The effect of temperature on leaching behavior of copper minerals with different occurrence states in complex copper oxide ores was carried out by phase analysis means of XRD, optical microscopy and SEM-EDS. The resul...The effect of temperature on leaching behavior of copper minerals with different occurrence states in complex copper oxide ores was carried out by phase analysis means of XRD, optical microscopy and SEM-EDS. The results indicated that at ambient temperature, the easily leached copper oxide minerals were completely dissolved, while the bonded copper minerals were insoluble. At lukewarm temperature of 40℃, it was mainly the dissolution of copper in isomorphism state. With increasing temperature to 60℃, the copper leaching rate in the adsorbed state was significantly accelerated. In addition, when the temperature increased to 80℃, the isomorphic copper was completely leached, leaving 11.2% adsorbed copper un-leached. However, the copper in feldspar-quartz-copper-iron colloid state was not dissolved throughout the leaching process. Overall, the leaching rates of copper in different copper minerals decreased in the order: malachite, pseudo-malachite > chrysocolla > copper-bearing chlorite > copper-bearing muscovite > copper-bearing biotite > copper-bearing limonite > feldspar-quartz-copper-iron colloid.展开更多
本文对碳捕集利用与封存(carbon capture,utilization and storage,CCUS)专利进行多粒度研究,揭示其发展概况与关键技术发展态势,为CCUS发展部署提供决策支撑。首先,运用专利计量法从时间、地域等方面进行粗粒度分析,解析CCUS发展趋势...本文对碳捕集利用与封存(carbon capture,utilization and storage,CCUS)专利进行多粒度研究,揭示其发展概况与关键技术发展态势,为CCUS发展部署提供决策支撑。首先,运用专利计量法从时间、地域等方面进行粗粒度分析,解析CCUS发展趋势、技术流动,挖掘技术热点和典型机构。其次,提出关键词抽取与分级合作关系网挖掘方法,获取共词网络与发明人分级合作关系网络。最后,利用Neo4j、Gephi实现CCUS关键技术的细粒度分析与可视化展示。以Innography收录的CCUS专利文献作为数据源,分析发现CCUS技术正处于交错发展期,中美是CCUS技术的领跑者;气体或蒸汽的分离等是CCUS最关键的前沿性技术;CCUS技术的研究机构及发明人呈现出聚集的发展态势。根据分析结果,为CCUS技术发展的战略布局提出建议。展开更多
基金Project(U1608254) supported by the Special Fund for the National Natural Science Foundation of ChinaProjects(ZJKY2017(B)KFJJ01,ZJKY2017(B)KFJJ02) supported by Zijin Mining Group Co.,Ltd.,China
文摘The effect of temperature on leaching behavior of copper minerals with different occurrence states in complex copper oxide ores was carried out by phase analysis means of XRD, optical microscopy and SEM-EDS. The results indicated that at ambient temperature, the easily leached copper oxide minerals were completely dissolved, while the bonded copper minerals were insoluble. At lukewarm temperature of 40℃, it was mainly the dissolution of copper in isomorphism state. With increasing temperature to 60℃, the copper leaching rate in the adsorbed state was significantly accelerated. In addition, when the temperature increased to 80℃, the isomorphic copper was completely leached, leaving 11.2% adsorbed copper un-leached. However, the copper in feldspar-quartz-copper-iron colloid state was not dissolved throughout the leaching process. Overall, the leaching rates of copper in different copper minerals decreased in the order: malachite, pseudo-malachite > chrysocolla > copper-bearing chlorite > copper-bearing muscovite > copper-bearing biotite > copper-bearing limonite > feldspar-quartz-copper-iron colloid.
文摘本文对碳捕集利用与封存(carbon capture,utilization and storage,CCUS)专利进行多粒度研究,揭示其发展概况与关键技术发展态势,为CCUS发展部署提供决策支撑。首先,运用专利计量法从时间、地域等方面进行粗粒度分析,解析CCUS发展趋势、技术流动,挖掘技术热点和典型机构。其次,提出关键词抽取与分级合作关系网挖掘方法,获取共词网络与发明人分级合作关系网络。最后,利用Neo4j、Gephi实现CCUS关键技术的细粒度分析与可视化展示。以Innography收录的CCUS专利文献作为数据源,分析发现CCUS技术正处于交错发展期,中美是CCUS技术的领跑者;气体或蒸汽的分离等是CCUS最关键的前沿性技术;CCUS技术的研究机构及发明人呈现出聚集的发展态势。根据分析结果,为CCUS技术发展的战略布局提出建议。
