摘要
采用Factsage7.0热力学软件研究了烧结过程中痕量元素汞的形态及迁移转化规律。研究表明,在低温区汞以二价形态存在,在高温区99%的汞以单质形态存在。氯是影响汞氧化的主要元素,在含有氯元素时,800K以下汞主要以氯化汞的形式存在,850K左右是单质汞和二价汞的竞争区间,当温度高于900K时大部分汞又以单质作为稳定的存在形式。硫和氧元素对汞的氧化能力比氯弱,改变三者的含量都会使二价汞存在的温度区间发生变化。
Chemical thermal equilibrium analysis method was adopted to study morphology and distribution of trace elements of mercury in sintering process with Factsage 7.0.The results show that mercury exists in form of bivalence in low temperature region,and 99% of mercury exists in form of elementary substance in high temperature zone.Chlorine is the main effecting element on mercury oxidation.With existence of chlorine element,mercury exists in form of mercuric chloride under temperature of 800 K below,elementary substance and bivalence mercury compete at 850 K,while most of mercury exists in form of elementary substance under temperature of 900 Kabove.Compared with chlorine,sulfur and oxygen have weak oxidation capability on mercury.Change of content of Cl,S,and O will change the existing temperature interval of bivalence mercury.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2018年第1期73-76,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
国家自然科学基金资助项目(51674122)
河北省钢铁联合基金资助项目(E2016209367)
关键词
烧结
形态变化
汞元素
热力学
sintering
change of form
mercury
thermodynamics
