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to study the mineral structure and surface characteristics of high-iron hydrargillite. Gibbsite, goethite, and hematite were found to be the main mineral components of hydrargillite, whereas the goethite and hematite were closely clad to the surface of the multilayer gibbsite crystals. Compared with the synthetic gibbsite, the hydrargillite contained more structural micropores generated by the mineral......
in iron removal from high iron sphalerite by hematite process YANG Fan1, 2, DENG Zhi-gan1, 2, WEI Chang1, 2, LI Xing-bin1, 2, LI Cun-xiong1, 2, QIU Wei-jia1, 2, ZHU Ru-long1, 2 (1. Faculty... the leaching liquor of high iron sphalerite by hematite process were investigated, the existent form and formation mechanism of Zn, Mg and S in hematite were discussed. The results show that the iron......
and Technology Beijing摘 要:Gold in cyanide tailings from Shandong Province is mainly encapsulated by hematite and magnetite at distribution rates of 76.49 % and 10.88... to investigate the effects of iron phase transformation on the high-temperature chlorination of gold.Results indicate that the lattice structure of hematite undergoes expansion, pulverization......
of approximately 71% from the feed iron ore slime assaying 56.2 wt% Fe. X-ray diffraction analyses indicated that the magnetic products contain magnetite and hematite as the major phases, whereas the nonmagnetic fractions contain quartz and hematite.关键词:......
liquor at different temperatures was investigated. The bauxite is comprised of gibbsite, aluminogoethite, hematite, kaolin, quartz, and minor boehmite. Lime increases the desilication efficiency... of Al2O3 entering the red mud, but the amount of aluminogoethite-to-hematite conversion promoted by lime leads to the increase of aluminogoethitic Al2O3 entering the digested liquor. The alumina......
献标志码:A 文章编号:1672-7207(2013)05-1754-06 Iron reduction of hematite by dissimilatory iron-reducing bacteria FENG Yali1, WANG Lijuan1, 2, LI Haoran2, ZHANG... of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China) Abstract: An experimental system was developed for the study of iron reduction of hematite......
the protolith types.I.The alteration paragenesis of granites has the first pervasive chlorite and the second filled hematite with two generations of chalcopyrite.After the third关键词:......
oxic and anoxic conditions[J]. American Mineralogist, 2003, 88(11/12): 1903-1914. [13] 谈波. 针铁矿,赤铁矿对铅的吸附及其CD-MUSIC模型拟合[D]. 武汉: 华中农业大学资源与环境学院, 2012: 26-27. TAN Bo. Lead adsorption on goethite, hematite......
is favorable for the iron ore sintering. The effects of sintering temperature and O2 content of inlet gas on the calcium ferrite formation characteristic of typical iron ores, including hematite... initially increases then decreases with the increase of the sintering temperature. The temperature of maximum calcium ferrite generation amount is determined as follows: for hematite and limonite......
g/L,反应时间3 h 和氧分压0.3 MPa的条件下除铁率达到95%以上,除铁后溶液Fe 含量低于2.5 g/L,赤铁矿渣的Fe 含量高于50%.K 和Ca 的入渣率高于95%,Na,F 和Ni 的入渣率为50%~60%,Zn,Mg,Mn 和Cl 的入渣率低于1%.关键词:高铁闪锌矿;赤铁矿;除铁;湿法炼锌Iron-removal by hematite from leaching...)Abstract:The precipitation process of hematite from the leaching liquor of high iron sphalerite was studied. The effects of temperature,seed addition,time and oxygen partial pressure on the iron......