摘要
利用低品质钨钼矿进行钨钼复合合金的研制,是对其综合高效利用的有效途径。通过利用4种不同还原剂C+Si O2、Si、Si C、Ca C2对该矿进行还原反应的热力学进行了计算,分别得到还原反应完全进行开始温度为:1 552、1 403、1 613、2 002 K。由于矿中氟磷酸钙Ca5(PO4)3F结构致密、键能大,所以在还原过程中最难还原,因此降低杂质元素磷、氟的质量分数是研制高质量钨钼复合合金的关键。
An effective method for comprehensive and high-efficient utilization of low-quality tungsten and molybdenum ore is developed to obtain composite alloy of tungsten and molybdenum. The thermodynamics of reduction reactions of the ores were calculated with different reducing agents：C＋Si O2,Si,Si C,and Ca C2. The starting temperatures of reduction reactions are 1 552,1 403,1 613 and 2 002 K,respectively. Calcium fluophosphate Ca5（PO4）3F is the most difficult component in the ore to be reduced in the reduction process because of its compact structure and large bond energy.Thus the key to develop high quality composite alloy of tungsten and molybdenum is reducing the content of impurity elements P,F.
出处
《钢铁》
CAS
CSCD
北大核心
2015年第9期28-33,共6页
Iron and Steel
基金
国家自然科学基金资助项目(51144005)
国家环保公益性行业科研专项课题资助项目(201209023)
关键词
低品质钨钼矿
还原剂
热力学
反应温度
low quality tungsten molybdenum ore
reducing agent
thermodynamic
reaction temperature
