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四川某高镁低品位磷矿浮选试验研究

非金属矿 2024年第4期47卷 60-64页

作者：李双龙王进明何林圳吴然董发勤西南科技大学环境与资源学院四川绵阳621010 固体废物处理与资源化教育部重点实验室四川绵阳621010 四川省非金属矿粉体改性与高值化利用技术工程实验室四川绵阳621010

针对四川某高镁低品位磷矿,采用反浮选试验进行提磷降镁研究。该矿MgO品位高达9.10%,P_(2)O_(5)品位仅为18.30%,主要含磷矿物为氟磷灰石、胶磷矿,脉石矿物主要为白云石和石英,矿物间嵌布粒度细。结果表明,经过条件试验选择硫酸作为磷矿... 详细信息

针对四川某高镁低品位磷矿,采用反浮选试验进行提磷降镁研究。该矿MgO品位高达9.10%,P_(2)O_(5)品位仅为18.30%,主要含磷矿物为氟磷灰石、胶磷矿,脉石矿物主要为白云石和石英,矿物间嵌布粒度细。结果表明,经过条件试验选择硫酸作为磷矿物抑制剂,硫酸粗选用量为22 kg/t,磨矿细度-0.074 mm质量分数占82.00%,捕收剂为自制羧酸类捕收剂L+H混合药剂,通过开路浮选试验确定“1粗2扫3精”浮选流程,经闭路浮选试验可使磷精矿中MgO品位降至1.07%,P_(2)O_(5)品位达到30.17%,P_(2)O_(5)回收率为78.67%,最终实现该高镁质低品位磷矿的资源化利用。

关键词：磷矿脱镁反浮选氟磷灰石白云石

Thermal performance and reduction kinetic analysis of cold-bonded pellets with CO and H2 mixtures

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International Journal of Minerals,Metallurgy and Materials 2018年第7期25卷 752-761页

作者： Rong-rong Wang Jian-liang Zhang H-ran Liu An-yang Zheng Zheng-jian Liu Xing-le Liu Zhan-guo Li School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China School of Chemical Engineering University of New South WalesSydneyAustralia

Cold-bonded pellets, to which a new type of inorganic binder was applied, were reduced by H2~CO mixtures with different HJCO molar ratios （1：0, 5：2, 1：1, 2：5, and 0：1） under various temperatures （1023, 1123, 1223, 1323, and 1423 K） in a daermogravimetric analysis appaxatus. The effects of gas composition, temperature, and binder ratio on the reduction process were studied, and the microstxucture of re- duced pellets was observed by scanning electron microscopy-energy-dispersive spectrometry （SEM-EDS）. The SEM-EDS images show that binder particles exist in pellets in two forms, and the form that binder particles completely surround ore.particles has a more.significant hin- der effect on the reduction. The reduction equilibrium constant, effective diffusion coefficient, and the reaction rate constant were calculated on the basis of the unreacted core.model, and the promotion effect of temperature on reduction was further analyzed. The results show that no sintering phenomenon occurred at low temperatures and that the increasing reaction rate constant and high gas diffusion coefficient could main- tain the promotion effect of temperature; however, when the sintering phenomenon occurs at high temperatures, gas diffusion is hindered and the promotion effect is diminished. The contribution of the overaJl equilibrium constant to the promotion effect depends on the gas composition.

关键词： cold-bonded pellets inorganic binder reduction fraction reduction kinetic model sintering phenomenon

Genesis of the Changba–Lijiagou Giant Pb-Zn Deposit, West Qinling, Central China: Constraints from S-Pb-C-O isotopes

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Acta Geologica Sinica(English Edition) 2020年第4期94卷 884-900页

作者： WEI ran WANG Yitian MAO Jingwen HU Qiaoqing QIN Siting LIU Shengyou YE Dejin YUAN Qunhu DOU Ping School of Earth Science and Resources Chang'an UniversityXi'an 710064China MNR Key Laboratory of Metallogeny and Mineral Resource Assessment Institute of Mineral ResourcesChina Academy of Geological SciencesBeijing 100037China Geological Survey of Gansu Province Lanzhou 730030China Changba Pb-Zn Mine of Baiyin Nonferrous Metals Company ChengxianGansu 742500China

The extensive Changba-Lijiagou Pb-Zn deposit is located in the north of the Xihe–Chengxian ore.cluster in West Qinling. The ore.bodies are mainly hosted in the marble, dolomitic marble and biotite-calcite-quartz schist of the Middle Devonian Anjiacha Formation, and are structurally controlled by the fault and anticline. The ore.forming process can be divided into three main stages, based on field geological features and mineral assemblages. The mineral assemblages of hydrothermal stage I are pale-yellow coarse grain, low Fe sphalerite, pyrite with pits, barite and biotite. The mineral assemblages of hydrothermal stage II are black-brown cryptocrystalline, high Fe shalerite, pyrite without pits, marcasite or arsenopyrite replace the pyrite with pits, K-feldspar. The features of hydrothermal stage III are calcite-quartz-sulfide vein cutting the laminated, banded ore.body. Forty-two sulfur isotope analyses, twenty-five lead isotope analyses and nineteen carbon and oxygen isotope analyses were determined on sphalerite, pyrite, galena and calcite. The δ34 S values of stage I(20.3 to 29.0‰) are consistent with the δ34 S of sulfate(barite) in the stratum. Combined with geological feature, inclusion characteristics and EPMA data, we propose that TSR has played a key role in the formation of the sulfides in stage I. The δ34 S values of stage II sphalerite and pyrite(15.1 to 23.0‰) are between sulfides in the host rock, magmatic sulfur and the sulfate(barite) in the stratum. This result suggests that multiple S reservoirs were the sources for S2-in stage II. The δ34 S values of stage III(13.1 to 22‰) combined with the structure of the geological and mineral features suggest a magmatic hydrothermal origin of the mineralization. The lead isotope compositions of the sulfides have 206 Pb/204 Pb ranging from 17.9480 to 17.9782, 207 Pb/204 Pb ranging from 15.611 to 15.622, and 208 Pb/204 Pb ranging from 38.1368 to 38.1691 in the three ore.forming stages. The narrow and symmetric di

关键词： S-Pb isotopes C-O isotopes Pb-Zn deposit ore.genesis epigenetic hydrothermal Changba–Lijiagou West Qinling

Experimental study on the interaction between peat,lignite and germanium-bearing solution at low temperature

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Science China Earth Sciences 2005年第9期48卷 1411-1417页

作者： QI Huawen1,2, HU Ruizhong1 & QI Liang1 1. Key Laboratory of ore.Deposit Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 2. Department of Earth Science, Nanjing University, Nanjing 210093, China Key Laboratory of ore.Deposit Geochemistry Chinese Academy of Sciences Guiyang China Department of Earth Science Nanjing University Nanjing Chin

The interaction between peat, lignite and germanium(Ge)-bearing solution with an initial Ge concentration of 5 mg/L was studied at 25―100℃ and at pH 2.96―12.08. The results show that the apparent transfer ratios of peat and lignite for Ge in the solution were positively correlated with temperature in acid environment (initial pH=2.96), and the ratios (up to 86.5%) of lignite were obviously higher than those (up to 58.5%) of peat, but the organic transfer ratios of lignite were lower than those of peat. The activation energy values for interaction between peat, lignite and Ge-bearing solution are 30.96 and 15.67 kJmol?1, respectively. The strong acid (initial pH=2.96) and the strong alkaline (initial pH=12.08) environment contribute to the transfer of Ge in the solution. At 4ransfer of Ge into lignite. The interaction between peat, lignite and Ge-bearing solution are mainly attributable for the complexation of Ge with organic substrate. The experimental results from this study provide direct experimental evidence for the hydrothermal sedimentary genesis of abnormal enrichment of Ge in coal.

关键词： low temperature, peat, lignite, Ge4+, complexation.

Genotoxic properties of coagulant developed by using red mud and waste base as raw materials

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Genotoxic properties of coagulant developed by using red mud...

Real-time emergency route generating algorithm in tunnel

The 5～(th) Congress of Toxicology in Developing Countries

作者： Vinia ore.canin Ksenija Durgo Verica Garai-Vrhovac Jasna Franeki oli Analysis ＆ Control Tehnologies Faculty of Food Tehnology and Biotehnology Institute for Medical Research and Occupational Health Zagreb Croatia Faculty of Food Tehnology and Biotehnology

＜正＞ Water extracts the genotoxicity of the coagulant producedfrom red mud and waste base, and the waste mud remainingafter waste water treatment by this new product, were studied

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中国有色金属学会会刊：英文版 2011年第S3期21卷 637-641页

作者： FANG Yuan-min1, CHEN Jie1, AI Chun-long2, ZHANG Chun-liang2, ZHOU Shi-yong2, FU Xia-jiang2, GU De-mao2 1. Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China 2. Dahongshan Copper ore.Mine of Yuxi Mining Co. Ltd., Xinping 653405, China Faculty of Land Resource Engineering Kunming University of Science and Technology Kunming 650093 China Dahongshan Copper ore.Mine of Yuxi Mining Co. Ltd. Xinping 653405 China

As part of the digital mine system, a real time emergency route generating algorithm for a large scale metal mine is studied. The tunnel is abstracted and mathematically described by the center line model. A series of definitions are made and the center lines are regularized. In order to improve the quality of the final routes, a center line dataset preprocessing is done according to the factors including the slope threshold and the tunnel closed state information, etc. While in preprocessing, the mineshaft and shaft with the steep slope are excluded implicitly. The interface is preserved for point-like objects (e.g. blowers), directions (e.g. wind direction of blowers) and so on. The final path finding algorithm is optimized by the filter operation that the calculation is only performed at the endpoints and hub points, which can further reduce computing data amount. In our experiment, 3 368 nodes out of 22 401 nodes are selected as key nodes, therefore. the data processing amount of the algorithm is reduced to 1/7 and the routes can be found in real time. The algorithm is implemented and integrated into the final digital mine system.

关键词： digital mine tunnel path finding problem DIJKSTRA algorithm adjacency list

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康滇地轴东川式铜矿的层控条件与成矿作用

昆明工学院学报 1980年第2期 49-58页

作者：冉崇英昆明工学院矿床教研室

“东川式铜矿”早先指云南东川元古界昆阳群落雪白云岩中的层状铜矿。曾视为中温热液矿床。至今,矿床成因认识翻新。且发现:该式矿床分布广泛(北至四川通安,南达云南元江),成多层产出,产状多样。然而,它们总是赋存在昆阳群的一定岩相建... 详细信息

“东川式铜矿”早先指云南东川元古界昆阳群落雪白云岩中的层状铜矿。曾视为中温热液矿床。至今,矿床成因认识翻新。且发现:该式矿床分布广泛(北至四川通安,南达云南元江),成多层产出,产状多样。然而,它们总是赋存在昆阳群的一定岩相建造与地层层位中,可通称之为层控矿床。笔者试以其近年来对该式矿床的初步研究成果并参考有关资料来探讨矿床的层控条件与成矿作用问题。

关键词：康滇地轴铜矿床有色金属矿床层状铜矿白云岩层成矿作用地质作用东川云南层控

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煤和生物质化学链共气化特性研究

节能 2024年第6期43卷 87-90页

作者：吕玉林陈田田郁家耀吉然中国船舶重工集团公司第七○三研究所无锡分部江苏无锡214151

化学链气化是用于合成气生产的气化技术,通过氧气载体循环,减少了对纯氧和外界热量的需求。研究天然氧载体(铁矿石、硫酸渣、红泥)对褐煤和木屑化学链共气化特性的影响,结果表明,当褐煤和木屑掺混比7∶3、温度900℃、水蒸气流量400 mL/... 详细信息

化学链气化是用于合成气生产的气化技术,通过氧气载体循环,减少了对纯氧和外界热量的需求。研究天然氧载体(铁矿石、硫酸渣、红泥)对褐煤和木屑化学链共气化特性的影响,结果表明,当褐煤和木屑掺混比7∶3、温度900℃、水蒸气流量400 mL/min、O/C比为0.2时,褐煤和木屑化学链共气化达到最优气化工况,碳转化率为87.2%,气化效率为68.7%,说明天然载氧体对褐煤和木屑共气化反应具有较好的促进作用。

关键词：煤生物质化学链共气化天然载氧体

Genesis of the Sinongduo Carbonate-hosted Pb-Zn-Ag Deposit in the Central Lhasa Terrane,Tibet

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Acta Geologica Sinica(English Edition) 2023年第3期97卷 759-776页

作者： ran Fengqin TANG Juxing YANG Zongyao DUO Ji REN Dongxing GUO Wenbo WU Xin HAO Jinyue HE Yifei SUN Yang College of Earth Science Chengdu University of TechnologyChengdu 610059China MNR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological ScienceBeijing 100037China Chengdu Surveying Geotechnical Research Institute Co. Ltd.of MCCChengdu 610023China Chengdu Engineering Corporation Limited PowerChinaChengdu 611130China New Energy Geology Team of the Hebei Coalfield Geology Bureau XingtaiHebei 054000China

The Sinongduo mining region includes two types of mineralizations:the epithermal and the carbonate-hosted PbZn-Ag *** being studied for many years,the ore.formation process and genesis of the carbonate-hosted Pb-Zn-Ag deposits remain poorly *** Pb-Zn-Ag ore.bodies occur as veins and are hosted by limestone and dolostone of the Permian Xiala *** sulfide mineralization substages have been identified at the Sinongduo carbonatehosted *** coupled with Cu,Co and Sn was incorporated into sphalerite as substitutions:2Zn^(2+)?Cu^(+)+In^(3+),(3n/2+1)Zn^(2+)?Co^(2+)+n In^(3+)or(2n+1)Zn^(2+)?Co^(2+)+n(Cu^(+)+In^(3+))(n>1)and 4Zn^(2+)?Sn2++2In^(3+).Sphalerite and pyrite in the mineralization stage displayδ^(34)S values in a narrow range of+5.7‰to+11.3‰,which are similar to those of Palaeocene igneous rocks,indicative of a magmatic source of *** present systematic carbon-hydrogen-oxygen isotope results that further support a magmatic source for the ore.forming fluids that were influenced by meteoric ***,the Pb isotope compositions of sulfide minerals in the Sinongduo carbonate-hosted deposit overlap with the values of coeval Linzizong volcanic rocks and are similar to those of Indian Ocean sediments,indicating upper crustal sources of *** conclude that the Sinongduo carbonate-hosted Pb-Zn-Ag deposit is a medium-to low-temperature magmatic-hydrothermal deposit related to Linzizong magmatism.

关键词： sulfur and lead isotopes sphalerite carbonate-hosted deposit Tibet India–Asia collision