| 由等外品钼精矿制备氧化钼实验研究 |
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| 引用本文： | 蒋丽娟,奚正平,李来平,张新,梁静,张文钲.由等外品钼精矿制备氧化钼实验研究[J].稀有金属,2011,35(1). |
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| 作者姓名： | 蒋丽娟 奚正平 李来平 张新 梁静 张文钲 |
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| 作者单位： | 1. 西北有色金属研究院钼研究中心,陕西,西安,710016;西安建筑科技大学材料科学与工程学院,陕西西安,710055
2. 西北有色金属研究院钼研究中心,陕西,西安,710016 |
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| 基金项目： | 陕西省"13115"科技创新工程重大科技专项 |
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| 摘 要： | 在水溶液中高压氧化钼精矿研究由等外品钼精矿(品位低于45%)制备工业三氧化钼的工艺.首先对等外品钼精矿进行常压盐酸浸出,除去其中大部分的铅、铜、铁等杂质,提升钼精矿品位.再对精制后的钼精矿进行加压氧化,制取工业三氧化钼.对影响钼精矿加压氧化的主要工艺参数进行了单因素实验,研究了温度、氧分压、颗粒粒度、搅拌速度、反应时间等因素对钼精矿氧化率的影响,并通过工艺稳定性实验,获得加压氧化钼精矿的理想工艺参数:温度200℃、氧分E,700 kPa、粒度<75 μm、搅拌速度400 r·min～、助氧化剂用量2%,反应时间2～3 h.该工艺条件下,钼精矿的氧化率大于99%.该工艺采用常压盐酸浸出+加压氧化的方法处理等外品钼精矿,提升钼精矿品位大于10%,钼的氧化率高.其中,10%左右的钼进入溶液,90%左右的钼转化为合格的工业氧化钼.该工业氧化钼的金属杂质含量极低,非常适合于制取钼酸铵.
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| 关 键 词： | 等外品钼精矿 精制 加压氧化 氧化钼 |
Preparation of Molybdenum Trioxide from Off-Grade Molybdenite |
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| Jiang Lijuan,Xi Zhengping,Li Laiping,Zhang Xin,Liang Jing,Zhang Wenzheng.Preparation of Molybdenum Trioxide from Off-Grade Molybdenite[J].Chinese Journal of Rare Metals,2011,35(1). |
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| Authors: | Jiang Lijuan Xi Zhengping Li Laiping Zhang Xin Liang Jing Zhang Wenzheng |
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| Affiliation: | Jiang Lijuan1,2,Xi Zhengping1,Li Laiping1,Zhang Xin1,Liang Jing1,Zhang Wenzheng1(1.Molybdenum Research Center,Northwest Non-Ferrous Metal Research,Xi'an 710016,China,2.College of Materials Science and Engineering,Xi'an University of Architecture Science and Technology,Xi'an 710055,China) |
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| Abstract: | Industrial process on molybdenum trioxide preparation from off-grade molybdenite(grade less than 45%) in aqueous solution by autoclave oxidation was studied.The off-grade molybdenite was processed with hydrochloric acid leaching technique at atmospheric pressure to remove most of the lead,copper,iron and other impurities to enhance the molybdenum concentrate grade.The refined molybdenite was oxidized by O2 under pressure to prepare molybdenum trioxide.A single-factor experiment was carried on,in that,the ef... |
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| Keywords: | off-grade molybdenite refinement autoclave molybdenum trioxide |
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