The Principle of Blast Furnace Operational Technology and Centralized Gas Flow by Center Coke Charging Dr. Yoshiyuki MATSUI, Research Development Laboratory, Kakogawa Works, Iron Steel Sector Dr. Koichiro SHIBATA, Yasuo YOSHIDA, Ironmaking Department, Kakogawa Works, Iron .
Sinter Plant. Sintering of fine particles into a porous clinker – sinter – is necessary to improve the permeability of the burden, making reduction easier. A high quality sinter has high reducability, which reduces the intensity of blast furnace operations and reduces coke demand.
as feed to blast furnaces. These ore fines are agglomerated typically through sintering or pelletization to improve the blast furnace burden permeability, reducing the coke consumption rate and improving reduction rate. Sinter is used as blast furnace feed at percentages of up to 90%, and contributes to reduced operating costs (Kogel et al., 2006).
The furnaces in China use metallurgical coke, and the coke rates vary between 500 630 kg/thm. Extensive innovations have been introduced in the Chinese Mini Blast Furnaces including: >> Injection of pulverized anthracite to the extent of 60 kg/thm, to bring down the coke rate by about 40 50 kg/thm.
Blast Furnace and Stoves. Blast Furnace. ... The furnace is charged with sinter pellets and rubble ore (iron bearing materials), flux and coke. Conventionally, the materials are charged through a rotating hopper distributor and twobell system, although many modern furnaces have the Paul Wurth bellless top which uses a rotating chute ...
slime ponds. Its generation rate is 150200 kg per ton of ore. Use of Iron Oxide Fines in Blast Furnace It is a conventional practice to use iron ore fines (6 mm) in sintering to make blast furnace quality sinter. However, sinter plants have a restriction to use micro fines, because it reduces the permeability of bed resulting production loss.
Aug 10, 2017· If particles of such sizes are directly used in the blast furnace for obtaining iron, they would choke the tuyeres and may even cause explosion inside the blast furnace. Thus a sample of adequate size is required to be used in the blast furnace . Hence sintering is done inorder to use the cheap small sized hematite particles.
The stove design and the number of stoves, employed. . with an average size of 45 mm. For an iron ore of 1030 mm size. the same is around 3538°. Similarly the angle of repose for sinter is in the range of 3134° and for pellets it is around 2628°. the angle of repose is around 3335°. For coke of 2775 mm size.
A Review of the Production of Ferromanganese in Blast Furnace Download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. The production of highcarbon ferromanganese in blast furnaces is reviewed, based on public literature and requests to consultants and suppliers to the industry.
Literature review reveal that formation of a narrow cohesive zone lower down the blast furnace improves the productivity and reduces the coke rate and that in majority of the cases, the iron bearing material in the blast furnace reaches the softening temperature (top end of cohesive zone) with a reduction degree higher than 50 percent. The ...
blast furnace model experiment of 1/101/20 reduced scales concerning the optimi zation of the blast furnace inner wall profile seen from the viewpoint of the stabiliza tion of the solid flow and the gas flow.
A number of injection trials carried out over the years at the LKAB experimental blast furnace ... sinter fines and iron ore fines were carried out in Japan aiming to control the HM quality. ... Coke rate 414480 400452 439 444446 440 428 394 406 398408 kg/tHM
The boundary of the model considered includes operations needed for the operation of the blast furnace,, coke plant to transform coal into coke, sinter plant to prepare iron ores for blast furnace, coal grinding for direct injection into the blast furnace, blowers and stoves to generate hot wind for the blast furnace and the blast furnace ...
Innovative uses of Hydrogen in Steelmaking. I. The 2 Routes to Steelmaking I. Blast Furnace > Basic Oxygen Furnace (BF/BOF) II. Electric Arc Furnace (EAF) I. Scrap II. Scrap Supplements ... Coal. O2. Scrap/HBI. 1500 °C Liquid 'Hot Metal' Blast. Furnace. sinter. Lump Iron Ore Fine Iron Ore. Coke fuel reductant structure. Option: 1 2 3. EAF.
Blast furnace gas is produced during the iron oxide reduction in blast furnace iron making in which iron ore, coke and limestone are heated and melted in a blast furnace and is an indigenous process gas of the steelworks industry (Pugh et al., 2013).
One of the main parameters in the gas flow distribution in a Blast Furnace is the size distribution. In the CSA Blast Furnaces, the sinter fines extraction was improved through sieves adjustments in the stock house, and a better gas flow control into the Blast Furnace was observed. In this paper, it is possible to evaluate the influence of the improvement in the sinter screening process in the ...