共搜索到415条信息,每页显示10条信息,共42页。用时:0小时0分1秒656毫秒
leaching; sphalerite concentrate; silver; low-grade manganese ore; [全文内容正在添加中] ......
Trans. Nonferrous Met. Soc. China 31(2021) 1784-1795 Selective depression of copper-activated sphalerite by polyaspartic acid during chalcopyrite flotation Qian WEI, Fen JIAO, Liu-yang DONG, Xue-duan... flotation reagent, polyaspartic acid (PAPA), was tested as a potential selective depressant in the flotation separation of chalcopyrite and Cu-activated sphalerite. The depression mechanism of PAPA......
......
一化处理,得到归一化峰强度将用统计学方式表达.统计数据的说明用箱形图表示,如图2所示,其中测量数据的平均值由虚线所示. 图2 闪锌矿表面氢氧化铁的归一化峰强度箱形图 Fig. 2 Illustration of box plot showing normalized intensity of iron oxyhydroxide species on sphalerite...的表面铜的二次离子含量有所下降,这将导致闪锌矿被抑制. 图7 采用不同磨矿介质时闪锌矿表面氢氧化铁的归一化峰强度 Fig. 7 Normalized intensity of iron oxyhydroxide species on sphalerite surfaces by different types and different sizes of grinding......
(-ZnS),将-ZnS(分析试剂)置于高温管式炉中,并通入惰性气体后升温,固态烧结的温度和时间分别为1223 K和120 min,为了得到均匀的物相,烧结结束后继续在1123 K温度下保温60 min.最终得到的人造闪锌矿的XRD谱如图1所示. 图1 人造闪锌矿的XRD谱 Fig. 1 XRD pattern of artificial sphalerite 1.2... leaching of artificial sphalerite Mn-Zn-S-H2O系的φ-pH图如图5所示.Mn元素也能实现类似的氧化还原过程及Mn4+与Mn2+之间的相互转化,从而实现阳离子氧化还原催化,但相较而言,浸出体系中Mn4+是以MnO2形式存在的,在溶解氧作用下Mn4+与Mn2+的相互转化较为困难. 图5 Mn-Zn-S-H2O系φ-pH图 Fig. 5......
analysis results of sphalerite samples (mass fraction, %) 图1 闪锌矿矿样的XRD谱 Fig. 1 XRD pattern of sphalerite samples 1.2 制备方法 图2所示为ZnS-ZnO异质结的制备流程图.首先称取2 g闪锌矿样品放入瓷舟中,并将瓷舟置于真空管式炉内并加热至600... synthesis of highly efficient ZnO/ZnFe2O4 photocatalyst using earth-abundant sphalerite and its visible light photocatalytic activity[J]. Applied Catalysis B: Environmental, 2018, 226(1): 324-336. [20......
:1672-7207(2007)03-0439-06 Mutagenesis of mixed bacteria and influence on bioleaching of sphalerite with the mutagenized bacterial admixture KANG Jian1, 2, GAO Jian1, 2, WU Xue-lin1, DING Jian-nan1, QIU... higher ore-leaching rate. Zn2+ leached from sphalerite is 68% and 84% higher respectively in the 9K and Leathen media inoculated with mutagenized group E than that in the controlled media inoculated......
of mineral composition (mass fraction, %) 表4 闪锌矿的能谱微区成分分析结果 Table 4 Results of energy spectral composition analysis for sphalerite (mass fraction, %) 由表4分析可知,闪锌矿由于类质同像置换普遍含有较高的铁而属于铁闪锌矿的范畴,同时还含有少量...,导致泡沫浮选很难回收而损失在尾矿中. 表5 各工艺矿样中闪锌矿的解离度 Table 5 Liberation degree of sphalerite in products 图1 原浮选工艺产品闪锌矿MLA彩图 Fig. 1 MLA color maps of original flotation process products 铜尾矿中闪......
-principle theory calculations of electronic structure of sphalerite with vacancy and impurity CHEN Jian-hua1, ZENG Xiao-qin2, CHEN Ye1, ZHANG Hui-peng2 (1. College of Resources and Metallurgy, Guangxi University, Nanning 530004, China; 2. College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China) Abstract: The electronic structures of sphalerite with Zn-vacancy, S......
and temperature on rate of zinc extraction from sphalerite in the of presence and absence of A. ferrooxidans were studied, respectively. The unreacted shrinking core model was used for describing the reaction... by A. ferrooxidans. The produced sulfur on the surface of the sulfides can be oxidized by A. ferrooxidans after bio-electro-generative leaching for 24 h. Key words: sphalerite; electro-generative......