Distribution of Trace Elements in Fractions after Micronization and Density-Gradient Centrifugation of High-Ge Coals from the Wulantuga and Lincang Ge Ore Deposits in China
Distribution of Trace Elements in Fractions after Micronization and Density-Gradient Centrifugation of High-Ge Coals from the Wulantuga and Lincang Ge Ore Deposits in China
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DOI：
10.1021/acs.energyfuels.7b02118
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发表时间：
2017-10
期刊：
影响因子：
5.3
通讯作者：
Qiang Wei;S. M. Rimmer;S. Dai
中科院分区：
文献类型：
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作者：
Qiang Wei;S. M. Rimmer;S. Dai
中国的乌兰图卡（内蒙古）和临沧（云南省）锗矿床均被认为是世界级的煤质锗矿床。本文选择了两种基准煤（来自乌兰图加的 WLTG C6-2 和来自临沧的 LC S3-6），利用微粉化、密度梯度离心 (DGC) 和电感耦合等离子体质谱 (ICP-MS) 来表征密度分数（显微精矿）与微量元素之间的关联，特别是对于异常富集的微量元素 乌兰图加和/或临沧高Ge煤中的稀土元素（包括Ge、W、As、Sb、Be、U和Nb）以及稀土元素和钇（REY）被广泛认为具有不同程度的有机亲和力。 WLTG C6-2 的腐殖石和惰质石含量分别占 58.4% 和 40.7%，而 LC S3-6 以腐殖石为主（98.7%）。 HCl-HF 脱矿后，腐铝石/惰质石的峰密度较低，DGC 分布呈高斯分布，表明某些矿物仍然存在……
The Wulantuga (Inner Mongolia) and Lincang (Yunnan Province) germanium ore deposits in China are both considered world-class, coal-hosted Ge deposits. For this paper, two bench coals (WLTG C6-2 from Wulantuga and LC S3-6 from Lincang) were selected to characterize the associations between density fractions (maceral concentrates) and trace elements using micronization, density-gradient centrifugation (DGC), and inductively coupled plasma mass spectrometry (ICP-MS), especially for the abnormally enriched trace elements (including Ge, W, As, Sb, Be, U, and Nb) and rare earth elements and yttrium (REY) in the Wulantuga and/or Lincang high-Ge coals that are widely considered to have varying degrees of organic affinity. Huminite and inertinite contents of WLTG C6-2 account for 58.4% and 40.7%, respectively, whereas LC S3-6 is dominated by huminite (98.7%). Lower peak densities for huminite/inertinite and Gaussian distributions of DGC profiles after HCl-HF demineralization suggest that some minerals still exist ...