Sinter is used as a feed material of the blast furnace to enhance productivity and reduce fuel consumption. For a successful sintering process, a mixture of iron ore (−10 mm + 100 μ), return fines, …
Herein, the reducibility of the iron ore pellet, sinter, and lump ore in the BF shaft are focused on. The experiments are conducted isothermally with a blast furnace simulator (BFS) high-temperature furnace at four different temperatures (700, 800, 900, and 1000 °C) for 300 min.
The reasons for low level development of large blast furnace in past decades were analyzed. It introduces the production, raw materials and operation indexes of large blast furnaces from 2011 to 2014.
Technology has been developed for the production of fluxed local sinter and pellets with residual carbon for blast-furnace use. The new products have better metallurgical characteristics than existing materials.
Beneficiation of high alu mina iron ore fines fro m Noamundi, India is studied for producing sinter/ pellet grade concentrate. The iron ore fine sample has a feed grade of 59.77%Fe, %4.71SiO 2 ...
As an example, in table 3 the percentage of sinter used in certain Chinese plants at certain time, is detailed. Plant Sinter % Xinyu 66.1 Saoxin 7.8 Yangkuan 39.2 Bayi 48.7 Guilin 63.1 Xinyang 34.5 Langfang 41.2 …
1.2. Why sintering. Lead and zin metals are produced in blast furnace. In a blast furnace, ore, coke and flux are continuously supplied through the top of the furnace, while air (sometimes with …
Sinter Plant The function of the Sinter Plant is to supply the blast furnaces with sinter, a combination of blended ores, fluxes and coke which is p ... The weighed materials pass along a conveyor to the mixing drum where water is added either manually or as a calculated percentage of the weight of material entering the drum. The moisture ...
It therefore met the chemistry targets of magnetite concentrates for making both blast furnace and DR (direct reduction) pellets and was considerably better in chemistry than the typical sinter ...
Sketch of a blast furnace for FeMn production currently proposed by a Chinese company [9]. 1 y 2: System for charging raw materials; 3: furnace body; 4: FeMn tap hole; 5: Hot blast through tuyeres ...
The BF pellet premium over sinter feed (CFR China) ranged from a little over $10/ton in January-February 2016 to about $35/ton in August 2016 and went on a rampage beginning in May 2017, ... Blast furnace pellets …
So, the sintering process main objectives are to increase the size of ore additives to a level acceptable to the blast furnace for improving permeability of burden inside the BF; to form a strong agglomerate with high bulk reducibility; to remove volatile matter like CO 2 from carbonates, H 2 O from hydroxides, and sulfur from sulfide type of …
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 …
What is iron ore pellet. Iron ore pellets are made by adding a small amount of additives to the fine ore powder (-200 mesh, that is, the ore powder with a particle size of less than 0.074mm accounts for more than 80%, and the specific surface area is more than 1500cm2/g), adding water to the pelletizer, relying on capillary force and mechanical …
1.2 Fuel 1.2.1 Coke Breeze . Coke is the major reductant and heat source for blast furnace operation, where the lump coke (25–80 mm) is charged into blast furnace directly, and nut coke (15–25 mm) is mixed with the iron burden (sinter, pellet, or lump) and then charged into the furnace.
There, the sinter mixture is partially melted at a temperature between 1300-1480 °C and undergoes a series of reactions that forms the sinter cake to be loaded into the blast furnace to produce ...
The aspect flows of the pig iron production process assessed herein are described as follows. The most used iron-bearing raw materials consist of iron ore in the form of lump ore, pellets, and ...
High temperature softening behaviours of iron blast furnace feeds (sinter, lump and pellet) have been determined under conditions simulated to the blast furnace. The industrial samples were packed with sandwich structure (coke / ore / coke) in graphite crucibles and...
There are three possible heat-recovery options from the cooler: Preheating of combustion air for the ignition furnace and post-heating of the freshly ignited sinter. Selective waste …
The global warming impact of the Case 1 process is 2474.61 kg CO 2 eq, and there are four main impact sources: blast furnace gas, blast furnace ironmaking unit, …
Directly fed to blast furnace and direct reduction: Sinter feed: 0.15–6.3: Agglomeration by sintering to be fed in blast furnaces: Pellet feed <0.15: Agglomeration by pelletizing to be fed to blast furnace and direct reduction: ... Basicity in this context is the ratio between the weight percent of CaO and SiO2. Sections. Author information. 1.
The blast furnace cannot operate without coke, but since it is the most expensive feed material used in the blast furnace iron-making process, there has always been a demand to minimize its use. ... which contains 4 percent carbon and some Silicon. This hot metal flows to the bottom of the furnace, through the coke bed and is periodically ...
The effect of iron carbon agglomerates (ICA) on the reduction of sinter is very important to blast furnace (BF) ironmaking. In this paper, the isothermal reduction kinetics of ICA-sinters mixture ...
In the actual operation of the blast furnace, efforts were aimed at achieving an improvement in the shaft efficiency by 0.3%, and attained a productivity coefficient of. …
increase in return fines percentage indicates a lack of coke in. the mix, irregular combustion and moisture changes in the ... in the blast furnace and effect on sinter properties during reduction
In a blast furnace, the reduction of the ferrous burden (iron ore, sinter and pellet) is accompanied by the burden shrinkage, softening and melting in the cohesive zone. ... The number of pixels per phase was utilized to estimate the volume percentage of different phases present in a micrograph. To further enhance the accuracy in the ...
Addition of dolomite through sinter is more preferred route since CO2 of dolomite is driven out during the sintering process. In case of sintering, dolomite is crushed to -3 mm (in the range of 85 % to 90 %) in hammer crushers before mixing it in the sinter mix. In case of direct feed to blast furnace, lump dolomite (10 mm to 30 mm …
Download scientific diagram | Proportion of sinter/pellet and iron ore in burden mixture. from publication: Means to cope with the higher alumina burden in the blast furnace | The stability of the ...
Raw materials. Commercially supplied iron ore pellets and sinter of size range 10–13 mm are utilised in the present study. Comparable to the utilisation in the industrial blast furnace, two types of …
The basicity of sinter was fixed on the basis of percentage of sinter charged in blast furnace. The level of silica in sinter was decided depending upon the …
A lead sinter to be smelted in a blast furnace analyses 8% CaO, 25% SiO2 and 15% Fe. In Smelting this, a slag is desired with CaO, FeO and SiO2 in the proportions. CaO: FeO: SiO2 = 4:6:7. To obtain this slag, iron ore and limestone of the following analyses are added to the charge: Iron ore: wt%Fe = 45%, wt ...
component in the blast-furnace burden, the production of high-quality sinter is crucial for assuring ... of off-gas in your sinter plant by up to 50 percent. This significantly lowers not only environmental pollution but ... feed) • Improved sinter quality with reduced standard deviations (greater homogeneity)
