摘要
以铬渣为主要原料采用熔融法制备了性能良好的微晶玻璃.运用XRD研究了材料的晶相组成,采用二苯碳酰二胼分光光度法测定了样品中残留Cr6+的含量.结果表明,当铬渣质量分数为40%和45%时,微晶玻璃中主晶相为镁铬尖晶石(MgCr2O4)、透辉石(CaMg(SiO3)2)和普通辉石(Ca(Mg,Fe)Si2O6);当铬渣质量分数增加到50%时,主晶相为黄长石类晶体;铬渣质量分数不超过50%时,微晶玻璃中残留Cr6+含量为0～0.4 mg/L,低于0.5 mg/L的国家排放标准.
A glass-ceramics was prepared with melt quenching technology using chromium slag as the major material. Phase compositions of the glass-ceramics were investigated with X-ray diffraction. The concentration of residual Cr^6＋ ion in the specimens was determined with diphenylcarbazide （DPC） spectrophotom. Experiment results showed that, when the content of chromium slag was 40wt % and 45 wt 96, the major crystalline phases were magnesiochromite （MgCr2O4）, diopside （CaM（SiO）3）2） and augite （Ca（Mg,Fe）Si2O6）. When the content of chromium slag increased to 50wt%, the major crystalline changed to melilite. When the content of chromium slag was less than 50wt%, the residual Cr6＋ ion in the glass-ceramics was 0-0.4 mg/L, which was less than the national standard of O. 5 mg/L for emission.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第4期82-87,共6页
Journal of Hunan University:Natural Sciences
基金
国家自然科学基金委和上海宝钢公司联合资助项目(50174024)
关键词
铬渣
微晶玻璃
残留Cr^6+
熔融法
chromium slag
glass-ceramics
concentration of residual Cr^6＋ ion
