The Shrinkage of Burden Materials and Pressure Drop of Gas in Softening and Fusing Zones of Blast Furnace

Ono, Kazuyoshi; Hida, Yukihiro; Shigemi, Akitoshi; Kodama, Koretake

doi:10.2355/tetsutohagane1955.61.6_777

Cited by 22 publications

(18 citation statements)

References 1 publication

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“…11. The observed value of gas flow resistance in blast furnace (KR) decreases with the decrease of the shape index of melting zone (1) and has good agreement with the calculated results.…”

Section: Effect Of Shape Of Melting Zone On Gas Flow In Blast Furnacesupporting

confidence: 71%

Softening Property of Iron Ore Sinter and Its Inflence on Gas Flow in Blast Furnace

Shimoda¹,

Kurita

Iwanaga

1987

ISIJ Int.

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SynopsisThe softening test under the conditions simulated an actual blast furnace and the gas permeability test for the softened sinter bed were carried out. An attempt was made to express the pressure drop in the softened sinter bed by the pressure drop equation with the first and the second order terms of gas velocity.The effects of the softening properties at high temperature on the gas flow in blast furnace were evaluated by the use of the mathematical gas flow model. The main results are as follows.(1) When the gas flow resistance obtained from the softening test at high temperature increases, the radial gas flow becomes predominant in the cohesive zone and the permeability in the blast furnace becomes worse.(2) When the high temperature properties of sinter become worse, the formation of steep inverse V-shaped cohesive zone is expected to prevent the aggravation of the permeability in the blast furnace.

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“…11. The observed value of gas flow resistance in blast furnace (KR) decreases with the decrease of the shape index of melting zone (1) and has good agreement with the calculated results.…”

Section: Effect Of Shape Of Melting Zone On Gas Flow In Blast Furnacesupporting

confidence: 71%

Softening Property of Iron Ore Sinter and Its Inflence on Gas Flow in Blast Furnace

Shimoda¹,

Kurita

Iwanaga

1987

ISIJ Int.

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“…Similar linear relations were found in (25) and (3)(4) Figure 7 shows the relationship between p/oc calculated using values listed in Table I and specific surface area listed in Table 2 for the cake samples. The average in the directions (16) and (2)(3)(4)(5) was taken to this calculation since the anisotropy of void structure does not affect the measurement of surface area. Specific surface area measuredwith all the different magnifications has linear relationships with plcc, as' 8 and dp can be calculated by substituting oc and p into Eqs.…”

Section: Introductionsupporting

confidence: 58%

“…Specific surface area measuredwith all the different magnifications has linear relationships with plcc, as' 8 and dp can be calculated by substituting oc and p into Eqs. (3) and (4) and the obtained values are listed in Table l. Average values of a~'1', in the directions (l6) and (2)(3)(4)(5) are also shown in Fig.…”

Section: Introductionmentioning

confidence: 97%

“…(3) and (4) and the obtained values are listed in Table l. Average values of a~'1', in the directions (l6) and (2)(3)(4)(5) are also shown in Fig. 7 Relationship between p/e( and specific surface area measuredby imageanalysis of the voids in sinter cakes.…”

Section: Introductionmentioning

confidence: 99%

“…The pressure drop at any gas velocity lowers with an increase in the admixing ratio of coke in the raw mixtures. The same arrangement for the gas flow in (2)(3)(4)(5) Assuming a certain bed structure, the first term becomesconstant which consists of a permeation coefficient and parameters representing the bed structure and the second term becomes the product of a similar constant and a variable~/(puo) which depends on the physical properties and gas conditions. Figure 6 shows the result of pressure drop measurement in (1-6) direction arranging on the basis of Eqs.…”

Section: Introductionmentioning

confidence: 99%

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