磷矿石化学成分分析标准物质研制

发布时间：2018-03-22 05:09

本文选题：磷矿石　切入点：标准物质　出处：《岩矿测试》2017年06期 　论文类型：期刊论文

【摘要】：磷矿的开发与综合利用不仅需要分析磷等主要元素,也需要准确地测定稀土元素和微量元素。分析测试过程需要含量适中、定值组分全的磷矿石标准物质进行质量监控,国内外现有的磷矿石标准物质无论是从定值指标还是含量梯度范围等方面均无法满足此需求。本文研制了4个不同类型磷矿石成分分析标准物质。样品采集自河北张家口钒山磷矿、贵州织金新华磷矿、云南昆阳磷矿、湖北神农架火炼坡磷矿4个典型矿区,其中张家口钒山磷矿和织金新华磷矿为含稀土的磷矿。检验结果表明样品的均匀性、稳定性良好;通过11家实验室协作定值,定值元素包括造岩主量元素、稀土元素和痕量元素共37项,其中3个组分为参考值,其余均给出标准值和不确定度。4个磷矿石标准物质形成了一个从边界品位、工业品位到磷精矿较为完整的含量系列,P_2O_5的含量分别为10.57%、18.91%、27.78%、39.40%,稀土元素总量分别为0.16%、0.11%、0.032%、0.0083%,可满足磷矿勘查、评价和综合利用开发中对标准物质的需求。
[Abstract]:The development and comprehensive utilization of phosphate rock need not only the analysis of major elements such as phosphorus, but also the accurate determination of rare earth elements and trace elements. The available standard materials of phosphate rock both at home and abroad can not meet this demand in terms of the fixed value index or the range of content gradient. In this paper, four different types of standard materials for phosphate rock composition analysis have been developed. The samples were collected from River. North Zhangjiakou Vanadium Mountain Phosphate Mine, Guizhou Zhijin Xinhua phosphate ore, Yunnan Kunyang phosphate ore, Hubei Shennongjia Huolianpo phosphate ore four typical mining areas, among which Zhangjiakou vanadium mountain phosphate rock and Zhijin Xinhua phosphate rock are rare earth bearing phosphate rock. The test results show that the sample is homogeneous and stable. Through the collaborative determination of values in 11 laboratories, the determined elements consist of 37 major rock-forming elements, rare earth elements and trace elements, three of which are reference values. The other four standard materials of phosphate rock formed a series of P _ 2O _ 5 ranging from boundary grade, industrial grade to phosphorus concentrate. The content of P _ 2O _ 5 was 10.57 and 18.91 ~ 27.7827.7839.40, respectively, and the total amount of rare earth elements was 0.160.110.032 ~ 0.00833.It can meet the requirements of phosphate exploration. Evaluate and comprehensively utilize the requirements for standard materials in development.
【作者单位】：中国地质调查局武汉地质调查中心;
【基金】：中国地质调查局矿评专项(12120113022200)
【分类号】：P575

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