CN106946554B - Anhydrous stemming - Google Patents
Anhydrous stemming Download PDFInfo
- Publication number
- CN106946554B CN106946554B CN201710207793.8A CN201710207793A CN106946554B CN 106946554 B CN106946554 B CN 106946554B CN 201710207793 A CN201710207793 A CN 201710207793A CN 106946554 B CN106946554 B CN 106946554B
- Authority
- CN
- China
- Prior art keywords
- granularity
- meshes
- percent
- powder
- particle size
- 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 - Fee Related
Links
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 29
- 239000000843 powder Substances 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims abstract description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000010426 asphalt Substances 0.000 claims abstract description 11
- 239000000440 bentonite Substances 0.000 claims abstract description 11
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 11
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004927 clay Substances 0.000 claims abstract description 11
- 239000010431 corundum Substances 0.000 claims abstract description 11
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 11
- 239000010439 graphite Substances 0.000 claims abstract description 11
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 11
- 239000010443 kyanite Substances 0.000 claims abstract description 11
- 229910052850 kyanite Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 150000004767 nitrides Chemical class 0.000 claims abstract description 11
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 11
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 11
- 239000007767 bonding agent Substances 0.000 claims abstract description 8
- 229910052570 clay Inorganic materials 0.000 claims description 10
- 239000011230 binding agent Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- -1 sericite Inorganic materials 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 32
- 229910052742 iron Inorganic materials 0.000 abstract description 16
- 239000002893 slag Substances 0.000 abstract description 8
- 230000003628 erosive effect Effects 0.000 abstract description 7
- 239000002245 particle Substances 0.000 description 55
- 238000003723 Smelting Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000011056 performance test Methods 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000004939 coking Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
- C04B35/103—Refractories from grain sized mixtures containing non-oxide refractory materials, e.g. carbon
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
-
- 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
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
-
- 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
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
- C04B2235/3472—Alkali metal alumino-silicates other than clay, e.g. spodumene, alkali feldspars such as albite or orthoclase, micas such as muscovite, zeolites such as natrolite
-
- 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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
-
- 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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
-
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
-
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/425—Graphite
-
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/428—Silicon
-
- 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
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/608—Green bodies or pre-forms with well-defined density
-
- 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
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/61—Mechanical properties, e.g. fracture toughness, hardness, Young's modulus or strength
-
- 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
- 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
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
-
- 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
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
- C04B2235/9676—Resistance against chemicals, e.g. against molten glass or molten salts against molten metals such as steel or aluminium
Abstract
The invention discloses anhydrous stemming which comprises the following raw materials: 7 to 10 percent of coke powder with the granularity of 2 to 0mm, 5 to 10 percent of sericite with the granularity of 200 meshes, 3 to 5 percent of alumina powder, 5 to 10 percent of silicon carbide with the granularity of 200 meshes, 10 to 15 percent of high bauxite with the granularity of 3 to 1mm, 10 to 15 percent of high bauxite with the granularity of 1 to 0mm, 5 to 10 percent of high bauxite with the granularity of 200 meshes, 5-10% of brown corundum with the granularity of 200 meshes, 2-4% of metal silicon powder with the granularity of 200 meshes, 4-6% of asphalt powder, 2-4% of kyanite with the granularity of 40-70 meshes, 2-4% of earthy graphite, 5-10% of clay, 5-10% of bentonite and 5-10% of ferrosilicon nitride, and additionally, a bonding agent accounting for 10-15% of the total weight of the raw materials. The anhydrous stemming has excellent slag iron erosion resistance and erosion resistance.
Description
Technical Field
The invention belongs to the field of refractory materials, and particularly relates to anhydrous stemming for a blast furnace taphole.
Background
The stemming is a refractory material for blocking an iron outlet of an iron-making blast furnace, and can be divided into two main types of water stemming and anhydrous stemming at present, wherein the water stemming is used for a middle and small-sized blast furnace with lower top pressure and low strengthening smelting degree, and the anhydrous stemming is used for a middle and large-sized blast furnace with higher top pressure and high strengthening smelting degree. The iron tap hole of the iron-making blast furnace is the throat for discharging molten iron from the blast furnace, and with the continuous strengthening of blast furnace smelting, the large-scale and long-life of modern blast furnaces, the increase of tapping time and the increase of slag iron flow, higher requirements are provided for the stability and the maintenance of the working state of the blast furnace iron tap hole. The key to maintaining the smooth high yield of the blast furnace is the stable state of the taphole, and the performance of the stemming is the key to ensure the stable operation of the taphole. Therefore, with the increase of the production intensity of blast furnace smelting, the requirements on the quality of the taphole stemming are higher and higher.
The function of the stemming is to fill the taphole channel, form a mud pack in the hearth and maintain the depth of the taphole enough; at the same time, the opening is easy, the mud beating operation is easy, and the slag and iron are resistant to physical and chemical erosion. Therefore, in order to stabilize the working state of the taphole and meet the requirement of blast furnace reinforced smelting, the taphole stemming needs to have enough refractoriness, proper porosity, strong molten iron scouring and corrosion resistance, good air permeability, easy drying, no cracking, good sintering performance, high strength, good opening performance, little environmental pollution, proper plasticity and the like. The existing anhydrous stemming for the blast furnace has poor slag resistance, high temperature resistance and erosion resistance, and is easy to have the problems of wet taphole, shallow taphole, iron notch breakage, large flow, pressure reduction, air release, burnout of equipment in front of the furnace and the like during use, thereby influencing production. Therefore, the invention provides the anhydrous stemming with excellent performance by starting from the characteristics of different refractory materials and researching the raw material composition and the proportion of the stemming.
Disclosure of Invention
The invention aims to provide anhydrous stemming for a blast furnace taphole. The anhydrous stemming has the advantages of fast coking, high strength, excellent slag iron erosion resistance, erosion resistance and slag resistance.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the anhydrous stemming comprises the following raw materials in percentage by weight: 7 to 10 percent of coke powder with the granularity of 2 to 0mm, 5 to 10 percent of sericite with the granularity of 200 meshes, 3 to 5 percent of alumina powder, 5 to 10 percent of silicon carbide with the granularity of 200 meshes, 10 to 15 percent of high bauxite with the granularity of 3 to 1mm, 10 to 15 percent of high bauxite with the granularity of 1 to 0mm, 5 to 10 percent of high bauxite with the granularity of 200 meshes, 5-10% of brown corundum with the granularity of 200 meshes, 2-4% of metal silicon powder with the granularity of 200 meshes, 4-6% of asphalt powder, 2-4% of kyanite with the granularity of 40-70 meshes, 2-4% of earthy graphite, 5-10% of clay, 5-10% of bentonite and 5-10% of ferrosilicon nitride, and additionally, a bonding agent accounting for 10-15% of the total weight of the raw materials.
According to the above anhydrous stemming, the binder is tar.
The preparation method of the anhydrous stemming comprises the following steps:
(1) weighing the raw materials according to the raw material composition ratio of the anhydrous stemming for later use; (2) heating the bonding agent to 70-75 ℃, and preserving heat; (3) adding high-alumina bauxite, sericite, alumina powder, silicon carbide, brown corundum, metal silicon powder, asphalt powder, kyanite, soil-like graphite, clay, bentonite and ferrosilicon nitride into a stirrer, and stirring and mixing uniformly at 70-75 ℃ to obtain a mixture; (4) and (3) adding the bonding agent treated in the step (2) into the mixture, mixing and grinding for 25-35min, then discharging to a mud extruder, and carrying out extrusion forming to obtain the anhydrous stemming.
The invention has the following positive beneficial effects:
(1) according to the invention, through scientific research and analysis, the amount proportion and the particle size distribution of the aggregate and the powder in the raw materials are reasonably designed, and the anhydrous stemming is prepared, has the advantages of fast coking, compact structure, high-temperature strength, good slag water and molten iron erosion resistance, excellent flushing resistance and prolonged tapping time.
(2) The anhydrous stemming has good plasticity, good opening operation performance, no phenomena of iron notch breaking and shallow iron notch, no hole expanding and no splashing, well forms a mud bag, can maintain the depth of the iron notch not to be reduced, and can stably discharge molten iron.
Table 1 performance test parameters of the anhydrous stemming of the present invention
(3) The performance detection parameters of the anhydrous stemming are shown in table 1, and the table 1 also shows that the rupture strength and the compressive strength of the anhydrous stemming are obviously higher than those of the traditional stemming, and the anhydrous stemming has excellent slag water and molten iron corrosion resistance and scouring resistance.
Detailed Description
The present invention is further illustrated by the following specific examples, which do not limit the scope of the present invention.
Example 1:
the anhydrous stemming comprises the following raw materials in percentage by weight: 7% of coke powder with the particle size of 2-0mm, 8% of sericite with the particle size of 200 meshes, 3% of alumina powder, 5% of silicon carbide with the particle size of 200 meshes, 10% of high bauxite with the particle size of 3-1mm, 15% of high bauxite with the particle size of 1-0mm, 8% of high bauxite with the particle size of 200 meshes, 8% of brown corundum with the particle size of 200 meshes, 2% of metal silicon powder with the particle size of 200 meshes, 4% of asphalt powder, 2% of kyanite with the particle size of 40-70 meshes, 2% of soil-like graphite, 8% of clay, 8% of bentonite and 10% of ferrosilicon nitride, and a binding agent accounting for 10% of the total weight of the raw materials is.
Example 2:
the anhydrous stemming comprises the following raw materials in percentage by weight: 10% of coke powder with the particle size of 2-0mm, 5% of sericite with the particle size of 200 meshes, 4% of alumina powder, 8% of silicon carbide with the particle size of 200 meshes, 12% of high bauxite with the particle size of 3-1mm, 12% of high bauxite with the particle size of 1-0mm, 5% of high bauxite with the particle size of 200 meshes, 10% of brown corundum with the particle size of 200 meshes, 3% of metal silicon powder with the particle size of 200 meshes, 5% of asphalt powder, 3% of kyanite with the particle size of 40-70 meshes, 2% of soil-like graphite, 5% of clay, 10% of bentonite and 6% of ferrosilicon nitride, and a bonding agent accounting for 12% of the total weight of the raw materials.
Example 3:
the anhydrous stemming comprises the following raw materials in percentage by weight: 8% of coke powder with the particle size of 2-0mm, 10% of sericite with the particle size of 200 meshes, 5% of alumina powder, 5% of silicon carbide with the particle size of 200 meshes, 15% of high bauxite with the particle size of 3-1mm, 10% of high bauxite with the particle size of 1-0mm, 10% of high bauxite with the particle size of 200 meshes, 5% of brown corundum with the particle size of 200 meshes, 4% of metal silicon powder with the particle size of 200 meshes, 4% of asphalt powder, 3% of kyanite with the particle size of 40-70 meshes, 3% of soil-like graphite, 5% of clay, 5% of bentonite and 8% of ferrosilicon nitride, and a binding agent accounting for 15% of the total weight of the raw.
Example 4:
the anhydrous stemming comprises the following raw materials in percentage by weight: 8% of coke powder with the particle size of 2-0mm, 8% of sericite with the particle size of 200 meshes, 3% of alumina powder, 10% of silicon carbide with the particle size of 200 meshes, 10% of high bauxite with the particle size of 3-1mm, 12% of high bauxite with the particle size of 1-0mm, 10% of high bauxite with the particle size of 200 meshes, 5% of brown corundum with the particle size of 200 meshes, 2% of metal silicon powder with the particle size of 200 meshes, 6% of asphalt powder, 4% of kyanite with the particle size of 40-70 meshes, 2% of soil-like graphite, 10% of clay, 5% of bentonite and 5% of ferrosilicon nitride, and a bonding agent accounting for 12% of the total weight of the raw.
Example 5:
the anhydrous stemming comprises the following raw materials in percentage by weight: 10% of coke powder with the particle size of 2-0mm, 6% of sericite with the particle size of 200 meshes, 4% of alumina powder, 5% of silicon carbide with the particle size of 200 meshes, 15% of high bauxite with the particle size of 3-1mm, 12% of high bauxite with the particle size of 1-0mm, 7% of high bauxite with the particle size of 200 meshes, 10% of brown corundum with the particle size of 200 meshes, 3% of metal silicon powder with the particle size of 200 meshes, 5% of asphalt powder, 2% of kyanite with the particle size of 40-70 meshes, 4% of soil-like graphite, 6% of clay, 6% of bentonite and 5% of ferrosilicon nitride, and a binding agent accounting for 10% of the total weight of the raw materials.
Example 6:
the anhydrous stemming comprises the following raw materials in percentage by weight: 6% of coke powder with the particle size of 2-0mm, 5% of sericite with the particle size of 200 meshes, 5% of alumina powder, 8% of silicon carbide with the particle size of 200 meshes, 12% of high bauxite with the particle size of 3-1mm, 10% of high bauxite with the particle size of 1-0mm, 8% of high bauxite with the particle size of 200 meshes, 6% of brown corundum with the particle size of 200 meshes, 4% of metal silicon powder with the particle size of 200 meshes, 4% of asphalt powder, 2% of kyanite with the particle size of 40-70 meshes, 4% of soil-like graphite, 8% of clay, 10% of bentonite and 8% of ferrosilicon nitride, and a binding agent accounting for 15% of the total weight of the raw materials is.
The performance test parameters of the anhydrous stemming disclosed in the embodiments 1-6 of the invention are shown in Table 2.
Table 2 performance test parameters of the anhydrous stemming according to embodiments 1-6 of the present invention
Claims (2)
1. The anhydrous stemming is characterized by comprising the following raw materials in percentage by weight: 7 to 10 percent of coke powder with the granularity of 2 to 0mm, 5 to 10 percent of sericite with the granularity of 200 meshes, 3 to 5 percent of alumina powder, 5 to 10 percent of silicon carbide with the granularity of 200 meshes, 10 to 15 percent of high bauxite with the granularity of 3 to 1mm, 10 to 15 percent of high bauxite with the granularity of 1 to 0mm, 5 to 10 percent of high bauxite with the granularity of 200 meshes, 5-10% of brown corundum with the granularity of 200 meshes, 2-4% of metal silicon powder with the granularity of 200 meshes, 4-6% of asphalt powder, 2-4% of kyanite with the granularity of 40-70 meshes, 2-4% of earthy graphite, 5-10% of clay, 5-10% of bentonite and 5-10% of ferrosilicon nitride, and additionally, a bonding agent accounting for 10-15% of the total weight of the raw materials;
the preparation method comprises the following steps:
(1) weighing the raw materials according to the raw material composition of the anhydrous stemming for later use;
(2) heating the bonding agent to 70-75 ℃, and preserving heat;
(3) adding high-alumina bauxite, sericite, alumina powder, silicon carbide, brown corundum, metal silicon powder, asphalt powder, kyanite, soil-like graphite, clay, bentonite and ferrosilicon nitride into a stirrer, and stirring and mixing uniformly at 70-75 ℃ to obtain a mixture;
(4) adding a binding agent into the mixture, mixing and grinding for 25-35min, then discharging to a mud extruder, and performing extrusion forming to obtain the anhydrous stemming.
2. The anhydrous stemming according to claim 1, wherein the binding agent is tar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710207793.8A CN106946554B (en) | 2017-03-31 | 2017-03-31 | Anhydrous stemming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710207793.8A CN106946554B (en) | 2017-03-31 | 2017-03-31 | Anhydrous stemming |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106946554A CN106946554A (en) | 2017-07-14 |
| CN106946554B true CN106946554B (en) | 2020-01-14 |
Family
ID=59473965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710207793.8A Expired - Fee Related CN106946554B (en) | 2017-03-31 | 2017-03-31 | Anhydrous stemming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106946554B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109650855A (en) * | 2017-10-11 | 2019-04-19 | 河北丰能耐火材料股份有限公司 | A kind of composition of raw materials of anhydrous stemming and preparation method thereof |
| CN108218393B (en) * | 2017-12-14 | 2021-04-09 | 中国地质大学（北京） | Preparation of Al by using coal gangue2O3Method for preparing-SiC-C series stemming fire-resistant material |
| CN108358617A (en) * | 2018-02-11 | 2018-08-03 | 南京联合荣大工程材料有限责任公司 | Functional environment-friendly anhydrous stemming and preparation method thereof |
| CN108440003A (en) * | 2018-04-25 | 2018-08-24 | 无锡市宝宜耐火材料有限公司 | Anhydrous stemming and preparation method thereof |
| CN108503382A (en) * | 2018-05-09 | 2018-09-07 | 宜兴市龙宸炉料有限公司 | It is a kind of to mitigate the processing method that nuisance overflows in anhydrous stemming production process |
| CN109293347B (en) * | 2018-10-12 | 2021-05-18 | 湖南立达高新材料有限公司 | Green and environment-friendly stemming for submerged arc furnace taphole and preparation method thereof |
| CN110606758B (en) * | 2019-09-29 | 2021-09-14 | 鞍钢股份有限公司 | Stemming for blast furnace by taking fly ash as partial raw material and preparation method |
| CN110803916A (en) * | 2019-10-17 | 2020-02-18 | 安徽海螺暹罗耐火材料有限公司 | High-strength wear-resistant silicon mullite brick and preparation method thereof |
| CN113860891A (en) * | 2021-09-28 | 2021-12-31 | 中冶检测认证有限公司 | Single-field anhydrous stemming for high-strength smelting small blast furnace and preparation method and application thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8505336B2 (en) * | 2007-06-19 | 2013-08-13 | Magneco/Metrel, Inc. | AZS refractory composition |
| CN101613213B (en) * | 2009-06-26 | 2013-04-03 | 河南省耕生耐火材料有限公司 | Environment-friendly stemming for blast furnace taphole and preparation method thereof |
| CN103833389A (en) * | 2013-11-26 | 2014-06-04 | 阜康市三工河乡樟兴新型耐火材料厂 | Waterless stemming and preparation method thereof |
| CN104446540A (en) * | 2014-11-19 | 2015-03-25 | 湖南湘钢瑞泰科技有限公司 | Anhydrous stemming and preparation method thereof |
| CN105218111A (en) * | 2015-09-21 | 2016-01-06 | 绥芬河鑫耐科技发展有限责任公司 | Anhydrous stemming |
| CN105906359A (en) * | 2016-04-29 | 2016-08-31 | 郑州赛沃科技有限公司 | Environment-friendly stemming and preparation method thereof |
-
2017
- 2017-03-31 CN CN201710207793.8A patent/CN106946554B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN106946554A (en) | 2017-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106946554B (en) | Anhydrous stemming | |
| CN107973610B (en) | Silicon carbide ramming mass taking waste silicon carbide saggar as main raw material | |
| CN100453509C (en) | No-water stemming material for blast furnace taphole and its prepn | |
| CN107673756B (en) | Mineral hot furnace magnesia anhydrous stemming and preparation method thereof | |
| CN106699206B (en) | Large and medium-sized blast furnace anhydrous stemming and preparation method thereof | |
| CN105859314B (en) | A kind of smelting molten steel equipment carbon containing gunning refractory and preparation method thereof | |
| CN102336574A (en) | Method for producing waterless taphole mix for blast furnace from high-alumina waste refractory materials | |
| CN101857445B (en) | Anhydrous stemming for blast furnace | |
| CN101618967A (en) | Dry coke quenching furnace circular passage tilt channel regional patching material | |
| CN101913890B (en) | Tap hole clay for recycled material high blast furnace and preparation method thereof | |
| CN104446540A (en) | Anhydrous stemming and preparation method thereof | |
| CN111732440A (en) | Environment-friendly anhydrous stemming for multi-taphole blast furnace and preparation method thereof | |
| CN112358302B (en) | Self-repairing anhydrous stemming | |
| CN110272264A (en) | Anhydrous stemming and preparation method for blast furnace | |
| CN105218111A (en) | Anhydrous stemming | |
| CN113860891A (en) | Single-field anhydrous stemming for high-strength smelting small blast furnace and preparation method and application thereof | |
| CN110981447A (en) | Carbon composite anhydrous stemming for large-scale blast furnace and preparation method thereof | |
| CN107879733A (en) | A kind of blast furnace iron outlet groove quick-drying gravity flow pouring material | |
| CN107324784A (en) | A kind of converter slag-resisting magnalium carbon slide brick and preparation method thereof | |
| CN111362674B (en) | Acid-resistant corundum ramming mass and method for manufacturing acid regenerator nozzle by using same | |
| CN109650855A (en) | A kind of composition of raw materials of anhydrous stemming and preparation method thereof | |
| CN108083786B (en) | Anhydrous micro-titanium accumulated material for blast furnace taphole and preparation method thereof | |
| CN110483023A (en) | A kind of microporous corundum brick and preparation method thereof | |
| CN113754450A (en) | Preparation method of high-stability stemming for iron notch of COREX furnace | |
| CN107056260B (en) | Environment-friendly anhydrous stemming for blocking iron outlet of iron-making blast furnace and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200114 |