發(fā)布時間：2018-06-07 15:45

  本文選題：混合銅礦 + 氧化銅礦��； 參考：《昆明理工大學(xué)》2017年碩士論文

【摘要】：銅作為一種重要的資源,在我國國民生產(chǎn)、經(jīng)濟建設(shè)中發(fā)揮著重要的作用。優(yōu)良的導(dǎo)電能力與卓越的延展性,使銅在電路元器件中得到廣泛應(yīng)用;除此以外,銅在建筑材料、機械設(shè)備、裝飾染料乃至生物醫(yī)藥上均得到大量應(yīng)用。據(jù)中國海關(guān)公布的最新數(shù)據(jù)顯示,2016年我國銅進口量達495萬噸,同比增長2.9%,可以看出,盡管我國經(jīng)濟在新形勢下逐步放緩,銅進口在國外市場上的仍然存在較大的依賴度。銅作為我國非常重要的戰(zhàn)略資源,盡管我國的銅礦選別技術(shù)已日趨成熟和完善,在新形勢下繼續(xù)開展對銅選別的研究依然顯得有重要。本篇論文以云南楚雄混合銅礦為主要研究對象,共收到來自銅選廠的三種實際礦石礦樣:低品位混合銅礦,中等品位氧化銅礦,混合銅礦。針對甲方提供的三種實際礦石分別展開了較為詳盡的工藝礦物學(xué)研究,以查明這三種銅礦石的基本性質(zhì)、礦物組成與嵌布狀態(tài)等。礦石的X射線衍射分析結(jié)果表明,這三種銅礦的氧化銅礦物以孔雀石、硅孔雀石為主;硫化銅礦物以黃銅礦、斑銅礦為主;脈石礦物為石英。低品位混合銅礦,含銅0.46%,氧化率14.78%,含3.91%的結(jié)合氧化銅,銅主要為硫化銅;中等品位氧化銅礦,含銅1.46%,氧化率32.87%,其中游離氧化銅占7.69%,結(jié)合氧化銅占23.08%;混合銅礦是將前兩種銅礦石按照1:1的比例混合而成,含銅0.95%,含71.53%硫化銅礦,結(jié)合氧化銅達18.41%。隨后對三種實際礦石展開了單因素條件實驗,經(jīng)磨礦細度測定,三種礦石磨礦細度均為-74μm含70%,著重考查較為合理的常規(guī)藥劑用量,最終確定的藥劑用量如下:低品位混合銅礦,硫化鈉200g/t,丁基黃藥125g/t,松醇油20 g/t;中等品位氧化銅礦,硫化鈉1000g/t,石灰1000g/t,丁基黃藥150g/t,松醇油30g/t;混合銅礦,硫化鈉750g/t,石灰500g/t,丁基黃藥150g/t,松醇油30g/t。低品位混合銅礦,原礦含Cu 0.46%,采用"1粗、1精”的工藝流程,在自然pH介質(zhì)的條件下,可以獲得如下小型閉路試驗指標:精礦含銅Cu20.46%,精礦銅回收率85.14%;中等品位氧化銅礦,原礦含Cu 1.46%,采用"2粗、2精、1掃”的流程,獲得如下小型閉路試驗指標:精礦含銅Cu 20.20%,精礦銅回收率68.11%;混合銅礦,原礦含Cu 0.95%,采用"2粗、2精、1掃"的流程,可以獲得如下小型閉路試驗指標:精礦含銅Cu 20.41%,精礦銅回收率74.40%。本試驗研究,以常規(guī)浮選藥劑處理楚雄某地的三種實際礦石,試驗流程簡單,浮選藥劑種類少、方便易得,最終獲得了較好的浮選指標,為建設(shè)日處理2,000噸的選礦廠提供了有效的技術(shù)參考。在選礦方法日趨成熟的當下,能夠以一種較為簡單、經(jīng)濟有效的方法進行有價金屬的回收也是一項不錯的選擇。
[Abstract]:As an important resource, copper plays an important role in China's national production and economic construction. Due to its excellent conductivity and excellent ductility, copper has been widely used in circuit components. In addition, copper has been widely used in building materials, mechanical equipment, decorative dyes and even biomedicine. China's copper imports reached 4.95 million tons in 2016, up 2.9 percent from a year earlier, according to the latest data released by the Chinese Customs. It can be seen that although China's economy is slowing down gradually under the new situation, copper imports in foreign markets are still heavily dependent. Copper is a very important strategic resource in our country. Although the separation technology of copper ore in our country has become more and more mature, it is still important to continue to carry out the research on copper separation in the new situation. This paper takes Chuxiong mixed copper mine in Yunnan Province as the main research object, and receives three kinds of actual ore samples from copper dressing plant: low grade mixed copper ore, medium grade copper oxide ore, mixed copper ore. In order to find out the basic properties, mineral composition and embedded state of the three kinds of copper ores, detailed process mineralogical studies were carried out on the three kinds of actual ores provided by Party A. The results of X-ray diffraction analysis show that the copper oxide minerals of the three copper ores are mainly malachite and silicomalite, the sulphide copper is chalcopyrite and porphyrite, and the gangue mineral is quartz. Low grade mixed copper mine, containing 0.46% copper, oxidation rate 14.78%, containing 3.91% bound copper oxide, copper mainly copper sulfide, medium grade copper oxide ore, The content of copper is 1.46%, the oxidation rate is 32.87%, the free copper oxide is 7.69 and the combination of copper oxide is 23.08. The mixed copper deposit is composed of the first two kinds of copper ores mixed in the proportion of 1:1, containing 0.955% copper, 71.53% copper sulfide, and 18.41% copper oxide. Then a single factor conditional experiment was carried out on three kinds of real ores. The grinding fineness of the three kinds of ores was determined to be -74 渭 m, which contained 70 渭 m. The reasonable dosage of conventional reagent was emphatically examined. The final amount of reagent was determined as follows: low grade mixed copper mine, Sodium sulfide 200g / t, Ding Ji xanthate 125 g / t, pine oil 20 g / t; medium grade copper oxide ore, sodium sulfide 1000g / t, lime 1000g / t, Ding Ji xanthate 150g / t, pine oil 30g / t; mixed copper mine, sodium sulphide 750g / t, lime 500g / t, Ding Ji xanthate 150g / t, pine oil 30g / t. In low grade mixed copper mine, the raw ore contains Cu 0.46%, using the technological process of "1 coarse and 1 fine", under the condition of natural pH medium, the following small closed circuit test indexes can be obtained: concentrate containing Cu 20.46, concentrate copper recovery rate 85.14, medium grade copper oxide ore, By using the process of "2 coarse copper and 2 fine cleaning", the following small closed circuit test indexes were obtained: concentrate containing Cu 20.20, concentrate copper recovery rate 68.11%, mixed copper mine, raw ore containing Cu 0.955.The process of "2 coarse copper 2 fine cleaning" was adopted. The following small closed circuit test indexes can be obtained: the copper content in concentrate is 20.41% and the recovery rate of copper in concentrate is 74.40%. In this experiment, the conventional flotation reagents are used to treat three kinds of real ores in Chuxiong. The test process is simple, the kinds of flotation reagents are few, the flotation reagents are convenient and easy to obtain, and a better flotation index is obtained. It provides an effective technical reference for the construction of 2000 ton concentrator per day. It is also a good choice to be able to recover valuable metals by a simple, economical and effective method at a time when ore dressing methods are becoming more and more mature.
【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】：TD952

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本文編號：1991715