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limestone iron ore sintering
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A new disposal method for white mud: Replacing limestone in iron ore …
The pulp production process generates a CaCO 3-rich solid waste known as white mud (WM), and its improper disposal is a cause for global concern.The present study investigates the composition, microstructure, and thermal decomposition characteristics of WM and proposes a strategy for replacing limestone with WM for iron ore sintering.
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Influence of Limestone Types on Iron Ore Sintering
It is possible to substitute all the iron ore (26.35–125.42 kg/t) and part of the limestone (34.40–160.02 kg/t) with increasing amounts of steel slag (from 43.04 to 202.26 kg/t).
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A new disposal method for white mud: Replacing limestone …
The review covers changes in iron ore sources, resources of coking coal, coal supply, limestone, iron ore sinter and sintering machines, iron ore pellets and …
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A new disposal method for white mud: Replacing limestone in iron ore …
DOI: 10.1016/j.jenvman.2023.119331 Corpus ID: 264454972; A new disposal method for white mud: Replacing limestone in iron ore sintering. @article{Meng2023AND, title={A new disposal method for white mud: Replacing limestone in iron ore sintering.}, author={Hanxiao Meng and Jiankang Wang and Lei Zhang and Kelang Jin and Xiang …
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Comprehensive Effect of Coke Breeze and Limestone
For the sintering of a coarse hematite iron ore, it was found that the optimum mean particle size combination of coke breeze and limestone was 1.71mm and 1.55mm in the sinter mix.
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Combustion behavior of granulated coke breeze in iron ore sintering
The raw materials for iron ore sintering, including iron ore, return fine (−5 mm sinter), fluxes (limestone, dolomite, quicklime) and coke breeze, were taken from a sintering plant of Baosteel, China. The chemical compositions and size distributions of iron ore, return fine and fluxes are shown in Table 1.
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Partial substitution of anthracite for coke breeze in iron ore sintering
The iron ore sintering process is one of the vital steps -in an integrated steelmaking chain, the goal of which is to agglomerate iron ore fines into porous sinters with a high mechanical strength ...
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Basics of Iron Ore Sintering
In iron making process, sintering of iron ore fines is an integral step to utilize not only the ore fines but also to introduce a part of flux (limestone and dolomite) along …
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A new disposal method for white mud: Replacing limestone …
Therefore, replacing limestone with calcium-rich solid waste as a flux for iron ore sintering is a promising approach to achieve large-scale environmentally benign …
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A new disposal method for white mud: Replacing limestone in iron ore …
Iron ore sinter constitutes more than 70% of the BF ferrous feed, Sintering normally uses iron-ore fines, fluxes (limestone, dolomite), return fines, coke breeze and metallurgical waste as raw ...
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Recent advances in iron ore sintering
Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. ... Recent advances in iron ore sintering. L. Lu [email protected] and O. Ishiyama View all authors ... Takeda, K., and Fujii, N. 2008. Development of new coating granulation technology of limestone and coke breeze. JFE ...
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Sintering: A Step Between Mining Iron Ore and …
Learn how sintering converts fine-sized raw materials, including iron ore, into an agglomerated product, sinter, for blast …
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Reductants in iron ore sintering: A critical review
Mill scale made up 5 % of the sinter mixture, which also included 95 % high barite iron ore concentrate, limestone, sinter return, and 12 % moisture. The combination was designed to contain sinter return. ... Iron ore sintering accounts for 13 % of CO 2 emissions. Pelletization and coke are making account for 7 % of the emissions.
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Examining low nitrogen oxides combustion in iron ore sintering
Iron ore sintering is distinguished by its combustion process, directly exposing the raw blends to the flame. ... Though fresh CaO can be obtained rapidly by the decomposition of limestone in the preheat zone, this process occurs in a low-temperature oxidizing atmosphere, which can impede the desired reduction of NOx emissions. Additionally ...
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Effect of ore types on high temperature sintering …
Table 1 lists the chemical composition of the iron ores and limestone used in the present study. The ores were sourced from different mines around the world with distinct chemical compositions and geological characteristics. Ore 1 was a typical Brazilian hematite ore containing relatively high Fe and low SiO 2 and LOI1000 contents. Ore 2 …
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Iron Ore Sintering: Raw Materials and Granulation
Sintering is an agglomeration process that fuses iron ore fines, fluxes, recycled products, slag-forming elements and coke. The purpose of sintering is to obtain a product with suitable ...
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A clean disposal method of carbide slag with carbon …
Limestone or quicklime is a necessary flux in the iron ore sintering process. Its production and application process will cause CO 2 emissions and various environmental pollution, but this has not attracted enough attention. Carbide slag (CS) is a calcium-rich solid waste produced in acetylene production, the harmless disposal of which is still …
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Iron ore sintering
Learn about the sintering process of iron ore fines for blast furnace use, the key steps of granulation and thermal densification, and the effects of ore characteristics …
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Effects of Particle Size of Coke on Iron Ore Sintering Process …
Coke breeze is the main heat source in sintering process. Its combustion yields enough amounts of heat which melts the sinter mix. One of the factors that significantly affect the course of coke breeze combustion is its grain size [1,2,3].It is known that fine-grained coke reduces permeability of the sinter mix and the use of coke breeze …
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Iron Ore Sintering: Raw Materials and Granulation
ABSTRACT. Sintering is an agglomeration process that fuses iron ore fines, fluxes, recycled products, slag-forming elements and coke. The purpose of sintering is to obtain a product with suitable composition, quality and granulometry to be used as burden material in the blast furnace.
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Iron ore sintering
Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. In this chapter, the sintering process is first described to identify the key ...
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Effect of Silica Content on Iron Ore Sintering
During the iron ore sintering process, its SiO2 content considerably affects the sinter quality. In this study, the effect of SiO2 content on iron ore sintering indexes was studied, with mineral composition and microstructure analyses. It was shown that the strength and reducibility of sintering products improved when SiO2 content increased. …
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Sinter Plant Operations: Raw Materials | SpringerLink
This chapter introduces the common materials used in iron ore sintering and the handling procedures in an integrated steelworks. It covers iron ores, fluxes, fuels, …
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Dioxins control as co-processing water-washed municipal solid …
The following advantages are mainly realized in iron ore sintering process to treat MSWI-FA: (1) ... dolomite and limestone were used to adjust the basicity (CaO/SiO 2, mass ratio) and MgO of sinter, with its purpose to meet the requirements of slagging process during iron making process. Sintering is a high temperature process, and the …
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(PDF) Iron Ore Sintering: Process
Sintering is a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, slag-forming agents and solid fuel (coke).
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Iron Ore Sintering
Iron ore sintering is the iron ore powder agglomeration process that changes fine iron ore powder into the lumpy iron-bearing raw material used for blast furnace ironmaking. ... concentrate powder), flux (limestone, dolomite, quicklime, etc.), fuel (coke powder and anthracite), additives (roll scale and some recycled materials), return ore in ...
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The Effect of Adjusting Sinter Raw Mix on Dioxins from Iron Ore …
The inhibition effect of calcined lime (CaO) and limestone (CaCO3) on the formation of dioxins during iron ore co-sintering with fly ash was investigated in a sinter pot in the present work. Experimental results indicated that international total toxicity equivalent concentration of dioxins decreased from 1.4335 to 0.2922, 0.1048, 0.4562, …
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Iron Ore Sintering Process in Steel Manufacturing
High-quality iron ore sintering process is ensured with advanced equipment from Thermo Scientific for all aspects of iron and steel production and manufacturing. ... Sinter is created by mixing iron ore concentrate with several additives such as limestone and silica to control the chemistry and then igniting it at 1200°C in a continuous belt ...
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Recent advances in iron ore sintering
Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. Owing to the depleting reserves of traditional …
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Sinter Plant Operations: Raw Materials | SpringerLink
The chemical formula of limestone is CaCO 3; it is used in lime production and iron ore sintering. Limestone can be classified as primary sedimentary limestone and re-crystallized marble limestone . Primary sedimentary limestone is known as reef limestone with relict fossil (commonly shell or coral reel) and porous texture. A strong …
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Sintering: Most Efficient Technologies for Greenhouse …
Iron ore sintering is the second most energy-consuming process in iron marking, and the main energy consumption comes from the combustion of carbon (Hu et al. 2019). Coke breeze is intimately mixed with moistened ore fines, limestone/dolomite, and industrial wastes like flue dust, return fines, LD slag, LD sludge, etc. In the first stage of …
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Iron ore sintering
The sintering process begins with preparation of a sinter mixture consisting of iron ore fines, fluxes, solid fuel (called bonding agents in Japan) such as coke breeze, and return fines from the sinter plant as well as recycled ferruginous materials from downstream iron and steelmaking processes.
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The effects of kinetic parameters on combustion …
The iron ore sintering process to produce improved blast-furnace charge is the main part of blast-furnace load preparation at modern iron making throughout the world. In the iron ore sintering process, a raw mix of iron ore, coke, limestone and moisture are charged on a moving grate and form a bed of 40–60 cm height. Hot gas jets from the ...
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Iron ore sintering
Like other sintering processes, iron ore sintering converts iron ore fines of often − 8 mm sizing into larger agglomerates, namely, sinter, between 5 and 50 mm particle size, which possess the physical and metallurgical characteristics and gas permeability required for efficient blast furnace operation.As shown in Figure 14.1, iron ore sintering …
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Limestone – Its Processing and Application in Iron and
Application of limestone and lime in iron and steel plant. During the production of iron by blast furnace (BF) route, limestone is added either in the process of sintering or as a direct feed in the blast furnace. Limestone is normally added during ironmaking for obtaining either neutral or slight basic BF slag.
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(PDF) Iron ore sintering. Part 1. Theory and practice of the sintering
Iron ore sintering. Part 1. Theory and practice of the sintering process. August 2013; Dyna (Medellin, Colombia) 80(180):152 ... of the ore fi nes with limestone. It has been shown that .