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In a blast furnace, iron ore (in the shape of sinter) and coke are converted into liquid hot metal at a high temperature. We have 2 blast furnaces, referred to as blast furnace A and blast furnace B, which serve as the heart of our production site. Blast furnaces operate for 20 to 25 years after which the refractory lining has to be renewed.
The injection of free resources of coke oven gas (COG), which is rich with hydrogen, into the modern blast furnace is one of such measures. In order to clarify the effect of COG injection on the reduction processes in the blast furnace; iron ore sinter was isothermally and non-isothermally reduced with different gas compositions at different temperature.
0.2 Sinter is an agglomerated product suitable for charging in the blast furnace obtained by incipient fusion of iron, ore fines along with other constituents, such as, coke breeze, flux, sand, mill scale, flue dust and other metallurgical wastes. 0.3 This specification refers to iron ore sinter meant for use in the blast furnace.
09-03-2013· Sintering is a thermal process (carried out at 1300 deg C to 1400 deg C) by which a mixture of iron ore, return fines, recycled products of the steel plant industry (such as mill scale, blast furnace dusts, etc.), slag forming elements, fluxes and coke fines are agglomerated in a sinter plant with the purpose of manufacturing a sintered product of a suitable chemical composition, quality ...
The reduction of industrial iron ore sinter has been carried out using a laboratory system as shown in Fig. 1. The system consisted of vertical tube T furnace connected with an automatic sensitive balance. Alumina reaction tube was fitted inside the graphite heating tube where the heat transferred mainly by radiation to the sinter samples.
Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. Compared with pellets, production of sinter is cheaper, and compared with lump ore, fluxed sinter is often more reducible with better softening characteristics.
high quality iron ores and sinters [1]. However, high quality iron ore resources are being depleted due to the heavy demand, and thus it is necessary to continue improving sintering technology in order to use lower quality iron ores in the raw mix. The blast furnace demands sinter with high strength, a …
26-07-2015· Technology has been developed for the production of fluxed local sinter and pellets with residual carbon for blast-furnace use. The new products have bette Improved iron-ore sinter for blast furnaces | SpringerLink
03-08-2021· SINTERING Sintering is a technology for agglomeration of iron ore fines into useful Blast Furnace burden material. This technology was developed for the treatment of the waste fines in the early 20th cenmtury. Since then sinter has become the widely accepted and preferred Blast Furnace …
23-03-2020· A blast furnace (BF) is the dominant process for making iron in the world. The BF is charged with metallurgical coke and iron burden materials including iron ore pellets, sinter, and lump ore. While descending in the BF the charge materials reduce.
15-08-2019· Sinter is the primary feed material for making iron in a blast furnace, and we have previously written about sintering and how it is a step between mining ore and steelmaking.. 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.
11-06-2019· Sinter is the primary feed material for making iron and steel in a blast furnace. According to the U.S. Environmental Protection Agency, the sintering process converts fine-sized raw materials, including iron ore, coke breeze, limestone, mill scale, and flue dust, into an agglomerated product, sinter, of suitable size for charging into the blast furnace.
Improved Iron-Ore Sinter for Blast Furnaces F. M. Zhuravlev, V. P. Lyalyuk, D. A. Kassim, I. A. Lyakhova, and E. V. Chuprinov Metallurgical Institute, Krivoi Rog National University, Krivoi Rog, Ukraine e-mail: [email protected] Abstract—Technology has been developed for the production of fluxed local sinter and pellets with residual carbon for blast-furnace use.
23-03-2020· A blast furnace (BF) is the dominant process for making iron in the world. The BF is charged with metallurgical coke and iron burden materials including iron ore pellets, sinter, and lump ore…
Key Words: Iron Ore; Pellet F eed; Sintering; Pelletizing; Blast Furnace. 1 Technical contributio n to the 43 rd Ironmaking and Raw Materials Seminar an d the 14 th Brazilian Iron
In iron ore sinter plants blast furnace dust and other fine-grained residues which are rich in iron or car-bon content are recycled. The carbon contained in the blast furnace dust can be used to replace coke breeze which is added to the charge as fuel for the sintering process. However, there is no information in
02-04-2010· 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 is carried out in three stages: raw material ...
30-01-2020· Reduction of Iron Ore Pellets, Sinter, and Lump Ore under Simulated Blast Furnace Conditions Anne Heikkilä,* Mikko Iljana, Hauke Bartusch, and Timo Fabritius 1. Introduction A blast furnace (BF) is the most common process for hot metal production in …
[A.K.Biswas: Principles of blast furnace iron making':Theory and Practice (1981), Cootha Publ.House, Australia, Ch VI]. The statistical analysis of the performance data of the blast furnace T at Bhilai (SAIL Plants) has shown that the parameters, specific consumption of sinter and weight of limestone in the burden were closely correlated: 20
Iron ore fines, coke breeze, limestone and dolomite along with recycled metallurgical wastes are converted into agglomerated mass at the Sinter Plant, which forms 70-80% of iron bearing charge in the Blast Furnace The vertical speed of sintering depends on the suction that is created under the grate
Iron oxides can come to the blast furnace plant in the form of raw ore, pellets or sinter. The raw ore is removed from the earth and sized into pieces that range from 0.5 to 1.5 inches. This ore is either Hematite (Fe 2 O 3 ) or Magnetite (Fe 3 O 4 ) and the iron content ranges from 50% to 70%.
02-04-2010· 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 …
Iron ore sintering. Part 1. Theory and practice of the ... a material of a suitable composition and strength to be loaded into the blast furnace to produce pig iron. KEYWORDS: Sintering, Iron ...
Reduction of Iron Ore Pellets, Sinter, and Lump Ore . 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.
10-10-2017· Iron is made by reacting iron ore (iron oxide and impurities), coke (a reductant) and limestone (CaCO 3) in a blast furnace. Iron ores with lower iron content such as taconite are first processed to concentrate the iron level and drive off volatile impurities. The iron ore is dressed or crushed into 0.5-1 in. chunks, which increases surface ...