microwave technology for iron ore reduction

  • Influence of microwave heating on the microstructures of

    Jun 14, 2016· A comparison of the iron ore oxidised pellets with coal (out-proportioning) by conventional heating and microwave heating was carried out in this paper. Microstructure transformations during reduction process were investigated by optical microscopy and scanning electron microscope with energy dispersive spectrometry analysis.REDUCTION OF IRON ORE BY CHARCOAL UNDER ,Reduction Of Iron Ore By Charcoal Under Microwave Irradiation 45 Table 2. XRF data of the sample (2000 Watt) Based on table 2, the longer irradiation time, the greater Fe content in the sample. The highest Fe content was reached by microwaves heating for 50 minutes in 2000 Watt power supply, approximately 77.29%.

  • Microwaves Applied to Carbothermic Reduction of Iron Ore

    May 09, 2016· Results of reduction tests conducted on iron ore pellets with carbon are presented in this work. Work done is centered on reduction kinetics using carbon as the reducing agent with a conventional heat supply (heat transfer process) compared with reduction kinetics where heat is supplied by microwaves to the whole volume. Ore used in this work is called “Alzada” which has well GHANA JOURNAL OF TECHNOLOGY University of Mines and,The microwave technology was used for the reduction process. Composite pellets composed of the iron ore, reducing agents of different blends and flour (binder) were formed and subjected to a 2400 MW, 50 Hz microwave for firing. Each pellet was fired for forty minutes.

  • Direct reduced iron Wikipedia

    Direct 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 coal.Many ores are suitable for direct reduction. Direct reduction refers to solid-state processes which reduce iron oxides to metallic iron at temperatures below the meltingCarbothermal Reduction of Iron Ore Applying Microwave,This paper presents the results of a study on carbothermal reduction of iron ore made under the microwave field in equipment specially developed for this purpose. The equipment allows the control of radiated and reflected microwave power, and therefore measures the microwave energy actually applied to the load in the reduction process.

  • Microwaves for Reduction of Iron Ore Pellet by Carbon

    Microwaves Applied to Carbothermic Reduction of Iron Ore Pellets January 1997 · The Journal of microwave power and electromagnetic energy: a publication of the International Microwave GHANA JOURNAL OF TECHNOLOGY University of Mines and,The microwave technology was used for the reduction process. Composite pellets composed of the iron ore, reducing agents of different blends and flour (binder) were formed and subjected to a 2400 MW, 50 Hz microwave for firing. Each pellet was fired for forty minutes.

  • Direct reduced iron Wikipedia

    Direct 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 coal.Many ores are suitable for direct reduction. Direct reduction refers to solid-state processes which reduce iron oxides to metallic iron at temperatures below the meltingCarbothermal Reduction of Iron Ore Applying Microwave,This paper presents the results of a study on carbothermal reduction of iron ore made under the microwave field in equipment specially developed for this purpose. The equipment allows the control of radiated and reflected microwave power, and therefore measures the microwave energy actually applied to the load in the reduction process.

  • (PDF) Microwave reduction of a nickeliferous laterite ore

    Microwave reduction of a nickeliferous laterite oreApplication of Microwave Technology to the Production of,Microwave Technology to the Production of Iron Nuggets from the Sheini Iron Ore using Mixed Plastics Waste as Reductants”, Ghana Journal of Technology, Vol. 2, No. 2, pp. 79 87. Abstract Disposal of waste plastics is currently a huge global problem, especially in

  • Reduction of iron ore with coal by microwave heating

    Microwave heating of iron ore was investigated as an alternative to conventional reduction processes to solve the problem of slow heat transfer. Microwave heating and reduction tests were run on composite green balls made from coal and magnetite concentrate. Bench-scale tests were run on both powdered and pelletized feeds using a 15 kW microwave generator.Reduction ore CO ResearchGate,Reduction of Microwavelrradiated lron ore Particles in CO Mineral Technology Theeffect of microwave present ore optimumreduction wasobtained

  • Application of Microwave Energy for Production of Iron

    The reduction of iron oxides using microwave energy as heating source has been previously investigated. Ishizaki et al. (2006) investigated the microwave reduction of magnetite ore–coal composite pellets in a nitrogen gas atmosphere. They observed by means of XRD analysis that the reduction of magnetite started at about 800°C andCarbothermal Reduction of Iron Ore Applying Microwave,Composite pellets of iron ore and carbon were subjected to microwave radiation and the amount of microwave energy absorbed during carbothermal reduction was measured. Although only a

  • Hunan Wise Microwave Technology Co.,Ltd Technical Support

    Hunan Wise Microwave Technology Co.,Ltd provide high temperature microwave sintering, microwave thermal reduction, microwave muffle Technical Support. Microwave Preheating Improves Iron Ore Grinding EfficiencyKnowledge Portal-7365-Microwave assisted reduction of iron,May 11, 2015· 1. Development of technology of microwave assisted beneficiation of iron ore fines/slimes using microwave-assisted reduction process. 2. Pilot plant studies and scaling up for commercial production with the help of an industrial partner. 3. Involvement and development of student teams at IIT Madras and IIT Kanpur with JSW R&D and NMDC. 4.

  • MICROWAVE VACUUM CARBOTHERMIC REDUCTION AND

    Microwave Vacuum Reduction Processing (MVRP) of a nickeliferous silicate laterite ore, followed by magnetic separation was performed. The variables investigated included: processing time, microwave power, system pressure, use of argon as an inert gas, charcoalCarbothermal Reduction of Iron Ore Applying Microwave,This paper presents the results of a study on carbothermal reduction of iron ore made under the microwave field in equipment specially developed for this purpose. The equipment allows the control of radiated and reflected microwave power, and therefore measures the microwave energy actually applied to the load in the reduction process. It also allows performing energy balances and

  • Carbothermal Reduction of Iron Ore Applying Microwave

    Composite pellets of iron ore and carbon were subjected to microwave radiation and the amount of microwave energy absorbed during carbothermal reduction was measured. Although only a Hunan Wise Microwave Technology Co.,Ltd Technical Support,Hunan Wise Microwave Technology Co.,Ltd provide high temperature microwave sintering, microwave thermal reduction, microwave muffle Technical Support. Microwave Preheating Improves Iron Ore Grinding Efficiency

  • Knowledge Portal-7365-Microwave assisted reduction of iron

    May 11, 2015· 1. Development of technology of microwave assisted beneficiation of iron ore fines/slimes using microwave-assisted reduction process. 2. Pilot plant studies and scaling up for commercial production with the help of an industrial partner. 3. Involvement and development of student teams at IIT Madras and IIT Kanpur with JSW R&D and NMDC. 4.MICROWAVE VACUUM CARBOTHERMIC REDUCTION AND ,Microwave Vacuum Reduction Processing (MVRP) of a nickeliferous silicate laterite ore, followed by magnetic separation was performed. The variables investigated included: processing time, microwave power, system pressure, use of argon as an inert gas, charcoal

  • Carbothermal Reduction of Iron Ore Applying Microwave

    This paper presents the results of a study on carbothermal reduction of iron ore made under the microwave field in equipment specially developed for this purpose. The equipment allows the control of radiated and reflected microwave power, and therefore measures the microwave energy actually applied to the load in the reduction process. It also allows performing energy balances and CN102212677A Method for sorting high-phosphorus iron ore,The invention relates to a method for refining iron and removing phosphorus from complex refractory high-phosphorus iron ore, in particular to a method for sorting high-phosphorus iron ore by combining microwave reduction roasting and low intensity magnetic separation, and belongs to the technical field of mineral processing, particularly iron ore beneficiation.

  • Novel Direct Steelmaking by Combining Microwave,

    Novel Direct Steelmaking by Combining Microwave, Electric Arc, and Exothermal Heating Technologies (Continued) The process is based on the capability of microwaves to heat the agglomerates to temperatures sufficiently high for the rapid reduction of the iron oxide component (crushed and ground iron ore) by the coal.Reduction of iron ore with coal by microwave heating (Book,Over 90% reduction of the iron ore can be achieved in about 10 minutes at temperatures about 1,000 C with 20% excess stoichiometric carbon in the mix. The reduction of iron ore with coal by microwave heating produces a pure, dust-free, and high Btu flue gas that can be used in related thermal operations.

  • Beneficiation studies of a difficult to treat iron ore

    Reduction roasting using conventional & microwave (MW) heating was attempted. • Both routes yield iron concentrates with ~ 63–64% Fe at ~ 85% weight recovery. • MW route is promising considering the requirement of less roasting time. • Lesser formation of fayalite in case of microwave Microwave assisted reduction of iron ore/slimes: An,Microwave assisted reduction of iron ore/slimes: An innovative and cost effective approach for dry beneficiation for maximization of iron recovery from low grade ores. Project Images. Image Caption:Design of proposed Pilot Plant Set-up for iron ore beneficiation using rotary kiln based microwave furnace. Web Abstract

  • Improvement in gold grade from iron-oxide mineral using

    Microwave heating is being developed as a potential thermal pre-treatment process, because of its unique advantages over the differences of ore minerals in absorbing microwaves. The aim of this study was to investigate the improvement in Au grade from iron-oxide mineral using reduction roasting and magnetic separation.Reduction of Microwave Irradiated Iron Ore Particles in CO,The effect of microwave (2.45 GHz) pre-treatment on the reduction of magneto-hematite ore particles in CO was investigated. It was found that the presence of magnetite in the ore has considerable effect on the microwave treatment and that the oxidation of the goethite, present in the ore, is obtained after the magneto-hematite grains are almost entirely oxidized to hematite.

  • Microwave Processing Using Microwave Technology to

    Sep 12, 2003· ‘Once we know what the thermal stresses are, we can then predict how the stress of the ore will change and what the likely affect of microwave treating at that power level will be.’ ‘As we are using irregular particles, we test at least 20 and take the mean to produce the graphs [shown in figures 1 and 2],’says Dr Keith JacksonEVALUATION OF THE HEATING OF THE IRON ORE USING,EVALUATION OF THE HEATING OF THE IRON ORE USING THE MICROWAVE ENERGY1. LEONARDO MARTINS DA SILVA2, DIMITRY BUBNOFF3, MARISA NASCIMENTO4, JOSÉ ADILSOM DE CASTRO 5.. ABSTRACT . The phosphorus in steels when found in