本文選題：斑巖銅礦 + 工藝礦物學(xué)　； 參考：《昆明理工大學(xué)》2017年碩士論文

【摘要】：斑巖型銅礦床是銅和鉬金屬的主要來源,據(jù)統(tǒng)計,世界上約有75%的銅出自于斑巖型礦床中,本世紀以來我國已發(fā)現(xiàn)10余處大型斑巖型銅礦床中,便包含本論文的研究對象云南香格里拉銅礦。目前,斑巖銅礦中銅和鉬的回收一直面臨著藥劑選擇性差、精礦品位差、銅鉬分離困難等技術(shù)難題,其高效回收與利用是選礦研究的一大難點也同時是本論文的研究重點。論文通過工藝礦物學(xué)研究,查明礦石中主要礦物的共伴生關(guān)系以及嵌布粒度等特征,同時通過工藝流程與藥劑制度的對比研究,以尋找適合該礦石資源高效回收的技術(shù)路線。對試驗礦樣進行的工藝礦物學(xué)研究表明,礦石中銅含量為0.58%,主要銅礦物為黃銅礦,多數(shù)與長石、石英連生;礦石中鉬含量為0.015%,主要鉬礦物為輝鉬礦,總體嵌布粒度在0.025～0.1mm之間,利于回收。浮選試驗研究結(jié)果表明:銅鉬混浮試驗,采用C5460為捕收劑,F425為起泡劑,石灰為調(diào)整劑,通過一次粗選三次精選兩次掃選的開路試驗,獲得了銅品位29.64%,銅回收率69.17%,鉬品位0.795%,鉬回收率71.54%的混合精礦。銅鉬分離試驗中,采用煤油作為鉬的捕收劑,硫化鈉和D610混合抑制黃銅礦,水玻璃作為調(diào)整劑,通過一次粗選五次精選一次掃選的開路試驗,獲得了鉬品位48.91%,鉬作業(yè)回收率65.33%的鉬精礦以及銅品位29.11%,銅作業(yè)回收率87.82%的銅精礦。在以上開路試驗基礎(chǔ)上進行了全流程閉路試驗,獲得了產(chǎn)率為1.77%,銅品位28.63%,銅回收率87.54%的銅精礦和產(chǎn)率為0.02%,鉬品位45.03%,鉬回收率73.07%的鉬精礦。在小型試驗的流程結(jié)構(gòu)和藥劑制度的基礎(chǔ)上,進行了處理量為0.72t/d混合浮選閉路連續(xù)試驗,72h連續(xù)試驗獲得了產(chǎn)率1.68%,銅品位27.95%,銅回收率82.37%,鉬品位0.75%,鉬回收率84.14%,與實驗室小型試驗結(jié)果基本吻合。
[Abstract]:Porphyry copper deposits are the main sources of copper and molybdenum metals. According to statistics, about 75% of the copper deposits in the world come from porphyry deposits. More than 10 large porphyry copper deposits have been discovered in China since this century. The research object of this paper is Shangri-La Copper Mine in Yunnan Province. At present, the recovery of copper and molybdenum in porphyry copper mine has been faced with technical problems such as poor selectivity of reagent, poor grade of concentrate and difficulty in separation of copper and molybdenum. High efficiency recovery and utilization of copper and molybdenum in porphyry copper mine is a major difficulty in ore dressing research and is also the focus of this paper. Through the study of process mineralogy, this paper finds out the co-associated relation of the main minerals in the ore and the characteristics of the distribution granularity. At the same time, through the comparative study between the technological process and the pharmaceutical system, we seek a technical route suitable for the efficient recovery of the ore resources. The technological mineralogical study on the ore samples shows that the copper content in the ore is 0.58, the main copper ore is chalcopyrite, most of which are associated with feldspar and quartz, and the molybdenum content in the ore is 0.015%, the main molybdenum is molybdenum, and the overall distribution granularity is between 0.025~0.1mm. It is good for recycling. The results of flotation test show that C5460 is used as collector and C5460 as foaming agent and lime as adjuster, through the open-circuit test of three cleaning and two cleaning in one rough separation, the flotation test shows that: C5460 is used as collector and C5460 as foaming agent and lime as adjuster. The mixed concentrate with copper grade 29.64, copper recovery 69.17, molybdenum 0.79555 and molybdenum recovery 71.54% were obtained. In the copper-molybdenum separation test, kerosene was used as the collector of molybdenum, sodium sulfide and D610 were mixed to inhibit chalcopyrite, and water glass was used as the adjuster. The molybdenum concentrate with recovery rate of 65.33% and copper concentrate with copper grade 29.11 and copper recovery 87.82% with molybdenum grade 48.91% were obtained. On the basis of the open circuit test above, the closed circuit test of the whole process was carried out, and the copper concentrate with yield of 1.77, copper grade of 28.63, copper concentrate with recovery rate of 87.54%, molybdenum concentrate with yield of 0.02%, molybdenum grade of 45.03 and molybdenum concentrate with recovery rate of 73.07% were obtained. On the basis of the process structure and the pharmaceutical system of the small scale test, The yield was 1.68, the copper grade was 27.95, the copper recovery rate was 82.37, the molybdenum grade was 0.755,the molybdenum recovery rate was 84.14, and the results were in good agreement with the experimental results.
【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】：2017
【分類號】：TD95

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