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prepared as iron oxide red with a productivity of 0.54 ton per unit ton of the dust.Middle iron concentrate with an Fe content of 65.92wt% can be reused as feeding material in the ironmaking...Investigation on steelmaking dust recycling and iron oxide red preparingPingfeng Fu~(1)Qiang Zhang~(2) (1)College of Arts & Science,Beijing Union University,Beijing 100083,China (2)School......
铁. 关键词: 铜渣；直接还原；磨矿；磁选；金属铁 中图分类号:TF09,X758 文献标志码:A Iron recovery from copper-slag with lignite-based direct reduction followed by magnetic separation YANG Hui-fen, JING Li-li, DANG Chun-ge (Civil and Environmental Engineering School,University of Science and Technology Beijing, Beijing 100083, China) Abstract: In order to recycle iron from copper slag......
of the structural ferrous ions in RCK were removed by hydrochloric acid. However, iron sites in CCK changed slightly by oxalic acid leaching because nearly all ferrous ions were transformed into ferric species after firing at 900°C. It can be concluded that it is difficult to remove the structural ferric ions and ferric oxides evolved from the structural ferrous ions. Thus, iron removal by acids should......
, vanadium is adsorbed on the surface of the iron hydroxide by inner layer complexation. Key words: sodium chromate; vanadium removal; non-calcium roasting; ferric hydroxide; adsorption 铬盐是重要的无机化工原料,产品主要应用于... by non-calcium roasting technology with chromium salt, such problems as large amount of calcium salt, repeatedly adjusting the pH value, slag containing calcium chromate and other issues, iron salts were......
at 90 °C. The variation of the phases containing sulfur and the change of the iron contents in the dissolved basic ferric sulfate were determined. In the second group, the obtained slurry was directly... dissolution Ferric subsulfate dissolution experiments were conducted using the residue obtained from pressure oxidation process under the above-mentioned conditions. Sulfur and iron content was analyzed......
Trans. Nonferrous Met. Soc. China 31(2021) 1113-1126 Efficient destruction of sodium cyanide by thermal decomposition with addition of ferric oxide Kai-wei DONG1, Feng XIE1, Wei WANG1, Yong-feng... Received 30 April 2020; accepted 22 November 2020 Abstract: Efficient destruction of cyanide by thermal decomposition with ferric oxide addition was proposed. The mechanism of destruction of sodium......
). 表1 Fe2O3原料元素分析 Table 1 Elemental analysis of ferric oxide raw (mass fraction, %) 1.3 实验方法 本研究根据云南某铜业公司提供的铜冶炼污酸,经分析成分如表2所示,该酸度在80~200 g/L之间,因铜冶炼污酸成分复杂,试验采用相应酸度硫酸进行Fe2O3的浸出动力学研究,排除其他... 配比污酸与硫酸浸出铁对比 Fig. 2 Comparison of leaching iron with copper-smelting waste acid and sulfuric acid 图3 25 ℃和65 ℃下不同酸度污酸溶液中浸出铁的变化 Fig. 3 Changes of iron dissolution in waste......
reductive sintering process in system Fe2O3-SiO2-Al2O3 have been reported in the literature. KELLEY [15] prepared Fe2SiO4 by heating finely powdered silica, ferric oxide and iron mixtures in nickel cartridge... and ferric oxide were mixed with the mass ratio of 3.64:1 in order to ensure that the molar ratio of aluminum oxide, silicon dioxide and iron oxide in raw meal was the same as that in Figs. 10-12. The range......
in the ferric-arsenic(Ⅲ)-sulfate system: Thermodynamic modeling[J]. Minerals Engineering, 2003, 16(5): 429-440. [17] SWASH P M, MONHEMIUS A J. Hydrothermal precipitation from aqueous solutions containing iron... Gibbs free energy variation of main reactions 图2 各含铁物相最终能量收敛图 Fig. 2 Final energy convergence of each phase contains iron 2 结果与讨论 2.1 初始Na+浓度的影响 在体系初始砷浓度10 g/L,初始铁砷摩尔比1.5,初始pH为1,反应温......
