瞿伟,任慧平,董方,张波,齐建波,亓捷.富镧CaO-SiO2-Al2O3-MgO渣含铝压块自还原的行为研究[J].稀有金属材料与工程,2019,48(7):2338~2343.[Qu Wei,Ren Huiping,Dong Fang,Zhang Bo,Qi Jianbo,Qi Jie.Study on the Behavior of Lanthanum-rich Aluminum-containing CaO-SiO2-Al2O3-MgO Slag Briquets Self-reduction[J].Rare Metal Materials and Engineering,2019,48(7):2338~2343.]
富镧CaO-SiO2-Al2O3-MgO渣含铝压块自还原的行为研究
投稿时间:2018-01-22  修订日期:2018-04-11
中文关键词:  稀土镧,CaO-SiO2-Al2O3-MgO渣,二元碱度,La2O3合金化量,铝还原
基金项目:国家自然科学基金资助(项目号51261018)内蒙古科技大学创新(项目号2017QDL-S02)
中文摘要:
      研究了二元碱度和La2O3含量对富镧CaO-SiO2-Al2O3-MgO渣含铝压块自还原行为的影响。将实验渣粉末和金属铝粉混匀后,压制成Φ15mm的圆柱状块体,在中频感应炉中进行了富镧渣含铝压块自还原实验。在线取铁水试样,并通过王水溶解,另外,通过非水电解法分离铁基体与基体中的非金属第二相,用王水消解非金属第二相,采用电感耦合等离子体质谱仪(ICP-MS)分析了还原入纯铁试样中的稀土镧总量和非金属第二相中的稀土镧含量,利用镧总量减去非金属第二相中的镧含量得到稀土镧在铁水中的合金化量。根据熔渣分子-离子共存理论建立熔渣活度模型,计算了1600℃时不同成分熔渣中La2O3的活度。结果表明,随着渣的二元碱度从1.05增加至3,熔渣中La2O3的活度有所下降,压块中的稀土镧往铁水中的还原并合金化的量从1.75ppm下降至0.38ppm,回收率从13.72%下降至2.93%;随着渣中La2O3含量从0.15%增加至1%,熔渣中La2O3的活度随之增加,压块中的稀土镧往铁水中的还原并合金化的量从1.75ppm增加至5.74ppm,回收率从13.72%下降至6.68%。
Study on the Behavior of Lanthanum-rich Aluminum-containing CaO-SiO2-Al2O3-MgO Slag Briquets Self-reduction
英文关键词:Lanthanum  CaO-SiO2-Al2O3-MgO slag  Binary basicity  Content of La alloying  Aluminothermic reduction
英文摘要:
      Effect of binary basicity and La2O3 content on the behavior of lanthanum-rich aluminum-containing CaO-SiO2-Al2O3-MgO slag briquets self-reduction have been researched. The blast furnace slags and aluminite powder were pressed into Φ15mm cylindrical pieces after mixing. The lanthanum-rich aluminum-containing slag briquets self-reduction experiments were proceed in the medium-frequency induction furnace. The specimens were collected online at different time and soluted the specimens by nitrohydrochloric acid. The non-metallic secondary phases were separated from iron matix by non-aqueous electrolytic process and soluted by nitrohydrochloric acid. The quantitative analysis of lanthanum which was in the iron and non-metallic secondary phases by inductively coupled plasma source mass spectrometer (ICP-MS). The content of La alloying in the iron was acquired by amount of lanthanum in the iron subtracting lanthanum in the non-metallic secondary phases. The slag activity model has been established according to the theory of moleculars-ions coexistence and the activities of La2O3 in different slags have been calculated. The results indicated that, increasing the binary basicity from 1.05 to 3 led to decreas-ing the activity of the La2O3 of the slag and lower La2O3 reduction amounts in the slag briques from 2.15ppm to 0.42ppm. The recovery radio of lanthanum was decreasing from 13.72% to 2.93%. The activity of the La2O3 of the slag and the La2O3 reduction amounts was increased from 2.15ppm to 10.94ppm with the increase of the La2O3 content from 0.15% to 1% in the slags. The recovery radio of lanthanum was decreasing from 13.72% to 6.68%.
作者单位E-mail
瞿伟 上海大学材料科学与工程学院
内蒙古自治区白云鄂博矿多金属资源综合利用省部共建国家重点实验室 
qwandzls@126.com 
任慧平 上海大学材料科学与工程学院内蒙古自治区白云鄂博矿多金属资源综合利用省部共建国家重点实验室  
董方 内蒙古自治区白云鄂博矿多金属资源综合利用省部共建国家重点实验室  
张波 东北大学冶金学院  
齐建波 内蒙古自治区白云鄂博矿多金属资源综合利用省部共建国家重点实验室  
亓捷 东北大学冶金学院  
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