1) niobium-tantalum
铌钽
1.
The niobium-tantalum and rare-earths ore deposits in China and their occurred minerals are described.
该文对我国铌钽稀土矿床及其产出的矿物进行了论述。
2.
The geochemistry of Niobium-Tantalum and Rare-Earths elements and crystal chemistry of their minerals are briefly described.
文章简述了铌钽稀土元素地球化学和矿物晶体化学,谈及中国产出的铌钽稀土矿物种类,论述了成矿地质时代和矿床成因类型,并对我国利用这类矿物的特色和可持续发展作出建议。
2) tantalum-niobium
钽铌
1.
Technology survey and development tendency investigation on tantalum-niobium hydrometallurgical extraction;
钽铌湿法冶金技术概况及发展趋势探讨
2.
The paper suggests that it is of great importance and necessity for the development and operation of tantalum-niobium resources enterprises to develop non-metal mineral product market,according to the particularity of tantalum-niobium resources and their fluctuating market.
针对钽铌资源的特殊性及市场经济条件下的起落不定,提出了拓展非矿产品市场在钽铌资源企业开发和经营理念中的异常重要性和必要性。
3.
Current situation including advantages and disadvantages of tantalum-niobium industry in china,and the influence of china's entry in to WTO on domestic tantalum-nibium industry are analyzed.
通过对我国钽铌工业现状及参与国际竞争的优势分析,加入WTO对于我国钽铌工业的主要影响,提出了我国钽铌工业的发展对策,旨在促成我国钽铌工业在激烈的国际竞争中得到长远发展。
3) tantalum and niobium
钽铌
1.
The enrichment and recovery of tantalum and niobium through acid leaching and sodium alkali fusing from tungsten residue is studied.
研究了用酸浸与钠碱熔融法从钨渣中富集和回收钽铌。
4) columbotantalite
铌钽矿产
1.
In the paper the long-range prediction of the pegmatite-type columbotantalite in FuTou-Xialiuyuan area of Northern Fujian is under discussion according to the characteristic analysis,model analysis,variant selection and the classification of association degree.
通过特征分析模型分析和变量选取及关联度分级,对闽北地区头—下柳源一带伟晶岩型铌钽矿产进行远景预测研究。
5) tantalum-niobium resource
钽铌资源
1.
In the article the characteristics,demand-supply condition and tendency of tantalum-niobium resource in China was analyzed,and the benefits,main developing methods,risks at different developing times during enterprises’participating and developing the tantalum-niobium resource abroad were discussed.
介绍了国外钽铌原料供应种类和特征,分析了我国钽铌资源的特点及近几年来供需状况,评述了我国企业积极开发境外钽铌资源的意义、方式及风险。
6) niobium-tantalum deposit
钽铌矿床
补充资料：铌钽铁铀矿
分子式：U4+Fe2+(Nb,Ta)2O8
CAS号：
性质：一种含铀和铌、钽的复杂氧化物。三方晶系。呈板状晶体。具放射性。硬度约5。相对密度约7。不透明。黑色。主要产于伟晶岩中，和钛铁矿、独居石等共生。可提炼稀土等。
CAS号：
性质：一种含铀和铌、钽的复杂氧化物。三方晶系。呈板状晶体。具放射性。硬度约5。相对密度约7。不透明。黑色。主要产于伟晶岩中，和钛铁矿、独居石等共生。可提炼稀土等。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条