玻璃窑用后镁铬残砖对水环境的影响  

Research of magnesia-chromite brick's impacts on water environment which used in glass furnace

作　　者：张晋 王秉军 袁林 

机构地区：[1]新冶高科技集团有限公司,北京100081 [2]瑞泰科技股份有限公司,北京100024

出　　处：《中国建材科技》2016年第2期38-41,共4页China Building Materials Science & Technology

基　　金：国家科技支撑计划项目课题"高性能石英玻璃;微晶玻璃等特种材料关键技术研发与示范"课题编号:2013BAE03B01资助进行

摘　　要：通过对玻璃窑镁铬残砖的化学成分分析研究,Na2Cr O4是残砖中残留的主要Cr6+化合物。从不同浮法玻璃窑的蓄热室侧墙与格子砖采集样本进行试验,结果显示玻璃窑镁铬残砖的Cr6+含量以侧墙砖中残留居多。一条日产量600吨的浮法玻璃熔窑每五年进行冷修所排放固体废弃物中以格子砖计算其含Cr6+总量约为85Kg,需使用约为其原始重量的5000倍左右的净水方能稀释至符合排放标准。粗略估算全国范围内仅浮法玻璃窑每年就需要约7000万立方米净水对其用后耐火材料进行稀释方可以满足环境水排放标准,若扩大到整个玻璃行业每年需水量将超过1亿立方米。Chemical composition analysis showed the Na2CrO4 is the mare Cr^6＋ compounds m me resmue magnesia chrome bricks.Through the test on the side wall bricks and the checker bricks from the float glass furnace regenerator, results showed that more residue magnesia chrome bricks Cr^6＋ contained in side wall bricks.Once a daily output 600 tons float glass furnace maintenance every five years in general,the solid waste emissions（checker bricks for samples） containing Cr^6＋ amount is about 85Kg.As rough estimate, only float glass furnace nationwide required about 70 million cubic meters water each year to dilution the residue refractories to meet the environmental water discharge standard.And if extended to the whole glass industry will be more than 100 million cubic meters of water demand every year

关 键 词：玻璃窑 镁铬砖 六价铬 

分 类 号：TU522[建筑科学—建筑技术科学] X502[环境科学与工程—环境工程]