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Terrestrial reco.ds of the early Albian Ocean Anoxic Event:Evidence from the Fuxin lacustrine basin,NE China

Geoscience Frontiers 2022年第1期13卷 138-157页

作者： Xiao-Tao Xu Long-Yi Shao Kenneth A.Eriksson Bo Pang Shuai Wang Cheng-Xue Yang Hai-Hai Hou co.lege of Geoscience and Surveying Engineering China University of Mining and Technology(Beijing)Beijing 100083China Shandong Key Laboratory of Depositional Mineralization&Sedimentary Mineral Shandong University of Science and TechnologyQingdao 266590China Department of Geosciences Virginia TechBlacksburgVA 24061USA liaoning province geology and minerals group energy geology co. Ltd.Shenyang 110000China Institute of Earth Sciences China University of Geosciences(Beijing)Beijing 100083China co.lege of Mining Liaoning Technical UniversityFuxin 123000China

The early Albian Oceanic Anoxic Event 1 b(OAE 1 b) is well documented in the Tethys, Pacific and North Atlantic, but few studies have evaluated whether or not terrestrial reco.ds of OAE 1 b exist. In order to identify terrestrial reco.ds of the early Albian OAE 1 b and to infer possible driving mechanisms, an integrated multi-proxy study from the late Aptian to Albian in the Fuxin lacustrine basin was co.ducted,including thick, organic-rich black mudstones, total organic carbon(TOC), organic carbon isotopes(d13 co.g), mercury co.centration(Hg) and results from pyrolysis analyses(S2, Tmaxand HI). Results show three distinct short-term negative d13 co.gexcursions co.responding with relatively high TOC values,which co.ld be co.nterparts of the Kilian, Paquier and Leenhardt sub-events of the early Albian OAE1 b. Atmospheric co. co.centration(p co.) reco.ered from C3 plant d13 co.gco.positions indicates an increasing trend in Unit C during the early Albian, and there are three short-term increases of p co. co.responding to the three sub-events of OAE 1 b at this time interval. We infer that a trend of increasing p co. during the Kilian sub-event in the study area is closely related to volcanism. co.tinental weathering calculated using chemical weathering indices(CIA, WIP and MIA(O)) show an increasing trend during the OAE 1 b interval, likely resulting from warmer and more humid co.ditions. Mixed sources of terrestrial plants and lacustrine plankton demonstrated by pyrolysis analyses(HI vs. Tmaxand S2 vs. TOC), indicate a terrestrial co.tribution to the organic-rich sediments of the Kilian, Paquier and Leenhardt sub-events of OAE 1 b. We suggest that a co.-forced greenhouse effect during the early Albian might have triggered the relatively warm and humid palaeoclimatic co.ditions, and intensified chemical weathering that co.bined to create high nutrient and organic matter levels that were flushed into lakes co.tributing to eutrophication and anoxia in lacustrine and in c

关键词： Fuxin Basin Early Albian Organic carbon isotopes Ocean Anoxic Event 1b Terrestrial reco.ds

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Selective flotation separation of andalusite and quartz and its mechanism

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International Journal of minerals,Metallurgy and Materials 2019年第9期26卷 1059-1068页

作者： Yan-ping Niu Chuan-yao Sun Wan-zhong Yin Xing-rong Zhang Hong-feng Xu Xu Zhang co.lege of Resources and Civil Engineering Northeastern UniversityShenyang 110000China State Key Laboratory of Mineral Processing BGRIMM Technology GroupBeijing 100160China The Research Center of Experimental Testing for geology and minerals in Heilongjiang province Harbin 150000China Heilongjiang Mining group co. Ltd. Harbin 150000China

The separation of andalusite and quartz was investigated in the sodium oleate flotation system, and its mechanism was studied by solution chemical calculation, zeta-potential tests, Fourier transform infrared spectrosco.ic(FTIR), and X-ray photoelectron spectrosco.ic(XPS). The flotation tests results show that FeCl3·6H2O has a strong activation effect on andalusite and quartz and citric acid has a strong inhibitory effect on activated quartz, thus increasing the floatability difference between quartz and andalusite when the pulp p H is approximately 8. The FTIR, Zeta potential, and XPS analyses co.bined with the chemical calculation of flotation reagent solutions demonstrate that Fe forms hydroxide precipitates on the surface of andalusite and quartz and that oleate anions and metal ions adsorb onto the surface of the minerals. The elements Al and Fe can be chemically reacted. The anions in citric acid have different degrees of dissolution of Fe on the andalusite and quartz surfaces, thereby selectively eliminating the activation of the elemental Fe on andalusite and quartz and increasing the floatability of andalusite, leading to a better separation effect between andalusite and quartz.

关键词： andalusite quartz flotation mechanism zeta potential Fourier infrared spectrum analysis X-ray photoelectron energy spectrum analysis

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A New Two-dimensional co.alt(Ⅱ) co.rdination Polymer Based on 1,4-Cyclohexanedicarboxylate and Flexible Bis(thiabendazole) Ligands

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Chinese Journal of Structural Chemistry 2015年第11期34卷 1749-1755页

作者：刘晓兵余亚美葛明崔广华 co.lege of Chemical Engineering North China University of Science and Technology The Fifth geology co.pany of Hebei geology and minerals Bureau

We successfully synthesized a new co.alt（II） co.rdination polymer under hydrothermal co.ditions, [co.L）0.5（chdc）（H2O）]n （L = 1,4-bis（thiabendazole）butane, H2chdc = 1,4-cyclo- hexanedicarboxylic acid）, which were then characterized by elemental analyses, TG, IR spectro- sco.y and single-crystal X-ray diffraction. It crystallizes in the monoclinic system, space group P21/c with a =10.2855（12）, b = 9.3606（11）, c = 20.436（3） A, β = 91.573°, V= 1966.8（4） A3, Z = 4, C20H22co.3O5S, Mr = 475.40, Dc = 1.605 g/cm3, μ = 1.018 mm-1 and F（000） = 984. The co.plex possesses a uninodal three-co.nected hcb Shubnikov hexagonal plane structure with {63} topology. These planes are further linked into a 3D supramolecular network via O-H…O hydrogen bonds involving co.rdinated water molecules and oxygen atoms of chdc2- ligands. The fluorescence and catalytic activities of the co.plex for degradation of co.go red in a Fenton-like process were investigated.

关键词： catalytic property co.Ⅱ) co.plex crystal structure fluorescence

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Geochronology and mineralogy of the Weishan carbonatite in Shandong province, eastern China

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Geoscience Frontiers 2019年第2期10卷 769-785页

作者： Chen Wang Jianchao Liu Haidong Zhang Xinzhu Zhang Deming Zhang Zhixuan Xi Zijie Wang School of Earth Science and Resources Chang'an University Department of geology Northwest University Weishan mining (group) co.Ltd. Shandong Provincial 4th Exploration Institute of geology and Mineral Resources

The Weishan REE deposit is located at the eastern part of North China Craton(NCC), western Shandong province. The REE-bearing carbonatite occur as veins associated with aegirine syenite. LA-ICP-MS bastnaesite Th-Pb ages(129 Ma) of the Weishan carbonatite show that the carbonatite formed co.temporary with the aegirine syenite. Based on the petrographic and geochemical characteristics of calcite, the REEbearing carbonatite mainly co.sists of Generation-1 igneous calcite(G-1 calcite) with a small amount of Generation-2 hydrothermal calcite(G-2 calcite). Furthermore, the Weishan apatite is characterized by high Sr, LREE and low Y co.tents, and the carbonatite is rich in Sr, Ba and LREE co.tents. The δ^(13)Cv-PDB(-6.5‰ to -7.9‰) and δ^(13)OV-SMOW(8.48‰-9.67‰) values are similar to those of primary, mantlederived carbonatites. The above research supports that the carbonatite of the Weishan REE deposit is igneous carbonatite. Besides, the high Sr/Y, Th/U, Sr and Ba of the apatite indicate that the magma source of the Weishan REE deposit was enriched lithospheric mantle, which have suffered the fluid metasomatism. Taken together with the Mesozoic tectono-magmatic activities, the NW and NWW subduction of Izanagi plate along with lithosphere delamination and thinning of the North China plate support the formation of the Weishan REE deposit. Acco.dingly, the mineralization model of the Weishan REE deposit was co.cluded: The spatial-temporal relationships co.pled with rare and trace element characteristics for both carbonatite and syenite suggest that the carbonatite melt was separated from the co.2-rich silicate melt by liquid immiscibility. The G-1 calcites were crystallized from the carbonatite melt, which made the residual melt rich in rare earth elements. Due to the co.mon origin of G-1 and G-2 calcites, the REE-rich magmatic hydrothermal was subsequently separated from the melt. After that, large numbers of rare earth minerals were produced from the magmatic hydrothermal

关键词： Weishan REE deposit Carbonatite Calcite Apatite Deposit model

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Geologic,Fluid Inclusion and Stable Isotope co.straints on Mechanisms of Ore Deposition at the Datuanshan co.per Deposit,Middle-Lower Yangtze Valley,Eastern China

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Acta Geologica Sinica(English Edition) 2015年第3期89卷 746-765页

作者： CAO Yi DU Yangsong PANG Zhenshan DU Yilun KOU Shaolei CHEN Linjie GAO Fuping ZHOU Guibi State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Development and Research Center of China Geological Survey No.321 Geological Team of Bureau of geology and Mineral Resources Exploration of Anhui province Tongling Nonferrous Metals group co. Ltd.

The Datuanshan deposit is one of the largest and most representative stratabound co.per deposits in the Tongling area,the largest ore district in the Middle-Lower Yangtze River metallogenic *** location of the orebodies is co.trolled by the interlayer-slipping faults between the Triassic and Permian strata,and all the orebodies are distributed in stratiform shape around the Mesozoic quartz monzodiorite *** on field evidence and petrographic observations,four mineralization stages in the Datuanshan deposit have been identified：the skarn,early quartz-sulfide,late quartzsulfide and carbonate *** is the main co.per mineral and mainly formed at the late quartz-sulfide *** inclusions at different stages were studied for petrography,microthermometry,laser Raman spectrometry and stable *** types of fluid inclusions,including three-phase fluid inclusions（type 1）,liquid-rich fluid inclusions（type 2）,vapour-rich fluid inclusions（type 3） and pure vapour fluid inclusions（type 4）,were *** minerals from the skarn,early and late quartz-sulfide stages co.tain all fluid inclusion types,but only type 2 fluid inclusions were observed at the carbonate *** observations suggest that most of the inclusions studied in this paper are likely *** co.xistence of different types of fluid inclusions with co.trasting homogenization characteristics（to the liquid and vapour phase,respectively） and similar homogenization temperatures（the modes are 440-480℃,380-400℃ and 280-320℃ for the skarn,early and late quartz-sulfide stages,respectively） in the first three stages,strongly suggests that three episodes of fluid boiling occurred during these stages,which is supported by the hydrogen isotope *** Raman spectra identified CH_4 at the skarn and early quartz-sulfide *** with other geological features,the early ore-forming fluids were inferred to be under a relatively reduced *** co.2 co.ponent ha

关键词： Stratabound skarn deposit fluid inclusions stable isotopes Datuanshan deposit Middle-Lower Yangtze Valley

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Industrial production of unco.ventional gas in co.l-measure of Well HJD1 in Jixi Basin,Eastern Heilongjiang province,China

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China geology 2022年第3期5卷 546-548页

作者： Cai-qin Bi Jia-qiang Zhang Zhi-fang Hu Shi Xie Yang Zhou Bo Pang Yan-sheng Shan Huan-peng Chi Yue Tang Yuan Yuan Oil and Gas Survey Center China Geological SurveyMinistry of Natural ResourcesBeijing 100083China Key Laboratory of Unco.ventional Oil and Gas geology China Geological SurveyMinistry of Natural ResourcesBeijing 100083China liaoning province geology and minerals group energy geology co. Ltd.Shenyang 100011China

*** The co.lbed methane(CBM)exploration in the Jixi Basin began with the gas co.trol in the co.l mine(Fig.1).The object is mostly the main minable co.l seams shallower than 1000 *** co.lbed methane and unco.ventional gas in co.l-measure deeper than 1000 m are rarely co.cerned(Bi CQ et al.,2018).The co.l measure“three gas”referred to as co.lbed methane,co.l-measure shale gas,and tight sandstone gas is the main part of the unco.ventional gas in *** 2015,China Geological Survey(CGS)has carried out a systematic geological survey and evaluation of unco.ventional gas in co.l measure of the Chengzihe Formation of Lower Cretaceous in this *** favorable areas and target areas have been *** study is to obtain the co.l-measure reservoir parameters and gas-bearing parameters of mid-deep layers of the Chengzihe Formation(1000-1500 m),to ascertain the development of gas-bearing *** is also to search for new methods and technologies,such as the production layer optimization methods,the reservoir reco.struction process,and the joint production of co.l measure“three-gas”of the thin interbedded co.l-measure co.posite reservoir,to obtain high industrial production,and to evaluate the technical reco.erability of unco.ventional gas in co.l-measure.

关键词： reservoir Eastern sandstone

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Physico.hemical co.ditions of the Formation of Beryl and Aquamarine in Mufushan Granopegmatite Deposit, Hunan province,China

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Chinese Journal Of Geochemistry 1994年第4期13卷 326-339页

作者：李兆麟毛艳华雷丽宏丘志力牛贺才 Department of geology Zhongshan University Guangzhou Institute of New Techniques for geology Academia Sinica Guangzhou

The formation of the Mufushan granopegmahte was closey related to the Late Yenshanianmultiphase and multistage magmatic activities. More than one generation of beryl and aquamarineoccur in different types of pegmatite in the granitcs’ The presence of melt and melt-fluid inclusionsstrongly indhates a melt-solution character of the pegmatitic magma. Forming temperatures of the different generations of beryl in a Na +- K + -Ca2 + -co.- -Cl- S4 - solution ranges fr0m 990℃ to200℃ touamarine was formed at 720- 180℃ The co.tents of alkali metals (Na+ + K+ ) in theore-formming solution of aquamarine are lower than those in the bery, but the co.tents of alkaliearths （Ca) and salinity are higher. The granite was generated by remlting of the basement formation (meta-sedimentary rocks of the Lengiiaki group) which also served as the souree of ore-formingmaterial. Beryllium in the pegtnatite was transpbrted tnainly in the form of Na2[Be(co.)2], withpart of it being co.plexed with Cl- and SO4 During the generation and evolution of thepegmatite, equilibrium might have been reached in the solid-melt-fluid or solid-fluid system. Theintergranular solutions may have reacted with the early crystallized minerals resulting in pot-ash-feldspartiation, albitization and musco.itisation during which the ore-forming elements were mobilized and transported in favour of ore deposition.

关键词：绿玉流体包裹体花斑岩矿床绿宝石物理化学云南成因

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Breaking the Fe_(3)O_(4)-wrapped co.per microstructure to enhance co.per-slag separation

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International Journal of minerals,Metallurgy and Materials 2024年第10期31卷 2312-2325页

作者： Xiaopeng Chi Haoyu Liu Jun Xia Hang Chen Xiangtao Yu Wei Weng Shuiping Zhong Zijin School of geology and Mining Fuzhou UniversityFuzhou 350108China Fujian Key Laboratory of Green Extraction and High-Value Utilization of New energy Metals Fuzhou UniversityFuzhou 350108China Zijin Mining group co. Ltd.Longyan 364200China co.laborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083China

The precipitation of Fe_(3)O_(4)particles and the acco.panied formation of Fe_(3)O_(4)-wrapped co.per structure are the main obstacles to co.per reco.ery from the molten slag during the pyrometallurgical smelting of co.per ***,the co.mercial powdery pyrite or anthracite is replaced with pyrite-anthracite pellets as the reductants to remove a large amount of Fe_(3)O_(4)particles in the molten slag,resulting in a deep fracture in the Fe_(3)O_(4)-wrapped co.per microstructure and the full exposure of the co.per matte *** 1wt%co.posite pellet is used as the reductant,the co.per matte droplets are enlarged greatly from 25μm to a size observable by the naked eye,with the co.per co.tent being enriched remarkably from 1.2wt%to 4.5wt%.Density functional theory calculation results imply that the formation of the Fe_(3)O_(4)-wrapped co.per structure is due to the preferential adhesion of Cu_(2)S on the Fe_(3)O_(4)particles.X-ray photoelectron spectrosco.y,Fourier transform infrared spectrometer(FTIR),and Raman spectrosco.y results all reveal that the high-efficiency co.ver-sion of Fe_(3)O_(4)to FeO can decrease the volume fraction of the solid phase and promote the depolymerization of silicate network *** a co.sequence,the settling of co.per matte droplets is enhanced due to the lowered slag visco.ity,co.tributing to the high efficiency of co.per-slag separation for co.per *** results provide new insights into the enhanced in-situ enrichment of co.per from mol-ten slag.

关键词： pyrometallurgical smelting process slag cleaning reductants co.per matte

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Direct reduction swelling behavior of pellets in hydrogen-based shaft furnaces under typical atmospheres

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International Journal of minerals,Metallurgy and Materials 2022年第10期29卷 1891-1900页

作者： Zichuan Zhao Jue Tang Mansheng Chu Xindong Wang Aijun Zheng Xiaoai Wang Yang Li School of Metallurgy Northeastern UniversityShenyang 110819China Institute for Frontier Technologies of Low-carbon Steelmaking Northeastern UniversityShenyang 110819China liaoning province Engineering Research Center for Technologies of Low-Carbon Steelmaking Northeastern UniversityShenyang 110819China State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China co.lege of Materials Science and Engineering Chongqing UniversityChongqing 400044China HBIS group co. LtdShijiazhuang 050000China Xuanhua Iron and Steel group co. LtdShijiazhuang 075100China Iron and Steel Research Institute of HBIS group co. LtdShijiazhuang 050000China

Hydrogen-based shaft furnace process is gaining more and more attention due to its low carbon emission, and the reduction behavior of iron bearing burdens significantly affects its operation. In this work, the effects of reduction degree, temperature, and atmosphere on the swelling behavior of pellet has been studied thoroughly under typical hydrogen metallurgy co.ditions. The results show that the pellets swelled rapidly in the early reduction stage, then reached a maximum reduction swelling index (RSI) at approximately 40%reduction degree. The crystalline transformation of the iron oxides during the reduction process was the main reason of pellets swelling. The RSI increased significantly with increasing temperature in the range of 850-1050℃, the maximum RSI increased from 6.66%to 25.0%in the gas co.position of 100%H_(2). With the temperature increased, the pellets suffered more thermal stress resulting in an increase of the volume. The maximum RSI decreased from 19.78%to 17.35%with the volume proportion of H_(2) in the atmosphere increased from 55%to 100%at the temperature of 950℃.The metallic iron tended to precipitate in a lamellar structure rather than whiskers. co.sequently, the inside of the pellets became regular, so the RSI decreased. Overall, co.trolling a reasonable temperature and increasing the H_(2) proportion is an effective way to decrease the RSI of pellets.

关键词： hydrogen metallurgy gas-based shaft furnace swelling crystalline transformation iron whisker hydrogen

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Analyses on uniformity of particles under HPGR finished grinding system

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Journal of Central South University 2018年第5期25卷 1003-1012页

作者：许鹏云胡聪甘敏李晶潘旭叶红齐 School of Chemistry and Chemical Engineering Central South University Hefei Cement Research and Design Institute Northwest Mining and geology group co. Ltd for Nonferrous Metals School of minerals Processing and Bioengineering Central South University Basic Teaching Department Nanchang Institute of Science and Technology

In order to deal with the disadvantages of excessive grinding and non-uniformity in finished particle under high-pressure grinding rolls （HPGR） finished grinding system, four aspects were investigated, including evaluating indicators, effects of operating factors, effect of particle uniformity on the flotation and formation mechanism of particle uniformity. Experiment of HPGR finished grinding system, cationic reverse flotation experiment and simulation test of particle bed co.minution under the co.dition of quasi-static were carried out. Theoretical analyses indicated that both of uniformity co.fficient and average particle size should be included in the uniformity analysis of the mineral particles. The results show that the effect of circulation fan impeller speed on particle uniformity is the most evident, HPGR working pressure and roll gap are seco.d and HPGR roller speed is the last. Average particle size has a more obvious effect on the grade of flotation co.centrate while uniformity co.fficient has a more obvious effect on the flotation reco.ery. co.sidering the two aspects of grade and reco.ery, the optimal uniformity co.fficient for flotation is 1.1-1.2 and the optimal average particle size for flotation is 50-55 μm. The operating factors which promote the shielding effect and co.pact effect in the HPGR finished grinding system should be strengthened based on the uniformity of particles.

关键词： high-pressure grinding rolls particle uniformity uniformity co.fficient average particle size flotation shielding effect co.pact effect

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