云南楚雄混合铜矿选矿试验研究

发布时间：2018-06-07 15:45

本文选题：混合铜矿 + 氧化铜矿　；参考：《昆明理工大学》2017年硕士论文

【摘要】：铜作为一种重要的资源,在我国国民生产、经济建设中发挥着重要的作用。优良的导电能力与卓越的延展性,使铜在电路元器件中得到广泛应用;除此以外,铜在建筑材料、机械设备、装饰染料乃至生物医药上均得到大量应用。据中国海关公布的最新数据显示,2016年我国铜进口量达495万吨,同比增长2.9%,可以看出,尽管我国经济在新形势下逐步放缓,铜进口在国外市场上的仍然存在较大的依赖度。铜作为我国非常重要的战略资源,尽管我国的铜矿选别技术已日趋成熟和完善,在新形势下继续开展对铜选别的研究依然显得有重要。本篇论文以云南楚雄混合铜矿为主要研究对象,共收到来自铜选厂的三种实际矿石矿样:低品位混合铜矿,中等品位氧化铜矿,混合铜矿。针对甲方提供的三种实际矿石分别展开了较为详尽的工艺矿物学研究,以查明这三种铜矿石的基本性质、矿物组成与嵌布状态等。矿石的X射线衍射分析结果表明,这三种铜矿的氧化铜矿物以孔雀石、硅孔雀石为主;硫化铜矿物以黄铜矿、斑铜矿为主;脉石矿物为石英。低品位混合铜矿,含铜0.46%,氧化率14.78%,含3.91%的结合氧化铜,铜主要为硫化铜;中等品位氧化铜矿,含铜1.46%,氧化率32.87%,其中游离氧化铜占7.69%,结合氧化铜占23.08%;混合铜矿是将前两种铜矿石按照1:1的比例混合而成,含铜0.95%,含71.53%硫化铜矿,结合氧化铜达18.41%。随后对三种实际矿石展开了单因素条件实验,经磨矿细度测定,三种矿石磨矿细度均为-74μm含70%,着重考查较为合理的常规药剂用量,最终确定的药剂用量如下:低品位混合铜矿,硫化钠200g/t,丁基黄药125g/t,松醇油20 g/t;中等品位氧化铜矿,硫化钠1000g/t,石灰1000g/t,丁基黄药150g/t,松醇油30g/t;混合铜矿,硫化钠750g/t,石灰500g/t,丁基黄药150g/t,松醇油30g/t。低品位混合铜矿,原矿含Cu 0.46%,采用"1粗、1精”的工艺流程,在自然pH介质的条件下,可以获得如下小型闭路试验指标:精矿含铜Cu20.46%,精矿铜回收率85.14%;中等品位氧化铜矿,原矿含Cu 1.46%,采用"2粗、2精、1扫”的流程,获得如下小型闭路试验指标:精矿含铜Cu 20.20%,精矿铜回收率68.11%;混合铜矿,原矿含Cu 0.95%,采用"2粗、2精、1扫"的流程,可以获得如下小型闭路试验指标:精矿含铜Cu 20.41%,精矿铜回收率74.40%。本试验研究,以常规浮选药剂处理楚雄某地的三种实际矿石,试验流程简单,浮选药剂种类少、方便易得,最终获得了较好的浮选指标,为建设日处理2,000吨的选矿厂提供了有效的技术参考。在选矿方法日趋成熟的当下,能够以一种较为简单、经济有效的方法进行有价金属的回收也是一项不错的选择。
[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.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD952

【参考文献】