【摘要】：鈮元素是我國(guó)諸多行業(yè)的戰(zhàn)略性元素,但目前鈮元素過分依賴進(jìn)口,究其主要原因是國(guó)內(nèi)的鈮礦品位過低,批量開采經(jīng)濟(jì)效益低下,同時(shí)化學(xué)分選對(duì)環(huán)境造成了嚴(yán)重的不可逆破壞。為了從源頭提高鈮礦的品位,設(shè)計(jì)了一種全新的X射線熒光信號(hào)處理方法,從而更加適用于快速地識(shí)別礦石中的鈮元素含量,單塊配制樣品在0.05~0.5 s的時(shí)間內(nèi)即可檢測(cè)出鈮元素的含量。并且解決了傳統(tǒng)熒光儀利用模擬系統(tǒng)進(jìn)行信號(hào)處理,而過分依賴電阻與電容導(dǎo)致的穩(wěn)定性,可重復(fù)性差、吞吐量低、彈道虧損嚴(yán)重、基線偏移較大等問題。提出一種運(yùn)用全數(shù)字化方式進(jìn)行信號(hào)處理的思路,將熒光探測(cè)器發(fā)出的信號(hào)首先進(jìn)行數(shù)字化,保證信號(hào)的完整性,通過對(duì)數(shù)字信號(hào)進(jìn)行濾波、微分與量化等處理,可以得到準(zhǔn)確的譜線信號(hào)。通過對(duì)成分及含量已知的樣品進(jìn)行測(cè)試,證明結(jié)果準(zhǔn)確,各項(xiàng)指標(biāo)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(nèi)蒙古科技大學(xué)信息工程學(xué)院;內(nèi)蒙古白云鄂博礦多金屬資源綜合利用重點(diǎn)實(shí)驗(yàn)室;
【基金】：內(nèi)蒙古地區(qū)特別重大自然科學(xué)技術(shù)基金(41402060901)
【分類號(hào)】：O434.19;TD865
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本文編號(hào)：2324690