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reduction; hot preheated pellets; swelling index; fibers iron 1 Introduction Direct reduced iron has been considered as necessary feeds in the production of high quality steel. Compared with traditional...]. In China, coal-based direct reduction process was developed in last few years and the traditional coal direct process can be described as follows [3]. Firstly, dry balls prepared from iron concentrates......
; reduction; iron oxides; pellets; sponge iron Cite this article as: Ilker KARA. Effect of reductant sodium bentonite content and reaction temperature in sponge iron production from composite pellets. [J... [1]. When composite pellets containing iron oxide and carbon are heated to high temperatures, the sponge iron produced by reduction of iron oxides may partly or fully melt linked to the temperature......
and holding time of 2.5 h is 1.48, suggesting over reduction of Fe2O3. Magnetization susceptibility of roasted rare-earth tailings is 2.48 when temperature is 570 °C and holding time is 0.5 h. Iron grade... of iron from vanadium tailings with coal-based direct reduction followed by magnetic separation [J]. Journal of Hazardous Materials, 2011, 185(2/3): 14.5-1411. [5] LEON Y S, CHANDRA V. A process......
into the prereduced ilmenite with carbon was more obvious with reduction degree increasing owing to the high porosity of prereduced ilmenite. Key words: molten iron; prereduced ilmenite; wetting; interfacial... and the reduction degree was 93.18%. The cylindrical iron specimen began to collapse at 1 467 K, indicating the melting commenced at this temperature. As shown in Fig.1(d), an intact wetting couple was formed......
Direct reduction of iron ore by biomass charHai-bin Zuo1,2,Zheng-wen Hu2,Jian-liang Zhang2,Jing Li2,Zheng-jian Liu21. State Key Laboratory of Advenced Metallurgy, University of Science and Technology... the process and mechanism of iron ore reduced by biomass char were investigated and compared with those reduced by coal and coke. It is found that biomass char has a higher reactivity. The increase of carbon......
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......
, and reductant content on the reduction process. PENG et al [7] simulated the reduction of Cr2O3 in dust by using Cr2O3, carbon, CaO and iron powder as the raw materials and suggested... that the fast reduction of carbon-bearing chromite pellet can be achieved above 1300 °C, the reduction reaction of iron is easier than that of chromium and the mole ratio of C-to-O=1.2 is better......
, China)Abstract:The recovery of iron from iron sinking slag and lead smelter slag was investigated by desulfurization-reduction bath smelting. The effects of lead smelter slag (LSS) to iron sinking..., temperature and feeding modes on iron enrichment were investigated in reduction experiments. The scanning electron microscope (SEM) and energy dispersive spectrometer (EDS) determination show that the iron......
Preparation of primary Al-Si alloy from bauxite tailings by carbothermal reduction process YANG Dong(杨 栋), FENG Nai-xiang(冯乃祥), WANG Yao-wu(王耀武), WU Xiao-lei(武小雷) School of Materials... and bituminite content on the preparation of primary Al-Si alloy by carbothermal reduction of bauxite tailings were investigated by XRD,XRF,infrared absorption carbon-sulfur analysis unit and SEM coupled......
Effects of Na2SO4 on iron and nickel reduction in a high-iron and low-nickel laterite oreXiao-ping Wang,Ti-chang Sun,Chao Chen,Jue KouKey Laboratory of Ministry of Education of China for Efficient... and nickel reduction in the roasting of a high-iron and low-nickel laterite ore through gas composition, X-ray diffraction, and scanning electron microscope analyses. Results showed that a reduction......
