现场试验, 以高温液态磷渣为主要原料, 直接与16.5%的石英粉和8.5%的高岭土热配合, 再经1450℃熔炼、浇铸成型和850℃乳化热处理, 制得了乳浊玻璃板材.磷渣乳浊玻璃的抗折强度为43.68MPa, 耐酸性为0.51%, 耐碱性为0.04%, 能满足建筑装饰材料的质量要求.ESEM、XRD和EDS分析结果共同表明, 母玻璃的乳浊机理在于主体玻璃中析出了富Ca元素的粒径为0.1~0.4μm的非晶质球形颗粒.由于高温液态磷渣掺量高达75%, 改性剂掺量低且成本低廉, 生产线易于配置, 本研究具有较高的工业化生产可行性、较佳的经济效益和应用前景. 

On-Site Preparation of Opaque Glass Using Liquid Phosphorus Slag

In order to recycle both the heat energy and the material of hot liquid phosphorus slag discharged from the phosphorus smelting furnace and eliminate its environmental problem, on-site preparation tests were carried out beside the smelting furnace by undertaking the following process: first, 75.0 % fresh hot liquid phosphorus slag was mixed directly with 16.5% quartz powder and 8.5% kaolin clay, and then melted at 1450℃ and cast-molded into parent glass panels which were subsequently heat-treated at 850℃ and transformed into opaque glass, which possesses bending strength, acid resistance and alkali resistance respectively of 43.68MPa, 0.51% and 0.04%, and so is applicable for wall decorating in buildings.Resultsof ESEM, XRD and EDS analyses indicate that the mechanism of emulsification of parent glass is attributed to the phase separation of parent glass and so the deposition of the non-crystalline spherical granules with particle sizes of about 0.1-0.4μm. Since high proportion of hot liquid phosphorus slag is consumed, cheap modifying raw materials are used and ordinary glass manufacturing facilities can be directly employed, the proposed on-site test process is cost-effective and feasible for industrial manufacturing.