During the sintering process, sinter fuels are commonly used to provide the required energy. The coke breeze comes from coking plant (typically less than 3 mm in …

The used raw materials, including iron ore 1#, fluxes (i.e., limestone, dolomite, quartz and burnt lime), coke and two types of alumina additives (i.e., washed …

In the upper region of the blast furnace where temperature range from 600 to 700 C. the iron ore or iron oxide is reacts with the gaseous CO reductant to produce iron: Fe 2 O 3 (s) + 3CO(g) → 2Fe + 3CO 2 (g) Lower in the blast furnace where higher temperatures occur, the iron ore may react directly with the coke or carbon:

Fines cannot be used directly for the burden due to their lightweights and negative influence on the blast furnace process. (e.g., increasing pressure drop). With iron ore sintering, iron fines are utilizable for pig iron production. The sintering process is influenced extensively by the properties of the input material and process conditions.

different raw materials like iron ore fines, lime stone, dolomite, coke breeze and metallurgical waste in sinter machines. Sinter is a porous iron bearing material which is being charged in Blast furnace to produce Hot Metal. 80% of sinter requirement in Blast Furnace is fulfilled by 3nos of sinter machines.

The sintering process is a thermal agglomeration process, and it is accompanied by chemical reactions. In this process, a mixture of iron ore fines, flux, and coal particles is heated to about 1300 °C–1480 °C in a sinter bed.

World resources are estimated to be greater than 800 billion tons of crude ore containing more than 230 billion tons of iron. The only source of primary iron is iron ore, but before all that iron ore can be turned into steel, it must go through the sintering process. Sinter is the primary feed material for making iron and steel in a blast furnace.

The iron ore fines and concentrate cannot be directly utilized in blast furnace, and therefore, its agglomeration i.e. enlargement of particle size is necessary before it is used as feed for iron making. Sintering is one of the methods of agglomeration. All iron oxide bearing wastes and coke breeze is used for sintering purpose.

Request PDF | Effect of Limestone and Dolomite Flux on the Quality of Pellets using High LOI Iron Ore | Owing to the depletion of high-grade iron ore quality, many steel plants over the world are ...

Preparation of iron ore sinter consists essentially of two steps. One, granulation in a rotary drum of moist raw sinter feed comprising iron ore fines, coke breeze, limestone, lime, dun-

Industrial applications of dolomite are as follows: Iron and Steel Industry; Paint and Lacquer Industry; Building Materials manufacturing (Cement, Shimot Brick, etc.) ... Calcined Dolomite, Dead-burned or sintered …

Fig 1 Flowsheet of sintering process. The iron ore fines are natural ore of size 0 mm to 10 mm. The raw mix (also called sinter mix) is made with the weighed amount of iron ore fines, limestone, dolomite, sand or quartzite fines (flux), solid fuel (coke breeze or anthracite) and metallurgical wastes (collected dusts, sludge and mill scale etc).

SiO 2 and Al 2 O 3 are two important minerals that can affect the mechanical and metallurgical properties of sinter. This investigation systematically studied the influences of these minerals and revealed their functional mechanisms on sinter quality. Results showed that with an increasing Al 2 O 3 content in sinter, the sintering indexes …

Abstract. 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 …

In this study, all of the experiments were carried out in a pilot-scale test with a 170 mm diameter sintering pot. To prepare sinter mixture, all of the iron ore, fluxes, return fines, and coke breeze are granulated in a drum mixer which is 1000 mm in length and 600 mm in diameter for 5 min.

2.1 Material Selection for Sintering Process Raw materials like iron ore nes, limestone, dolomite, coke breeze, blast furnace return nes, sinter return nes, micro pellets, coke breeze, and calcined lime were used for the laboratory pot grate sintering studies. A total of 5 pot trials were planned to vary the pellet nes from 0 to 50% in the

Mixtures of fine powders with the basicities from 0.6 to 5.0 consisting of hematite (80%), slaked lime, and quartz were heated rapidly to 900-1400°C and cooled in air.

Fluxes: The function of the limestone and/or dolomite is threefold: (a) to supply calcined lime, (b) to form a fluid slag with the coke ash, gangue of iron ore and any other impurities of the charged materials and (c) to form a slag of such chemical composition that will provide a degree of control of sulphur content in the hot metal.

Lime is a slagging material used in the ironmaking process of blast furnaces, mainly derived from sinter or added limestone and dolomite (Feng et al., …

Raw Materials Used In Sinter Production. Iron Ore Fines: These finely crushed iron particles provide the sintering process with the much-needed Iron Oxide and serve as the primary source of iron in the final sinter product. Fluxes: Fluxes include limestone, dolomite, or other minerals that contain Calcium. Fluxes lower the melting …

In order to elucidate the fundamental aspects of the sintering processes of self-fluxing sinters, the mineral formation processes of mixtures of iron ore and lime stone with or without coke were studied. After heating between 1200° and 1350°C the sinters were examined by microscopy, X-ray diffraction and EPMA.The results indicated that the …

Based on the above issues, anthracite has become the main substituting fuel for coke breeze in iron ore sintering due to its reasonable price 19,20.When this substitution is made, the particle ...

For calcite and dolomite, these impurities are usually manganese or iron [137]. The decomposition temperature of dolomite is lower than that of limestone [138, 139]. Therefore, compared with ...

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. …

The <15 mm under size portion (~15 % of coke production) is screened out in the coke oven screening station, and then crushed to <5 mm as the fuel for the iron ore sintering process. The combustion heat …

Sinter raw materials of fine iron ore, lime stone and dolomite etc except coke breeze were controlled based on sinter chemical composition (SiO 2 =5.10%, C/S=1.78, MgO=1.30%, Al 2 O 3 =1.78%). Coke breeze content to raw materials was 4.5(%-raw materials except return fine and coke). Figures 2 and 3 show experimental procedure. …

Bunker 1 : Metallurgical Waste Bunker 9&10 : Coke- Breeze Bunker 2 : Quartzite Bunker 11&12 : Lime Dust Bunker 3-6 : Iron Ore Fines Bunker 7 : Lime stone Bunker 8 : Dolomite Sinter Machine …

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 …

The 2018 IPCC (The Intergovernmental Panel on Climate Change's) report defined the goal to limit global warming to 1.5 °C by 2050. This will require "rapid and far-reaching transitions in land, energy, industry, buildings, transport, and cities".

D. Coke, lime stone, dolomite and iron ore particles have characteristic size distributions; in a sinter mix the lay- ering of fines onto the surfaces of larger particles pro-