【摘要】：隨著鈦工業(yè)的發(fā)展,品位較高的天然金紅石資源日趨枯竭,這就迫使人們開發(fā)利用儲量豐富的鈦鐵礦資源,對其進(jìn)行經(jīng)濟(jì)合理的利用已成為一項(xiàng)重要課題。采用某鐵尾礦為試驗(yàn)礦樣。首先通過對礦樣進(jìn)行工藝礦物學(xué)研究,然后經(jīng)過了兩段磨礦、兩段磁選對鐵尾礦中的鈦鐵礦進(jìn)行富集,最后通過浮選得到了合格的鈦精礦產(chǎn)品。結(jié)果表明:由于鐵尾礦中鈦的品位較低,只有通過階段磨礦—磁選、浮選的聯(lián)合流程才能得到合格產(chǎn)品。一段磨礦的細(xì)度為-0.074mm占60%,第二段磨礦細(xì)度為-0.074mm占85%,經(jīng)過兩次磁選,獲得品位合適的入浮原料,經(jīng)過一次粗選、一次掃選、三次精選、中礦循序返回的閉路流程,用硫酸調(diào)節(jié)p H值,氟硅酸鈉作為抑制劑,MOH-2和柴油作為捕收劑,可以獲得產(chǎn)率為5.53%,鈦品位為47.15%,回收率為53.43%的合格鈦精礦。通過吸附量測定和紅外光譜分析,研究了捕收劑MOH-2和礦物的作用規(guī)律。結(jié)果表明:鈦鐵礦與捕收劑作用前后的紅外光譜明顯不同,出現(xiàn)了新的吸收峰,由此可以確定,捕收劑MOH-2在鈦鐵礦表面發(fā)生了化學(xué)吸附。
[Abstract]:With the development of titanium industry, the natural rutile resources with high grade have been exhausted day by day, which has forced people to develop and utilize the abundant ilmenite resources, and it has become an important subject to utilize them economically and reasonably. A certain iron tailings are used as test samples. The process mineralogy of the ore sample was studied at first, and then the ilmenite in the iron tailings was enriched by two-stage magnetic separation, and the qualified titanium concentrate product was obtained by floatation. The results show that due to the low grade of titanium in iron tailings, qualified products can be obtained only through the combined process of stage grinding and magnetic separation. The fineness of the first stage of grinding is-0.074mm, the second stage of grinding is-0.074mm, the fineness of the second stage is-0.074mm, after two magnetic separations, the appropriate grade of floating raw materials is obtained, after one rough, one sweep, three times of cleaning, In the closed circuit process of sequential return of ore, pH value is adjusted by sulfuric acid, sodium fluorosilicate is used as inhibitor, MOH-2 and diesel oil are used as collector, the yield is 5.53 and titanium grade is 47.15. The recovery rate is 53.43%. The action of collector MOH-2 and minerals was studied by means of adsorption and infrared spectrum analysis. The results show that the infrared spectra of ilmenite and collector are obviously different before and after the interaction, and a new absorption peak appears. It can be concluded that the collector MOH-2 is chemically adsorbed on the surface of ilmenite.
【學(xué)位授予單位】：華北理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD926.4

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本文編號：2355313