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MacSphere: The Reduction of Composite Iron OreCoal ...

MacSphere: The Reduction of Composite Iron OreCoal ...

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The Reduction of Composite Iron OreCoal Pellets to Liquid Iron: Authors: Adams, John Clifford: Advisor: Kay, Department: Metallurgy: Keywords: Metallurgy;Metallurgy: Publiion Date: Apr1978: Abstract:

An ironmaking process has been proposed in which composite iron orecoal pellets are smelted to produce liquid iron. Studies have determined the manner in which individual composite ...

Two Numerical Approaches – Explicit Finite Difference and ...

Two Numerical Approaches – Explicit Finite Difference and ...

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A twodimensional mathematical model of the reduction process in iron ore – coal composite pellet under axisymmetric heating is presented. Two numerical methods, explicit finite difference and finite control volume, for simulation of this model were developed and compared. The methods give very similar results. The explicit finite difference method is easier to impliment and modify. However ...

Analysis of the Carbothermic Reduction of Iron OreCoke ...

Analysis of the Carbothermic Reduction of Iron OreCoke ...

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Analysis of the Carbothermic Reduction of Iron OreCoke Composite Mixtures by Microwave Heating 3 Cobalt Kα radiation was used, with a wavelength of Å and scanning was performed in the range from 4 to 105°, with a goniometer speed of ° per step with a counting time of 1 second per step. The mineralogical composition of the iron ore samples used in this investigation is displayed ...

COMPUTER MODELLING Modelling the Reduction of an Iron Ore ...

COMPUTER MODELLING Modelling the Reduction of an Iron Ore ...

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Modelling the reduction of an iron orecoal composite pellet with conduction and convection in an axisymmetric temperature field. By Jingyu Shi and Eugene Donskoi. Sensitivity Analysis of a Model for Direct Reduction in Swelling Coal CharHematite Composite Pellets. By Eugene Donskoi. Appliion of the genetic algorithm to estimate the parameters related to the kinetics of the reduction of ...

Composite Iron Ore Reduction

Composite Iron Ore Reduction

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Insight of iron orecoal composite reduction in a pilot. Nov 01, 2019· Orecoal composite prepared by a typical lowgrade iron ore (silica: %; iron: %) was reduced by lignite at 960 °C for 35 min, and crud iron powder assaying % of total iron can be obtained with recovery of % by subsequent magnetic separation based on laboratory tests. Kinetics and Mechanism of Reduction ...

Reduction Kinetics of SelfReducing Pellets of Iron Ore

Reduction Kinetics of SelfReducing Pellets of Iron Ore

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as carboniron ore composite or selfreducing pellets (SRP).1, 2 A selfreducing pellet (SRP) consists of iron ore fines and solid carbonaceous reducing agents like coal, coke and charcoal.

Behaviour of iron ore–fuel oil composite pellets in ...

Behaviour of iron ore–fuel oil composite pellets in ...

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18/07/2013 · The nonisothermal reduction of composite pellets in N 2 atmosphere showed the presence of an incubation period at initial reduction stages. The low intensity magnetic separation technique was applied with the aim of increasing the iron content at the expense of associated impurities. The magnetic and nonmagnetic fractions were analysed and the overall recovery was determined.

Direct reduced iron

Direct reduced iron

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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) into iron by a reducing gas or elemental carbon produced from natural gas or ores are suitable for direct reduction. Direct reduction refers to solidstate processes which reduce iron oxides to metallic iron at temperatures below the melting ...

Reduction and sintering of fluxed iron ore pellets

Reduction and sintering of fluxed iron ore pellets

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composite iron ore pellets. A brief summary of an ongoing investigation on such pellets is also presented. Thermodynamic aspects of reduction Reduction of iron ore Thermodynamically, the reduction of iron oxide occurs in steps. Of all the iron oxides, hematite is the richest naturallyoccurring form. Accordingly, the following stable iron oxides

Tumbler Index

Tumbler Index

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Study of Reduction Behaviour Of Iron Ore Lumps. with Tumbler Index Apparatus. The Tumbler Index is a relative measure of the resistance of the material to breakage or degradation by impact. (ii) Abrasion Index: It is a relative measure the degradation of iron ore by abrasion. The Tumbler Index and Aibrasion Index are determined in a tumbler ...

Prospects for Coalbased Direct Reduction Process

Prospects for Coalbased Direct Reduction Process

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iron ore fines, steel mill waste and noncoking coal. This paper outlines the features and development status of Kobe Steel's coalbased reduction processes, each employing an RHF for reducing carbon composite agglomerates. Also described is the role of these processes in resolving the issues faced by the steel industry,, securing raw materials and preserving the environment. 1. Features ...

Ore reduction | Article about ore reduction by The Free ...

Ore reduction | Article about ore reduction by The Free ...

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The following main results were obtained: (1) the gasifiion reaction rate of biomass char is faster than that of coke in a couple of dozen times; (2) the reduction of the composite begins at about 550[degrees]C, and the reactivity of the carbon iron ore composite with biomass char is remarkably faster than that with coke; and (3) the reaction rate of carbon iron ore composite with highly ...

Reduction of iron ore/empty fruit bunch char briquette ...

Reduction of iron ore/empty fruit bunch char briquette ...

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Abstract. Utilization of Malaysian low grade iron ore is an attractive option of domestic iron resource; however, extra energy consumption is required and thus contributes to gree

The Reduction of Composite Iron OreCoal Pellets to Liquid ...

The Reduction of Composite Iron OreCoal Pellets to Liquid ...

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The Reduction of Composite Iron OreCoal P~s to Liquid Iron ~} TI TLE: / I SUPERVISOR: Professor Kay NUMBER OF PAGES: xiv, 257 (. " ii. slag and iron. I! / / ABSTRACT Orecoal pellets which were made selffluxing, ' pellets bonded with bentonite, cement or calcium carbonate. Orecoal pellets bonded with bentonite reacted to form a fayalitetype slag high in iron oxide content and ...

Reduction of ironoxidecarbon composites: part III ...

Reduction of ironoxidecarbon composites: part III ...

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15/12/2008 · Reduction of ironoxidecarbon composites: part III. Shrinkage of composite pellets during reduction

Carbothermal Reduction of Iron Ore in Its Concentrate ...

Carbothermal Reduction of Iron Ore in Its Concentrate ...

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01/01/2018 · Takyu et al. [13] tried to understand the reduction mechanism of iron ore and carbon composite by volatile matters in biomass char at low temperature. The iron ore and carbon composite were heated at a constant rate to 1473 K, and the CO and C[] concentrations in waste gases were analyzed by an infrared absorption analyzer. It was found that the reduction degree at 1100 K .

reduction of iron ore

reduction of iron ore

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Oct. 19, 1954 K. J. NELSON PARTIAL REDUCTION OF IRON ORE 2 SheetsSheet 1 Filed Sept. 9, 1950 Gnzoum: One. 7 l G a t a e E a 6 w e o M 9 m v Inquire Now .

Effect of Iron ore and coal properties on reduction and ...

Effect of Iron ore and coal properties on reduction and ...

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Four kinds of carbon composite iron briquettes were prepared in combination with two iron ores (hematite ore, magnetite ore) and two coals (high fluidity coal, low fluidity coal). The gasifiion rates and reduction rates of the samples contain high fluidity coal were faster than those of the samples contain low fluidity coal because of the better adhesiveness between iron ore and coal. The ...

composite iron ore reduction

composite iron ore reduction

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Smelting reduction of iron orecoal composite pellets has been carried out in an induction furnace. The pellets, tied with tungsten wire, were immersed into the liquid metal bath. the effectsof reduction parameter to composite peletof. The ratio of iron ore to coal in the composite pellet is 1 to 1. The reduction process temperatures are 500 o C, 700 o C and 900 o C. The reduction time is 25 ...