本文選題：鐵尾礦 + 細粒鈦鐵礦��； 參考：《昆明理工大學(xué)》2015年碩士論文

【摘要】：近十年來,攀鋼選鈦廠通過高效回收鈦鐵礦的工藝及裝備研究,取得了一定成就,提高了選鈦回收率。但總的來說,其選鈦工藝中存在著設(shè)備繁多、流程復(fù)雜、藥劑量大和成本高等問題,如何有效地提高資源利用率,能夠為攀鋼集團帶來經(jīng)濟效益�？疾炝伺输撨x鈦廠細粒級鈦精礦生產(chǎn)線,在二段高梯度磁選中通過一次掃選得到的尾礦直接排入了尾礦庫。這部分尾礦的鈦品位為6%左右,每天的排放量達900噸,其中可利用的鈦資源總量較高,直接進入尾礦庫造成了極大的資源浪費。本論文以攀鋼選鈦廠前八系列中,二段強磁選的掃選尾礦為研究對象,進行了研究,包括原子光譜分析、化學(xué)多元素分析、鈦礦物物相分析以及礦物粒度分析。工藝礦物學(xué)研究表明：原礦樣中鈦品位偏低,僅為5.21%。其中鈦礦物的分布相對集中,絕大部分賦存在鈦鐵礦中,其次是鈦磁鐵礦。鈦礦物粒度較細,分布不均勻,粗粒級的單體解離度偏低,-0.074mm-+0.019mm粒級的占42.18%。針對原礦樣的性質(zhì),進行了細致的鈦回收工藝研究,采用了磁選粗選拋尾,磁精礦經(jīng)磨礦后進入懸振錐面選礦機重選的工藝流程。研究內(nèi)容包括：磁選粗選探索試驗、磨礦細度試驗、工藝參數(shù)試驗以及精選次數(shù)試驗,精選次數(shù)試驗表明只需要二次精選即可獲得滿意的鈦精礦。當(dāng)設(shè)備工藝參數(shù)最佳時,通過懸振錐面選礦機二次精選得到的鈦精礦品位為42.37%,回收率為43.01%。最后,將鈦精礦浮選脫硫,所得硫精礦中S品位為23.52%,回收率達到89.80%；浮硫尾礦中0.16%的S品位說明脫硫有效。在前期開路試驗基礎(chǔ)上開展了閉路流程試驗,最終獲得品位44.23%,回收率45.85%的鈦精礦。
[Abstract]:In the past ten years, Panzhihua Iron and Steel Co., Ltd has achieved some achievements and improved the recovery rate of titanium through the research on the technology and equipment of high efficiency recovery of ilmenite in Panzhihua Iron and Steel Co. But in general, there are many problems in the titanium separation process, such as various equipment, complicated process, large amount of medicament and high cost. How to improve the utilization ratio of resources effectively can bring economic benefits to Panzhihua Iron and Steel Group. The fine grained titanium concentrate production line of Panzhihua Iron and Steel Co., Ltd was investigated. The tailings obtained by one sweep separation in the second stage of high gradient magnetic separation were discharged directly into the tailings reservoir. The titanium grade of this part of tailings is about 6%, and the daily discharge is 900 tons, among which the total amount of available titanium resources is relatively high, which has caused a great waste of resources by entering the tailings reservoir directly. In this paper, the scavenging tailings of the second stage high magnetic separation in the first eight series of titanium separation plant of Panzhihua Iron and Steel Co., Ltd were studied, including atomic spectrum analysis, chemical multielement analysis, titanium mineral phase analysis and mineral particle size analysis. The technological mineralogical study shows that the titanium grade in the raw ore sample is low, only 5.21. The distribution of titanium minerals is relatively concentrated, most of them occur in ilmenite, followed by ilmenite. The particle size of titanium mineral is fine and the distribution is uneven. The monomer dissociation degree of coarse grained grade is lower than 0.074 mm- 0.019mm particle level, and 42.18%. According to the properties of raw ore, a detailed titanium recovery process was studied, and the process of gravity separation of magnetic concentrate was adopted by rough separation and tail-dressing, and by grinding the magnetic concentrate into the suspended vibration cone concentrator. The research contents include: exploration test of magnetic separation, grinding fineness test, technological parameter test and cleaning times test. The cleaning times test shows that the satisfactory titanium concentrate can be obtained only by twice cleaning. When the process parameters of the equipment are the best, the titanium concentrate grade obtained by the secondary cleaning of the suspended vibration cone concentrator is 42.37 and the recovery rate is 43.01. Finally, the sulfur concentrate is desulphurized by flotation, the S grade of the concentrate is 23.522.The recovery rate is 89.80, and 0.16% S grade in the floating sulfur tailings shows that the desulphurization is effective. The closed circuit test was carried out on the basis of the open circuit test. Finally, the titanium concentrate with a grade of 44.23 and a recovery of 45.85% was obtained.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD926.4

【引證文獻】

相關(guān)會議論文 前1條

1 張裕書;周滿賡;丁亞卓;;密地、白馬釩鈦磁鐵礦不同碎礦產(chǎn)品特性及工藝礦物學(xué)研究[A];2010'中國礦業(yè)科技大會論文集[C];2010年

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本文編號：1878231