期刊文献+
共找到16篇文章
< 1 >
每页显示 20 50 100
Determining Fluid Compositions in the H_2O-NaCl-CaCl_2 System with Cryogenic Raman Spectroscopy:Application to Natural Fluid Inclusions 被引量:2
1
作者 CHU Haixia CHI Guoxiang 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2015年第3期894-901,共8页
Previous cryogenic Raman spectroscopic analysis of H_2O-NaCl-CaCl_2 solutions has identified the Raman peaks of various hydrates of NaCl and CaCl_2,and established a linear relationship between Raman band intensity of... Previous cryogenic Raman spectroscopic analysis of H_2O-NaCl-CaCl_2 solutions has identified the Raman peaks of various hydrates of NaCl and CaCl_2,and established a linear relationship between Raman band intensity of the hydrates and the composition of the solution(NaCl/(NaCl+CaCl_2) molar ratio,or X_(NaC1)) using synthetic fluids,which created the opportunity to quantitatively determine the solute composition of aqueous fluid inclusions with cryogenic Raman spectroscopy.This paper aims to test the feasibility of this newly established method with natural fluid inclusions.Twenty-five fluid inclusions in quartz from various occurrences which show a high degree of freezing during the cooling processes were carefully chosen for cryogenic Raman analysis.X_(Na)Cl was calculated using their spectra and an equation established in a previous study.These inclusions were then analyzed with the thermal decrepitation-SEM-EDS method.The X_(NaCl) values estimated from the two methods show a 1:1 correlation,indicating that the new,non-destructive cryogenic Raman spectroscopic analysis method can indeed be used for fluid inclusion compositional study. 展开更多
关键词 CRYOGENIC Raman XNaCI fluid inclusion h2O-nacl-CaCl2
下载PDF
H_2O-CO_2-NaCl体系石英溶解度模型(适用于高达1000℃、1.5GPa的高温高压环境) 被引量:3
2
作者 卫清 段振豪 毛世德 《岩石学报》 SCIE EI CAS CSCD 北大核心 2012年第8期2656-2666,共11页
石英在热水溶液中的溶解度对地球化学和岩石学的研究都极为重要。我们提出一个能够适用于H2O-CO2-NaCl复杂流体成分,高温高压(0~1000℃,0~1.5GPa)条件下的石英溶解度计算模型,形式如下:其中A(T)、B(T)、C(t)均为温度T(K)和t(℃)的多... 石英在热水溶液中的溶解度对地球化学和岩石学的研究都极为重要。我们提出一个能够适用于H2O-CO2-NaCl复杂流体成分,高温高压(0~1000℃,0~1.5GPa)条件下的石英溶解度计算模型,形式如下:其中A(T)、B(T)、C(t)均为温度T(K)和t(℃)的多项式。xH2O和V*H2O分别代表流体中水的摩尔分数和有效偏摩尔体积。V*H2O值由公式Vmix=xHOV*H2O+ΣxsVs计算得到。其中,Vmix代表流体混合物的摩尔体积,由Maoetal.(2010)的最新模型计算得到,xs和Vs分别代表溶质的摩尔分数和本征体积。具体采用VCO2=29.9cm3/mol、VNaCl=30.8cm3/mol。本模型精度较前人模型有所提高,并且适用深达下地壳的温度-压力-成分环境,如:巴罗式变质带、板块俯冲带等。另外,本模型可被用于建立石英地质温度计,加深人们对于石英脉及有关矿床成因的认识,并且可用来指导实验及工程。本模型的在线计算程序可通过以下网站获得:www.geochem-model.org。 展开更多
关键词 石英溶解度 高温高压 h2o-co2-nacl流体 计算模型
下载PDF
H_2O-CO_2体系融合二氧化硅毛细管样品原位显微激光拉曼光谱研究 被引量:4
3
作者 丁俊英 倪培 +1 位作者 管申进 王国光 《地学前缘》 EI CAS CSCD 北大核心 2011年第5期140-146,共7页
使用配备Linkam冷热台的显微激光拉曼光谱仪,采用融合二氧化硅毛细管样品,在-120~31℃温度区间,1 200~1 500cm-1光谱区间上,原位采集H2O-CO2体系流体包裹体的拉曼光谱,并针对CO2特征拉曼光谱展开分析。结果表明,融合二氧化硅毛细管样... 使用配备Linkam冷热台的显微激光拉曼光谱仪,采用融合二氧化硅毛细管样品,在-120~31℃温度区间,1 200~1 500cm-1光谱区间上,原位采集H2O-CO2体系流体包裹体的拉曼光谱,并针对CO2特征拉曼光谱展开分析。结果表明,融合二氧化硅毛细管样品中的流体具有代表性。通过对毛细管样品进行拉曼光谱采集,该实验获得了流体包裹体中CO2气相、CO2液相、CO2固相、CO2水合物相和CO2水溶液相的特征光谱。光谱分析结果显示,在实验温度区间上,CO2固相和CO2水合物相特征峰的稳定性,有助于鉴别拉曼光谱;同时,CO2气相、CO2液相和CO2水溶液相费米共振峰峰位因CO2压力或密度影响而发生变化。此外,该实验在温度变化过程中,鉴定了不同相的拉曼特征光谱。结果表明,激光拉曼光谱结合显微测温技术能够有效鉴别包裹体中不同的流体相,获得相变过程,确定相变温度。 展开更多
关键词 h2o-co2体系 融合二氧化硅毛细管 拉曼光谱学 CO2固相 CO2水溶液相
下载PDF
等容条件下H_2O-CO_2-CH_4混合流体的高温拉曼光谱就位分析 被引量:2
4
作者 陈晋阳 郑海飞 +1 位作者 曾贻善 孙樯 《高压物理学报》 CAS CSCD 北大核心 2003年第1期8-15,共8页
以合成包裹体作为腔体 ,用显微激光拉曼探针就位分析了H2 O CO2 CH4混合流体的高温特性。研究结果表明 ,在高温下 ,CH4和CO2 相互之间对各自拉曼光谱的影响不大 ,水分子对它们的拉曼峰有比较大的影响。在等容条件下 ,流体均一前 ,随着... 以合成包裹体作为腔体 ,用显微激光拉曼探针就位分析了H2 O CO2 CH4混合流体的高温特性。研究结果表明 ,在高温下 ,CH4和CO2 相互之间对各自拉曼光谱的影响不大 ,水分子对它们的拉曼峰有比较大的影响。在等容条件下 ,流体均一前 ,随着温度的升高 ,水分子的氢键几乎呈线性减少 ,均一为气相的流体 ,水分子伸缩振动拉曼峰的变化与一般气体变化相似 ;随着温度升高 ,体系压力的增加 ,最大峰频率呈很微小的降低趋势。均一为液相的流体中的水分子 ,在均一温度时 ,氢键变化发生了转折 ,均一后流体中水分子的氢键受温度的影响比均一前明显要小 ,在测量的最高温度 5 2 0℃ ,水分子存在着一定的氢键作用。一直到拉曼光谱测量的最高温度 5 80℃还未均一的流体 ,液相中水分子存在比较强的氢键作用。 展开更多
关键词 h2o-co2-Ch4混合流体 就位分析 合成包裹体 等容 高温 拉曼光谱 氢键 水分子
下载PDF
A New Method for Determining Fluid Compositions in the H_2O-NaClCaCl_2 System with Cryogenic Raman Spectroscopy 被引量:8
5
作者 CHI Guoxiang CHU Haixia +1 位作者 Ryan SCOTT CHOU I-Ming 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2014年第4期1169-1182,共14页
Raman peaks of various hydrates in the H20-NaCl-CaCl2 system have been previously identified, but a quantitative relationship between the Raman peaks and XNaCl (i.e.,NaCl/ (NaCl+CaCl2)) has not been established, ... Raman peaks of various hydrates in the H20-NaCl-CaCl2 system have been previously identified, but a quantitative relationship between the Raman peaks and XNaCl (i.e.,NaCl/ (NaCl+CaCl2)) has not been established, mainly due to the difficulty to freeze the solutions. This problem was solved by adding alumina powder to the solutions to facilitate nucleation of crystals. Cryogenic (-185℃) Raman spectroscopic studies of alumina-spiced solutions indicate that XNaCl is linearly correlated with the total peak area fraction of hydrohalite. Capsules of solutions made from silica capillary were prepared to simulate fluid inclusions. Most of these artificial fluid inclusions could not be totally frozen even at temperatures as low as -185℃, and the total peak area fraction of hydrohalite is not correlated linearly with XNaCI. However, the degree of deviation (△XNaCl) from the linear correlation established earlier is related to the amount of residual solution, which is reflected by the ratio (r) of the baseline "bump" area, resulting from the interstitial unfrozen brine near 3435 cm^-1, and the total hydrate peak area between 3350 and 3600 cm^-1. A linear correlation between △XNaCl and r is established to estimate XNaCl from cryogenic Raman spectroscopic analysis for fluid inclusions. 展开更多
关键词 CRYOGENIC RAMAN h20-nacl-CaCl2 XNaCI fluid inclusion
下载PDF
H2SO4-NaCl体系下硫精矿中铜的浸出
6
作者 余洪 邢张溪 +4 位作者 周峰 蔡祥 肖林波 金艳锋 张汉泉 《武汉工程大学学报》 CAS 2019年第5期466-470,共5页
某硫精矿直接采用浮选或硫酸浸出均无法回收其中的铜,导致铜资源浪费,且影响精矿的再利用。采用NaCl为助浸剂,H2SO4浸出该硫精矿中的铜。探讨了助浸剂的种类、NaCl浓度、H2SO4体积分数、固液比、浸出温度、浸出时间等因素对铜浸出的影... 某硫精矿直接采用浮选或硫酸浸出均无法回收其中的铜,导致铜资源浪费,且影响精矿的再利用。采用NaCl为助浸剂,H2SO4浸出该硫精矿中的铜。探讨了助浸剂的种类、NaCl浓度、H2SO4体积分数、固液比、浸出温度、浸出时间等因素对铜浸出的影响。试验表明,在H2SO4体积分数为5%、NaCl浓度为0.5mol/L、浸出温度为85℃、固液比为1∶3(g/g)时,8h内铜的浸出率可达84.02%。动力学研究表明,在H2SO4-NaCl浸出体系下硫精矿中铜的浸出受固膜扩散控制,可以通过增加温度提高浸出剂在矿物颗粒表面的扩散速率,从而提高铜的浸出率。 展开更多
关键词 硫精矿 铜浸出 h2SO4-nacl 动力学
下载PDF
小秦岭地区花岗岩体中CO_2-H_2O包裹体的找矿意义 被引量:8
7
作者 谢奕汉 范宏瑞 王英兰 《岩石学报》 SCIE EI CAS CSCD 北大核心 1998年第4期542-548,共7页
小秦岭地区与金矿成因有关的燕山期文峪花岗岩及其派生石英脉中发育了非常丰富的CO2-H2O包裹体,其流体为富含CO2的低盐度(<10%NaCl)流体,这与含金石英脉内的包裹体类型及金矿成矿流体性质上十分相似。与金矿成因... 小秦岭地区与金矿成因有关的燕山期文峪花岗岩及其派生石英脉中发育了非常丰富的CO2-H2O包裹体,其流体为富含CO2的低盐度(<10%NaCl)流体,这与含金石英脉内的包裹体类型及金矿成矿流体性质上十分相似。与金矿成因无关的华山岩体内包裹体类型则为水溶液包裹体,流体性质为贫CO2的低盐度流体。与金矿有关,但其周围矿化很差的娘娘山岩体内CO2-H2O包裹体数量很少。因此,CO2-H2O包裹体可以作为与金矿成因有关的花岗岩体关联程度的判别标志。 展开更多
关键词 CO2-h2O包裹体 花岗岩 金矿床 小秦岭 找矿
下载PDF
A Fluid Inclusion Study of Vein-type Copper Mineralization in the East Wulasigou Pb-Zn-Cu Deposit,Altay,Northwestern China 被引量:1
8
作者 BIAN Chunjing XU Jiuhua +2 位作者 CHEN Deping ZHANG Hui CHENG Xihui 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2016年第5期1754-1767,共14页
The Wulasigou Cu-Pb-Zn deposit,located 15 km northwest of Altay city in Xinjiang,is one of many Cu-Pb-Zn polymetallic deposits in the Devonian Kelan volcanic-sedimentary basin in southern Altaids.Two mineralizing peri... The Wulasigou Cu-Pb-Zn deposit,located 15 km northwest of Altay city in Xinjiang,is one of many Cu-Pb-Zn polymetallic deposits in the Devonian Kelan volcanic-sedimentary basin in southern Altaids.Two mineralizing periods can be distinguished:the marine volcanic sedimentary PbZn mineralization period,and the metamorphic hydrothermal Cu mineralization period,which is further divided into an early bedded foliated quartz vein stage(Q1) and a late sulfide-quartz vein stage(Q2) crosscutting the foliation.Four types of fluid inclusions were recognized in the Q1 and Q2 quartz from the east orebodies of the Wulasigou deposit:H2O-CO2 inclusions,carbonic fluid inclusions,aqueous fluid inclusions,and daughter mineral-bearing fluid inclusions.Microthermometric studies show that solid CO2 melting temperatures(T(m,CO2)) of H2O-CO2 inclusions in Ql are from-62.3℃ to-58.5C,clathrate melting temperatures(T(m,clath)l) are from 0.5 C to 7.5 C,partial homogenization temperatures(T(h,CO2)) vary from 3.3℃ to 25.9℃(to liquid),and the total homogenization temperatures(T(h,tot)) vary from 285℃ to 378℃,with the salinities being 4.9%-15.1%NaCl eqv.and the CO2-phase densities being 0.50-0.86 g/cm-3.H2O-CO2 inclusions in Q2 have T(m,CO2) from-61.9℃ to-56.9℃,T(m,clath)from 1.3℃ to 9.5℃,T(h,CO2) from 3.4℃ to 28.7℃(to liquid),and T(h,tot) from 242℃ to 388℃,with the salinities being 1.0%-15.5%NaCl eqv.and the CO2-phase densities being 0.48-0.89 g/cm-3.The minimum trapping pressures of fluid inclusions in Q1 and Q2 are estimated to be 260-360 MPa and180-370 MPa,respectively.The δ-(34)S values of pyrite from the volcanic sedimentary period vary from2.3‰ to 2.8‰(CDT),and those from the sulfide-quartz veins fall in a narrow range of-1.9‰ to 2.6‰(CDT).The δD values of fluid inclusions in Q2 range from-121.0‰ to-100.8‰(SMOW),and theδ-(18)O(H2O) values calculated from δ-(18)O of quartz range from-0.2‰ to 8.3‰(SMOW).The δD-δ-(18)O(H2O)data are close to the magmatic and metamorphic fields.The fluid inclusion and stable isotope data documented in this study indicate that the vein-type copper mineralization in the Wulasigou Pb-Zn-Cu deposit took place in an orogenic-metamorphic enviroment. 展开更多
关键词 Wulasigou vein copper mineralization h2o-co2 fluids metamorphic fluids stable isotopes
下载PDF
石英中合成流体包裹体H2O—CO2—NaC1体系的相状态实验研究
9
作者 科.,АР 王龙生 《国外矿床地质》 1991年第3期73-82,共10页
关键词 石英 流体 包裹体 h2o-co2-NaC1
下载PDF
对称四甲基六元瓜环与2-氨基甲基吡啶相互作用的研究 被引量:10
10
作者 赵云洁 薛赛凤 +5 位作者 张云黔 祝黔江 陶朱 张建新 魏赞斌 龙腊生 《化学学报》 SCIE CAS CSCD 北大核心 2005年第10期913-918,i002,共7页
分别用核磁共振、紫外可见吸收和X射线单晶衍射方法研究对称四甲基六元瓜环与2-氨基甲基吡啶的相互作用及其结构特征.1HNMR谱图和紫外可见吸收光谱图清晰表明,2-氨基甲基吡啶与对称四甲基六元瓜环有明显的相互作用,客体2-氨基甲基吡啶... 分别用核磁共振、紫外可见吸收和X射线单晶衍射方法研究对称四甲基六元瓜环与2-氨基甲基吡啶的相互作用及其结构特征.1HNMR谱图和紫外可见吸收光谱图清晰表明,2-氨基甲基吡啶与对称四甲基六元瓜环有明显的相互作用,客体2-氨基甲基吡啶的吡啶环部分进入了瓜环空腔,1HNMR谱图相关质子峰的积分强度以及客体吸光度随主体瓜环浓度变化明确表示它们之间形成了1∶1的包结配合物,此包结比并不随瓜环的浓度增加而改变.X射线单晶衍射法对包结配合物晶体的测定进一步证实了核磁共振、紫外可见吸收方法所得结论. 展开更多
关键词 甲基吡啶 相互作用 四甲基 瓜环 氨基 对称 X射线单晶衍射法 包结配合物 紫外可见 核磁共振 结构特征 浓度变化 积分强度 浓度增加 ^1h NMR 吸收 光谱图 吡啶环 吸光度 包结比 客体 质子 晶体
下载PDF
Improved method to determine the molar volume and compositions of the NaCl-H_2O-CO_2 system inclusion 被引量:3
11
作者 SONG YuCai1, HU WenXuan1, NI Pei1, DUAN ZhenHao2 & ZHANG XueFeng1 1 State Key Laboratory of Mineral Deposit Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, China 2 Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 《Science China Earth Sciences》 SCIE EI CAS 2007年第3期385-391,共7页
On the basis of Parry’s method (1986), an improved method was established to determine the molar volume (Vm) and compositions (X) of the NaCl-H2O-CO2 (NHC) system inclusion. To use this method, the determination of V... On the basis of Parry’s method (1986), an improved method was established to determine the molar volume (Vm) and compositions (X) of the NaCl-H2O-CO2 (NHC) system inclusion. To use this method, the determination of Vm-X only requires three microthermometric data of a NHC inclusion: partial homog-enization temperature (Th ,CO2), salinity (S) and total homogenization temperature (Th). Theoretically, four associated equations are needed containing four unknown parameters: X CO2, XNaCl, Vm and F (volume fraction of CO2 phase in total inclusion when occurring partial homogenization). When they are released, the Vm-X are determined. The former three equations, only correlated with Th ,CO2, S and F, have simplified expressions:XCO2=f1(Th,CO2,S,F),XNaCl=f2(Th,CO2,S,F),Vm=f3(Th,CO2,S,F). The last one is the thermodynamic relationship of X CO2, XNaCl, Vm and Th:f4(XCO2,XNaCl,Vm,Th)=0.Since the above four associated equations are complicated, it is necessary to adopt iterative technique to release them. The technique can be described by:(i) Freely input a F value (0≤F≤1),with Th ,CO2 and S, into the former three equations. As a result,X CO 2,XNaCl and the molar volume value recorded as Vm1 are derived. (ii) Input the X CO2 and XNaCl gotten in the step above into the last equation, and another molar volume value recorded as Vm2 is determined. (iii) If Vm1 is unequal to Vm2, the calculation will be restarted from “(i)”. The iteration is completed until Vm1 is equal to Vm2, which means that the four associated equations are released. Compared to Parry’s (1986) solution method, the improved method is more convenient to use, as well as more accurate to determine X CO 2. It is available for a NHC inlusion whose partial homogenization temperature is higher than clatherate melting temperature and there are no solid salt crystals in the inclusion at parital homogenization. 展开更多
关键词 NaCl-h2o-co2 SYSTEM inclusion MOLAR volume COMPOSITIONS improved EQUATIONS
原文传递
The fluid inclusions in jadeitite from Pharkant area, Myanmar 被引量:9
12
作者 SHI Guanghai CUI Wenyuan +1 位作者 WANG Changqiu ZHANG Wenhuai 《Chinese Science Bulletin》 SCIE EI CAS 2000年第20期1896-1901,1923,共7页
A lot of liquid-gas and liquid-gas-solid inclusions were found in Pharkant jadeitites, northwestern Myanmar and their characteristics, geological setting and porphyroclastic jadeites with inclusions in them were descr... A lot of liquid-gas and liquid-gas-solid inclusions were found in Pharkant jadeitites, northwestern Myanmar and their characteristics, geological setting and porphyroclastic jadeites with inclusions in them were described in detail. The results analyzed by Raman spectrometer showed that the component of liquid-gas phase and solid phase (daughter minerals) in fluid inclusions is H2O + CH4 and jadeite separately. The results indicated that Pharkant jadeitites were crystallized from H2O + CH4 bearing jadeitic melt which may originate from mantle. The P-T conditions in which the jadeitites were crystallized were speculated to be T】650℃, P】1.5 GPa. 展开更多
关键词 Pharkant Myanmar JADEITITE JADEITE fluid inclusion h2O + Ch4 jadeitic MELT mantle.
原文传递
The mass estimation of volatile emission during 1199-1200 AD eruption of Baitoushan volcano and its significance 被引量:8
13
作者 郭正府 刘强 +3 位作者 刘嘉麒 贺怀宇 隋淑珍 倪云燕 《Science China Earth Sciences》 SCIE EI CAS 2002年第6期530-539,共10页
On the basis of the study of volcanic products during 1199-1200AD eruption of Baitou Mountain (Baitoushan), the released volatile content was estimated by comparing Cl, F, S, H2O concentrations of undegassed glass inc... On the basis of the study of volcanic products during 1199-1200AD eruption of Baitou Mountain (Baitoushan), the released volatile content was estimated by comparing Cl, F, S, H2O concentrations of undegassed glass inclusions with those of degassed matrix glasses. The calculations show that volatile yields, released from the melt, are 109.88×106 ton of HCI, 196.80×106 ton of HF, 1477.84×106 ton of H2O, 23.14×106 ton of SO2, which could have formed 35.43×106 ton of H2SO4 aerosol in the atmosphere. They could have substantial effect on paleoclimate and paleo-environment. 展开更多
关键词 Baitoushan volcano glass inclusion h2SO4 aerosol volatile.
原文传递
The Existence of H_2S in the Hydrothermal Fluid in Baoban Gold Field,China and Its Implication
14
作者 肖志峰 欧阳自远 +1 位作者 卢焕章 Janyata Guha 《Chinese Science Bulletin》 SCIE EI CAS 1994年第3期229-232,共4页
In the research on the gold deposits,it has been proposed that gold istransported as sulfide hydrogen complex.But from the analysis of the compositionof the fluid inclusions in gold-quartz veins,only SO<sub>4<... In the research on the gold deposits,it has been proposed that gold istransported as sulfide hydrogen complex.But from the analysis of the compositionof the fluid inclusions in gold-quartz veins,only SO<sub>4</sub><sup>2-</sup> exists and no other sulfur ionshave been found.This may be ascribed to the limitations of the composition analysismethod.By using probe mass spectrometry,gas H<sub>2</sub>S has been found in the fluid in-clusions in gold deposit。but its meaning has been neglected.In China,it is thefirst time to use probe mass spectrometry to analyse the fluid inclusions composition. 展开更多
关键词 h2S fluid inclusionS gold DEPOSIT hainan.
原文传递
豫西雷门沟斑岩钼矿床成矿流体特征及其地质意义 被引量:13
15
作者 陈小丹 叶会寿 +4 位作者 毛景文 汪欢 褚松涛 程国祥 刘彦伟 《地质学报》 EI CAS CSCD 北大核心 2011年第10期1629-1643,共15页
豫西雷门沟钼矿床位于东秦岭钼矿带东段,是区内典型的斑岩型钼矿床之一。矿体主要分布于花岗斑岩与围岩新太古界太华群片麻岩的内外接触带中,呈透镜状、似层状产出。矿化类型主要有浸染状和细脉-网脉状。根据矿脉穿切关系,将热液成矿过... 豫西雷门沟钼矿床位于东秦岭钼矿带东段,是区内典型的斑岩型钼矿床之一。矿体主要分布于花岗斑岩与围岩新太古界太华群片麻岩的内外接触带中,呈透镜状、似层状产出。矿化类型主要有浸染状和细脉-网脉状。根据矿脉穿切关系,将热液成矿过程划分为4个阶段:Ⅰ)面型钾长石化阶段,Ⅱ)石英-钾长石阶段,Ⅲ)石英-辉钼矿-硫化物阶段,Ⅳ)石英-方解石阶段。矿床流体包裹体有3类:H2O包裹体(A型)、含CO2包裹体(B型)及含子矿物多相(S型)包裹体。根据不同阶段流体包裹体显微资料(成分、均一温度、盐度等)综合研究认为,本矿床成矿流体属中低温、中低盐度、低密度的H2O-CO2-NaCl体系,H、O同位素特征显示,成矿早阶段以岩浆水为主,随成矿演化有不同程度大气水的加入,C、O同位素特征表明,成矿流体有深源成分的加入。成矿过程温度降低不明显,流体不混溶作用导致矿质沉淀。结合流体包裹体特征和矿物共生组合关系认为流体不混溶、pH和氧逸度降低是矿床形成的主要因素。 展开更多
关键词 h2o-co2-nacl体系 流体包裹体 斑岩钼矿床 雷门沟 东秦岭钼矿带
下载PDF
AlCl_3-NaCl复盐为铝源电解共沉积制备镁铝合金
16
作者 刘洋 卢旭晨 +1 位作者 张志敏 陈世伟 《过程工程学报》 CAS CSCD 北大核心 2017年第5期1072-1077,共6页
以所制AlCl_3-NaCl复盐为铝源、MgCl_2·6H_2O脱水所制熔盐为电解质,电解共沉积制备镁铝合金.结果表明,当复盐中AlCl_3摩尔分数小于0.4时,其在高温下相对稳定,加入高温电解质中可有效减小AlCl_3的挥发损失;采用AlCl_3摩尔分数小于0.... 以所制AlCl_3-NaCl复盐为铝源、MgCl_2·6H_2O脱水所制熔盐为电解质,电解共沉积制备镁铝合金.结果表明,当复盐中AlCl_3摩尔分数小于0.4时,其在高温下相对稳定,加入高温电解质中可有效减小AlCl_3的挥发损失;采用AlCl_3摩尔分数小于0.5的AlCl_3-NaCl复盐作铝源所制镁铝合金的铝含量比直接以AlCl_3为铝源所制镁铝合金提高了9.5%以上,AlCl_3利用率明显提高,有效减小了铝含量与理论值的偏差;随熔盐电解质中AlCl_3浓度增加,所制镁铝合金中铝含量增加,二者呈良好的线性关系,所制Mg-13%Al合金成分宏观分布较均匀,晶粒大小为50~100mm. 展开更多
关键词 AlCl3-nacl复盐 电解共沉积 MgCl2·6h2O 镁铝合金
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部