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为了提高我国低品位膨润土资源的工业附加值,本论文以山东某地低品位膨润土为原料,在工艺矿物学研究基础之上,采用水力旋流器-离心机联合提纯工艺研究了药用蒙脱石的提纯工艺以及提纯产品的药用性能。研究发现膨润土中主要杂质矿物为α-石英和长石,膨润土颗粒粒度大小和蒙脱石含量负相关,蒙脱石主要分布于-325目粒级中,该粒级中蒙脱石分布率达到46.03%。利用水力旋流器-离心机联合分选工艺,在水力旋流器给矿浓度10%,给矿压力0.05MPa,沉砂嘴直径为10mm时进行预选,蒙脱石品位提高到51.41%,相应粗精矿产率为40.98%;预选粗精矿经过离心机一次精选,三次扫选进行深度提纯,在给矿浓度5%,给矿速度1.50m~3/h,离心机转速2 304r/min的工艺条件下,获得综合精矿品位为93.56%,合计产率为9.06%,回收率为22.91%,取得较理想的分选指标,制备出的高纯蒙脱石吸附力(0.48g/g)等各项指标较好的满足了药用蒙脱石的质量指标要求,实现了低品位膨润土资源的高附加值利用。 相似文献
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新疆巴里坤膨润土的红外光谱分析 总被引:3,自引:2,他引:1
对巴里坤膨润土不同颜色的典型样品进行红外光谱测试分析,结果表明:巴里坤膨润土矿Ⅱ的膨润土的强吸收波谱出现在3627 cm-1(高频区)、1040 cm-1(中频区)、531 cm-1、470 cm-1(低频区)附近;5个代表样品的红外光谱曲线轮廓基本上一致,但仍存在一定的差异,不同颜色的膨润土因其化学成分的差异,在红外光谱曲线上有所不同,在3600 cm-1(高频区)附近,1#样品对红外光谱的吸收率较强,归属于Al—O—H的伸缩振动,说明1#样品蒙脱石的含量要高些;在797.64 cm-1(中频区)附近,1#、5#样品对红外光谱的吸收率要弱些,归属于Si—O—Si的反对称伸缩振动,说明SiO2的含量较低。 相似文献
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贵州盘县地区膨润土矿产出地质特征及其物化性能的研究 总被引:1,自引:0,他引:1
膨润土矿在本省尚为缺门矿种。通过对省内钻井泥浆粘土矿的踏勘取样,经X射线衍射、红外光谱和差热等分析、测试手段及物化性能的测定,参照矿产工业要求,首次在贵州盘县地区被前人称为“绿豆岩”的岩层中,圈出了数个膨润土矿体;对矿石及矿石中小于2μm的粘粒矿物进行了物化性能及矿石、矿物的属性研究,确定区内膨润土矿为钙基和酸性钙基膨润土,其矿石中主要矿物——蒙脱石为钙质蒙脱石的属性;该膨润土矿不宜作钻井泥浆原料,但可为油脂脱色剂之用。该地区的膨润土矿有一定的工业价值和开发利用前景。 相似文献
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对于某一特定的膨润土矿,蒙脱石含量与阳离子交换容量呈正相关,以此为依据提出了一种确定蒙脱石含量的新方法——纯样品指标标定法。对山东莱西、潍坊两地膨润土矿的实际测定结果显示,利用纯样品指标标定法确定蒙脱石含量取得了较满意的结果,说明此方法具有较大的使用价值。该方法考虑了膨润土中杂质、蒙脱石层间可交换阳离子类型及端面电荷对测定结果的影响,推荐以钠基土为试样,在pH=4的条件下采用加权法测定蒙脱石含量。 相似文献
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辽宁省阜新北窝棚膨润土矿岩石矿物学特征 总被引:1,自引:0,他引:1
北窝棚膨润土矿是近几年在阜新地区紫于盆地中发现的几处膨润土矿之一,为了全面评价北窝棚膨润土矿物理化学特性,利用X射线荧光仪、X射线粉晶衍射仪、红外光谱仪、差热分析仪等测试技术,对北窝棚膨润土矿进行了系统分析研究。测试结果显示:北窝棚膨润土矿主要化学成分为Si O2和A12O3,次要成分中Ca O和Mg O含量较高,K2O和Na2O的含量相对较低,属于钙基膨润土;膨润土矿中主要矿物组分为蒙脱石,杂质矿物为长石、石英和方石英;红外光谱分析和差热分析也验证了北窝棚膨润土矿为钙基膨润土,并具有良好的耐热性能。对合理开发北窝棚膨润土矿具有十分重要的指导意义。 相似文献
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Emily Keeble David I. Whiteside Michael J. Benton 《Proceedings of the Geologists' Association. Geologists' Association》2018,129(2):99-119
Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco. 相似文献
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Gilles Serge Odin 《Comptes Rendus Geoscience》2002,334(6):409-414
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414. 相似文献
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The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts 总被引:4,自引:0,他引:4
The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H2O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H2O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species. 相似文献
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Emmanuel Skourtsos Daniel Vachard Alexandra Zambetakis-Lekkas Rossana Martini Louisette Zaninetti 《Comptes Rendus Geoscience》2002,334(12):925-931
Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931. 相似文献
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正20141596 Liu Yunhuan(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China);Shao Tiequan Early Cambrian Quadrapyrgites Fossils of Xixiang Boita in Southern Shaanxi Province(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,35(3),2013,p.39-43,3 illus.,20 refs.) 相似文献
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正20141719 Chen Zhijun(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China);Chen Jianguo Automated Batch Mapping Solution for Serial Maps:A Case Study of Exploration Geochemistry Maps(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.456-464,2 illus.,2 tables,10 refs.) 相似文献
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正20140962 Chen Fenning(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Chen Ruiming Late Miocene-Early Pleistocene Ostracoda Fauna of Gyirong Basin,Southern Tibet(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,87(6),2013,p.872-886,6illus.,56refs.) 相似文献
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正1.IGNEOUS PETROLOGY20142008Cai Jinhui(Wuhan Center,China Geological Survey,Wuhan 430205,China);Liu Wei Zircon U-Pb Geochronology and Mineralization Significance of Granodiorites from Fuzichong Pb-Zn Deposit,Guangxi,South China(Geology and Mineral Resources of South China,ISSN1007-3701,CN42-1417/P,29(4),2013,p.271-281,7illus., 相似文献
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正20141205Cheng Weiming(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Xia Yao Regional Hazard Assessment of Disaster Environment for Debris Flows:Taking Jundu Mountain,Beijing as an 相似文献
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正20141266Fan Chaoyan(Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes,Guangzhou 510275,China);Wang Zhenghai On Error Analysis and Correction Method of Measured Strata Section with Wire Projection Method(Journal of 相似文献