US3262687A - Shaft furnaces - Google Patents

Shaft furnaces Download PDF

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Publication number
US3262687A
US3262687A US346554A US34655464A US3262687A US 3262687 A US3262687 A US 3262687A US 346554 A US346554 A US 346554A US 34655464 A US34655464 A US 34655464A US 3262687 A US3262687 A US 3262687A
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US
United States
Prior art keywords
bricks
elongated
layer
vertical direction
furnace
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US346554A
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English (en)
Inventor
Freygang Manfred
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Phoenix Rheinrohr AG
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Phoenix Rheinrohr AG
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Filing date
Publication date
Application filed by Phoenix Rheinrohr AG filed Critical Phoenix Rheinrohr AG
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Publication of US3262687A publication Critical patent/US3262687A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0043—Floors, hearths
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/10—Cooling; Devices therefor
    • C21B7/106—Cooling of the furnace bottom
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/12—Shells or casings; Supports therefor
    • F27B1/14—Arrangements of linings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs

Definitions

  • the base of a shaft furnace is formed by a layer of a number of elongated refractory bricks on end, the bricks at the edge of the base being located in position and the other bricks tapering in the upward direction so that they are keyed in position against upward movement by their engagement with one another.
  • this single layer of tapered bricks the gaps between adjacent bricks become so long that even after considerable wear, extending possibly over a period of many years, there is little chance of penetration through the gaps to undermine the base and make it rise to the surface of the iron.
  • the said layer of tapered bricks forming the essential part of the base may be erected on a comparatively thin base layer of bricks the gaps between which are offset from the gaps between the upright bricks.
  • the vertical construction of the upright base bricks extends as far as the lining of the furnace casing or jacket.
  • the bottom of the jacket lining may be formed by edge bricks which are also elongated and are positioned on edge but are shorter than the rest of the bricks forming the base. There is then an interruption in the horizontal joint at the edge of the top of the base bricks.
  • the bricks are arranged in parallel rows and -taper only along their surfaces which are adjacent bricks in the same row, the adjacent faces of one pair of adjacent bricks in each row being normal to the flat top of the base.l
  • FIGURE 1 is a section through the hearth portion of a blast furnace taken along a vertical plane
  • FIGURE 2 is a sectional view according to line 2 2 in FIG. l.
  • the blast furnace hearth portion shown in the drawing comprises in the conventional manner an outer shell of metal consisting of a partly cylindrical and partly conical side portion 1 and a base portion 2.
  • This shell i-s provided with a lining of refractory material, said material consisting of bricks. These bricks are preferably made of carbon, but they may also consist of any other refractory material used heretofore in furnaces of the kind under discussion.
  • the lining covers the base portion 2 of the shell as well as its side portion 1.
  • the part of the lining covering the base portion 2 of the Shell consists of a lower and rather thin layer of bricks 3 having the shape of rectangular blocks.
  • a second layer of bricks is disposed above the bottom layer, the second layer consisting of rather tall bricks 4, 5 and 6, bricks 4 being disposed adjacent the outer shell and bricks 5 and 6 filling the space between bricks 4.
  • the shape of bricks 5 and 6 is such that it tapers from the bottom to the top.
  • any such brick has a bottom face of rectangular shape, a top face of rectangular shape, two opposite side faces of rectangular shape and two opposite side faces of trapezoidal shape.
  • the rectangle forming the top falce becomes slightly smaller than the rectangle forming the bottom face.
  • Bricks 4 may have any suitable shape, for example that of a parallelepiped, as shown in the drawing. I
  • this gap 7 there is a gap 7 between bricks 4 and the adjoining outer shell, this gap having a Width of for example 2 to 4 inches and being filled with mortar.
  • the bricks 4, 5 and 6 in the upper layer may have a height of 60 to 100 inches or even more and thus are several times as high as any one of the layers used in conventional furnaces.
  • the part of the refractory lining covering ythe base portion 1 of the shell consist of two vertical layers of bricks 8 and 9, extending across part of the hearth portion of the furnace, and a single vertical layer 10 of bricks forming the upper continuation of layers 8 and 9.
  • the bricks 4 are slightly less high than all the other bricks of the same layer, so that the lowermost bricks 8 of the side lining are offset against the plane formed by the entirety of the top faces of bricks 5 and 6, said plane being designated 11 in FIG. 1.
  • the layer of bricks 3 is placed on the bottom portion 2 of the shell in the usual manner.
  • the surfaces of the bricks may be covered with a film of refractory sealing material, such as is obtained from a suspension of powdered carbon in water, which suspension fills the y are then added until the row is completed, with the exception, however, of the respective bricks 4 and 6 a't either end of the row.
  • Bricks 4 are then inserted and at rst pushed against the outer shell. This leaves sufficient space to introduce bricks 6, despite their tapered shape. With all the bricks of one row having been brought in position, bricks 4 are shifted inwardly to contact the adjacent bricks 6 and at the same time forming the gaps 7 which thereupon are lled with mortar.
  • the bottom lining is completed and the side lining, consisting of brick layers 8, 9 and 10, may then be built in the usual way.
  • the bricks 4, 5 and 6 forming the major part of the bottom layer may also be covered with .a refractory sealing film of the aforementioned nature to fill the gaps between adjacent bricks and between the upper and lower layers.
  • Bricks 4, 5 and 6 are so disposed on the bricks 3 of the lower layer that their joints are olfse-t from the joints of the bricks in the lower layer, as shown in the drawing.
  • Shaft furnace comprising an outer steel jacket and an inner refractory lining forming a hearth for the furnace, said lining including a bottom and a side portion, said bottom portion comprising a relatively narrow foundation layer of .bricks and a relatively wide main layer formed by a plurality of elongated bricks horizontally aligned in substantially parallel rows 4and superimposed on said foundation layer, said elongated bricks having a length in the vertical direction of from 60 to 100 inches, the elongated bricks at the ends of said rows being shorter in the vertical direction rthan the elongated bricks intermediate thereto, and said intermediate elongated bricks being tapered upwardly lin the vertical direction and being in engagement with one another so that said intermediate elongated bricks are wedged in position against upward displacement thereof.
  • each of the elongated bricks intermediate the end bricks 4of said rows has a bottom rectangular face, a top rectangular face, a pair of opposite rectangular side faces Iand a pair of opposite trapezoidal side faces.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Blast Furnaces (AREA)
US346554A 1963-02-23 1964-02-21 Shaft furnaces Expired - Lifetime US3262687A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP31199A DE1213447B (de) 1963-02-23 1963-02-23 Hochofenboden mit Kohlenstoffsteinen

Publications (1)

Publication Number Publication Date
US3262687A true US3262687A (en) 1966-07-26

Family

ID=7372204

Family Applications (1)

Application Number Title Priority Date Filing Date
US346554A Expired - Lifetime US3262687A (en) 1963-02-23 1964-02-21 Shaft furnaces

Country Status (7)

Country Link
US (1) US3262687A (nl)
AT (1) AT256151B (nl)
BE (1) BE644171A (nl)
DE (1) DE1213447B (nl)
GB (1) GB1045987A (nl)
LU (1) LU45312A1 (nl)
NL (1) NL6401264A (nl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4673167A (en) * 1984-02-02 1987-06-16 Kloeckner Cra Technologie Gmbh Method for installing a converter bottom
US20130119589A1 (en) * 2010-07-27 2013-05-16 Paul Wurth S.A. Hearth for a Metallurgical Furnace Having an Improved Wall Lining

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101684985B (zh) * 2008-09-24 2011-08-17 中冶天工建设有限公司 环形加热炉炉底保温隔热砖砌筑法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1358703A (en) * 1917-09-26 1920-11-16 Harry B Bryson Metallurgical furnace
US1797590A (en) * 1926-08-23 1931-03-24 Illinois Pacific Glass Corp Glass-tank furnace
US2211127A (en) * 1937-08-23 1940-08-13 Didier Werke Ag Furnace bottom

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1358703A (en) * 1917-09-26 1920-11-16 Harry B Bryson Metallurgical furnace
US1797590A (en) * 1926-08-23 1931-03-24 Illinois Pacific Glass Corp Glass-tank furnace
US2211127A (en) * 1937-08-23 1940-08-13 Didier Werke Ag Furnace bottom

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4673167A (en) * 1984-02-02 1987-06-16 Kloeckner Cra Technologie Gmbh Method for installing a converter bottom
US20130119589A1 (en) * 2010-07-27 2013-05-16 Paul Wurth S.A. Hearth for a Metallurgical Furnace Having an Improved Wall Lining
US9587882B2 (en) * 2010-07-27 2017-03-07 Paul Wurth S.A. Hearth for a metallurgical furnace having an improved wall lining

Also Published As

Publication number Publication date
GB1045987A (en) 1966-10-19
DE1213447B (de) 1966-03-31
AT256151B (de) 1967-08-10
NL6401264A (nl) 1964-08-24
LU45312A1 (nl) 1964-03-31
BE644171A (nl) 1964-06-15

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