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(A.f) bio-leaching Figure 5 presents the change of ferric ion and pH during the leaching. With the decrement in Fe(III), vanadium leached into solution. The drop of total iron should originate.... It is likely that in vanadium bio-leaching the reaction of iron deposition depends much on the ratio of Fe(III)/Fe(II) at pH 1.8. Figure 6 Effects of (a) pH and (b) ferric to ferrous ratio on vanadium......
of original iron grain in reductive clinkers is determined by the combined forms of hematite in ferric bauxite ore, and both large and fine grains can be a component unit of secondary iron grain aggregates... in the sintering necks of grains, which indicates the sintering of grains was promoted by surface carburization. Key words: ferric bauxite; iron; direct reduction; metallographic structure 铝是仅次于钢铁的第二金属,具有低密度,高导电率......
in Bayer digestion process is crucially important to deal with high-iron diasporic bauxite economically for alumina production. The reaction behaviors of hydrothermal reduction of ferric oxide in alkali... in the Bayer digestion process of diasporic bauxite. Key words: Bayer process; digestion; hydrothermal reduction; ferric oxide; magnetite 1 Introduction The high-iron bauxite ores with prospective......
removal of soluble ferric compounds from sodium aluminate solution LI Xiaobin, LI Chongyang, QI Tiangui, ZHOU Qiusheng, PENG Zhihong, LIU Guihua (National Engineering Laboratory for Efficient Utilization... to directly remove the soluble ferric compounds from sodium aluminate solution with high concentration. The influence of various factors on the removal of ferric compounds and the flotation mechanism......
iron removal again. In this process, it is required that the concentration of ferrous ions, ferric ions and pH value in each reactor should be kept within a certain range, as well as the outlet... involves the changes of the concentration of ferrous iron, ferric ions and hydrogen ions, as well as the addition of oxygen and calcine. The concentrations of ferrous ions, ferric ions and hydrogen ions......
Fundamentals of fast reduction of ultrafine iron ore at low temperaturePei Zhao and Peimin Guo State Key Laboratory for Advanced Iron and Steel Processes and Materials, China Iron and Steel Research Institute Group, Beijing 100081, China摘 要:Fundamentals on the fast reduction of ultrafine iron ore at low temperature, including characterization......
-supported Ni foam-based NEGSs by simple immersion in a ferric nitrate (Fe(NO3)3) solution at room temperature. Specifically, the iron element is highly dispersed on the Ni foam (NF) surface. Moreover... to construct Ni-based non-enzymatic glucose sensor. The iron was highly dispersed on the surface of Ni foam after ferric nitrate solution treatment. As a consequence, the Fe/NF-20-8 electrode exhibits......
consumption, higher productivity and better environmental protection is concerned by more and more steel enterprises. Due to the pure and stable composition, direct reduction iron (DRI) is considered...J. Cent. South Univ. (2012) 19: 2291-2296 DOI: 10.1007/s11771-012-1274-0 Action rules of H2 and CO in gas-based direct reduction of iron ore pellets YI Ling-yun(易凌云)1, HUANG Zhu-cheng(黄柱成)1, PENG Hu......
minerals and less than 57% Fe. The ratio between the alumina and the iron (A12O3/Fe) must be below 0.05, and the ratio of alumina and silica (A12O3/SiO2) must be below 1, to achieve good productivity... J. Cent. South Univ. (2018) 25: 2857-2870 DOI: https://doi.org/10.1007/s11771-018-3958-6 Chemical, physical, thermal, textural and mineralogical studies of natural iron ores from Odisha......
Mechanism of influence of ferric ion on electrogenerative leaching of sulfide minerals with FeCl3 WANG Shao-fen(王少芬)1, 2, FANG Zheng(方 正)2 1. Department of Chemistry and Environmental...; Abstract: A dual cell system was used to study the influence of ferric ion on the electrogenerative leaching of sulfide minerals. Reaction mechanisms for the ferric chloride electrogenerative leaching......
