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简介:XunwuRareEarthCorporationhasintroducedP507reductionextractionprocessfromAnhuiRe-searchInstituteofMetallurgytoprepareeuropiumoxideoffluorescentgradeinonestep.Theprocesshasbeenemployedinaproductionlineinthecorpo-ration.Andafterthreemonthsindustrialexperi-ment,allthetechnicalindexesreachedthedesigned
简介:TheSecondChinese-SovietSemi-naronChemistryandApplicationsofRareEarthswasheldinChangchunandShanghai,China,fromOct.4thto14th,1991.Nearly100scientistsandexpertsparticipatedinthemeetingand98paperswereintoconferenceproceedings.ThemeetingwasjointlychairedoverbyProf.NiJiazuanofChang-chunInstituteofAppliedChemistry.AcademiaSinica.and
简介:基于云驾岭煤矿瓦斯涌出量异常变化的现象,收集地质勘探和生产期间揭露的地质构造及瓦斯信息,运用瓦斯地质理论和煤层瓦斯赋存与流动理论,从煤层瓦斯生成、运移、储存的角度,研究岩浆岩侵入、煤层埋深和断层等地质因素对2号煤层煤质、生烃能力、煤层渗透性、瓦斯含量等参数以及煤层瓦斯赋存的影响,研究结果表明岩浆岩侵入是煤层瓦斯赋存的主要控制因素,断层和煤层埋深是煤层瓦斯赋存的一般影响因素。