|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Process mineralogy of Weishan rare earth ore by MLA显示文摘Mineral liberation analyser(MLA) was applied to quantitatively analyze the rare earth ore from Weishan in Shandong. Mineralogy parameters, such as mineral composition, occurrence states of rare earth elements(REEs) and valuable elements, mineral embedded grain size distribution, mineral association and liberation, are obtained. Results show that the contents of REEs and other valuable elements mainly contained in the ore were La 1.02 wt%, Ce 4.29 wt%, Pr 0.34 wt%, Nd 0.84 wt%, Sr 3.4 wt%and Ba 26.53 wt%, respectively. The REEs mainly occur in bastnaesite and carbocernaite in the form of independent mineral and the contents of bastnaesite and carbocernaite in the ore were 5.96 wt% and12.30 wt%, respectively. 67.34% of strontium occurs in carbocernaite and the rest occurs in celestobarite and strontianite mineral. 92.71% of barium occurs in barite. Liberation of main rare-earth minerals such as bastnaesite and carbocernaite is more than 80% when the grinding fineness is78.42% passing 74 μm. The research results could be employed to provide detailed basic theoretical data for further improvement of the beneficiation process flow and the processing index of rare earth ore, the recycling of other valuable minerals and the comprehensive utilization of tailings. | Caili Xu Chengbin Zhong Renliang Lyu Yaoyang Ruan Zhenyue Zhang Ru'an Chi | 2019 | Journal of Rare Earths2019，37，3： | 12 |
| 2 | Local concentration of middle and heavy rare earth elements in the col on the weathered crust elution-deposited rare earth ores显示文摘This present study focused on investigating the content and relative enrichment multiple of rare earth elements(REEs) in different terrain of weathered ore body, and the value of light rare earth elements/middle and heavy rare earth elements(LREEs/HREEs), in order to understand the mobilization and redistribution of HREEs, Furthermore, the abrasion pH was investigated as well, The results show that the average contents of HREEs in the knap, ridge and col are 37.26, 61.71, and 271.3 μg/g, respectively. The value of LREEs/HREEs is decreased from 16.78 to 7.914 between knap and col and the relative enrichment multiple of HREEs is as follows: C_(Col-HREEs) > C_(Ridge-HREEs) > 0. It is indicated the HREEs is concentrated in the col and the enrichment degree of HREEs is stronger than the ridge and the knap. Rare earth elements fractionation is exhibited in the different terrain of weathered ore body. Based on this study, the finding that HREEs concentrate in the lower terrain of weathered crust elution-deposited rare earth ores, such as in the col, would become a marker or indicator to search for middle and heavy rare earth enriched zone. | Zhenyue Zhang Ningjie Sun Zhengyan He Ru'an Chi | 2018 | Journal of Rare Earths2018，36，5： | 10 |
| 3 | Enhancing mineral liberation of a Canadian rare earth are with microwave pretreatment显示文摘Liberation. as an attribute of mineralogy characteristic. whose impacts on finely disseminated Canadian rare earth ore was studied with microwave pretreatment. Samples of a light rare earth ore along with mostly ankerite and biotite as dominant gangue minerals as well as bastnaesite, strontianite and goethite as dominated minerals were exposed to further comminution by ball mill and microwave pretreatment fragmentation. Mineralogical characteristics were analyzed by using a mineral liberation analyzer(MLA).The results indicated that tight association mutually penetrates among dominated minerals in the range size of -300 + 212 μm and 212 + 150 μm and gangue minerals in the form of adjacent type. fine vein type. shell type and packing type. Temperature in the ore samples pre-treated by microwave can rapidly rise to 250 ℃ with microwave power of 0-1.5 kW and microwave time of 0-2 min. Applying the microwave pretreatment merely reduces the hardness of the ore causing the fracture of rare earth ore, but this does not transform or change the original mineralogy characteristics of the ore samples. On the basis of above study. the liberation value of bastnaesite, strontianite and goethite with microwave pretreatment is greater than with conventional comminution when the liberation class is above 75%. The distribution of particle size of rare earth ore samples is better with microwave pretreatment than with conventional comminution for particle size of 7.4 × 10^(-5) m. With microwave pretreatment, the theoretical grade-recovery of bastnaesite. strontianite and goethite in the rare earth ore attains better results than with conventional comminution at a given grade. | Chengbin Zhong Caili Xu Renliang Lyu Zhenyue Zhang Xiaoyan Wu Ru'an Chi | 2018 | Journal of Rare Earths2018，36，2： | 10 |
| 4 | CHEMICAL BEHAVIOR OF CERIUM ELEMENT IN ROCK WEATHERING SYSTEM显示文摘1INTRODUCTIONTheelectronicstructureofgroundstateatomceriumisXe4f15d16s2,andtheelectronicstructureoftrivalentoxidizingstateisX... | Chi, Ru'an Zhu, Guocai Zhang, Ping Xu, Yinghui | 1999 | 中国有色金属学会会刊:英文版1999，9，1： | 10 |
| 5 | Partitioning properties of rare earth ores in China显示文摘The properties of rare earth partitioning in Chinese industrial rare earth ores were analyzed. Rare earth ores canbe divided into the single-mineral type ore with bastnaesite, the multi-mineral type ore with bastnaesite and monazite, andthe weathering crust type. Both the Bayan Obo rare earth ore and the Zhushan rare earth ore are a kind of mixed ore, con-sisting of bastnaesite and monazite. Their rare earth partitionings are strongly enriched in light rare earths, where CeO2 is50% and the light rare earth partitioning is totally over 95%. The Mianning rare earth ore as well as the Weishan rare earthis a kind of rare earth ore only having bastnaesite. Their rare earth partitionings are also strongly enriched in light rare earths,in which CeO2 is 47% and the light rare earth partitioning is totally over 94%. For the weathering crust type rare earth ore,there are the Longnan rare earth ore, the Xunwu rare earth ore, and the middle yttrium and rich europium ore. In the Long-nan rare earth ore, which is strongly enriched in heavy rare earths, Y2O3 is 64.83%, and the heavy and light rare earthpartitionings are 89.40% and 10.53%, respectively. In the Xunwu rare earth ore, which is strongly enriched in light rareearths, CeO2 is 47.16%, and the light rare earth partitioning is totally 93.25%. Y and Eu are enriched in the middle yttriumand rich europium ore. Its middle rare earth partitioning is totally over 10%, and Eu2O3 and Y2O3 are over 0.5% and 20%,respectively, which are mainly industrial resources of the middle and the heavy rare earths. | CHI Ru 'an LI Zhongjun PENG Cui ZHU Guocai XU Shengming | 2005 | Rare Metals2005，24，3： | 8 |
| 6 | Microwave assisted atmospheric acid leaching of nickel from laterite ore显示文摘The recovery of nickel from laterite ore with sulphuric acid under the effect of microwave irradiation was studied.The experimental results indicated that the extraction rate of nickel was influenced by reaction time,sulphuric acid concentration,and temperature,especially by microwave power.The results obtained from the experiments of orthogonal arrays showed that the optimum conditions of sulphuric acid concentration,reaction time,microwave power,and temperature were 25 vol.%,1.5 h,600 W,and 90°C,respectively.Under the optimal conditions,the nickel recovery could reach approximately 90.8%,which was higher than that obtained by conventional water bath heating.Kinetic experiments showed that the leaching of nickel in a sulphuric acid medium was controlled by chemical reaction occurring on the surface of laterite ore.The apparent activation energy was 38.9 kJ/mol.Microwave heating technology is efficient,clean,and easy to control and facilitate continuous processing of materials. | CHE Xiaokui SU Xiuzhu CHI Ru'an YU Junxia | 2010 | Rare Metals2010，29，3： | 7 |
| 7 | RECOVERING RE FROM LEACHING LIQUOR OF RARE EARTH ORE BY EXTRACTION显示文摘RECOVERINGREFROMLEACHINGLIQUOROFRAREEARTHOREBYEXTRACTIONChiRu'an;XuJingming;HePeijiong;ZhuYongjun(InstituteofNuclearEnergyTec... | Chi Ru’an Xu Jingming He Peijiong Zhu Yongjun(Institute of Nuclear Energy Technolegy,Tsinghua University,Beijing 100084) | 1995 | 中国有色金属学会会刊:英文版1995，5，4： | 4 |
| 8 | Synthesis of 1-[(O,O-diphenyl phosphonyl)arylmethyleneamino carbonylmethyl]uracils显示文摘A new series of compounds,1-[O,O-diphenyl phosphonyl)arylmethylene aminocarbo-nylmethyl]uracilsm,were synthesized in yield of 54.6-72.0% with DCC/BtOH as the couplingreagent,and their biological activities are being tested. | Xue Jun LIU Guo Chen CHI Ru Yu CHEN(Institute and National Key Laboratory of Elemento-Organic Chemistry, Nankai UniversityTianjin 300071) | 1999 | Chinese Chemical Letters1999，10，9： | 2 |
| 9 | Macrophage Migration Inhibitory Factor Is an Important Mediator in the Pathogenesis of Gastric Inflammation in Rats显示文摘 | Xiao Ru Huang Connie Wun Chun Hui Yong-Xiong Chen Benjamin Chun Yu Wong Peter C.W. Fung Christine Metz Chi Hin Cho Wai Mo Hui Richard Bucala Shiu-Kum Lam Hui Y. Lan | 2001 | Gastroenterology2001，，3： | 2 |
| 10 | Comparison of Three Microwave/Chemical Pretreatment Processes for Enzymatic Hydrolysis of Rice Straw显示文摘 | Shengdong Zhu Yuanxin Wu Ziniu Yu Cunwen Wang Faquan Yu Siwei Jin Yigang Ding Ru’an Chi Jintao Liao Yan Zhang | 2005 | Biosystems Engineering2005，，3： | 1 |
| 11 | Spectrotemporal modulation transfer functions and speech intelligibility显示文摘 | Chi T Gao Y Guyton M C Ru P Shamma S | | 0，，05： | 1 |
| 12 | Existing state and partitioning of rare earth on weathered ores 显示文摘 | Chi Ru' an Tian Jun Li Zhongjun | 2005 | Jour- nal of Rare Earths2005，06，75： | 1 |
| 13 | Kinetics on leaching rare earth from the weathered crust elution-deposited rare earth ores with ammonium sulfate solution显示文摘 | Tian Jun Yin Jingqun Chi Ru'an | 2010 | Hydrometallurgy2010，101，34： | 1 |
| 14 | Soloution- chemistry analysis of ammonium bicarbonate consump- tion in rare earth element precipitation显示文摘 | Chi Ru' an Xu Zhigao Zhu Guangcai | 2003 | Metallurgical and Materials Transactions2003，34，5： | 1 |
| 15 | A potential antitumor ellagitannin, davidiin, inhibited hepatocellular tumor growth by targeting EZH2显示文摘 | Yan Wang Jingyi Ma Sheung Ching Chow Chi Han Li Zhangang Xiao Ru Feng Jie Fu Yangchao Chen | 2014 | Tumor Biology2014，，1： | 1 |
| 16 | Molecular typing of Vibrio parahaemolyticus isolates, obtained from patients involved in food poisoning outbreaks in taiwan, by random amplified polymorphic DNA analysis显示文摘 | Hin - chung wong Chi - chang liu Tze - ruing pan | 1999 | J Clin Microbial1999，，： | 1 |
| 17 | Existing state and partitioning of rare earth ore on weathered ores 显示文摘 | Chi Ru' an Tian Jun Li Zhongjun | 2005 | Journal of rare earth2005，23，6： | 1 |
| 18 | Overview onLFG Projects in China显示文摘 | CHI Ze-zhi GONG Hu-juan JIANG Ru | 2010 | Waste Management2010，30，6： | 1 |
| 19 | Existing state and partitioning of rare earth on weathered ores显示文摘 | Chi Ru'an Tian Jun Li Zhongjun | 2005 | Journal of Rare Earths2005，23，75： | 1 |
| 20 | Kinetics on leaching rare earth from the weathered crust elution-deposited rare earth ores with ammonium sulfate solution显示文摘 | Tian Jun Yin Jingqun Chi Ru'an | 2010 | Hydrometallurgy2010，101，34： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员