新疆某氧化铅锌多金属矿综合回收试验研究
发布时间：2018-07-13 15:04
【摘要】：新疆某矿中铅和锌的品位分别为2.31%、2.51%,铅和锌的氧化率分别为84.48%、75.61%,伴生元素铁和锰的品位分别为27.12%、15.22%,属于氧化铅锌多金属矿。针对该矿氧化率高、共生元素多、难于回收的特点,对其可选性进行了系统研究。通过对原矿的工艺矿物学研究,查明了矿物的种类、嵌布状态及伴生关系。研究表明,矿石中的主要金属矿物有赤铁矿、针铁矿、水锰矿、菱锰矿、方铅矿、黑锌锰矿、软锰矿、铅硬锰矿等,主要脉石矿物有石榴子石、伊利石、方解石、铁白云石及石英等。矿石中铅锌矿物主要是Pb、Zn和MnO2类质同象的矿物-铅硬锰矿和黑锌锰矿,因此,分选难度较大。鉴于此,本文对以下三种方案:浮选工艺流程;重选-磁选联合工艺流程;还原焙烧-磁选工艺流程进行了研究,确定还原焙烧-磁选为最佳流程。并确定还原焙烧-磁选联合工艺流程的最佳条件为:还原焙烧时间3小时,温度1100℃,煤粉用量25%,焙渣磁选磨矿时间1小时,弱磁磁选强度0.2T,强磁磁选强度1.5180T。最终获得了含铁68.95%、铁回收率为80.70%的铁精矿,含锰31.27%,锰回收率77.40%的锰精矿,铅、锌元素可以在还原焙烧过程中的烟道中回收,铅的挥发率可达到82.69%,锌的挥发率可达到90.99%,选冶技术指标理想,很好的回收了该矿石中的铅、锌、铁、锰。本课题的研究,不仅为该矿山的开发提供了科学依据,而且在同类低品位、高氧化率氧化铅锌矿的开发研究方面具有一定的经济意义和理论指导意义。
[Abstract]:The grade of lead and zinc in a certain mine in Xinjiang is 2.31 and 2.51, the oxidation rate of lead and zinc is 84.48 and 75.61, respectively, and the grade of associated elements iron and manganese is 27.12 and 15.22 respectively, belonging to the lead zinc oxide polymetallic ore. Aiming at the characteristics of high oxidation rate, many symbiotic elements and difficult recovery, the selectivity of the ore is studied systematically. Through the study of the process mineralogy of the raw ore, the types of minerals, the distribution state and the associated relationship are found out. The results show that the main metallic minerals in the ore are hematite, goethite, ferromanganese, rhodochrosite, galena, blackzinc-manganese, pyrolusite, lead-permanganite, etc. The main gangue minerals are pomegranate, Illite, calcite, etc. Iron dolomite and quartz etc. The lead-zinc minerals in the ores are mainly the homogenous minerals of PbPb-Zn and MNO _ 2, which are lead-manganite and black-zinc-manganite, so it is difficult to separate them. In view of this, the following three schemes are studied in this paper: flotation process, combined gravity separation and magnetic separation process, and reduction roasting magnetic separation process, and it is determined that reduction roasting magnetic separation is the best process. The optimum conditions are determined as follows: reduction roasting time 3 hours, temperature 1100 鈩，
本文编号：2119808
[Abstract]:The grade of lead and zinc in a certain mine in Xinjiang is 2.31 and 2.51, the oxidation rate of lead and zinc is 84.48 and 75.61, respectively, and the grade of associated elements iron and manganese is 27.12 and 15.22 respectively, belonging to the lead zinc oxide polymetallic ore. Aiming at the characteristics of high oxidation rate, many symbiotic elements and difficult recovery, the selectivity of the ore is studied systematically. Through the study of the process mineralogy of the raw ore, the types of minerals, the distribution state and the associated relationship are found out. The results show that the main metallic minerals in the ore are hematite, goethite, ferromanganese, rhodochrosite, galena, blackzinc-manganese, pyrolusite, lead-permanganite, etc. The main gangue minerals are pomegranate, Illite, calcite, etc. Iron dolomite and quartz etc. The lead-zinc minerals in the ores are mainly the homogenous minerals of PbPb-Zn and MNO _ 2, which are lead-manganite and black-zinc-manganite, so it is difficult to separate them. In view of this, the following three schemes are studied in this paper: flotation process, combined gravity separation and magnetic separation process, and reduction roasting magnetic separation process, and it is determined that reduction roasting magnetic separation is the best process. The optimum conditions are determined as follows: reduction roasting time 3 hours, temperature 1100 鈩，
本文编号：2119808
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