CN114752716A - Large metallurgical slag pot and manufacturing method thereof - Google Patents

Large metallurgical slag pot and manufacturing method thereof Download PDF

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Publication number
CN114752716A
CN114752716A CN202210473628.8A CN202210473628A CN114752716A CN 114752716 A CN114752716 A CN 114752716A CN 202210473628 A CN202210473628 A CN 202210473628A CN 114752716 A CN114752716 A CN 114752716A
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grid structure
tank body
grid
prefabricated plates
percent
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CN114752716B (en
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徐志华
王志强
王心一
郑吉红
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Wuhan Iron And Steel Group Refractory Materials Co ltd
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Wuhan Iron And Steel Group Refractory Materials Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C21B3/10—Slag pots; Slag cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/40—Metallic constituents or additives not added as binding phase
    • C04B2235/402—Aluminium
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/52—Constituents or additives characterised by their shapes
    • C04B2235/5208—Fibers
    • C04B2235/5212—Organic
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/066—Receptacle features where the slag is treated
    • C21B2400/072—Tanks to collect the slag, e.g. water tank
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

The invention relates to the technical field of ferrous metallurgy, and discloses a large-scale metallurgical slag tank which comprises a tank body, wherein a lower-layer grid structure and an upper-layer grid structure are arranged in the tank body, the lower-layer grid structure and the upper-layer grid structure are both processed by grid refractory materials, the tank body is processed by the tank body refractory materials, and the grid refractory materials comprise the following components in percentage by weight: and (3) recovering used silica bricks: 50-70% of carbon-containing reclaimed materials: 5-20% of aluminum reclaimed materials: 5-20%, calcium aluminate cement: 3-15% of a water reducing agent: 0.1-0.5%, explosion-proof agent: 0.05-0.2%, and the tank body refractory material comprises the following components in percentage by weight: and (3) recovering used silica bricks: 50-70% of carbon-containing reclaimed materials: 5-20% of aluminum reclaimed materials: 5-20%, calcium aluminate cement: 3-15% of a plasticizer: 0.1 to 5 percent. The invention also discloses a manufacturing method of the large-scale metallurgical slag pot. The large-scale metallurgical slag pot and the manufacturing method thereof solve the problem of large slag blocks and the problems that the grid is difficult to assemble and disassemble and difficult to separate from slag.

Description

Large metallurgical slag pot and manufacturing method thereof
Technical Field
The invention relates to the technical field of ferrous metallurgy, in particular to a large-scale metallurgical slag pot and a manufacturing method thereof.
Background
The metallurgical slag pot is an important container for containing metallurgical steel slag or iron slag in ferrous metallurgy, and is generally in a semicircular bowl shape with a large upper part and a small lower part. After the metallurgical slag tank is subjected to slagging in a steel plant or an iron plant, the metallurgical slag tank is transported to a treatment workshop, and the metallurgical slag tank is turned over to pour out slag. In order to solve the problem that steel slag or iron slag blocks are too large and difficult to treat, at present, most steel mills are provided with grids in various shapes in metallurgical slag tanks to separate the steel slag or the iron slag into small blocks with similar sizes, so that the steel slag or the iron slag is convenient to treat and recycle, but the current metallurgical slag tanks still have the following problems:
1) the height of a large metallurgical slag pot such as a part of converter slag pots exceeds 4 meters, a common single-layer grid cannot separate slag blocks into proper small blocks, and design optimization is needed;
2) the fixing and dismounting of the grating are troublesome.
3) After the grid is added, the surrounding space of the metallurgical slag tank is narrow, refractory materials are difficult to construct, and the thickness uniformity cannot be ensured;
4) the grid material is sintered by reaction with steel slag or iron slag, and the grid and the slag are separated manually or mechanically.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a large metallurgical slag pot and a manufacturing method thereof, which solve the problem of large slag blocks and solve the problems that a grid is difficult to assemble and disassemble and is difficult to separate from slag.
In order to achieve the purpose, the large-scale metallurgical slag pot designed by the invention comprises a pot body, wherein a lower-layer grating structure and an upper-layer grating structure are arranged in the pot body from bottom to top, the lower-layer grating structure is a groined structure with two transverse sides and two longitudinal sides, the upper-layer grating structure is a three transverse sides and three longitudinal sides, the lower-layer grating structure and the upper-layer grating structure are both processed by grating resistant materials, the pot body is processed by pot body resistant materials, and the grating resistant materials comprise the following components in percentage by weight: and (3) recovering used silica bricks: 50-70% of carbon-containing regenerated material: 5-20% of aluminum reclaimed materials: 5-20%, calcium aluminate cement: 3-15% of a water reducing agent: 0.1-0.5%, explosion-proof agent: 0.05-0.2%, wherein the tank body refractory material comprises the following components in percentage by weight: and (3) recovering used silica bricks: 50-70% of carbon-containing reclaimed materials: 5-20% of aluminum reclaimed materials: 5-20%, calcium aluminate cement: 3-15% of a plasticizer: 0.1 to 5 percent.
Preferably, the lower grid structure comprises two transverse lower refractory precast slabs and two longitudinal lower refractory precast slabs, the transverse lower refractory precast slabs are provided with two clamping grooves communicated with the bottom, the longitudinal lower refractory precast slabs are provided with two clamping grooves communicated with the top, and the transverse lower refractory precast slabs and the longitudinal lower refractory precast slabs are spliced through the clamping grooves to form the lower grid structure.
Preferably, the upper grid structure comprises three transverse upper refractory prefabricated panels and three longitudinal upper refractory prefabricated panels, the transverse upper refractory prefabricated panels are provided with three clamping grooves communicated with the bottom, the longitudinal upper refractory prefabricated panels are provided with three clamping grooves communicated with the top, and the transverse upper refractory prefabricated panels and the longitudinal upper refractory prefabricated panels are spliced into the upper grid structure through the clamping grooves.
Preferably, a grid positioning clamping column for positioning the lower grid structure and the upper grid structure is arranged in the tank body.
Preferably, a pressing strip is arranged on the periphery of the inner side of the upper edge of the tank body.
Preferably, the SiO of the recycled silica brick2The content is more than or equal to 90 percent, the carbon-containing reclaimed material is one or more of recycled alumina-magnesia-carbon bricks, recycled alumina-carbon bricks and recycled aluminum silicon carbide-carbon bricks, the content of C is more than or equal to 5 percent, the granularity is less than 5mm, the aluminum reclaimed material is one or more of recycled corundum bricks, recycled high-alumina bricks, recycled corundum castable and recycled alumina castable, wherein the Al is Al2O3More than or equal to 48 percent, the granularity is less than 0.088mm, the water reducing agent is one or more of sodium tripolyphosphate and sodium hexametaphosphate, the explosion-proof agent is one or more of organic fiber and metal aluminum powder, the plasticizer is one or more of Guangxi white clay, ball clay, sodium carboxymethylcellulose and sodium polyacrylate, and the Al of the calcium aluminate cement 2O3The content is more than or equal to 69 percent, and the content of CaO is 26-30 percent.
Preferably, the height of the lower grid structure and the upper grid structure is 1.5-2 m.
Preferably, the thickness of the grid positioning clamping column is 30-50 mm.
Preferably, the width of the batten is 20-30 mm.
A manufacturing method of the large-scale metallurgical slag pot comprises the following steps:
A) manufacturing components to manufacture a tank body, a lower grid structure and an upper grid structure;
B) welding a grid positioning clamping column on the tank body, and welding pressing strips on the periphery of the inner side of the upper edge of the tank body;
C) installing the lower-layer grating structure, and fixing the lower-layer grating structure through the grating positioning clamping columns;
D) performing spray repair on the connection part of the tank body and the lower grid structure by adopting a semi-dry method, wherein the spray repair thickness is 50-80 mm;
E) installing the upper-layer grid structure, fixing the upper-layer grid structure through the grid positioning clamping columns, wherein the distance between the top of the upper-layer grid structure and the upper edge of the tank body is 100-800 mm;
F) performing spray repair on other parts of the inner side of the tank body by adopting a semidry method, wherein the spray repair thickness is 50-80 mm, and the spray repair height is flush with the height of the tank body, so as to obtain a blank of the slag tank;
G) placing the slag pot blank at a normal temperature for curing, wherein the curing time is more than 24 hours;
H) And baking the slag pot blank to obtain the large-scale metallurgical slag pot.
Compared with the prior art, the invention has the following advantages:
1. the construction is carried out by using a double-layer grating assembly mode, so that the problem that the segmented slag blocks are too large due to a large slag tank with the height of more than 4 meters is effectively solved;
2. the grid resistant material and the tank resistant material both use recycled silica brick granules, because the main component of the silica brick is silicon dioxide, seven crystal variants and one amorphous variant exist, and the used grid resistant material and the used tank resistant material can generate larger shrinkage due to crystal form transformation in the process of reducing the temperature, can separate slag blocks from the resistant material, play a self-cleaning role, and do not need to use manual work or mechanical equipment for separation;
3. the refractory material is added with the carbon-containing regenerated material containing a certain amount of carbon, so that the sintering of the slag block and the refractory material can be effectively prevented, and the separation difficulty of the slag block and the refractory material is reduced;
4. the inner side part of the tank body is sprayed and repaired by a semi-dry method, so that the manual strength can be effectively reduced, the parts which are difficult to construct can be effectively sprayed and repaired, and the uniformity of the construction thickness is ensured;
5. the grid structure is positioned through the grid positioning clamping column, the inner side of the tank body between the upper end of the upper grid structure and the tank body pressing strip is sprayed and repaired, the upper grid structure is effectively fixed, other pressing plates or pressing strips are not needed for fixing, and the slag tank structure is simplified.
Drawings
FIG. 1 is a schematic structural view of a large metallurgical slag ladle according to the present invention;
FIG. 2 is a schematic view of components of the lower grid structure of FIG. 1;
fig. 3 is a schematic view of the components of the upper grid structure of fig. 1.
The components in the figures are numbered as follows:
the structure comprises a tank body 1, a lower-layer grid structure 2, an upper-layer grid structure 3, a transverse lower-layer refractory precast slab 4, a longitudinal lower-layer refractory precast slab 5, a clamping groove 6, a transverse upper-layer refractory precast slab 7, a longitudinal upper-layer refractory precast slab 8, grid positioning clamping columns 9 and a pressing strip 10.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
Example 1
As shown in figure 1, a large-scale metallurgical slag pot, including a jar body 1, supreme lower floor's grid structure 2 and the upper grid structure 3 of being equipped with are down followed to jar in 1, lower floor's grid structure 2 is two horizontal two vertical groined structures, upper grid structure 3 is three horizontal three vertical structures, lower floor's grid structure 2 and upper grid structure 3 all form through the processing of the resistant material of grid, jar body 1 forms through the processing of jar body resistant material, jar body 1 is inside to be equipped with the grid location card post 9 with lower floor's grid structure 2 and upper grid structure 3 location, jar body 1 is gone up along inboard being equipped with layering 10 all around.
Wherein, as shown in the combination of fig. 1 and fig. 2, the lower grid structure 2 comprises two transverse lower fireproof prefabricated plates 4 and two longitudinal lower fireproof prefabricated plates 5, the transverse lower fireproof prefabricated plates 4 are provided with two clamping grooves 6 communicated with the bottom, the longitudinal lower fireproof prefabricated plates 5 are provided with two clamping grooves 6 communicated with the top, the transverse lower fireproof prefabricated plates 4 and the longitudinal lower fireproof prefabricated plates 5 are spliced into the lower grid structure 2 through the clamping grooves 6, the upper grid structure 3 comprises three transverse upper fireproof prefabricated plates 7 and three longitudinal upper fireproof prefabricated plates 8, the transverse upper fireproof prefabricated plates 7 are provided with three clamping grooves 6 communicated with the bottom, the longitudinal upper fireproof prefabricated plates 8 are provided with three clamping grooves 6 communicated with the top, and the transverse upper fireproof prefabricated plates 7 and the longitudinal upper fireproof prefabricated plates 8 are spliced into the upper grid structure 3 through the clamping grooves 6.
In the embodiment, the grid refractory comprises the following components in percentage by weight:
and (3) recovering used silica bricks: 70% of recycled alumina-magnesia carbon bricks: 16.7 percent, recycled high-alumina brick: 5%, calcium aluminate cement: 8%, sodium tripolyphosphate: 0.1%, organic fiber: 0.2 percent.
The tank body refractory material comprises the following components in percentage by weight:
and (3) recovering used silica bricks: 67 percent of recycled magnesia carbon brick: 20%, and recycling the used corundum bricks: 5%, calcium aluminate cement: 3% of Guangxi white mud: 5 percent.
Wherein the SiO of the recycled silica brick2The content is more than or equal to 90 percent, the C content of the recycled alumina-magnesia carbon brick and the recycled magnesia carbon brick is more than or equal to 5 percent, and the grains areAl of recycled high-alumina brick and recycled corundum brick with the degree of less than 5mm2O3The content is more than or equal to 48 percent, the granularity is less than 0.088mm, and Al of the calcium aluminate cement2O3The content is more than or equal to 69 percent, and the content of CaO is 30 percent.
In addition, the height of the lower layer grid structure 2 and the upper layer grid structure 3 is 1.5m, the thickness of the grid positioning clamping column 9 is 30mm, and the width of the pressing strip 10 is 20 mm.
The manufacturing method of the embodiment comprises the following steps:
A) manufacturing components to manufacture a tank body 1, a lower grid structure 2 and an upper grid structure 3;
B) welding a grid positioning clamping column 9 on the tank body 1, and welding pressing strips 10 on the periphery of the inner side of the upper edge of the tank body 1;
C) installing the lower layer grating structure 2, and fixing the lower layer grating structure 2 through a grating positioning clamping column 9;
D) spray-repairing the connection part between the tank body 1 and the lower grid structure 2 by a semi-dry method, wherein the spray-repairing thickness is 50 mm;
E) installing an upper-layer grid structure 3, fixing the upper-layer grid structure 3 through a grid positioning clamping column 9, wherein the distance between the top of the upper-layer grid structure 3 and the upper edge of the tank body 1 is 100 mm;
F) performing spray repair on other parts of the inner side of the tank body 1 by adopting a semidry method, wherein the spray repair thickness is 50mm, and the spray repair height is flush with the height of the tank body 1, so as to obtain a slag tank blank;
G) Placing the slag pot blank at a normal temperature for curing for 24 hours;
H) and baking the slag pot blank to obtain the large-scale metallurgical slag pot.
Example 2
As shown in fig. 1, a large-scale metallurgical slag ladle, which comprises a tank body 1, supreme lower floor grid structure 2 and the upper grid structure 3 of being equipped with are down followed to 1 internal, lower floor grid structure 2 is two horizontal two vertical groined structures, upper grid structure 3 is three horizontal three vertical structures, lower floor grid structure 2 and upper grid structure 3 all form through the processing of the resistant material of grid, 1 internal through the processing of jar body resistant material of jar form, 1 internal portion of jar is equipped with the grid location card post 9 with lower floor grid structure 2 and the 3 location of upper grid structure, 1 internal edge inboard of jar is equipped with layering 10 all around.
Wherein, as shown in the combination of fig. 1 and fig. 2, the lower grid structure 2 comprises two transverse lower fireproof prefabricated plates 4 and two longitudinal lower fireproof prefabricated plates 5, the transverse lower fireproof prefabricated plates 4 are provided with two clamping grooves 6 communicated with the bottom, the longitudinal lower fireproof prefabricated plates 5 are provided with two clamping grooves 6 communicated with the top, the transverse lower fireproof prefabricated plates 4 and the longitudinal lower fireproof prefabricated plates 5 are spliced into the lower grid structure 2 through the clamping grooves 6, the upper grid structure 3 comprises three transverse upper fireproof prefabricated plates 7 and three longitudinal upper fireproof prefabricated plates 8, the transverse upper fireproof prefabricated plates 7 are provided with three clamping grooves 6 communicated with the bottom, the longitudinal upper fireproof prefabricated plates 8 are provided with three clamping grooves 6 communicated with the top, and the transverse upper fireproof prefabricated plates 7 and the longitudinal upper fireproof prefabricated plates 8 are spliced into the upper grid structure 3 through the clamping grooves 6.
In the embodiment, the grid refractory comprises the following components in percentage by weight:
and (3) recovering used silica bricks: 50 percent of recycled aluminum carbon brick: 20 percent, recycled high-alumina brick: 20%, calcium aluminate cement: 9.7%, sodium tripolyphosphate: 0.15%, organic fiber: 0.15 percent.
The tank body refractory material comprises the following components in percentage by weight:
and (3) recovering used silica bricks: 50 percent, recycling the used aluminum silicon carbide carbon brick: 20 percent, and the corundum castable after recovery: 20%, calcium aluminate cement: 7% and Guangxi white mud: 3 percent.
Wherein the SiO of the recycled silica brick2The content is more than or equal to 95 percent, the C content of the recycled aluminum-carbon brick and the recycled aluminum-silicon-carbide-carbon brick is more than or equal to 6 percent, the granularity is less than 5mm, and the Al content of the recycled high-aluminum brick and the recycled corundum castable is more than or equal to 95 percent2O3The content is more than or equal to 48 percent, the granularity is less than 0.088mm, and Al of the calcium aluminate cement2O3The content is more than or equal to 70 percent, and the CaO content is 26 percent.
In addition, the height of the lower layer grid structure 2 and the upper layer grid structure 3 is 2m, the thickness of the grid positioning clamping column 9 is 50mm, and the width of the pressing strip 10 is 30 mm.
The manufacturing method of the embodiment comprises the following steps:
A) manufacturing a tank body 1, a lower-layer grid structure 2 and an upper-layer grid structure 3 by using components;
B) welding a grid positioning clamping column 9 on the tank body 1, and welding a pressing strip 10 on the periphery of the inner side of the upper edge of the tank body 1;
C) Installing the lower layer grating structure 2, and fixing the lower layer grating structure 2 through a grating positioning clamping column 9;
D) spray-repairing the connection part between the tank body 1 and the lower grid structure 2 by adopting a semi-dry method, wherein the spray-repairing thickness is 80 mm;
E) installing an upper-layer grid structure 3, fixing the upper-layer grid structure 3 through a grid positioning clamping column 9, wherein the distance between the top of the upper-layer grid structure 3 and the upper edge of the tank body 1 is 800 mm;
F) performing spray repair on other parts of the inner side of the tank body 1 by adopting a semidry method, wherein the spray repair thickness is 80mm, and the spray repair height is flush with the height of the tank body 1 to obtain a slag tank blank;
G) placing the blank body of the slag pot at a normal temperature for curing for 30 hours;
H) and baking the slag pot blank to obtain the large-scale metallurgical slag pot.
Example 3
As shown in figure 1, a large-scale metallurgical slag pot, including a jar body 1, supreme lower floor's grid structure 2 and the upper grid structure 3 of being equipped with are down followed to jar in 1, lower floor's grid structure 2 is two horizontal two vertical groined structures, upper grid structure 3 is three horizontal three vertical structures, lower floor's grid structure 2 and upper grid structure 3 all form through the processing of the resistant material of grid, jar body 1 forms through the processing of jar body resistant material, jar body 1 is inside to be equipped with the grid location card post 9 with lower floor's grid structure 2 and upper grid structure 3 location, jar body 1 is gone up along inboard being equipped with layering 10 all around.
Wherein, as shown in the combination of fig. 1 and fig. 2, the lower grid structure 2 comprises two transverse lower fireproof prefabricated plates 4 and two longitudinal lower fireproof prefabricated plates 5, the transverse lower fireproof prefabricated plates 4 are provided with two clamping grooves 6 communicated with the bottom, the longitudinal lower fireproof prefabricated plates 5 are provided with two clamping grooves 6 communicated with the top, the transverse lower fireproof prefabricated plates 4 and the longitudinal lower fireproof prefabricated plates 5 are spliced into the lower grid structure 2 through the clamping grooves 6, the upper grid structure 3 comprises three transverse upper fireproof prefabricated plates 7 and three longitudinal upper fireproof prefabricated plates 8, the transverse upper fireproof prefabricated plates 7 are provided with three clamping grooves 6 communicated with the bottom, the longitudinal upper fireproof prefabricated plates 8 are provided with three clamping grooves 6 communicated with the top, and the transverse upper fireproof prefabricated plates 7 and the longitudinal upper fireproof prefabricated plates 8 are spliced into the upper grid structure 3 through the clamping grooves 6.
In the embodiment, the grid refractory comprises the following components in percentage by weight:
and (3) recovering used silica bricks: 61.7 percent of recycled alumina-magnesia-carbon brick: 18% of recycled alumina castable: 17%, calcium aluminate cement: 3%, sodium hexametaphosphate: 0.1%, organic fiber: 0.2 percent.
The tank body refractory material comprises the following components in percentage by weight:
And (3) recovering used silica bricks: 55% of recycled aluminum carbon bricks: 15% and recycled high-alumina brick: 15%, calcium aluminate cement: 13%, ball clay: 2 percent.
Wherein the SiO of the recycled silica brick2The content is more than or equal to 90 percent, the C content of the recycled alumina-magnesia carbon brick and the recycled alumina-carbon brick is more than or equal to 5 percent, the granularity is less than 5mm, and the Al content of the recycled alumina castable and the recycled high-alumina brick is less than or equal to 5mm2O3The content is more than or equal to 48 percent, the granularity is less than 0.088mm, and Al of the calcium aluminate cement2O3The content is more than or equal to 70 percent, and the CaO content is 28 percent.
In addition, the height of the lower layer grid structure 2 and the upper layer grid structure 3 is 1.8m, the thickness of the grid positioning clamping column 9 is 40mm, and the width of the pressing strip 10 is 25 mm.
The manufacturing method of the embodiment comprises the following steps:
A) manufacturing a tank body 1, a lower-layer grid structure 2 and an upper-layer grid structure 3 by using components;
B) welding a grid positioning clamping column 9 on the tank body 1, and welding a pressing strip 10 on the periphery of the inner side of the upper edge of the tank body 1;
C) installing the lower layer grating structure 2, and fixing the lower layer grating structure 2 through a grating positioning clamping column 9;
D) spray-repairing the connection part between the tank body 1 and the lower grid structure 2 by a semi-dry method, wherein the spray-repairing thickness is 60 mm;
E) installing the upper-layer grid structure 3, fixing the upper-layer grid structure 3 through a grid positioning clamping column 9, wherein the distance between the top of the upper-layer grid structure 3 and the upper edge of the tank body 1 is 500 mm;
F) Performing spray repair on other parts of the inner side of the tank body 1 by adopting a semidry method, wherein the spray repair thickness is 60mm, and the spray repair height is flush with the height of the tank body 1 to obtain a blank of the slag tank;
G) placing the slag pot blank at a normal temperature for curing, wherein the curing time is 25 hours;
H) and baking the slag pot blank to obtain the large-scale metallurgical slag pot.
Example 4
As shown in figure 1, a large-scale metallurgical slag pot, including a jar body 1, supreme lower floor's grid structure 2 and the upper grid structure 3 of being equipped with are down followed to jar in 1, lower floor's grid structure 2 is two horizontal two vertical groined structures, upper grid structure 3 is three horizontal three vertical structures, lower floor's grid structure 2 and upper grid structure 3 all form through the processing of the resistant material of grid, jar body 1 forms through the processing of jar body resistant material, jar body 1 is inside to be equipped with the grid location card post 9 with lower floor's grid structure 2 and upper grid structure 3 location, jar body 1 is gone up along inboard being equipped with layering 10 all around.
Wherein, as shown in the combination of fig. 1 and fig. 2, the lower grid structure 2 comprises two transverse lower fireproof prefabricated plates 4 and two longitudinal lower fireproof prefabricated plates 5, the transverse lower fireproof prefabricated plates 4 are provided with two clamping grooves 6 communicated with the bottom, the longitudinal lower fireproof prefabricated plates 5 are provided with two clamping grooves 6 communicated with the top, the transverse lower fireproof prefabricated plates 4 and the longitudinal lower fireproof prefabricated plates 5 are spliced into the lower grid structure 2 through the clamping grooves 6, the upper grid structure 3 comprises three transverse upper fireproof prefabricated plates 7 and three longitudinal upper fireproof prefabricated plates 8, the transverse upper fireproof prefabricated plates 7 are provided with three clamping grooves 6 communicated with the bottom, the longitudinal upper fireproof prefabricated plates 8 are provided with three clamping grooves 6 communicated with the top, and the transverse upper fireproof prefabricated plates 7 and the longitudinal upper fireproof prefabricated plates 8 are spliced into the upper grid structure 3 through the clamping grooves 6.
In the embodiment, the grid refractory comprises the following components in percentage by weight:
and (3) recovering used silica bricks: 65 percent, and the recycled magnesia carbon bricks: 5% of recycled high-alumina brick: 14.45%, calcium aluminate cement: 15%, sodium hexametaphosphate: 0.5%, metal aluminum powder: 0.05 percent.
The tank body refractory material comprises the following components in percentage by weight:
and (3) recovering used silica bricks: 60 percent, recycling the used alumina-magnesia-carbon brick: 12%, and recycled corundum bricks: 15%, calcium aluminate cement: 12.9%, sodium polyacrylate: 0.1 percent.
Wherein the SiO of the recycled silica brick2The content is more than or equal to 90 percent, the C content of the recycled magnesia carbon brick and the recycled alumina-magnesia carbon brick is more than or equal to 5 percent, the granularity is less than 5mm, and the Al content of the recycled high-alumina brick and the recycled corundum brick is less than or equal to 5 percent2O3The content is more than or equal to 48 percent, the granularity is less than 0.088mm, and Al of the calcium aluminate cement2O3The content is more than or equal to 72 percent, and the CaO content is 29 percent.
In addition, the height of the lower layer grid structure 2 and the upper layer grid structure 3 is 1.6m, the thickness of the grid positioning clamping column 9 is 35mm, and the width of the pressing strip 10 is 25 mm.
The manufacturing method of the embodiment comprises the following steps:
A) manufacturing a tank body 1, a lower-layer grid structure 2 and an upper-layer grid structure 3 by using components;
B) welding a grid positioning clamping column 9 on the tank body 1, and welding a pressing strip 10 on the periphery of the inner side of the upper edge of the tank body 1;
C) Installing the lower layer grating structure 2, and fixing the lower layer grating structure 2 through a grating positioning clamping column 9;
D) spray-repairing the connection part between the tank body 1 and the lower grid structure 2 by adopting a semi-dry method, wherein the spray-repairing thickness is 70 mm;
E) installing an upper-layer grid structure 3, fixing the upper-layer grid structure 3 through a grid positioning clamping column 9, wherein the distance between the top of the upper-layer grid structure 3 and the upper edge of the tank body 1 is 400 mm;
F) performing spray repair on other parts of the inner side of the tank body 1 by adopting a semidry method, wherein the spray repair thickness is 70mm, and the spray repair height is flush with the height of the tank body 1 to obtain a blank of the slag tank;
G) placing the slag pot blank at a normal temperature for curing, wherein the curing time is 25 hours;
H) and baking the slag pot blank to obtain the large-scale metallurgical slag pot.
Example 5
As shown in figure 1, a large-scale metallurgical slag pot, including a jar body 1, supreme lower floor's grid structure 2 and the upper grid structure 3 of being equipped with are down followed to jar in 1, lower floor's grid structure 2 is two horizontal two vertical groined structures, upper grid structure 3 is three horizontal three vertical structures, lower floor's grid structure 2 and upper grid structure 3 all form through the processing of the resistant material of grid, jar body 1 forms through the processing of jar body resistant material, jar body 1 is inside to be equipped with the grid location card post 9 with lower floor's grid structure 2 and upper grid structure 3 location, jar body 1 is gone up along inboard being equipped with layering 10 all around.
Wherein, as shown in the combination of fig. 1 and fig. 2, the lower grid structure 2 comprises two transverse lower fireproof prefabricated plates 4 and two longitudinal lower fireproof prefabricated plates 5, the transverse lower fireproof prefabricated plates 4 are provided with two clamping grooves 6 communicated with the bottom, the longitudinal lower fireproof prefabricated plates 5 are provided with two clamping grooves 6 communicated with the top, the transverse lower fireproof prefabricated plates 4 and the longitudinal lower fireproof prefabricated plates 5 are spliced into the lower grid structure 2 through the clamping grooves 6, the upper grid structure 3 comprises three transverse upper fireproof prefabricated plates 7 and three longitudinal upper fireproof prefabricated plates 8, the transverse upper fireproof prefabricated plates 7 are provided with three clamping grooves 6 communicated with the bottom, the longitudinal upper fireproof prefabricated plates 8 are provided with three clamping grooves 6 communicated with the top, and the transverse upper fireproof prefabricated plates 7 and the longitudinal upper fireproof prefabricated plates 8 are spliced into the upper grid structure 3 through the clamping grooves 6.
In the embodiment, the grid refractory comprises the following components in percentage by weight:
and (3) recovering used silica bricks: 65 percent, and the recycled magnesia carbon bricks: 12% of recycled corundum bricks: 12%, calcium aluminate cement: 10.8%, sodium hexametaphosphate: 0.15%, metal aluminum powder: 0.05 percent.
The tank body refractory material comprises the following components in percentage by weight:
and (3) recovering used silica bricks: 70 percent, recycling the used alumina-magnesia-carbon bricks: 5 percent, recycling the used high-alumina brick: 7%, calcium aluminate cement: 15%, sodium carboxymethylcellulose: 3 percent.
WhereinRecovery of SiO from used silica bricks2The content is more than or equal to 90 percent, the C content of the recycled magnesia carbon brick and the recycled alumina-magnesia carbon brick is more than or equal to 5 percent, the granularity is less than 5mm, and the Al content of the recycled corundum brick and the recycled alumina brick2O3The content is more than or equal to 48 percent, the granularity is less than 0.088mm, and Al of the calcium aluminate cement2O3The content is more than or equal to 69 percent, and the content of CaO is 30 percent.
In addition, the height of the lower layer grid structure 2 and the upper layer grid structure 3 is 2m, the thickness of the grid positioning clamping column 9 is 50mm, and the width of the pressing strip 10 is 30 mm.
The manufacturing method of the embodiment comprises the following steps:
A) manufacturing a tank body 1, a lower-layer grid structure 2 and an upper-layer grid structure 3 by using components;
B) welding a grid positioning clamping column 9 on the tank body 1, and welding a pressing strip 10 on the periphery of the inner side of the upper edge of the tank body 1;
C) installing the lower layer grating structure 2, and fixing the lower layer grating structure 2 through a grating positioning clamping column 9;
D) spray-repairing the connection part between the tank body 1 and the lower grid structure 2 by adopting a semi-dry method, wherein the spray-repairing thickness is 70 mm;
E) installing an upper-layer grid structure 3, fixing the upper-layer grid structure 3 through a grid positioning clamping column 9, wherein the distance between the top of the upper-layer grid structure 3 and the upper edge of the tank body 1 is 600 mm;
F) performing spray repair on other parts of the inner side of the tank body 1 by adopting a semidry method, wherein the spray repair thickness is 70mm, and the spray repair height is flush with the height of the tank body 1, so as to obtain a slag tank blank;
G) Placing the slag pot blank at a normal temperature for curing for 28 hours;
H) and baking the slag pot blank to obtain the large-scale metallurgical slag pot.
The strength of the grid and tank resistant materials obtained in the above examples are shown in table 1
TABLE 1 Strength of grid resistant material and tank resistant material
Figure BDA0003624193690000121
As can be seen from table 1, the strength of the grid resistant material and the tank resistant material can meet the use requirement.
According to the large-scale metallurgical slag pot and the manufacturing method thereof, the construction is carried out in a double-layer grid assembly mode, so that the problem that the segmented slag blocks are too large when the height of the large-scale slag pot exceeds 4 m is effectively solved; the grid resistant material and the tank resistant material both use recycled silica brick granules, because the main component of the silica brick is silicon dioxide, seven crystal variants and one amorphous variant exist, and the used grid resistant material and the used tank resistant material can generate larger shrinkage due to crystal form transformation in the process of reducing the temperature, can separate slag blocks from the resistant material, play a self-cleaning role, and do not need to use manual work or mechanical equipment for separation; the refractory material is added with the carbon-containing regenerated material which contains a certain amount of carbon, so that the sintering of the slag blocks and the refractory material can be effectively prevented, and the separation difficulty of the slag blocks and the refractory material is reduced; the semi-dry method is used for spray repair construction of the inner side part of the tank body, so that the manual strength can be effectively reduced, the parts which are difficult to construct can be effectively sprayed and repaired, and the uniformity of the construction thickness is ensured; the grid structure is positioned through the grid positioning clamping columns 9, the inner side of the tank body 1 between the upper end of the upper grid structure 3 and the pressing strip 10 of the tank body 1 is sprayed and repaired, the upper grid structure 3 is effectively fixed, other pressing plates or pressing strips are not needed for fixing, and the slag tank structure is simplified.

Claims (10)

1. A large-scale metallurgical slag ladle, includes jar body (1), its characterized in that: supreme lower floor's grid structure (2) and upper grid structure (3) of being equipped with are followed in jar body (1), lower floor's grid structure (2) are two horizontal two groined structures of indulging, upper grid structure (3) are three horizontal three vertical structures, lower floor's grid structure (2) and upper grid structure (3) all form through the processing of the resistant material of grid, jar body (1) forms through the processing of jar body resistant material, the resistant material of grid is according to weight percent, including following component: and (3) recovering used silica bricks: 50-70% of carbon-containing regenerated material: 5-20% of aluminum reclaimed materials: 5-20%, calcium aluminate cement: 3-15% of water reducing agent: 0.1-0.5%, explosion-proof agent: 0.05-0.2%, wherein the tank body refractory material comprises the following components in percentage by weight: and (3) recovering used silica bricks: 50-70% of carbon-containing regenerated material: 5-20% of aluminum reclaimed materials: 5-20%, calcium aluminate cement: 3-15% of a plasticizer: 0.1 to 5 percent.
2. The large metallurgical slag pot of claim 1, wherein: the lower grid structure (2) comprises two transverse lower fireproof prefabricated plates (4) and two longitudinal lower fireproof prefabricated plates (5), the transverse lower fireproof prefabricated plates (4) are provided with two clamping grooves (6) communicated with the bottom, the longitudinal lower fireproof prefabricated plates (5) are provided with two clamping grooves (6) communicated with the top, and the transverse lower fireproof prefabricated plates (4) and the longitudinal lower fireproof prefabricated plates (5) are spliced into the lower grid structure (2) through the clamping grooves (6).
3. The large metallurgical slag pot of claim 1, wherein: the upper grid structure (3) comprises three transverse upper refractory prefabricated plates (7) and three longitudinal upper refractory prefabricated plates (8), the transverse upper refractory prefabricated plates (7) are provided with three clamping grooves (6) communicated with the bottom, the longitudinal upper refractory prefabricated plates (8) are provided with three clamping grooves (6) communicated with the top, and the transverse upper refractory prefabricated plates (7) and the longitudinal upper refractory prefabricated plates (8) are spliced into the upper grid structure (3) through the clamping grooves (6).
4. The large metallurgical slag pot of claim 1, wherein: the tank body (1) is internally provided with a grid positioning clamping column (9) for positioning the lower grid structure (2) and the upper grid structure (3).
5. The large metallurgical slag pot of claim 1, wherein: and a pressing strip (10) is arranged on the periphery of the inner side of the upper edge of the tank body (1).
6. The large metallurgical slag pot of claim 1, wherein: SiO of the recycled silica brick2The content is more than or equal to 90 percent, the carbon-containing reclaimed material is one or more of recycled alumina-magnesia-carbon bricks, recycled alumina-carbon bricks and recycled aluminum-silicon-carbide-carbon bricks,wherein the content of C is more than or equal to 5 percent, the granularity is less than 5mm, the aluminum reclaimed material is one or more of recycled corundum bricks, recycled high-alumina bricks, recycled corundum castable and recycled alumina castable, and the Al is 2O3More than or equal to 48 percent, the granularity is less than 0.088mm, the water reducing agent is one or more of sodium tripolyphosphate and sodium hexametaphosphate, the explosion-proof agent is one or more of organic fiber and metal aluminum powder, the plasticizer is one or more of Guangxi white clay, ball clay, sodium carboxymethylcellulose and sodium polyacrylate, and the Al of the calcium aluminate cement2O3The content is more than or equal to 69 percent, and the content of CaO is 26-30 percent.
7. The large metallurgical slag pot of claim 1, wherein: the height of the lower grid structure (2) and the height of the upper grid structure (3) are 1.5-2 m.
8. The large metallurgical slag pot of claim 1, wherein: the thickness of the grid positioning clamping column (9) is 30-50 mm.
9. The large metallurgical slag pot of claim 1, wherein: the width of the pressing strip (10) is 20-30 mm.
10. A method of manufacturing a large metallurgical slag pot according to any one of claims 1 to 9, wherein: the method comprises the following steps:
A) manufacturing components to manufacture a tank body (1), a lower-layer grid structure (2) and an upper-layer grid structure (3);
B) welding a grid positioning clamping column (9) on the tank body (1), and welding pressing strips (10) on the periphery of the inner side of the upper edge of the tank body (1);
C) installing the lower-layer grating structure (2), and fixing the lower-layer grating structure (2) through the grating positioning clamping columns (9);
D) Spray-repairing the connection part between the tank body (1) and the lower grid structure (2) by adopting a semidry method, wherein the spray-repairing thickness is 50-80 mm;
E) installing the upper-layer grid structure (3), fixing the upper-layer grid structure (3) through the grid positioning clamping columns (9), wherein the distance between the top of the upper-layer grid structure (3) and the upper edge of the tank body (1) is 100-800 mm;
F) performing spray repair on other parts of the inner side of the tank body (1) by adopting a semidry method, wherein the spray repair thickness is 50-80 mm, and the spray repair height is flush with the height of the tank body (1), so as to obtain a slag tank blank;
G) placing the slag pot blank at a normal temperature for curing, wherein the curing time is more than 24 hours;
H) and baking the slag pot blank to obtain the large-scale metallurgical slag pot.
CN202210473628.8A 2022-04-29 2022-04-29 Large metallurgical slag pot and manufacturing method thereof Active CN114752716B (en)

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