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  • Microwave absorbing properties of flake-shaped

    2017-12-1 · Microwave absorbing properties of flake-shaped carbonyl iron/reduced graphene oxide/epoxy composites. For spherical carbonyl iron powder mixed with reduced graphene oxide and then ball-milled for 60 Graphene comprises of a single layer of carbon atoms which are compactly bonded in a two-dimensional hexagonal lattice.

  • Cited by: 22
  • Microwave-assisted synthesis of carbon dots modified

    Herein, carbon dots modified reduced graphene oxides (LAP-rGO-CDs) are designed and synthesized via a rapid and green microwave-assisted method with l-Ascorbic acid 6-palmitate (LAP) as the reducing agent. LAP-rGO-CDs present enlarged interlayer spacing and faster ion transfer rate owing to the introducing of carbon dots.

  • Author: Shu Dong, Yali Song, Yongzheng Fang, Kai Zhu, Ke Ye, Yinyi Gao, Jun Yan, Guiling Wang, Dianxue Cao
  • Microwave-assisted ammonia decomposition reaction

    2017-2-1 · Iron incorporated mesoporous carbon catalysts are used in microwave focused system. • Conversion of ammonia is seen at 300 °C in microwave system with catalysts.. Complete conversion is obtained at 450 °C in microwave system at 36,000 ml/h g cat of NH 3.. Higher activity was obtained in microwave system in comparison to conventional system.

  • Cited by: 62
  • The recent progress of MXene-Based microwave

    2021-4-15 · Graphene nanosheet- and flake carbonyl iron particle-filled epoxy-silicone composites as thin-thickness and wide-bandwidth microwave absorber Carbon,86 ( 2015 ),pp. 98 107 Article Download PDF View Record in Scopus Google Scholar

  • Direct reduced iron process tec-science

    2018-6-21 · Direct reduced iron (DRI) process. In addition to the process route via the blast furnace process, there is another option for extracting crude steel from iron ores using the so-called direct reduced iron (DRI) process (secondary route).The starting point for the efforts to find an alternative to the blast furnace process was the relatively high process expenditure.

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  • Facile preparation and excellent microwave

    In this work, a cobalt-iron/biomass porous carbon (CoFe/BPC) composite material is prepared through a facile in situ reduction process using fir wood as the raw material. CoFe 2 O 4 is successfully reduced to CoFe alloy by the BPC after the heat treatment process. The morphology characteristics indicate that the CoFe particles are uniformly

  • Author: Chen Ji, Yi Liu, Yunyu Li, Xiaolei Su, Jie Xu, Linlin Lu
  • Microwave reduction of graphene oxide ScienceDirect

    2020-12-1 · Substituting rGO paper with iron wire or paper clips also yielded similar results. In a similar work, Wan et al. reported the synthesis of porous graphene by using a copper wire as a heating agent. The microwave treatment was done for 2 s at a time and

  • Cited by: 6
  • Green Hydrogen-Based Direct Reduction for Low-Carbon

    tion of iron ore to sponge iron by using NG or other gaseous reducing agents takes place. Lump ore or pellets are charged from the top of the shaft fur-nace as raw material and reduced inside the furnace producing direct reduced iron according to the following overall reduction reactions[13] Fe 2O 3 þ3H 2! 2Feþ 3H 2O ΔH R ¼ 99kJmol 1 (1) Fe

  • 40 CFR § 98.173 Calculating GHG emissions. CFR

    2021-5-24 · (Iron) = Annual mass of direct reduced iron (if any) charged to the furnace (metric tons). (C Iron ) = Carbon content of the direct reduced iron,from the carbon analysis results (expressed as a

  • EXPERIMENTAL STUDY ON IRON RECOVERY BY

    ratio, microwave power, heating time and slag former ratio on recovery of iron. The results show that microwave power is the main factor affecting iron recovery. After optimized by orthogonal experimental results, in the case when carbon to oxygen ratio is 1,5, microwave power is 3 000 W, heating time is 45 min, slag former ratio is 5 % ,the

  • Jiann-Tang HWANG -- Microwave steel manufacture

    2020-4-19 · The carbon content of the iron must be reduced to make steel. This is commonly done in a basic oxygen furnace (BOF). Pure oxygen is blown, at supersonic velocity, into a molten mass, including liquid iron, contained in a bottle-shaped furnace. The oxygen reacts with the carbon in the molten iron to form CO and CO2.

  • Hot Airflow Ignition with Microwave Heating for Iron Ore

    nickel-iron grains in the reduction roasting of nickeliferous laterite briquette by microwave heating.11) Ishizaki12) held that composite of hematite and carbon can be heated and reduced rapidly by microwave heating. And in industrial simulating of reduction of iron ore pellets with coal, micro-wave heating manifested advantages of higher

  • Method for direct metal making by microwave energy

    2000-2-14 · To make steel, the carbon content of the iron must be reduced. This is commonly done in a basic oxygen furnace (BOF). Pure oxygen is blown, at supersonic velocity, into a molten mass, including liquid iron, contained in a bottle-shaped furnace. The oxygen reacts with the carbon in the molten iron to form CO and CO 2. Sulphur, which is harmful

  • Facile growth of carbon nanotubes using microwave

    In both of the “direct growth” and “medium growth” pathways, metal compounds such as ferrocene, iron acetate and cobalt sulfide are often selected as the catalysts due to their high dispersibility and reactivity. 34–36,46,52,64–72 Before microwave irradiation, the catalyst is

  • Highly Efficient Wideband Microwave Absorbers Based on

    2019-8-25 · processes, carbonization [12], direct [10], or electroless [7,11] plating and sol-gel [18] techniques are just a few of them. In this paper, we proposed a novel, Pechini-based preparative approach to obtain carbon-protected zero-valent iron (ZVI) and binary or ternary Fe/Co/Ni alloy nanoparticles (NPs) supported on reduced graphene oxide (rGO).

  • Preparation and microwave absorption properties of

    2018-1-11 · Microwave absorbing materials with the properties of thinness, lightweight, broadband and strong absorption have received increasing attention due to their pragmatic and effective functions for reducing electromagnetic interference (EMI) pollution and the defense stealth technology. 1,2 1. Y.

  • Microwave absorption properties of helical carbon

    2013-8-8 · Helical carbon nanofibers (HCNFs) coated-carbon fibers (CFs) were fabricated by catalytic chemical vapor deposition method. TEM and Raman spectroscopy characterizations indicate that the graphitic layers of the HCNFs changed from disorder to order after high temperature annealing. The electromagnetic parameters and microwave absorption properties were measured at 2–18 GHz.

  • High-quality graphene via microwave reduction of

    2016-9-23 · Efficient exfoliation of graphite in solutions to obtain high-quality graphene flakes is desirable for printable electronics, catalysis, energy storage, and composites. Graphite oxide with large lateral dimensions has an exfoliation yield of ~100%, but it has not been possible to completely remove the oxygen functional groups so that the reduced form of graphene oxide (GO; reduced form: rGO

  • 核壳结构复合吸波材料研究进展 USTB

    2018-11-21 · You W B, She W, Liu Z W, et al. High-temperature annealing of an iron microplate with excellent microwave absorption performance and its direct micromagnetic analysis by electron holography and Lorentz microscopy. J Mater Chem C, 2017, 5(24):6047 [10]

  • Facile growth of carbon nanotubes using microwave ovens

    In both of the “direct growth” and “medium growth” pathways, metal compounds such as ferrocene, iron acetate and cobalt sulfide are often selected as the catalysts due to their high dispersibility and reactivity. 34–36,46,52,64–72 Before microwave irradiation, the catalyst is

  • Microwave-synthesized freestanding iron-carbon nanotubes

    2017-1-11 · Microwave-synthesized freestanding iron-carbon nanotubes on polyester composites of woven Kevlar fibre and silver nanoparticle-decorated graphene. Sci. Rep. 7,40386; doi: 10.1038/srep40386 (2017).

  • Highly Efficient Wideband Microwave Absorbers Based on

    2019-8-25 · processes, carbonization [12], direct [10], or electroless [7,11] plating and sol-gel [18] techniques are just a few of them. In this paper, we proposed a novel, Pechini-based preparative approach to obtain carbon-protected zero-valent iron (ZVI) and binary or ternary Fe/Co/Ni alloy nanoparticles (NPs) supported on reduced graphene oxide (rGO).

  • Jiann-Tang HWANG -- Microwave steel manufacture

    2020-4-19 · The carbon content of the iron must be reduced to make steel. This is commonly done in a basic oxygen furnace (BOF). Pure oxygen is blown, at supersonic velocity, into a molten mass, including liquid iron, contained in a bottle-shaped furnace. The oxygen reacts with the carbon in the molten iron to form CO and CO2.

  • Method for direct metal making by microwave energy

    2000-2-14 · To make steel, the carbon content of the iron must be reduced. This is commonly done in a basic oxygen furnace (BOF). Pure oxygen is blown, at supersonic velocity, into a molten mass, including liquid iron, contained in a bottle-shaped furnace. The oxygen reacts with the carbon in the molten iron to form CO and CO 2. Sulphur, which is harmful

  • Microwave Characterization of Metal-Decorated Carbon

    2019-7-30 · microwave properties of the whole nanocomposite mixture are retrieved. We study here decorated carbon-based nano-powders preferable to other powders precisely because there are no methods reported for their characterization in the microwave frequency range, and as part of a research project “Nano4waves” [26] aimed at developing carbon

  • Microwave-assisted synthesis of iron oxide nanoparticles

    2017-10-13 · A striking benefit of the microwave-assisted synthesis, which strongly differentiates this method from the classic ones, is the reduced reaction time as well as the homogenous heat supply due to the almost instantaneous interaction of the electromagnetic field with the material being processed rather than surface heating. 20 20. X.

  • MOF-derived graphitized porous carbon/Fe–Fe 3 C

    2019-6-5 · With the mass ratio of Fe 3 O 4 nanoparticles increasing, the ferrous iron and ferric iron would be reduced to alpha-Fe eventually . Nanoporous carbon (NPC) derived from ZIF-8 was chosen as a lightweight dielectric loss part, and metallic magnetic iron carbide reduced by Fe 3 O 4 act as a magnetic loss part in dual-loss composite absorbents .

  • Ironmaking 101 From Ore to Iron with Smelting and Direct

    2017-10-17 · It is also the world's third-largest producer of LNG and is forecast to be the world leader by 2020. Reduction of iron ore to reduced iron form adds value and provides more compact products, which reduces shipping costs. The specific iron content of the direct reduced iron is a function of the iron content of the iron ore.

  • 核壳结构复合吸波材料研究进展 USTB

    2018-11-21 · You W B, She W, Liu Z W, et al. High-temperature annealing of an iron microplate with excellent microwave absorption performance and its direct micromagnetic analysis by electron holography and Lorentz microscopy. J Mater Chem C, 2017, 5(24):6047 [10]