磷酸三钠对高钛高炉渣制备微晶泡沫玻璃的影响  

Effect of Na_(3)PO_(4)·12H_(2)O on foam glass-ceramics prepared from high titanium blast furnace slag

作　　者：王海波 孙青竹 张雪峰 王本菊 Wang Haibo;Sun Qingzhu;Zhang Xuefeng;Wang Benju(College of Vanadium and Titanium,Panzhihua University,Panzhihua 617000,Sichuan,China;Vanadium and Titanium Resources Comprehensive Utilization Key Laboratory of Sichuan Province,Panzhihua 617000,Sichuan,China;Public Experimental Teaching Center,Panzhihua University,Panzhihua 617000,Sichuan,China)

机构地区：[1]攀枝花学院钒钛学院,四川攀枝花617000 [2]钒钛资源综合利用四川省重点实验室,四川攀枝花617000 [3]攀枝花学院公共实验教学中心,四川攀枝花617000

出　　处：《钢铁钒钛》2021年第4期57-61,共5页Iron Steel Vanadium Titanium

基　　金：四川省科技厅应用基础研究项目(2018JY0325,2019YJ0685);四川省教育厅重点项目(18ZA0290);钒钛资源综合利用四川省重点实验室开放基金资助(2019FTSZ15)。

摘　　要：以高钛型高炉渣和废玻璃粉为主要原料,碳酸钙为发泡剂,硼砂为助熔剂,采用"一步法"烧结在900℃低温下制备了微晶泡沫玻璃。借助DSC、XRD、SEM等分析测试手段,研究了磷酸三钠(Na_(3)PO_(4)·12H_(2)O)添加量对制备微晶泡沫玻璃的影响。结果表明,在不同的磷酸三钠添加量(0%~10%,质量分数)下,微晶泡沫玻璃的主要物相变化不显著,均为透辉石Ca(Mg,Al)(Si,Al)_(2)O_(6),富铁普通辉石Ca(Mg,Fe)(Si,Fe)_(2)O_(6)以及普通辉石CaMgSi_(2)O_(6);随着Na_(3)PO_(4)·12H2O含量增加,微晶泡沫玻璃抗压强度和导热系数减小,体积密度和吸水率先减小后增大。当磷酸三钠添加量为6%时,微晶泡沫玻璃具有最优的综合性能。Foam glass-ceramics was prepared by one step sintering method at 900℃,using high titanium blast furnace slag and waste glass powder as the main raw materials,with calcium carbonate and borax as the foaming agent and fluxing agent,respectively.The effects of Na_(3)PO_(4)·12 H_(2)O on the foam glass-ceramics were investigated by DSC,XRD and SEM.The results show that the main phase compositions of the glass-ceramics,which include diopside Ca(Mg,Al)(Si,Al)_(2)O_(6),iron-rich common pyroxene Ca(Mg,Fe)(Si,Fe)_(2)O_(6)and common pyroxene CaMgSi_(2)O_(6),change scarcely with the variation of Na_(3)PO_(4)·12 H_(2)O addition(0%to 10%,mass fraction).As the content of Na_(3)PO4·12 H2 O increases,the compressive strength and thermal conductivity of the foam glass-ceramics decrease,while the bulk density and water absorption decrease first and then increase.At the Na3 PO4·12 H2 O content of 6%,the foam glass-ceramics has the best comprehensive performances.

关 键 词：高钛高炉渣 微晶泡沫玻璃 Na_(3)PO_(4)·12H_(2)O 抗压强度 体积密度 导热系数 吸水率 

分 类 号：X757[环境科学与工程—环境工程] TQ171.72[化学工程—玻璃工业]