發(fā)布時(shí)間：2018-02-10 02:04

  本文關(guān)鍵詞： 川西磷礦 稀土元素 賦存狀態(tài) 磷塊巖 獨(dú)居石　出處：《成都理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：元素賦存狀態(tài)的研究是礦床物質(zhì)組成研究的重要內(nèi)容之一,它對于研究元素遷移規(guī)律、礦物和礦床形成條件以及對礦床的工業(yè)評價(jià)、礦石選冶工藝指標(biāo)及流程的擬定皆有重大的理論和實(shí)際意義,特別是稀土元素的賦存狀態(tài)研究更具有重要價(jià)值。這是因?yàn)橄⊥猎赝鶎Φ刭|(zhì)作用中元素遷移成礦過程的物理化學(xué)條件特別敏感,能較理想地指示礦物、礦床的形成等一系列地球化學(xué)問題。同時(shí),由于它們在工業(yè)應(yīng)用和國民經(jīng)濟(jì)中所占有的特殊地位,因而在礦床評價(jià)和礦石綜合利用方面成為不可缺少,甚至是舉足輕重的因素。中國是當(dāng)今世界最大磷肥生產(chǎn)國,亦是第一大磷石膏副產(chǎn)國,在磷礦的開采或磷肥的生產(chǎn)過程中往往忽略了磷礦石中稀土元素的存在,造成了極大了資源浪費(fèi)。磷是四川省優(yōu)勢礦產(chǎn)之一,目前在四川省已發(fā)現(xiàn)大中型礦產(chǎn)地有60余處,其中大型12處、中型2處、小型20處,已探明的的資源儲量達(dá)18億噸。礦產(chǎn)潛力評價(jià)圈出了5個(gè)預(yù)測工作區(qū),預(yù)測磷礦資源潛力48.3億噸,主要分布在綿竹、馬邊、雷波等地區(qū)。本文選取川西地區(qū)的雷波莫紅磷礦區(qū)、馬邊暴風(fēng)坪磷礦區(qū)、綿竹王家坪磷礦區(qū)、什邡馬槽灘磷礦區(qū)和綿竹清平龍王廟磷礦區(qū)5個(gè)典型磷礦區(qū)的磷礦石作為研究對象,利用等離子質(zhì)譜儀ICP-MS、掃描電鏡配合能譜分析、電子探針分析方法,研究了川西這個(gè)5個(gè)典型磷礦區(qū)中磷礦石的稀土含量變化,并與貴州織金含稀土磷礦床進(jìn)行了對比。結(jié)果表明,雷波莫紅磷礦區(qū)、馬邊暴風(fēng)坪磷礦區(qū)、綿竹王家坪磷礦區(qū)、什邡馬槽灘磷礦區(qū)的磷礦石稀土含量均難以達(dá)到工來開采品位,而綿竹清平龍王廟磷礦區(qū)的磷礦石稀土含量為貴州織金含稀土磷礦床的2倍多,并且該礦區(qū)的稀土元素是獨(dú)立礦物獨(dú)居石的形式賦存在磷礦石中。我國磷資源雖然豐富,但中、低品位磷礦約占資源總量的92%,磷礦資源的綜合利用只有通過中、低品位磷礦的富集才能實(shí)現(xiàn)。稀土是重要的戰(zhàn)略性資源之一,是高技術(shù)重要資源支撐,也是我國的優(yōu)勢礦產(chǎn)之一。作為世界稀土資源和磷礦資源的大國,保護(hù)資源、提高資源利用率的任務(wù)十分艱巨。因此,本文還研究了國內(nèi)外有關(guān)從磷礦石中提取稀土元素的方法,希望能夠?yàn)榈推肺坏牧椎V開采和綜合利用的研究提供一定的幫助。
[Abstract]:The study of the occurrence state of elements is one of the important contents in the study of ore deposit material composition. It can be used to study the law of element migration, the formation conditions of minerals and deposits, and the industrial evaluation of ore deposits. It is of great theoretical and practical significance to draw up the technical index and process of ore processing and metallurgy. In particular, the study of the occurrence state of rare earth elements is of great value, because rare earth elements are often very sensitive to the physical and chemical conditions of their migration and mineralization in geological processes and can indicate minerals more ideally. A series of geochemical problems such as the formation of ore deposits. At the same time, because of their special status in industrial application and national economy, they are indispensable in ore deposit evaluation and ore comprehensive utilization. China is now the world's largest producer of phosphate fertilizer and the largest phosphogypsum by-product country. It often ignores the presence of rare earth elements in phosphate ore or in the process of phosphate fertilizer production. Phosphorus is one of the dominant minerals in Sichuan Province. At present, there are more than 60 large and medium-sized mineral sites in Sichuan Province, of which 12 are large, 2 are medium and 20 are small. The proven reserves of resources amount to 1.8 billion tons. Five prediction workspaces have been set up for mineral potential evaluation, and 4.83 billion tons of predicted phosphate resources have been predicted, mainly distributed in Mianzhu, Mabian, Leibo, etc. In this paper, the Redphosphorus mine area of Leibomo in western Sichuan is selected. The phosphate rock of five typical phosphate rock areas in Mabian Xuefengping Phosphate Mine area, Mianzhu Wangjiaping Phosphate Mine area, Shifang Machoutan Phosphate Mine area and Mianzhu Qingping Longwangmiao Phosphate Mine area were used as research objects. Plasma mass spectrometer (ICP-MS) and scanning electron microscopy (SEM) were used for energy dispersive analysis. The change of rare earth content of phosphate rock in five typical phosphate rock areas in western Sichuan was studied by using electron probe analysis method, and compared with that of Zhijin rare earth containing phosphate deposit in Guizhou. The results show that the opomo red phosphorus mining area, the Mabian Xuefengping phosphate ore area, The rare earth content of phosphate rock in Wangjiaping phosphate rock area, Shifang City is difficult to reach the grade of mining, but the rare earth content of phosphate rock in Qingping Longwangmiao phosphate ore area in Mianzhu Qingping is more than twice as high as that in Zhijin rare earth phosphate deposit in Guizhou. And the rare earth elements in this mine are the form of independent mineral monazite, which occurs in phosphate rock. Although China is rich in phosphorus resources, the low grade phosphate rock accounts for about 922% of the total resources, and the comprehensive utilization of phosphate rock resources can only be passed through. Rare earth is one of the important strategic resources, is the support of high-tech important resources, is also one of the superior minerals in China. As a large country of rare earth resources and phosphate rock resources in the world, protect resources, Therefore, this paper also studies the methods of extracting rare earth elements from phosphate rock at home and abroad, hoping to provide some help for the study of low grade phosphate rock mining and comprehensive utilization.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P619.213

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 金會心;王華;李軍旗;;磷礦資源及從磷礦中提取稀土的研究現(xiàn)狀[J];濕法冶金;2007年04期

，

本文編號：1499400