CN101642733B - Method for installing ceramic lining plates of cyclone dust remover of blast furnace - Google Patents
Method for installing ceramic lining plates of cyclone dust remover of blast furnace Download PDFInfo
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- CN101642733B CN101642733B CN2009100632814A CN200910063281A CN101642733B CN 101642733 B CN101642733 B CN 101642733B CN 2009100632814 A CN2009100632814 A CN 2009100632814A CN 200910063281 A CN200910063281 A CN 200910063281A CN 101642733 B CN101642733 B CN 101642733B
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Abstract
The invention relates to a method for installing ceramic lining plates of a cyclone dust remover of a blast furnace in an iron mill. The operation comprises the following operation steps: selecting a standard ceramic lining plate and an abnormal ceramic lining plate, cleaning the inner wall of a case body of the dust remover, finding a horizontal point at the bottom of the inner wall of the case body, positioning an installation mold in a position at one-half between two fulcrums on a horizontal line with the horizontal point as a benchmark spot-welding fulcrum and all fulcrums forming the installation benchmark line of the lining plates, inserting a taper stud bolt in the circular hole of the mold, welding the stud bolt on the steel plates of the case body by spot welding, taking down the mold and tightly welding the stud bolt, installing the lining plates layer by layer in each area, coating gumming dirt on the inner surface of the case body and the paste surfaces and the circumference of the lining plates, sheathing the hole in the middle of the lining plates on the taper stud bolt, positioning an antiskid red copper positioning ring, and tightly screwing a taper nut to fix the ceramic lining plates on the case body. A blast furnace adopting the invention does not need shutdown overhauling, reduces the overhauling expense, improves the production capacity of the blast furnace, prolongs the service life of the ceramic lining plate, and has favorable popularization value. The invention has good using effect by trial.
Description
Technical field
The present invention relates to a kind of installation method of ceramic lining plates of cyclone dust remover of blast furnace.
Background technology
Since the domestic employing cyclone dust collectors, on the blast furnace of many steel plant, found application.Usually all there is certain defective in 3 kinds of ceramic lining plates of cyclone dust remover installation methods that adopt:
1, adopt the method that viscose glue connects ceramic lining plate and deduster housing of smearing,
The shortcoming of this method mainly is the work under bad environment of ceramic lining plate, 300 ~ 1000 ℃ of operating temperatures, raw coke oven gas by the time airflow scouring strong and the raw coke oven gas aggressivity is extremely strong, the ceramic lining plate that makes this method install easily comes off, influence cyclone dust collectors service life, then influence blast furnace production as frequent stop production to overhaul.
2, the method for bolt connection ceramic lining plate and housing is used in employing perforate on the deduster housing then,
There is the hidden danger of gas leak in need be on the deduster housing a large amount of perforates of installation and must uses a large amount of sealing caps bolt welded closure that housing is outer, and economy is relatively poor; Raw coke oven gas by the time airflow scouring strong and extremely strong perishable the coming off of bolt that makes enclosure interior of raw coke oven gas aggressivity, cause ceramic lining plate to come off, influence cyclone dust collectors service life, then influence blast furnace production as frequent stop production to overhaul.
3, employing adds metab when making ceramic lining plate, with the method that is welded to connect liner plate and housing,
The manufacturing cost height of ceramic lining plate, less economical; Every block of liner plate need be pre-installed one by one, fixes, weld during installation, and construction speed is slow, construction cost is high and be unfavorable for blast furnace short time stop production to overhaul.
Originally blast furnace is owing to reasons such as ceramic lining plates of cyclone dust remover comes off cause common 2 ~ 3 months of stop production to overhaul once.
Summary of the invention
The objective of the invention is to aim to provide a kind of installation method of a kind of ceramic lining plates of cyclone dust remover of blast furnace at above-mentioned present situation.
The implementation of the object of the invention is, a kind of installation method of ceramic lining plates of cyclone dust remover of blast furnace, and concrete job step is as follows:
1) chooses the ceramic lining plate that material is the zirconium mullite pottery, ceramic lining plate has standard liner plate and special-shaped liner plate, the specification of standard liner plate is 180mm * 120mm * 30mm, and special-shaped liner plate has the special-shaped ceramics liner plate different with standard liner plate width and the special-shaped ceramics liner plate of tapering is arranged
2) divide one～six totally six zones in the installation site of cyclone dust collectors inside,
3) ceramic lining plate is installed in zone one,
Concrete steps are as follows:
(1) ash on deduster inner walls surface, rust etc. are cleaned out earlier with electronic steel wire abrasive machine or wire brush, oil stain acetone scrub,
(2) looking for a level point in the inner walls bottom, is datum mark with this level point, and by the fulcrum of distance weldering every 5 standard liner plate width, each fulcrum constitutes the liner plate installation reference line,
(3) installation mold is placed on the horizontal line 1/2 place between two fulcrums, then double-screw bolt is inserted in the circular hole of mould, a mould and taper double-screw bolt end to be welded abuts against on the hull plate, with stainless steel electrode the double-screw bolt point is welded on the hull plate, then mould is taken off gently, and the double-screw bolt full weld is welded, it is benchmark that every layer of arc stud welding scoops out following one deck liner plate, and 1/3 liner plate that misplaces is wide
Die shape is of a size of 6 liner plate width * 1 liner plate length, the middle aperture that bores 6 taper double-screw bolt location in proportion,
(4) upper and lower two-layer ceramic liner plate dislocation 1/3 ± 1mm liner plate is wide, applies the thick clay of 0.5mm at surface of shell, and solidifies through 30 minutes; Around reaching, liner plate stickup face is coated with full clay respectively, thick 2 ~ the 3mm of clay, then that liner plate is middle borehole jack is on the taper double-screw bolt, around the liner plate locating hole, coat clay again, and put anti-skidding red copper locating ring, the tapered cup nut of screwing on well, tapered cup nut and taper bolt are welded together, tapered cup nut is about to ceramic lining plate and is connected on the housing, and bonding clay adopts HSJ-100
The dress ceramic lining plate of peace is mainly standard liner plate and special-shaped ceramics liner plate A, B in the zone one,
4) ceramic lining plate is installed in zone two, zone 2 is eddy flow plate installation regions, position of opening according to the eddy flow plate is divided into several installation zonules, earlier ceramic lining plate arranged on request in advance in each zone, the adjusting play, determined the position of centre bore, weld taper bolt then, smear clay and liner plate is installed by the method in zone one again
The dress ceramic lining plate of peace is mainly the standard liner plate in the zone two,
5) by the method that ceramic lining plate is installed ceramic lining plate is installed in zone three in zone one, zone three interior dress ceramic lining plates of pacifying are mainly standard liner plate and special-shaped ceramics liner plate C, D, E,
6) by the method that ceramic lining plate is installed ceramic lining plate is installed in zone four in zone one, the dress ceramic lining plate of peace is mainly standard liner plate and special-shaped ceramics liner plate A, B in the zone four,
7) by the method that ceramic lining plate is installed ceramic lining plate is installed in zone five in zone one, regional five bottoms and top are used special-shaped ceramics liner plate F, G respectively,
8) by the method that ceramic lining plate is installed ceramic lining plate is installed in zone six in zone one, regional six tops and a regional interface adopt special-shaped ceramics liner plate H.
Adopt the present invention without stop production to overhaul, only when the blast furnace annual overhaul, check to repair to get final product, reduced, improved the production capacity of blast furnace because the production cost that the blast furnace stop production to overhaul causes has reduced the recondition expense that ceramic lining plate is changed.
The present invention adopts a kind of stainless steel bolt connection ceramic lining plate to combine the bonding method of high temperature resistant clay with housing and installs and fixes ceramic lining plate, solved the reliable problem that connects liner plate and housing in the working environment that deduster internal temperature height, raw coke oven gas corrode and airflow scouring is violent, effectively improve the service life of ceramic lining plate, have excellent generalization values.
First Application of the present invention is installed in the newly-built 7#3200m3 ceramic lining plates of cyclone dust remover of blast furnace of Wuhan Iron ﹠ Steel (Group) Corp., construction on April 10,10 days to 2006 March in 2006.Wuhan Iron and Steel Plant 7# blast furnace was gone into operation so far on June 30th, 2006, and the ceramic lining plates of cyclone dust remover operating position is good, and the liner plate obscission does not take place.Wuhan Iron and Steel Plant 6#3200m3 blast furnace maintenance adopts the present invention that ceramic lining plates of cyclone dust remover is reinstalled in addition, and the newly-built 8#3800m3 blast furnace of Wuhan Iron and Steel Plant etc. has adopted the present invention, has all obtained good result of use.
Description of drawings
Fig. 1 is that schematic diagram is divided in cyclone dust collectors inner ceramic liner plate installation region,
Fig. 2 is a ceramic lining plate assemblage gap schematic diagram,
Fig. 3 is the ceramic lining plate scheme of installation,
Fig. 4 is a ceramic lining plate arrangement mode schematic diagram in the zone two,
Fig. 5 a, b are special-shaped ceramics liner plate A plane, profile,
Fig. 6 a, b are special-shaped ceramics liner plate B plane, profile,
Fig. 7 a, b are special-shaped ceramics liner plate C plane, profile,
Fig. 8 a, b are special-shaped ceramics liner plate D plane, profile,
Fig. 9 a, b are special-shaped ceramics liner plate E plane, profile,
Figure 10 a, b are special-shaped ceramics liner plate F plane, profile,
Figure 11 a, b are special-shaped ceramics liner plate G plane, profile,
Figure 12 a, b are special-shaped ceramics liner plate H plane, profile,
Figure 13 is used taper double-screw bolt schematic diagram,
Figure 14 a, b are used tapered cup nut plane, profile.
The specific embodiment
The present invention is described in detail in detail with reference to the accompanying drawings.
Concrete job step is as follows:
1) chooses the ceramic lining plate that material is the zirconium mullite pottery, ceramic lining plate has standard liner plate and special-shaped liner plate, the specification of standard liner plate is 180mm * 120mm * 30mm, the abnormity liner plate has the special-shaped ceramics liner plate different with standard liner plate width and the special-shaped ceramics liner plate of tapering is arranged, one～six totally six regional (see figure 1)s are divided in the installation site of cyclone dust collectors inside
3) ceramic lining plate is installed in zone 1,
Concrete steps are as follows:
(1) ash on deduster inner walls surface, rust etc. are cleaned out earlier with electronic steel wire abrasive machine or wire brush, oil stain acetone scrub,
(2) looking for a level point in the inner walls bottom, is datum mark with this level point, and by the fulcrum of distance weldering every 5 standard liner plate width, each fulcrum constitutes the liner plate installation reference line, and fulcrum adopts the iron plate of 300 * 30 * 3mm.
(3) installation mold is placed on the horizontal line 1/2 place between two fulcrums, then double-screw bolt is inserted in the circular hole of mould, mould and taper double-screw bolt 11 ends to be welded shown in Figure 13 abut against on the hull plate, (trade mark A112) is welded in the double-screw bolt point on the hull plate with Φ 2.5mm stainless steel electrode, then mould is taken off gently, and the double-screw bolt full weld welded, it is benchmark that every layer of arc stud welding scoops out following one deck liner plate, and 1/3 liner plate that misplaces is wide.
The specification of taper bolt 11 (seeing Figure 13) is M12mm * 31mm, reach 18mm, conical section length 13mm, conical section thinner end Φ 6mm.
Die shape is of a size of 6 liner plate width * 1 liner plate length, the middle aperture that bores 6 taper double-screw bolt location in proportion, hole diameter 8 ~ 10mm.Installation mold is made with 2 ~ 3mm steel plate.
(4) upper and lower two-layer ceramic liner plate dislocation 1/3 ± 1mm liner plate is wide, applies the thick clay of 0.5mm at surface of shell, and solidifies through 30 minutes; Around reaching, ceramic lining plate 7 stickup faces are coated with full clay 10 (seeing Fig. 2,3) respectively in the gap, thick 2 ~ the 3mm of clay, then that ceramic lining plate is middle borehole jack is on taper double-screw bolt 11, around the liner plate locating hole, coat clay again, and put anti-skidding red copper locating ring 12 well, the tapered cup nut shown in Figure 14 22 of screwing on welds together tapered cup nut and taper bolt, tapered cup nut is about to ceramic lining plate and is connected on the housing, and bonding clay adopts HSJ-100.Perpendicular between the ceramic lining plate, horizontal gap 8,9 is 2mm≤δ≤3mm (see figure 2).
Bonding clay physical and chemical index:
Al2O3≥56％；
SiO2≤25％；
Operating temperature: 300 ~ 1000 ℃;
With metal shell adhesive strength: normal temperature 〉=5Mpa
300℃≥7Mpa
With ceramic lining plate adhesive strength: normal temperature 〉=5Mpa
300℃≥7Mpa。
The taper of tapered cup nut 28 (seeing Figure 14 a, b) is Φ 27mm than butt end, thinner end Φ 17mm, and length is 13mm internal thread M12mm, is width 2.5mm * degree of depth 3.5mm by taper than butt end face intermediate groove.
The ceramic lining plate of installing in one 1 (see figure 1)s of zone is mainly standard liner plate and special-shaped ceramics liner plate A and special-shaped ceramics liner plate B.
Special-shaped ceramics liner plate A 14 specifications are 180mm * 100mm * 30mm (seeing Fig. 5 a, b), and special-shaped ceramics liner plate B 15 specifications are 180mm * 80mm * 30mm (seeing Fig. 6 a, b), and left view is from the bellmouth center and cuts finding open among the figure.
4) in 22 (see figure 1)s of zone ceramic lining plate is installed, zone two is eddy flow plate installation regions.
Press Wuhan Iron and Steel Plant 3800m
3The cyclone dust remover of blast furnace size design, zone two is divided into into 36 605 * 788mm the zonule (see figure 4) is installed, 13 is the eddy flow plate hole among the figure, this blast furnace eddy flow plate angle of inclination is 55, the ceramic lining plate of installing in the zone two is to cut according to actual needs with the standard liner plate, earlier the liner plate of well cutting is arranged on request in advance in each zonule, the adjusting play, determine the position of centre bore, weld taper bolt then, smear clay and liner plate is installed by the method in zone one again, need divide by Practical Calculation when other blast furnaces adopt the construction of this worker method zonule and liner plate specification are installed
5) by the method that ceramic lining plate is installed the ceramic lining plate (see figure 1) is installed in zone 33 in zone one, the dress ceramic lining plate of peace is mainly standard liner plate and special-shaped ceramics liner plate C 16 and special-shaped ceramics liner plate D17 and special-shaped ceramics liner plate E 18 in the zone three.
The long limit of special-shaped ceramics liner plate C specification is that 180mm, minor face are 161mm, and hypotenuse is 120mm, thick 30mm (seeing Fig. 7 a, b); The long limit of special-shaped ceramics liner plate D specification is that 117mm, minor face are 111mm, and hypotenuse is 180mm, thick 30m (seeing Fig. 8 a, b); The long limit of special-shaped ceramics liner plate E specification is that 55mm, minor face are 45mm, and hypotenuse is 180mm, thick 30mm (seeing Fig. 9 a, b), and left view is from the bellmouth center and cuts finding open among the figure.
6) by the method that ceramic lining plate is installed the ceramic lining plate (see figure 1) is installed in zone 44 in zone one, the dress ceramic lining plate of peace is mainly standard liner plate and special-shaped ceramics liner plate A, B in the zone four.
7) by the method that ceramic lining plate is installed ceramic lining plate is installed in zone 55 in zone one, regional five bottoms and top are used special-shaped ceramics liner plate F 19 and special-shaped ceramics liner plate G 20 respectively.
The thick 30mm of special-shaped ceramics liner plate F, a length of side 130mm, a length of side 180mm faces wide 120mm (seeing Figure 10 a, b) directly.The thick 30mm of special-shaped ceramics liner plate G, a length of side 161mm, a length of side 180mm faces wide 120mm (seeing Figure 11 a, b) directly, and left view is from the bellmouth center and cuts finding open among the figure.
8) by the method that ceramic lining plate is installed the ceramic lining plate (see figure 1) is installed in zone 66 in zone one, regional six tops and a regional interface adopt special-shaped ceramics liner plate H 21.
The thick 30mm of special-shaped ceramics liner plate H, a length of side 166mm, a length of side 180mm faces wide 120mm (seeing Figure 12 a, b) directly, and left view is from the bellmouth center and cuts finding open among the figure.
Claims (2)
1. the installation method of a ceramic lining plates of cyclone dust remover of blast furnace is characterized in that concrete job step is as follows:
1) chooses the ceramic lining plate that material is the zirconium mullite pottery, ceramic lining plate has standard liner plate and special-shaped liner plate, the specification of standard liner plate is 180mm * 120mm * 30mm, and special-shaped liner plate has the special-shaped ceramics liner plate different with standard liner plate width and the special-shaped ceramics liner plate of tapering is arranged
2) divide one～six totally six zones in the installation site of cyclone dust collectors inside,
3) ceramic lining plate is installed in zone one,
Concrete steps are as follows:
(1) with electronic steel wire abrasive machine or wire brush ash, the rust on cyclone dust collectors inner walls surface are cleaned out earlier, oil stain acetone scrub,
(2) looking for a level point in the inner walls bottom, is datum mark with this level point, and by the fulcrum of distance weldering every 5 standard liner plate width, each fulcrum constitutes the liner plate installation reference line,
(3) installation mold is placed on the horizontal line 1/2 place between two fulcrums, then the taper double-screw bolt is inserted in the circular hole of mould, a mould and taper double-screw bolt end to be welded abuts against on the hull plate, with stainless steel electrode taper double-screw bolt point is welded on the hull plate, then mould is taken off gently, and taper double-screw bolt full weld is welded, it is benchmark that every layer of taper arc stud welding scoops out following one deck liner plate, and 1/3 liner plate that misplaces is wide
Die shape is of a size of 6 liner plate width * 1 liner plate length, the middle circular hole that bores 6 taper double-screw bolt location in proportion,
(4) upper and lower two-layer ceramic liner plate is installed dislocation 1/3 liner plate wide ± 1mm applies the thick clay of 0.5mm at surface of shell, and solidified through 30 minutes; Around reaching, liner plate stickup face is coated with full clay respectively, thick 2 ~ the 3mm of clay, then that liner plate is middle borehole jack is on the taper double-screw bolt, around the hole in the middle of the liner plate, coat clay again, and put anti-skidding red copper locating ring well, the tapered cup nut of screwing on is in the same place tapered cup nut and taper stud welding, tapered cup nut is about to ceramic lining plate and is connected on the housing
The ceramic lining plate of installing in the zone one is mainly the standard liner plate and specification is the special-shaped ceramics liner plate A of 180mm * 100mm * 30mm, the special-shaped ceramics liner plate B that specification is 180mm * 80mm * 30mm,
4) ceramic lining plate is installed in zone two, zone two is eddy flow plate installation regions, position of opening according to the eddy flow plate is divided into several installation zonules, earlier ceramic lining plate arranged on request in advance in each zonule, the adjusting play, determined the position of centre bore, weld the taper double-screw bolt then, smear clay and liner plate is installed by the method in zone one again
The ceramic lining plate of installing in the zone two is mainly the standard liner plate,
5) by the method that ceramic lining plate is installed ceramic lining plate is installed in zone three in zone one, the ceramic lining plate of installing in the zone three is that the long limit of standard liner plate and specification is that 180mm, minor face are 161mm, hypotenuse is 120mm, the special-shaped ceramics liner plate C of thick 30mm, the long limit of specification are that 117mm, minor face are 111mm, hypotenuse is 180mm, and the special-shaped ceramics liner plate D of thick 30mm, the long limit of specification are that 55mm, minor face are 45mm, and hypotenuse is 180mm, the special-shaped ceramics liner plate E of thick 30mm
6) by the method that ceramic lining plate is installed ceramic lining plate is installed in zone four in zone one, the ceramic lining plate of installing in the zone four is mainly standard liner plate and special-shaped ceramics liner plate A, B,
7) by the method that ceramic lining plate is installed ceramic lining plate is installed in zone five in zone one, thick 30mm is used on five bottoms, zone and top respectively, one length of side 130mm, one length of side 180mm, face the special-shaped ceramics liner plate F of wide 120mm, thick 30mm directly, a length of side 161mm, a length of side 180mm, face the special-shaped ceramics liner plate G of wide 120mm directly
8) by the method that ceramic lining plate is installed in zone one installation ceramic lining plate in zone six, regional six tops and a regional interface adopt thick 30mm, a length of side 166mm, and a length of side 180mm faces the special-shaped ceramics liner plate H of wide 120mm directly.
2. the installation method of a kind of ceramic lining plates of cyclone dust remover of blast furnace according to claim 1 is characterized in that perpendicular between the ceramic lining plate, horizontal gap (8,9) δ is 2mm≤δ≤3mm.
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| CN2009100632814A CN101642733B (en) | 2009-07-24 | 2009-07-24 | Method for installing ceramic lining plates of cyclone dust remover of blast furnace |
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| CN113210146B (en) * | 2021-05-31 | 2022-10-21 | 江西理工大学 | Hydrocyclone with self-cleaning function |
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