| 基于BIF条带状铁建造矿化特征的国际铁矿石盈亏平衡运营成本定量研究 |
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| 引用本文： | 王崴平,陈毓川.基于BIF条带状铁建造矿化特征的国际铁矿石盈亏平衡运营成本定量研究[J].岩矿测试,2017,36(2):187-195. |
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| 作者姓名： | 王崴平 陈毓川 |
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| 作者单位： | 江西省地质调查研究院, 江西 南昌 330030,南昌大学分析测试中心, 江西 南昌 330047,江西省地质调查研究院, 江西 南昌 330030,南昌大学分析测试中心, 江西 南昌 330047 |
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| 基金项目： | 江西省重点研发计划项目（20161BBG70063） |
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| 摘 要： | 国内外铁矿石价格对标基准多采用离岸价或到岸价,而非盈亏平衡运营成本,难以揭示我国铁矿石所面对的真实市场承压价格。为了厘清国际一线生产商的铁矿石盈亏平衡运营成本价格,本文对世界上最重要的条带状铁建造(BIF)矿产地——西澳哈默斯利盆地高品位赤铁矿矿床的矿化特征及代表性铁矿石产品展开系统研究,同时引入巴西铁四角地区的铁英岩型赤铁矿矿石作为对照,分析全球典型高品位赤铁矿矿石经济指标。结合前人研究成果,将西澳哈默斯利盆地与BIF相关的高品位赤铁矿的富集矿化类型划分为假象赤铁矿-针铁矿、微板状赤铁矿与河道沉积型赤铁矿,巴西铁四角主要为铁英岩型赤铁矿。上述各矿化类型对应的铁矿石产品的铁元素含量均高于56%;在杂质元素含量上,假象赤铁矿-针铁矿的磷含量高,微板状赤铁矿的磷、硫含量较高,河道沉积型赤铁矿的磷、硫含量较低,铁英岩型赤铁矿含锰。经定量估算,西澳力拓、必和必拓、FMG和巴西淡水河谷的铁矿石盈亏平衡运营成本价格分别为34.66、36.76、47.35、38.07美元/干吨,可为中国海外权益铁矿项目开发提供运营成本的参考。
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| 关 键 词： | 有机锡化合物 高效液相色谱-串联质谱法 食用植物油 低温冷冻提取 分散固相萃取 |
| 收稿时间： | 2016/2/29 0:00:00 |
| 修稿时间： | 2016/12/27 0:00:00 |
Quantitative Research for Global Iron Ore Breakeven Operating Cost Based on BIF-type Enriched Mineralization Characteristics |
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| WANG Wei-ping and CHEN Yu-chuan.Quantitative Research for Global Iron Ore Breakeven Operating Cost Based on BIF-type Enriched Mineralization Characteristics[J].Rock and Mineral Analysis,2017,36(2):187-195. |
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| Authors: | WANG Wei-ping and CHEN Yu-chuan |
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| Institution: | Jiangxi Institute of Geological Survey, Nanchang 330030, China,Center of Analysis and Testing, Nanchang University, Nanchang 330047, China,Jiangxi Institute of Geological Survey, Nanchang 330030, China and Center of Analysis and Testing, Nanchang University, Nanchang 330047, China |
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| Abstract: | Most organotin compounds which have been widely used in food packaging materials and production process show serious toxicity effects to human health. Especially a high content of fat brought large matrix interference to the analysis and detection of edible vegetable oil. In this paper, methanol was selected as the extraction solvent, and the edible vegetable oil in low temperature was easy to be solidified. A simple and low-cost method based on high performance liquid chromatography-tandem mass spectrometry for the simultaneous determination of four organotins in edible vegetable oil samples was developed. Four organotins including dibutyltin dichloride, tributyltin chloride, diphenyltin dichloride and triphenyltin chloride were simultaneously extracted with methanol using the low-temperature precipitation process. After being concentrated, the extracts were purified by matrix solid-phase dispersion using graphitized carbon black. In this paper, ethanol, methanol, and acetonitrile were investigated to extract organotins from edible vegetable oil samples. The recoveries of the four organotins extracted by LLE and freezing extraction were also compared. The proposed method was close to or better than the current national standard and related research. The adsorption abilities of some materials including primary secondary amine, alumina N, florisil, and graphitized carbon black were also studied. In order to evaluate the accuracy of the new method, the recovery was investigated. The ranges in the recoveries for the four organotins present at three levels were ranged from 74.2% to 99.5%. Our present work was better than or comparable to those of national standards and the reported methods. The results showed that the sample preparation method enabled the simultaneous determination of the four organotins in peanut oil, soybean oil,corn oil, rap oil and edible blended oil samples. |
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| Keywords: | organotins compounds High Performance Liquid Chromatography-Tandem Mass Spectrometry edible vegetable oils low-temperature precipitation procedure dispersive-solid phase extraction |
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