本文關(guān)鍵詞： 常量元素 痕量元素 賦存狀態(tài) 環(huán)境意義　出處：《煤炭科學(xué)技術(shù)》2016年S1期 　論文類型：期刊論文

【摘要】：采用X射線熒光光譜法(XFS)、電感耦合等離子質(zhì)譜(ICP-MS)、X射線衍射法(XRD)、光學(xué)顯微鏡觀測(cè)和多元數(shù)理統(tǒng)計(jì)等方法測(cè)定和分析了大同煤田太原組5號(hào)煤層17個(gè)分層煤樣中8種常量元素和痕量元素Mn、Cu、As、Pb的含量分布和賦存特征。結(jié)果表明:5號(hào)煤常量元素Al、Si、K、Ti是構(gòu)成陸源碎屑物質(zhì)黏土礦物的主要部分,Fe、Ca分別以黃鐵礦和方解石的形式存在,Mg、P分別以碳酸鹽礦物和磷酸鹽礦物的形式存在;痕量元素Cu、Pb主要是賦存于黏土礦物晶格中,As、Mn元素主要賦存于黃鐵礦中。古地質(zhì)環(huán)境和海水入侵對(duì)Fe、Ca、As、Mn、Mg及P元素的后生作用明顯。煤中有害元素Mn、Cu、As和Pb主要賦存在礦物中,可以合理利用底灰,提高除塵率和通過(guò)煤炭分選技術(shù)來(lái)降低對(duì)環(huán)境的危害。
[Abstract]:Eight kinds of 17 stratified coal samples from No. 5 seam of Taiyuan formation in Datong coalfield were determined and analyzed by X-ray fluorescence spectrometry, inductively coupled plasma mass spectrometry (ICP-MS) X-ray diffraction, optical microscope observation and multivariate mathematical statistics. The content distribution and occurrence characteristics of constant element and trace element MnCU Cu As-Pb. The results show that the major element of No. 5 coal, Alo Si-K ~ (+) Ti, is the main part of the clay mineral of continental clastic material, and there exists MgP in the form of pyrite and calcite, respectively, in the form of pyrite and calcite, respectively, in the form of pyrite and calcite, respectively, in the form of pyrite and calcite, respectively. In the form of carbonate and phosphate minerals; The trace element Cu ~ (2 +) Pb is mainly located in the lattice of clay minerals, and the elements of asmonium mn are mainly located in pyrite. The paleogeological environment and seawater intrusion have obvious epigenetic effects on the elements of Fe _ (2) Ca ~ (2 +) as and P, and the harmful elements of mn ~ (2 +) Cu ~ (2 +) as and Pb in coal are mainly found in minerals. The bottom ash can be used reasonably, the dust removal rate can be increased and the environmental hazard can be reduced by coal separation technology.
【作者單位】： 太原理工大學(xué);煤與煤系氣地質(zhì)勘查山西省重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(41372164)
【分類號(hào)】：P618.11

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