本文選題：鈮鉭多金屬礦 + 伴生元素��； 參考：《巖礦測(cè)試》2017年06期

【摘要】：稀有多金屬礦各類(lèi)選礦樣品中同一元素的含量相差較大,且同一樣品中各元素的含量也有較大差異,如鈮鉭鋰鈹在尾礦和原礦中的含量只有幾十至幾百!g/g,而在精礦中的含量達(dá)到百分之幾至百分之幾十,伴生元素如鉀、鈉在不同樣品中也有較大差異。應(yīng)用敞口酸熔-電感耦合等離子體發(fā)射光譜法(ICP-OES)測(cè)定鈮鉭鋰鈹?shù)仍赝ǔ２捎萌峄蛩乃岱纸鈽悠?多是測(cè)定尾礦、原礦及部分中礦樣品中較低含量的鈮鉭鋰鈹,且同一測(cè)定體系中只測(cè)定了一種或兩種元素。本文采用氫氟酸-硝酸-鹽酸-高氯酸-硫酸分解樣品,以3~4滴氫氟酸+5%硫酸+5%過(guò)氧化氫提取體系替代常規(guī)的有機(jī)酸(酒石酸等)提取體系,實(shí)現(xiàn)了應(yīng)用ICP-OES同時(shí)測(cè)定稀有金屬礦選礦試驗(yàn)各階段產(chǎn)品中不同含量的鈮鉭鋰鈹鉀鈉銣鐵鈦等元素。各元素的譜線強(qiáng)度在0~500μg/mL濃度范圍內(nèi)呈良好的線性關(guān)系,相對(duì)標(biāo)準(zhǔn)偏差為0.37%~4.77%(n=6)。該方法提高了選礦全流程樣品中各類(lèi)元素的分析效率,已在選冶試驗(yàn)流程樣品分析中得到了應(yīng)用。
[Abstract]:The content of the same element in all kinds of mineral processing samples of rare polymetallic ore is quite different, and the content of each element in the same sample is also quite different. For example, the content of niobium, tantalum, lithium beryllium and beryllium in tailings and raw ores is only tens to hundreds of g / g, while in concentrate, the content of niobium, tantalum, lithium-beryllium and beryllium is several to several percent. The associated elements such as potassium and sodium are also different in different samples. Determination of niobium, tantalum, lithium, beryllium and other elements by open acid melting-inductively coupled plasma emission spectrometry (ICP-OES) is usually carried out by triacid or tetracarboxylic acid decomposition, mostly by determination of lithium niobium, tantalum, beryllium, niobium, tantalum and beryllium in tailings, raw ores and some middle ore samples. Only one or two elements were determined in the same system. In this paper, hydrofluoric acid, nitric acid, hydrochloric acid, perchloric acid-sulfuric acid and sulfuric acid were used to decompose the sample, and 5% hydrofluoric acid 5% H 2O 2 extraction system was used to replace the conventional organic acid (tartaric acid, et al.) extraction system. The application of ICP-OES to the simultaneous determination of niobium, tantalum, lithium, beryllium, potassium, sodium, rubidium, iron and titanium and other elements in various stages of mineral processing of rare metal ores has been realized. The spectral line strength of each element is linear in the concentration range of 0 ~ 500 渭 g/mL, and the relative standard deviation is 0.37 ~ 4.77 ~ 6 ~ (-1). This method has improved the efficiency of analysis of all kinds of elements in the samples of the whole process of dressing, and has been applied in the sample analysis of the process of dressing and smelting.
【作者單位】： 河南省巖石礦物測(cè)試中心;河南省礦物加工與生物選礦工程技術(shù)研究中心;中國(guó)地質(zhì)大學(xué)(武漢)材料與化學(xué)工程學(xué)院;
【基金】：國(guó)土資源部公益性行業(yè)專(zhuān)項(xiàng)“鈮鉭選礦過(guò)程現(xiàn)代實(shí)驗(yàn)技術(shù)及標(biāo)準(zhǔn)物質(zhì)研制”(201411107-02)
【分類(lèi)號(hào)】：O657.3;TD9

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