GB/T 17415.2-1998 in English
SUPERSEDEDMethods for chemical analysis of Tantalum and Niobium ores-Determination of Niobium content-Preconcentration and separation with silica gel-Thiocyanate extraction photometric method
- Issued on:1998-06-17
- Implemented on:1999-01-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$175.00
《GB/T 17415.2-1998钽矿石、铌矿石化学分析方法 硅胶富集分离-硫氰酸盐萃取光度法测定铌量》由TC93(全国自然资源与国土空间规划标准化技术委员会)归口,主管部门为自然资源部(国土)。
本标准规定了担、妮矿石中妮含量的测定方法。
本标准适用于担、妮矿石.也适用于铿、铆、艳矿石中妮含量的测定。测定范围::10X10-51.0×10-2五氧化二铌。
Scope
This standard specifies the method for the determination of niobium content in tantalum and niobium ores. This standard applies to tantalum and niobium ores, and also applies to the determination of niobium content in lithium, rubidium and cesium ores. Measuring range: 10×10-6~1.0×10-2niobium pentoxide.

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