Behaviour Of Iron During Reduction Of Slag

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(PDF) Behaviour of iron during reduction of slag obtained ...

Behaviour of iron during reduction of slag obtained from copper flash smelting. ... The article presents an analysis of results of the r esearch on behaviour of iron in the course of slag .

BEHAVIOUR OF IRON DURING REDUCTION OF SLAG …

G. SIWIEC et al.: BEHAVIOUR OF IRON DURING REDUCTION OF SLAG OBTAINED FROM COPPER FLASH SMELTING As shown in previous studies [14-15], intensifica-tion of iron oxide reduction does not take place until the copper content in the slag id decreased to less than 0,6 %mass, which was successfully confirmed by the obtained results.

Growth behavior of iron grains during deep reduction of ...

May 01, 2020· The growth kinetic model of metallic iron grains during the deep reduction of copper slag is described as D 1.424 = 20839.38 exp − 116.17 × 10 3 RT t for ranges ~1423–1573 K and ~30–180 min, where D denotes the granularity of the metallic iron phase at reduction time t (min) and reduction temperature T (K).

BEHAVIOUR OF IRON DURING REDUCTION OF SLAG OBTAINED …

As a result, a Cu-Pb-Fe alloy is obtained and subjected to the converting process along with waste slag which contains ca. 0,5 % mass Cu. The article presents an analysis of results of the research on behaviour of iron in the course of slag reduction where diverse fine-grained carbon-bearing materials function as reducers

Behaviour of iron during reduction of slag obtained from ...

Behaviour of iron during reduction of slag obtained from copper flash smelting . By G. Siwiec, M. Sozańska, L. Blacha and A. Smalcerz. Get PDF (197 KB) Abstract. In a technological process of copper production in the flash smelting furnace, slags with high metal contents, such as copper, lead and iron, are generated. ...

Slag Formation during Reduction of Iron Oxide Using ...

The aim of this work was to study the slag formation during the reduction process and the reduction behaviour of iron oxides. Furthermore the reduction behaviour of iron ore during continuous feeding was assessed. Mixtures of iron ore and calcined lime with a basicity of 0, 0.8, 1.6, 2.3, and 2.9 were melted and reduced by hydrogen.

Reduction Behaviour of BOF Slags by Carbon in Iron ...

Request PDF | Reduction Behaviour of BOF Slags by Carbon in Iron | Experiments were carried out in a system with BOF slags from industrial operations in order to optimize the conditions of ...

Minor-Element Behavior and Iron Partition During the ...

A mathematical model has been developed to describe the reduction process and the minor-element behavior during the cleaning of copper converter slag under equilibrium conditions. The results of simulation show that large fractions of Pb, Bi, Sb and As, but little of …

Effect of Basicity on the Reduction Behavior of Iron Ore ...

Mar 22, 2018· Physicochemical properties of the iron ore pellets depend on the iron oxide concentrate, gangue content and the amount of fluxes added. The objective of this present work is to study the reducibility as well as the softening–melting behavior of the iron ore bearing fines (mainly containing hematite) pellet with lime to silica ratio (C/S) varying from 0.9 to 2.4 in the temperature range of ...

Influence of Reduction Temperatures on Reduction of FeO ...

[9] V. Sahajwalla, M. Rahman, L. Hong, N.S. Chaudhury, Influence of carbonaceous materials on slag foaming behavior during eaf steelmaking, Iron and Steel Technology, (2006) 54-63. [10] J.R. Dankwah, Reduction of FeO in EAF steelmaking slag by end-of-life polystyrene and it's blend with metallurgical coke, International Journal of Engineering ...

Behaviour of iron during reduction of slag obtained from ...

Behaviour of iron during reduction of slag obtained from copper flash smelting . By G. Siwiec, M. Sozańska, L. Blacha and A. Smalcerz. Get PDF (197 KB) Abstract. In a technological process of copper production in the flash smelting furnace, slags with high metal contents, such as copper, lead and iron, are generated. ...

Behaviour of iron during reduction of slag obtained from ...

Behaviour of iron during reduction of slag obtained from ...

Slag Formation during Reduction of Iron Oxide Using ...

The aim of this work was to study the slag formation during the reduction process and the reduction behaviour of iron oxides. Furthermore the reduction behaviour of iron ore during continuous feeding was assessed. Mixtures of iron ore and calcined lime with a basicity of 0, 0.8, 1.6, 2.3, and 2.9 were melted and reduced by hydrogen.

Growth behavior of iron grains during deep reduction of ...

Article “Growth behavior of iron grains during deep reduction of copper slag” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas. By linking the information entered, we provide opportunities to make unexpected discoveries and ...

Minor-Element Behavior and Iron Partition During the ...

A mathematical model has been developed to describe the reduction process and the minor-element behavior during the cleaning of copper converter slag under equilibrium conditions. The results of simulation show that large fractions of Pb, Bi, Sb and As, but little of …

Rate of Reduction of Cr 2O 3 in Slag by Liquid Iron ...

3-1. Explanation of the behavior of chromium and carbon in liquid iron During the reduction reaction, the slag foaming due to the CO gas evolution was observed frequently, and it was confirmed that the higher initial carbon content in liquid iron was, the more intensively CO gas evolved. The reduction rate of Cr2O 3 is relatively fast, so that

Characterisation of iron ore sinter and its behaviour ...

Abstract. Egyptian iron ore sinter with low contents of barite (0·5 wt-%BaO) and alumina (0·7 wt-%Al 2 O 3) was prepared by the down draft sinter pot technique and physically and chemically characterised.The sinter is mainly composed of unassimilated hematite, precipitated hematite and magnetite phases and glassy calcium silicate (slag).

Effect of Basicity on the Reduction Behavior of Iron Ore ...

Mar 22, 2018· Physicochemical properties of the iron ore pellets depend on the iron oxide concentrate, gangue content and the amount of fluxes added. The objective of this present work is to study the reducibility as well as the softening–melting behavior of the iron ore bearing fines (mainly containing hematite) pellet with lime to silica ratio (C/S) varying from 0.9 to 2.4 in the temperature range of ...

Reaction Behavior of Iron Minerals and Metallic Iron ...

Feb 04, 2013· The reaction behavior of iron minerals and growth of metallic iron particles in coal-based reduction of an oolitic iron ore were investigated by X-ray diffraction (XRD) and scanning electron microscopy/enegry dispersive spectroscoy (SEM/EDS), respectively. The results show that, the reduction of iron minerals occurred in the sequence of Fe2O3 → Fe3O4 → FeO → Fe. During the reduction…

Influence of Reduction Temperatures on Reduction of FeO ...

[9] V. Sahajwalla, M. Rahman, L. Hong, N.S. Chaudhury, Influence of carbonaceous materials on slag foaming behavior during eaf steelmaking, Iron and Steel Technology, (2006) 54-63. [10] J.R. Dankwah, Reduction of FeO in EAF steelmaking slag by end-of-life polystyrene and it's blend with metallurgical coke, International Journal of Engineering ...

Migration Behavior of Components in Converter Slag during ...

Migration Behavior of Components in Converter Slag during ... condition during the reduction process. Furthermore, the reduced product including the iron-base metal without car-bon and the CaO–Al 2O 3–SiO 2 system slag was high added-value.16,17) Considering few works reported on reduction

Mineral Reactions and Slag Formation During Reduction …

to avoid sticking and improve gas permeability during the solid state reaction of iron ore pellets to iron. 1.1 Aims of Study The aims of this thesis are to: (i) describe the olivine reactions during reduction in the blast furnace, (ii) compare phases found in fast cooled probed pellets and slow cooled excavated pellets from the EBF, and (iii)

Reduction and Dissolution Behaviour of Manganese Slag in ...

The reduction and liquidus behaviour of manganese slag with different basicities were studied in non-isothermal experiments in the temperature range of 1400–1500 °C. Certain amounts of quartz were added to Assmang ore (South Africa), and lime was added to Comilog ore (Gabon), to adjust the charge basicity to 0.5, 0.8 and 1.2. The extent of manganese ore reduction as a function temperature ...

Reduction swelling behaviour of iron ore pellets

• The dynamic swelling of iron ore pellets in a simulated blast furnace atmosphere is considerably more restrained than the corresponding static swelling. Thus, the reduction swelling behaviour of iron ore pellets should preferably be studied DYNAMICALLY under simulated blast furnace conditions to obtain the most realistic results.

Behaviour of iron during reduction of slag obtained from ...

Behaviour of iron during reduction of slag obtained from ...

The Formation and Influence of the Slag Phase During the ...

Influences of the Slag Phase During Reduction 2.4.1 Degradation at Low Temperatures 2.4.2 Retardation of Reduction by Slag Phase 2.4.3 Softening Behaviour 2.4.4 Meltdown Behaviour CHAPTER 3: EXPERIMENTAL DESIGN AND EQUIPMENT 3.1 3.2 Experimental Design 3.1.1 Time-Temperature Conditions 3.1.2 Time-Ga~ Com~)"ition condit£ons.

Mineral Reactions and Slag Formation During Reduction …

to avoid sticking and improve gas permeability during the solid state reaction of iron ore pellets to iron. 1.1 Aims of Study The aims of this thesis are to: (i) describe the olivine reactions during reduction in the blast furnace, (ii) compare phases found in fast cooled probed pellets and slow cooled excavated pellets from the EBF, and (iii)

Rate of Reduction of Cr 2O 3 in Slag by Liquid Iron ...

3-1. Explanation of the behavior of chromium and carbon in liquid iron During the reduction reaction, the slag foaming due to the CO gas evolution was observed frequently, and it was confirmed that the higher initial carbon content in liquid iron was, the more intensively CO gas evolved. The reduction rate of Cr2O 3 is relatively fast, so that

Predictedeffect of orecompositionon slag formationin ...

reduction, in contrast with production of iron in bath smelters, where the slag phase supports rapid reduction of iron oxide. The rate-limiting effect of liquid slag formation in MnO reduction was also confirmed by work on reaction of composite pellets (consisting of manganese ore and coal), at a temperature of 1600uC:

CHARACTERIZATION OF PROPERTIES AND REDUCTION …

these iron ores. The observations made during this study are discussed below. 3.2.1 Effect of time on degree of reduction Data listed in Table 3 (rapid heating) indicate that the reduction time has an approximately identical effect on the reduction behaviour of almost all the iron ore pellets studied.

Mineral Reactions and Slag Formation During Reduction of ...

Iron reduction and the deformation of the pellets were enhanced in the zone of high alkali deposition. Thin sections of pellet samples were prepared to distinguish amorphous and crystalline slag phases for a better understanding of the formation of the potassium rich slag. Olivine breaks down to various extents to form a SiO 2-FeO-MgO-K 2 O glass.

Types of iron and steel slag : NIPPON SLAG ASSOCIATION

Approximately 110 kg of slag is generated for each ton of converter steel. Electric arc furnace slag Electric arc furnace slag is generated when iron scrap is melted and refined. It consists of oxidizing slag that is generated during oxidation refining, and reducing slag that is generated during reduction …

Influence of Reduction Temperatures on Reduction of FeO ...

[9] V. Sahajwalla, M. Rahman, L. Hong, N.S. Chaudhury, Influence of carbonaceous materials on slag foaming behavior during eaf steelmaking, Iron and Steel Technology, (2006) 54-63. [10] J.R. Dankwah, Reduction of FeO in EAF steelmaking slag by end-of-life polystyrene and it's blend with metallurgical coke, International Journal of Engineering ...

Reduction swelling behaviour of iron ore pellets

• The dynamic swelling of iron ore pellets in a simulated blast furnace atmosphere is considerably more restrained than the corresponding static swelling. Thus, the reduction swelling behaviour of iron ore pellets should preferably be studied DYNAMICALLY under simulated blast furnace conditions to obtain the most realistic results.

Influence of composition of slag and carbonaceous ...

Study of slag/char interactions is essential to understand the behaviour of unburnt char within a blast furnace during pulverised coal injection. While slag/carbon reaction kinetics have been reported in the literature, limited work is reported on study of the wetting behaviour in these systems.

Analysis of Slag Flow in Blast Furnace during the ...

behaviour is an important parameter to evaluate the effectiveness of the B.F. slag. Fusion behaviour is described in terms of four characteristic temperatures; IDT, the initial deformation temperature symbolising surface stickiness, important for movement of the ... influenced by the extent of reduction of iron oxide at low temperature (in the ...

Numerical Analysis on Flow Behavior of Molten Iron and ...

Jan 01, 2017· 2.2. Conservation Equation. For conservation equations, the following assumptions were made: (1) the chemical reaction [23], thermal radiation [24], and Marangoni effect [25] are ignorable; (2) air, iron, and slag are incompressible fluid [26]; (3) the interface of iron-slag in the taphole was kept as a horizontal surface, and slag was floated on iron because of lighter density; (4) the ...

Reduction behavior of chromium oxide in molten slag using ...

The reductions of FeO and CrO(x) by aluminum were promoted to the lower part of slag with the increase in temperature and CaO/SiO2 ratio because of the increase in fluidity of slag. A liquid metal containing chromium was formed and precipitated on the bottom of slag during the reduction.