Utilization of Hydrated Lime as Binder and Fluxing …
of the pellet feed also have significant influence on the qual-ity of green and indurated pellets. The pellet feed mainly comprises the iron ore concentrates, binder and suitable additives like anthracite (or coke breeze) and fluxing agents. In general, the types of pellets can be mainly divided into acid, fluxed and basic pellets according to ...
Characterisation studies on swelling behaviour of iron ore pellets
The formation of the melting slag phase disturbs the structure of the pellet and increases the R.D.I., as the Iron Ore No.2 pellets slag phase is higher than Iron Ore pellets, corresponding ...
Effect of Limestone and Dolomite Flux on the Quality of …
The present work illustrates the effect of limestone and dolomite as flux material in pelletization of an Indian goethetic-hematite iron ore with 59.75% Fe, 4.52% …
Evolution of Structure and Metallurgical Properties of Iron Ore Pellets
The production of magnesia pellets is developing in mining enterprises, especially in the context of tightening environmental standards and a decrease in sinter production. In the course of the work, it was determined that from the peculiarities of pellet structure formation, the dolomite influence is manifested in a change in both the thermal …
Effects of Pellet Basicity on the Simulated Deposit Formation …
Deposit formation in the coal-fired rotary kiln is frequently found in the production of fluxed iron ore pellets by the grate-kiln process and affects normal production. In this paper, the effects of pellet basicity (CaO/SiO2 mass ratio) on the simulated deposit formation were investigated. The results show that the porosity of deposits samples increases from 30.8 …
Effect of adding limestone on the metallurgical properties of iron ore …
DOI: 10.1016/J.MINPRO.2015.06.004 Corpus ID: 92937471; Effect of adding limestone on the metallurgical properties of iron ore pellets @article{Iljana2015EffectOA, title={Effect of adding limestone on the metallurgical properties of iron ore pellets}, author={Mikko Iljana and Antti Kemppainen and Timo S. Paananen and Olli-Pekka Mattila and Erkki Pisil{"a} …
Utilization of Lime Fines as an Effective Binder as well as Fluxing …
Indian iron ore fines with high alumina content (~2.5% Al2O3) resulted in poor quality pellets and a study was under taken to establish suitable pellet chemistry through proper fluxing agents. Limestone fluxed pellets were prepared at varying basicity (0 to 0.8) and pyroxenite fluxed pellets at varying MgO contents (0 to 3%) to study their ...
Physical Characterization and Kinetic Analysis of the Iron Ore Pellets
The technical viability of the marble waste as raw material in the iron ore pelletizing sector was investigated. The effects of binary basicity (0.15 to 0.45), fixed carbon (0.5 to 1.1 wt pct), and bentonite percentages (0.5 to 0.7 wt pct) on the pellet properties were also investigated. The physical properties of the pellets were …
Iron Ore Pelletizing Process: An Overview
The iron ore pelletizing process consists of three main steps: 1. Pelletizing feed preparation and mixing: the raw material (iron ore concentrate, additives anthracite, dolomite and binders are prepared in terms of particle size and chemical specifications, dosed, and mixed together to feed the pelletizing process; 2.
On the Formation of Porosity in Fluxed Iron-Ore Pellets
Keywords: metallurgical properties, pellets, porosity, reducibility, strength, fluxes DOI: 10.3103/S0967091222090133 Technical and economic indicators of iron smelt-ing can …
Pellet Plant | Atibir Industries Company Limited | Steel …
Iron Ore Pellets are formed from beneficiated or run of mine iron fines. The iron is usually ground to a very fine level and mixed with limestone or dolomite as a fluxing agent and bentonite or organic binders as a binding agent. If the ore is a Hematite ore, coke or anthracite coal can be added to the mix to work as an internal fuel to help ...
Effect of Fluxing Agents on the Quality and
The present work illustrates the effect of limestone and dolomite as flux material in pelletization of an Indian goethetic-hematite iron ore with 59.75% Fe, 4.52% SiO2, 3.84% Al2O3, and 4.85% LOI.
Features of the Iron Ore Pellets Structure Depending on the …
This paper summarizes the data of pellet studies conducted by Torex LLC in the period 2014–2022 and partially published in [12–14]. In particular, a comparison was made of the analysis of the pellets structure from magnetite concentrates with a SiO 2 content of 2.5–4.0% (sample 1), 4.5–6.0% (sample 2) and 6.5–8.3% (sample 3) in the …
Evolution of Structure and Metallurgical Properties of …
of pellets produced from magnetite concentrate of fer-ruginous quartzites of the Mikhailovsky iron ore deposit. Laboratory research results [4, 15, 16] showed that the use of magnesia flux (dolomite) can improve the compressive strength of oxidized pellets. This article is devoted to the study of the process of pellet formation
Effect of adding limestone on the metallurgical properties of …
In order to produce high-quality pellets with good reducibility and superior softening and melting properties, certain additives are important. One of the most …
Utilization of Lime Fines as an Effective Binder as well as Fluxing …
The results show that the self-fluxing pellet and porous lump ore with high aluminium content caused the Al2O3 content of comprehensive burden to raise 0.26% compared to acid pellet and dense lump ...
Effect of fluxing agents on the swelling behavior of hematite pellets …
Volumetric expansion of iron ore pellets takes place during their reduction from hematite to magnetite and wüstite. It can be mainly attributed to the increased volume requirements for the anisotropic growth of magnetite (111) planes parallel to the hematite (0001) planes (Frazer et al., 1975). Swelling is related to the ability of gangue or ...
Utilization of Hydrated Lime as Binder and Fluxing Agent for …
The present work investigates the manufacture of high basicity (CaO/SiO2 = 1.45) magnesium containing fluxed pellets with hydrated lime used as binder and fluxing agent. The fired pellets and lump ...
The relationship between basicity and swelling on reduction of iron-ore
Effect of high basicity on compressive strength and microstructure of iron ore pellets containing TiO2. A laboratory study is carried out to characterize the effect of basicity (varying 1.5–3.5) on magnetite iron ore pellets containing TiO2 (content 5%). Green pellets are made by the laboratory scale….
Iron Ore Pellets – IspatGuru
The term iron ore pellet refers to he thermally agglomerated material formed by heating a variable mixture of iron ore, limestone, olivine, bentonite, dolomite, and miscellaneous iron bearing …
Evolution of Structure and Metallurgical Properties of Iron Ore Pellets
Evolution of Structure and Metallurgical Properties of Iron Ore Pellets When Fluxing with Dolomite, JSC Mikhailovsky GOK Named after A.V. Varichev November 2020 Steel in Translation 50(11):788-794
Effect of pellet basicity and MgO content on the quality and
Section snippets Experimental. The following materials were used for preparing the green pellets: iron ore fines (− 10 mm size); bentonite (− 75 microns); anthracite coal (− 10 mm); limestone (− 50 mm), dolomite (− 50 mm) and pyroxenite (− 50 mm).Iron ore fines, coal, limestone, dolomite and pyroxenite were ground separately in …
Effect of adding limestone on the metallurgical properties of iron ore …
In order to produce high-quality pellets, certain additives are important. The most common fluxing materials for iron ore pellet production are limestone (CaCO 3), dolomite ... Chemistry, microstructure, and reduction characteristics of dolomite-fluxed magnetite pellets. Metall. Trans. B, 11 (2) (1980), pp. 233-243. View in Scopus Google ...
Effect of fluxing agents on reduction degradation
The pellet making process parameters such as compo- sition of pellets, grain size of iron ore fines, treatment conditions etc. have been optimized through physical characterization like cold ...
CO 2 -Free Flux for Sustainable Iron Ore Pelletizing
In recent years, the percentage of iron ore pellets in blast furnaces has increased due to its uniform size, good reducibility, and high tumbler index. Pelletizing is …
Iron ore pelletizing
The iron is usually ground to a very fine level and mixed with limestone or dolomite as a fluxing agent and bentonite or organic binders as a binding agent. If the ore is a …
THE GROWING IMPORTANCE OF PELLETIZING FOR IRON ORE MINING AND IRON
The binder is an important additive widely applied in pelletizing iron ore concentrates, making iron ore pellets available as feedstocks for blast furnace ironmaking or direct reduction processes ...
Porosity of Iron-Ore Pellets at Different Stages of Roasting …
The goal of this work is to analyze changes in the porosity of iron-ore pellets during their lifecycle, from pelletizer to full reduced state. ... S.N., Petryshev, A.Yu., Pigarev, S.P., and Pokolenko, A.Yu., Evolution of structure and metallurgical properties of iron ore pellets when fluxing with dolomite, JSC Mikhailovsky GOK named after A.V ...
Effect of Adding Limestone on the Metallurgical …
In general, the main types of pellets for the purposes of making iron are acid, basic and fluxed. In order to produce high-quality pellets, certain additives are important. The most common fluxing materials for iron ore pellet production are limestone (CaCO 3), dolomite (Ca,Mg(CO 3) 2) and olivine (Mg 2 SiO 4), but sometimes magnesite (MgCO 3 ...
Effect of fluxing agents on the swelling behavior of hematite pellets …
The following materials were used for preparing the green pellets: iron ore fines, bentonite, anthracite coal, limestone, pyroxenite and magnesite. ... the addition of fluxing agents to achieve good mechanical strength and metallurgical properties of the fired hematite pellets [9–14]. Fluxing agents are the main source of basic oxides in the ...