本文選題：稀土元素 + 汪清油頁巖��； 參考：《中國稀土學(xué)報(bào)》2017年04期

【摘要】：利用逐級(jí)化學(xué)提取實(shí)驗(yàn)和電感耦合等離子質(zhì)譜(ICP-MS)相結(jié)合的方法,以吉林汪清羅子溝油頁巖為研究對(duì)象,對(duì)油頁巖原樣及半焦中的稀土元素含量、地球化學(xué)特性、分布模式及其賦存狀態(tài)進(jìn)行研究。結(jié)果表明,與中國煤相比,汪清油頁巖中稀土元素含量明顯富集,且輕稀土元素富集程度高于重稀土元素,輕重稀土元素分餾明顯。δCe_N為1.46,表現(xiàn)為明顯正異常,表明其成巖環(huán)境不受海水影響,稀土元素與陸源巖關(guān)系密切且來源一致。汪清油頁巖中稀土元素主要賦存在無機(jī)礦物質(zhì)中,有機(jī)質(zhì)中含量極少,硅鋁化合物結(jié)合態(tài)占大部分,不同提取態(tài)對(duì)油頁巖中稀土元素的分餾效應(yīng)影響不同。經(jīng)過干餾過程,油頁巖半焦中稀土元素含量變化不大,稀土元素有明顯富集趨勢(shì)。稀土元素在干餾過程中的遷移主要是由于穩(wěn)定態(tài)、硫化物結(jié)合態(tài)減少,碳酸鹽結(jié)合態(tài)增多,其中鐵錳氧化物結(jié)合態(tài)變化不明顯。
[Abstract]:By means of stepwise chemical extraction experiment and inductively coupled plasma mass spectrometry (ICP-MS) method, the contents and geochemical characteristics of rare earth elements in oil shale samples and semi-coke samples were studied by taking Luozigou oil shale in Wangqing County, Jilin Province, as an example. The distribution pattern and its occurrence state are studied. The results show that compared with Chinese coal, the content of rare earth elements in Wangqing oil shale is obviously enriched, and the enrichment degree of light rare earth elements is higher than that of heavy rare earth elements, and the fractionation of heavy rare earth elements is obvious. 未 Ce_N is 1.46, showing obvious positive anomaly. The results show that the diagenetic environment is not affected by sea water, and the REE is closely related to the continental source rock. The rare earth elements in Wangqing oil shale are mainly found in inorganic minerals, the content of organic matter is very small, and the combination of silicon and aluminum compounds is the majority. Different extraction states have different effects on the fractionation effect of rare earth elements in oil shale. The content of rare earth elements in oil shale semi-coke changed little and the enrichment trend of rare earth elements was obvious. The migration of rare earth elements during distillation is mainly due to the stable state, the decrease of sulphide binding state and the increase of carbonate bound state, in which the iron-manganese oxide binding state is not obvious.
【作者單位】： 東北電力大學(xué)油頁巖綜合利用教育部工程研究中心;
【基金】：吉林省重點(diǎn)科技公關(guān)項(xiàng)目(20140204004SF) 吉林省自然科學(xué)基金項(xiàng)目(201215163)資助
【分類號(hào)】：TE662.5

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本文編號(hào)：1846746