稀土硅铁合金中钛含量测定.pdf

化工.进展
2014年第33卷第1期
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
研究开发
Bontototoy
稀土硅铁合金中钛含量测定
霍红英,张勇2
('攀枝花学院攀枝花钒钛检测实验室,四川攀枝花6170002攀枝花市科技发展战略研究所,四川攀枝花
617000)
摘要:研究了用二安替比林甲烷分光光度法测定稀土硅铁合金中钛含量时试样的熔融方法,即采用无水碳酸钠
和硼酸混合熔剂在高温下快速熔融试样,并探索了试样熔融的最优条件。试验结果表明:溶样完全,测试结果
稳定,误差在允许范围内,满足分析要求;该方法能快速分解矿样,测定结果准确,与采用硝酸和氢氟酸溶解
矿样相比,具有环保、快速、适应批量分析等优点。熔融稀土硅铁合金试样的最优条件是混合碱与试样比6
碳酸钠与硼酸比2:1,熔融温度1000℃,熔融时间20min;各因素影响的主次顺序为混合碱与试样比>熔融时
间>熔融温度碳酸钠与硼酸比。
关键词:稀土硅铁合金;分光光度法;熔融;分析
中图分类号:O652.4
文献标志码:A
文章编号:1000-6613(2014)01-0183-04
DOI:10.3969%3sn.10006613,2014.,01.032
Determination of titanium content in rare earth ferrosilicon alloy
HUO Hongying ZHANG Yong
Panzhihua Vanadium& Titaniun Testing Laboratory Panzhihua College, Panzhihua 617000, Sichuan, China
2 Panzhihua Institute of Science and Technology Development Strategy, Panzhihua 617000, Sichuan, China
Abstract: A melting method of titanium content determination in rare earth ferrosilicon alloy usin
spectrophotometry with diantipyrylmethane, which mixed anhydrous sodium carbonate and boric acid
to flux melting sample quickly at a high temperature was studied. The optimum condition of melting
sample was investigated. The sample could be melted completely, with stable result and error in an
allowable range, meeting the requirement of analysis. The method can quickly decompose ore sample
to obtain accurate result, with advantages of environmental protection, quick, and adaptable to the
atc
analysis as compared with dissolving sample by using nitric acid and hydrofluoric acid. The
optimum condition of melting rare earth ferrosilicon alloy was ratio of sample and mixed alkali 6. 1
ratio of sodium carbonate and boric acid 2: 1, and melting at 1000 C for 20 min. The decreasing
order of importance was ratio of sample and mixed alkali, melt time, melt temperature, and ratio of
sodium carbonate and boric acid
Key words: rare earth ferrosilicon alloy; spectrophotometry; melting; analysis
稀土硅铁合金是很多高尖端产业必不可少的和GB/T16477.5-2010)稀土硅铁合金及镁硅铁合
原料。随着国外治金技术水平的提高,稀土硅铁中金化学分析方法中钛量测定采用的是硝酸、氢氟酸
微量元素的选择控制对高品位低杂质合金质量至关溶解,硫酸冒烟驱氟的方法溶解矿样。该方法成
重要,而其钛含量状况也直接影响产品质量。由
收稿日期:2013-06-09;修改稿日期:2013-06-28。
于稀土硅铁合金结构特点,在分析测定其钛含量时,
第一作者及联系人:霍红英(1984一),女,讲师,工学硕士,主要从
矿样分解较困难。国家标准(GB/T164705--196事矿物中钒钛的检测及研究。E-mai1258167409comn