电导率是稀土矿渣玻璃陶瓷熔融过程中最重要的物性参数之一,研究电导率对玻璃熔体熔炼工艺优化有指导作用。为了研究尾矿玻璃陶瓷生产制造的熔融过程中稀土对熔体电导率的作用,使用分析纯试剂根据玻璃陶瓷主要化学成分制备玻璃陶瓷熔体...电导率是稀土矿渣玻璃陶瓷熔融过程中最重要的物性参数之一,研究电导率对玻璃熔体熔炼工艺优化有指导作用。为了研究尾矿玻璃陶瓷生产制造的熔融过程中稀土对熔体电导率的作用,使用分析纯试剂根据玻璃陶瓷主要化学成分制备玻璃陶瓷熔体样品,采用交流四电极法研究稀土对玻璃熔体电导率的影响规律,并结合红外光谱技术分析解释熔体电导率的变化机理。研究结果表明,硅酸盐熔体中添加La_(2)O_(3)或提高CaO/SiO_(2)比值会使熔体网络结构解聚,有效提高熔体电导率,且电导率的活化能(Activation energy of electrical conductivity)与La_(2)O_(3)含量和CaO/SiO_(2)比呈负相关关系;CaO/SiO_(2)比值较低时,La_(2)O_(3)含量对活化能影响更加显著,且红外光谱曲线硅酸盐结构带高波数段变化更明显,说明熔体结构发生更强烈的解聚效应;La_(2)O_(3)在CaO/SiO_(2)比值较低时对熔体网络结构和电导率的影响更大。展开更多
The SiO_(2)'-CaO/(CaO+K_(2)O)(S'CK)diagram is an empirically derived major element-based equivalent to the modal IUGS alkali feldspar-quartz-plagioclase classification scheme for granitoids.It employs the cont...The SiO_(2)'-CaO/(CaO+K_(2)O)(S'CK)diagram is an empirically derived major element-based equivalent to the modal IUGS alkali feldspar-quartz-plagioclase classification scheme for granitoids.It employs the content of SiO_(2)and CaO/(CaO+K_(2)O)ratio to approximate the IUGS classification diagram and a normative-based Q'-ANOR plot.Four trends have been superimposed onto the SiO_(2)'-CaO/(CaO+K_(2)O)diagram based on published datasets from the Peninsular Ranges(calcic:C),Tuolumne(calc-alkalic:CA),Sherman(alkali-calcic:AC),and Bjerkreim-Sokndal(alkalic:A)batholiths,which were employed to constrain the positions of the C-CA,CA-AC and AC-A suite boundaries on the SiO_(2)versus(Na_(2)O+K_(2)O-CaO)(or modified alkali-lime index,MALI)granitic classification diagram.A merit of the SiO_(2)'-CaO/(CaO+K_(2)O)plot is identifying rock types comprising a suite and their relative abundances.The distinguished projections of five typical granitoid assemblages,which are summarized by Bonin et al.(2020),demonstrate the ability of SiO_(2)'-CaO/(CaO+K_(2)O)diagram to decipher their petrogenesis.The SiO_(2)'-CaO/(CaO+K_(2)O)plots for the plutonic suites of'known'tectonic settings can reveal their evolution paths and the lithological statistics.Accordingly,it is suggested that the SiO_(2)'-CaO/(CaO+K_(2)O)plot can distinguish the tectonic environments of plutonic suits by comparing the plutonic suites or batholiths of'unknown'tectonic context to the published datasets from granitoid suites formed within'known'tectonic settings.The modified SiO_(2)'-CaO/(CaO+K_(2)O)diagram links the bulk chemical composition of granitoid suites to the likely source,magmatic evolution,and tectonic setting;thus,it may be a useful tectono-magmatic classification scheme for granitoid suites.展开更多
文摘电导率是稀土矿渣玻璃陶瓷熔融过程中最重要的物性参数之一,研究电导率对玻璃熔体熔炼工艺优化有指导作用。为了研究尾矿玻璃陶瓷生产制造的熔融过程中稀土对熔体电导率的作用,使用分析纯试剂根据玻璃陶瓷主要化学成分制备玻璃陶瓷熔体样品,采用交流四电极法研究稀土对玻璃熔体电导率的影响规律,并结合红外光谱技术分析解释熔体电导率的变化机理。研究结果表明,硅酸盐熔体中添加La_(2)O_(3)或提高CaO/SiO_(2)比值会使熔体网络结构解聚,有效提高熔体电导率,且电导率的活化能(Activation energy of electrical conductivity)与La_(2)O_(3)含量和CaO/SiO_(2)比呈负相关关系;CaO/SiO_(2)比值较低时,La_(2)O_(3)含量对活化能影响更加显著,且红外光谱曲线硅酸盐结构带高波数段变化更明显,说明熔体结构发生更强烈的解聚效应;La_(2)O_(3)在CaO/SiO_(2)比值较低时对熔体网络结构和电导率的影响更大。
文摘The SiO_(2)'-CaO/(CaO+K_(2)O)(S'CK)diagram is an empirically derived major element-based equivalent to the modal IUGS alkali feldspar-quartz-plagioclase classification scheme for granitoids.It employs the content of SiO_(2)and CaO/(CaO+K_(2)O)ratio to approximate the IUGS classification diagram and a normative-based Q'-ANOR plot.Four trends have been superimposed onto the SiO_(2)'-CaO/(CaO+K_(2)O)diagram based on published datasets from the Peninsular Ranges(calcic:C),Tuolumne(calc-alkalic:CA),Sherman(alkali-calcic:AC),and Bjerkreim-Sokndal(alkalic:A)batholiths,which were employed to constrain the positions of the C-CA,CA-AC and AC-A suite boundaries on the SiO_(2)versus(Na_(2)O+K_(2)O-CaO)(or modified alkali-lime index,MALI)granitic classification diagram.A merit of the SiO_(2)'-CaO/(CaO+K_(2)O)plot is identifying rock types comprising a suite and their relative abundances.The distinguished projections of five typical granitoid assemblages,which are summarized by Bonin et al.(2020),demonstrate the ability of SiO_(2)'-CaO/(CaO+K_(2)O)diagram to decipher their petrogenesis.The SiO_(2)'-CaO/(CaO+K_(2)O)plots for the plutonic suites of'known'tectonic settings can reveal their evolution paths and the lithological statistics.Accordingly,it is suggested that the SiO_(2)'-CaO/(CaO+K_(2)O)plot can distinguish the tectonic environments of plutonic suits by comparing the plutonic suites or batholiths of'unknown'tectonic context to the published datasets from granitoid suites formed within'known'tectonic settings.The modified SiO_(2)'-CaO/(CaO+K_(2)O)diagram links the bulk chemical composition of granitoid suites to the likely source,magmatic evolution,and tectonic setting;thus,it may be a useful tectono-magmatic classification scheme for granitoid suites.
