method for microwave direct reduction iron

2023-01-08T20:01:50+00:00
  • Separation and recovery of iron and nickel from lowgrade

    Phase transformation during the microwave carbothermic reduction roasting process by microwave irradiation heating occurred according to the following steps: (Fe,Ni) 2 SiO 4 (x = 0) and Mg x (Fe,Ni) 2−x SiO 4 (0 ≤ x ≤ 2) → Mg x Ca y (Fe,Ni) 2−x−y SiO 4 (0 ≤ x + y ≤ 2) → Mg x Ca 2−x SiO 44) mixed with carbon charcoal or coke, could be reduced to metallic iron Recently, microwave heating has become a new method of supplying energy, instead of heating with fire Microwave heating has been studied extensively to apply several chemical reductions and heating processesREDUCTION OF IRON ORE BY CHARCOAL UNDER MICROWAVE A method and apparatus for reducing iron oxides using microwave heating in a furnace chamber which is sealed against the entrance of air reduces the energy required and produces a low temperature reduction and allows the recovery of combustible synthetic gas as a byproduct of the process Avoidance of the reduction of sulfur, phorphorus and silica is also insured, as is the need to reduce USA1 Microwave heating method and apparatus

  • Preparation of reduced iron powder using combined

      The reduced iron powder was prepared in microwave field by combined distribution of woodcharcoal with the holding time 50 min (using Höganäs processringlike charging method, heavy oil was used as fuel and the reduction period was 172 h) The chemical composition of the products meets the HY10023 firstclass iron powder standardNew Method of Direct Reduction on Iron Concentrate Oxidized Pellets by Microwave Heating: HU Bing1, HUANG Zhucheng1, JIANG Tao1, PENG Hu2 (1 School of Mineral Processing and Bioengineering, Central South University, Changsha , Hunan, China 2 Changsha SYNOTHERM Co, Ltd, Changsha , Hunan, China : Abstract; Figure/Table; References ; Related Citation New Method of Direct Reduction on Iron Concentrate   Microwave reduction is a highly nonisothermal process and considering this, the effect of reductant dosage, temperature and microwave power on the reduction process was pursued The previous studies do not emphasize the carbon requirement, underlying reduction mechanism and hence lack the systematic approach for the evolution of iron oxides during reduction There are research Optimization of microwave carbothermal reduction for

  • Effect of sulfur on hydrogenreduction behavior of iron

      Hydrogenreduction behavior of a highsulfur magnetite sample was investigated in the presence of CaO under microwave irradiation at 1050 W and 245 GHz to clarify the effect of sulfur on the microwaveassisted reduction reaction of iron oxidesmethod for microwave direct reduction iron 15112014 The reduced iron powder was prepared in microwave field by combined distribution of charcoal with the holding time 50 min (using Höganäs processringlike charging method, heavy oil was used as fuel and the reduction period was 172 h) The chemical composition of the products meets the HY10023 firstclass iron powder standard method for microwave direct reduction ironDirect reduced iron (DRI), also called sponge iron, is produced from the direct reduction of iron ore (in the form of lumps, pellets, or fines) to iron by a reducing gas or elemental carbon produced from natural gas or coalMany ores are suitable for direct reduction Direct reduction refers to solidstate processes which reduce iron oxides to metallic iron at temperatures below the melting Direct reduced iron Wikipedia

  • Cost Effectiveness Analysis of HYL and Midrex DRI

    Another alternative to hot molten iron making is the direct reduction method In this method, iron is reduced in its solid state using either coal or natural gas as a fuel One advantage of this method is that iron can be added as lumps, pellets, or fines, and if coal is used, it does not need to be coked Therefore, a sinter/pellet and a coke plant is not needed for this operation The end In addition to the process route via the blast furnace process, there is another option for extracting crude steel from iron ores using the socalled direct reduced iron (DRI) process (secondary route) The starting point for the efforts to find an alternative to the blast furnace Direct reduced iron process tecscienceTo optimize the process variables for making direct reduced iron (DRI) by microwave heating, the reduction temperature, reduction time and the ratio of coal to material were studied with the Determination of metallic iron in direct reduced iron by

  • Microwaveassisted selfreduction of EAF dustbiochar

    This study applied microwave energy for rapid selfreduction of electric arc furnace (EAF) dustbiochar composite briquettes to produce powdered direct reduced iron (DRI) based on the good electromagnetic response of EAF dustbiochar composite briquettes The reduction experimental results showed that the ironbearing components in the dust were reduced to metallic iron, leading to a high Disclosed is a preparing method for direct reduced iron using low grade difficulttoreduce high phosphorus iron ore as raw materials The preparing method includes crushing ferric oxide iron ore to a granularity of 01mm so as to produce iron ore fines; mixing the iron ore fines, pulverized coals and auxiliaries sufficiently in a ratio of (8084): (69) : (812) by mass percentage, to produce CNA Preparing method for direct reduced iron A method for direct reduction of iron in a shaft reduction furnace Spent gas from the furnace is upgraded in reductant by removal of CO2and water to form an upgraded gas A fossil fuel is gasifiedUSA Method for the direct reduction of iron using

  • Overview of Market for Direct Reduced Iron

    Direct reduction ironmaking is a method for producing iron without using a blast furnace Direct reduction ironmaking was first industrialized in the 1960s, and various plants started to be built on the commercial and semicommercial scales Direct reduction ironmaking processes roughly fall into two classes, natural gas base and coal base, depending on the reductant used The former method for microwave direct reduction iron 15112014 The reduced iron powder was prepared in microwave field by combined distribution of charcoal with the holding time 50 min (using Höganäs processringlike charging method, heavy oil was used as fuel and the reduction period was 172 h) The chemical composition of the products meets the HY10023 firstclass iron powder standard method for microwave direct reduction ironA Laboratory Investigation th oef Reduction of the Iron Carbonate Bearing Ore to Iron Nugget by Means of the ITmk3 Technology 11 N Panishev, R Tahautdinov, A Posazhennikov, V and Bastrygin Behavior of CoalBased Direct Reduction Reaction of Iron Oxide Pellets by Microwave Heating 15 H Zhucheng, W Hua, H Bing, P Hit, andX Guangbinmicrowave iron direct reduced carbon prolocotorriit

  • (PDF) i) Direct Reduced Iron: Production

    This product is known as direct reduced iron (DRI) or sponge iron Processes that produce iron by reduction of iron ore (in solid state) below the melting point are generally classified as DR that can be added to the blast furnace Another alternative to hot molten iron making is the direct reduction method In this method, iron is reduced in its solid state using either coal or natural gas as a Cost Effectiveness Analysis of HYL and Midrex DRI Summary This chapter contains sections titled: Introduction Materials and method Results and discussion Conclusion Optimization of the Process Variables for Making Direct Reduced Iron by Microwave Heating using Response Surface Methodology Linqing Dai Key Laboratory of Unconventional Metallurgial (Kunming University of Science Technology), Ministry of Education, Optimization of the Process Variables for Making Direct

  • Microwaveassisted selfreduction of EAF dustbiochar

    This study applied microwave energy for rapid selfreduction of electric arc furnace (EAF) dustbiochar composite briquettes to produce powdered direct reduced iron (DRI) based on the good electromagnetic response of EAF dustbiochar composite briquettes The reduction experimental results showed that the ironbearing components in the dust were reduced to metallic iron, leading to a high A method for direct reduction of iron in a shaft reduction furnace Spent gas from the furnace is upgraded in reductant by removal of CO 2 and water to form an upgraded gas A fossil fuel is gasified to produce a hot gas which is tempered with a first stream of upgraded gas The mixture is desulfurized by reaction with lime to produce hot desulfurized gasUSA Method for the direct reduction of iron using method for microwave direct reduction iron 15112014 The reduced iron powder was prepared in microwave field by combined distribution of charcoal with the holding time 50 min (using Höganäs processringlike charging method, heavy oil was used as fuel and the reduction period was 172 h) The chemical composition of the products meets the HY10023 firstclass iron powder standard method for microwave direct reduction iron

  • USA Method of direct reduction of iron ore

    Method of direct reduction of iron ore Download PDF Info Publication number USA USA US05/603,196 USA USA US A US A US A US A US A US A US A US A US A Authority US United States Prior art keywords gas hydrogen stack carbon monoxide iron ore Prior art date   A method for producing direct reduced iron (DRI) through the reduction of ironoxidescontaining particles to metallic ironcontaining particles (DRI) in a reduction reactor, comprising a reduction zone and a lower discharge zone, by contacting said ironoxidescontaining particles with a high temperature reducing gas stream, comprising hydrogen and carbon monoxide in said reduction METHOD FOR THE DIRECT REDUCTION OF IRON OXIDES TO The effect of iron content on the reduction of nickel laterite by direct reduction method I Setiawan 1, E Febrina 1, A B Prasetyo 1, R Subagja 1, and F Firdiyono 1 Research Center For Metallurgy and Materials, Indonesian Institute of Sciences, Serpong, Tangsel, Indonesia Email: [email protected] Abstract Reduction and the compounds formed when the reduced laterite nickel has been PAPER OPEN ACCESS The effect of iron content on the

  • (PDF) i) Direct Reduced Iron: Production

    This product is known as direct reduced iron (DRI) or sponge iron Processes that produce iron by reduction of iron ore (in solid state) below the melting point are generally classified as DR   Direct reduced iron (DRI) is the product which is produced by the direct reduction of iron ore or other iron bearing materials in the solid state by using noncoking coal or natural gas Processes which produce DRI by reduction of iron ore below the melting point of the iron are normally known as the direct reduction (DR) processes The reducing agents are carbon monoxide (CO) and hydrogen Direct Reduced Iron and its Production Processes – IspatGurumethods of producing iron: the blast furnace method, direct reduction, and iron smelting direct reduced iron, and smelter metal will make up the remainder of the required iron units Coal and natural gas injection will increase, possibly supplying up to 50% of total furnace carbon reductant requirements Specific productivity in the blast furnace will increase The major drivers for 20 Process Development Ironmaking American Iron and

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