reduction while ensuring the quality of sintered ore. 2. Experimental Method 2.1. Raw Materials The chemical compositions of iron ore fines and fluxes used in the sintering experiments are shown in Table 1. Iron ore fines include PB, Yandi, Kooly, Carajas, and Sijiaying, fluxes include dolomite, quicklime, and limestone, and the
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-
It was observed that the iron ore sample contains 59.75% Fe, 4.52% SiO 2, 3.84% Al 2 O 3, and higher content of LOI 4.85%.The LOI distribution for the iron ore fine is listed in Table 2 indicating the weight loss% due to goethite at 400 °C; kaolinite at 850 °C and carbonate minerals at 950 °C. The heating cycle indicates that maximum weight loss (~65%) occurs at …
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 kaolinite and synthetic hercynite), are all supplied by Chinese steel enterprises. ... MgO and SiO 2 and sinter basicity respectively. Coke possesses a fixed carbon content of as high as ...
The major advantages of using sinter in BFs are : Use of iron ore fines, coke breeze, metallurgical wastes, lime, dolomite for hot metal production ... The raw materials used are as follows - Iron ore fines (-10 mm), coke breeze (-3 mm), Lime stone & dolomite fines (-3mm) and other metallurgical wastes. The proportioned raw materials are mixed ...
The proportioning of iron ore is the first step of the sintering process. It mixes different kinds of iron ores with coke, limestone, dolomite, and returned sinter to produce a raw …
Using biomass for partial replacement of coke breeze in iron-ore sintering process is an effective technique as a countermeasure against global warming. ... coke, limestone and dolomite are used ...
Iron ore sintering having two-layers, with normal coke rate in the top layer and lower coke rate in the bottom layer can significantly reduce the overall coke rate and improve the sinter quality ...
process the raw materials like limestone, dolomite, coke, iron ore fines and metallurgical wastes are converted into a solid mass i.e., pellets by using the heat produced by the incipient fusion during the combustion process. This is an important process for ... Later the iron ore pellets goes with the sinter screeners for screening process ...
Beneficiated iron ore, coke, limestone and dolomite is then fed on top of the blast furnace. Hot air is then injected through the nozzles that are at the base of the furnace. This results in iron ore and sinter melting and collecting at the bottom of the furnace as a molten pool. It is the carbon and carbon monoxide in coke that helps in ...
The quality of sinter is judged by its chemical, physical and metallurgical properties, which are required for blast furnace. When maximum alumina content in the iron ore fines is 1·5%, alumina to silica ratio of <1·0 is …
crucible-like hearth. Iron-bearing materials (iron ore, sinter, pellets etc.), coke and flux (limestone and dolomite) are charged into the top of the shaft. A blast of heated air and also, in most instances, a gaseous, liquid or powdered fuel are introduced through openings at the bottom of the shaft just above the hearth crucible.
The coke, dolomite, and limestone for TG (thermogravimetry) tests are from the sintering plant of the Baoshan Iron and Steel Co., Ltd. in China. The ultimate and proximate analyses of the coke are performed according to the Chinese national standard procedures (Ultimate analysis GB/T: 213–2003 and Proximate analysis GB/T: 212–2001), as ...
Mixture of iron ore fines, limestone, dolomite, coke breeze, lime and metallurgical wastes are fused partially to form lumpy porous iron bearing mass called sinter. Conventionally
In sinter plant fluxes including limestone and dolomite are added to improve the sinter properties of iron ore and to provide an appropriate slag composition of the blast furnace.
It describes how iron ore fines, limestone, dolomite and other raw materials are blended and formed into nodules. These nodules are then processed through a sintering machine, where combustion of coke forms sintered agglomerates. The sinter is cooled, crushed, and screened before use as a raw material input for blast furnaces. Key aspects of ...
With the addition of iron ore, limestone, and dolomite, the maximum emission concentrations of CO decreased to 208.75 mg/m 3, 200 mg/m 3, and 190 mg/m 3, and the …
Iron ore fine limestone, dolomite, coke breeze, sinter return fines and calcined lime collected from the sinter plant stock yard had different moisture contents, and so they were dried in a hot oven at 150°C for 3 h. ... The negative influence of FeO on the reducibility of iron ore sinter was believed to be a result of the decrease in ...
Five kinds of iron ore, return ore, limestone, dolomite, coke and quick lime were used in the experiment. ... The iron ore sintering experiment is carried out on the pilot-scale sinter pot system, as shown in Fig. 1. There are 5 pressure measuring points located at 100 mm, 200 mm, 300 mm, 400 mm, 500 mm from top to bottom of the pot to record ...
The coke combustion process in iron ore sintering is dependent on the coke size. Therefore pilot-scale sintering tests with blends containing different coke size distributions were carried out to ...
Iron ore fines Lime Stone Dolomite Coke fines Mill scale Flue dust. Internal Return fines. 22 ... Specific Consumption of raw materials per unit ton of sinter. Iron ore fines Lime stone(HS) Lime stone(LS) Lime LD slag Mill scale Flue …
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 Building(S.M.B) • This is a section which deals with sinter preparation. • There are total of 8 bunkers in S.M.P.P. in which raw materials are stored.
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).
iron ore fines as sinter feed.Burnt lime was used along with the waste material as binder and to partly as replacement of lime stone. The raw materials used for sintering are iron ore (-8mm), coke breeze (-3mm), lime stone, dolomite (-3mm), lime and gas cleaning plant (GCP) sludge, dust catcher plant dust. Initially
A. Iron ore sintering is considered a 1-D transient pro-cess; the lateral transfer of heat and mass across the bed being negligible B. The continuum of the gas (O2, CO2, CO, H2O and N2) and solid (coke, limestone, lime, dolomite, mag-nesia, water, hematite and magnetite) phases; with the gases flowing through a stationary bed of solids
Generally before sintering a charge-mix is prepared that consists of iron ore fines, fluxes (limestone and/or dolomite), fuel (coke breeze), sinter return-fines, and sometimes some waste-recycling plant materials. Therefore, efficiency of producing good quality sinter depends on many characteristics of the charge mix.
Sintering is a process in which iron ore fines along with limestone, dolomite, coke fines, quicklime GCP dust, flue dust, mill scale and return sinter are mixed with water to form nodules and then fired to form sinter.1) Mix of these materials is then charged into pallet cars, where an ignition
kept constant for all experiments. The target sinter chemistry and the base mix proportion for the pot tests are shown in Table 3 and Table 4 respectively. Small piles were prepared by layering the iron ore fines, coke breeze, limestone, dolomite, burnt lime and return fines and LD slag on weight basis (Table 4).