【摘要】：鈮元素是我國諸多行業(yè)的戰(zhàn)略性元素,但目前鈮元素過分依賴進口,究其主要原因是國內的鈮礦品位過低,批量開采經濟效益低下,同時化學分選對環(huán)境造成了嚴重的不可逆破壞。為了從源頭提高鈮礦的品位,設計了一種全新的X射線熒光信號處理方法,從而更加適用于快速地識別礦石中的鈮元素含量,單塊配制樣品在0.05~0.5 s的時間內即可檢測出鈮元素的含量。并且解決了傳統熒光儀利用模擬系統進行信號處理,而過分依賴電阻與電容導致的穩(wěn)定性,可重復性差、吞吐量低、彈道虧損嚴重、基線偏移較大等問題。提出一種運用全數字化方式進行信號處理的思路,將熒光探測器發(fā)出的信號首先進行數字化,保證信號的完整性,通過對數字信號進行濾波、微分與量化等處理,可以得到準確的譜線信號。通過對成分及含量已知的樣品進行測試,證明結果準確,各項指標得到優(yōu)化。
[Abstract]:Niobium is a strategic element in many industries in China, but at present, niobium is too dependent on imports, which is mainly due to the low grade of niobium ore in China and the low economic benefit of batch mining. At the same time, chemical sorting has caused serious irreversible damage to the environment. In order to improve the grade of niobium ore from the source, a new method of X-ray fluorescence signal processing is designed, which is more suitable for quickly identifying the content of niobium in ore. The content of niobium can be detected in the time of 0. 05 ~ 0. 5 s. The problems such as poor repeatability, low throughput, serious trajectory deficit and large baseline deviation caused by over-reliance on resistance and capacitance are solved. In this paper, a new method of signal processing is presented, in which the signal sent by the fluorescence detector is digitized first to ensure the integrity of the signal, and the digital signal is processed by filtering, differentiating and quantizing, etc. Accurate line signals can be obtained. By testing the samples with known components and contents, it is proved that the results are accurate and the indexes are optimized.
【作者單位】： 內蒙古科技大學信息工程學院;內蒙古白云鄂博礦多金屬資源綜合利用重點實驗室;
【基金】：內蒙古地區(qū)特別重大自然科學技術基金(41402060901)
【分類號】：O434.19;TD865
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本文編號：2324690