CN110922173A - Converter slag-stopping sliding plate brick added with titanium nitride composite powder and preparation method thereof - Google Patents
Converter slag-stopping sliding plate brick added with titanium nitride composite powder and preparation method thereof Download PDFInfo
- Publication number
- CN110922173A CN110922173A CN201911329143.6A CN201911329143A CN110922173A CN 110922173 A CN110922173 A CN 110922173A CN 201911329143 A CN201911329143 A CN 201911329143A CN 110922173 A CN110922173 A CN 110922173A
- Authority
- CN
- China
- Prior art keywords
- powder
- titanium nitride
- composite powder
- converter slag
- corundum
- 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.)
- Pending
Links
Images
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
- C04B35/106—Refractories from grain sized mixtures containing zirconium oxide or zircon (ZrSiO4)
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4653—Tapholes; Opening or plugging thereof
-
- 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
- C04B2235/3821—Boron 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
- C04B2235/3817—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
- C04B2235/3886—Refractory metal nitrides, e.g. vanadium nitride, tungsten 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
- C04B2235/40—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
- C04B2235/30—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
- C04B2235/02—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
- C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
-
- 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
- C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
- C04B2235/483—Si-containing organic compounds, e.g. silicone resins, (poly)silanes, (poly)siloxanes or (poly)silazanes
-
- 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
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
-
- 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
- C04B2235/606—Drying
-
- 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
- C04B2235/74—Physical characteristics
- C04B2235/77—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
- C04B2235/70—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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Metallurgy (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a converter slag-stopping sliding plate brick added with titanium nitride composite powder and a preparation method thereof, belonging to the technical field of refractory materials. The converter slag-stopping sliding plate brick comprises a granular material, a composite powder material and an additive, wherein the granular material comprises high-hardness materials with various granularities, the composite powder material comprises titanium nitride powder and other oxidation-resistant powder materials, the additive comprises a high-melting-point material, and the addition amount of the additive is 1.5-4.5% of the total mass of the granular material and the composite powder. The slag-stopping sliding plate brick of the titanium nitride composite powder converter is prepared by the processes of mixing, forming, drying, grinding and the like. The converter slag-stopping slide plate brick prepared by the invention has the advantages of short and simple production process period, no burning or oil immersion, energy saving, environmental protection, good high-temperature strength and breaking strength during use, good thermal shock resistance and wear resistance, higher chemical corrosion resistance in the high-temperature steel tapping process, and capability of meeting the requirements of efficient production and safe use of converter steelmaking.
Description
Technical Field
The invention belongs to the technical field of refractory materials, and particularly relates to a converter slag-stopping sliding plate brick added with titanium nitride composite powder and a preparation method thereof.
Background
When steel is tapped from a converter, the slag quantity directly influences the quality of molten steel, and the market requirements of the steel quality are increasingly improved, such as special steel, ultra-low carbon steel, clean steel and the like. Under the background, the technology that the slag control of the converter sliding plate reduces the slag discharge during the tapping of the converter and improves the cleanliness of molten steel and the quality of steel products is widely applied. The converter slag-stopping sliding plate brick is characterized in that a sliding steel tapping hole mechanism is installed at the tail end of a steel tapping hole according to a converter, and the opening or closing of the sliding water gap mechanism is controlled through an infrared automatic detection slag discharging system, so that the purpose of slag-controlling steel tapping is achieved, namely slag discharging is avoided in the early stage of converter steel tapping, the sliding plate brick is quickly and accurately closed in the later stage of steel tapping, and slag-controlling steel tapping of the sliding plate brick is realized. Compared with the application of the converter slag blocking slide plate technology, the converter slag blocking slide plate has the advantages of accurate positioning, good control of slag blowing, high slag blocking success rate, good slag blocking effect and the like compared with methods of using slag blocking caps, slag blocking balls, slag blocking plugs, pneumatic slag blocking and the like, has great advantages in the aspects of improving the alloy recovery rate, reducing harmful impurities in steel, improving the steel grade cleanliness and the like in smelting, and is widely applied to converter smelting production by various steel factories, such as first steel Qian' an, first steel Jing Tang, Bao steel, Lai steel, mountain steel and the like. The converter slag-stopping slide plate brick is used as a key functional refractory material in the slag-stopping function of converter smelting, and needs to be repeatedly scoured and corroded by molten steel in the using process, and the surface of the refractory material is continuously oxidized and abraded by high temperature (1400 ℃ plus 1800 ℃), so that the converter slag-stopping slide plate brick is required to have higher high-temperature strength and breaking strength in performance, can bear thermal shock stability for resisting temperature shock temperature difference, and has enough resistance to corrosion and oxidization of steel slag and molten steel, and the safety and stability of converter smelting production can be ensured by combining the performances.
At present, most of the converter slag-stopping sliding plate bricks of refractory material manufacturers mainly use aluminum-zirconium-carbon or composite inlaid zirconium plates. The production process of the former is complicated and needs complex and energy-consuming procedures of high-temperature firing at about 1400 ℃, asphalt impregnation, dry distillation, sand cleaning and the like, the fired slide plate brick can form a high-strength material after being poured with asphalt, but the asphalt has high-temperature toxicity and certain potential safety hazard, the aluminum-zirconium-carbon has general molten steel corrosion resistance, the steel facing part is easy to oxidize and peel off, and the service life is generally unstable at about 12 furnaces. The latter sliding plate process for embedding zirconium plates is also to fire impregnated asphalt at high temperature, and the corrosion resistance is improved by embedding zirconium plates, but the whole embedding process is complex, multiple uncontrollable factors exist, the energy consumption and time consumption of the zirconium plate firing process are high, the firing rejection rate is high, the service life fluctuation is large, the operation process requirement for producing the embedded zirconium plates is high, the expansion and contraction of the joint fire clay easily cause that the zirconium plates of the body are easy to form steel clamping between plates early due to the use of bulges, the steel leakage accident is caused, and certain risks exist in the use.
Through search, a Chinese patent application No. 200710051846.8, whose publication date is 2007, 4-11, discloses a titanium carbonitride-containing slide plate refractory material and a preparation method thereof. The technical scheme of the patent is as follows: mixing 65-80 wt% of corundum, 1-20 wt% of zirconium dioxide or zirconium corundum or zirconium mullite or a mixture of more than one of the corundum, the zirconium corundum or the zirconium mullite, 1-10 wt% of alumina micropowder, 0.2-5 wt% of titanium dioxide powder, 0-5 wt% of boron carbide powder, 0-5 wt% of silicon carbide powder, 0.5-5 wt% of metal aluminum powder, 0.5-5 wt% of metal silicon powder and 1-5 wt% of graphite, and adding 2-6 wt% of organic binderMixing, molding and firing at 1300-1600 ℃. The raw material titanium dioxide adopted by the invention is relatively cheap, and the production cost is effectively reduced. The titanium carbonitride is generated in situ in the slide plate after high-temperature treatment, so that the slide plate has high melting point, high hardness, good chemical stability and excellent molten iron melting loss resistance, and the high-temperature strength, slag resistance, abrasion resistance and thermal shock resistance of the slide plate are improved. However, titanium dioxide powder is mainly applied to the paint industry, the plastic industry and the paper industry, and titanium carbide and titanium nitride can be generated only by using a titanium dioxide powder carbothermic reduction nitridation method under the protection of inert gas and reduction atmosphere with carbon at high temperature, and a long enough time is needed; the purity of the titanium carbide and titanium nitride is very low even if a small amount of titanium carbide and titanium nitride are generated under the normal pressure condition of 1300-1600 ℃ and the TiO at high temperature2More easily combined with Al in the material2O3Powdering to Al2TiO5And Al2TiO5High temperature continuous reaction and decomposition into Al2O3And is TiO2The reaction is also accompanied by large volume expansion, and cracks are generated in the firing process, so that an acceptable product cannot be formed.
For another example, a Chinese patent application No. 201510013589.3, published as 2015, 5/13, discloses a titanium-calcium aluminate-high alumina modified refractory material, a preparation method and an application thereof, the technical scheme of the patent is that 25-40 wt% of high alumina, 25-40 wt% of titanium-calcium aluminate, 30-35 wt% of co-ground powder and an additional phenolic resin binder accounting for 3-6 wt% of the total mass of the raw materials are added, wherein the co-ground powder is prepared by uniformly mixing fine titanium-calcium aluminate powder, α -Al2O3 micro powder, graphite powder, fine silicon carbide powder, metal aluminum powder and high-temperature asphalt powder, and the proportion of the calcium titanium-aluminate is Al2O376.21％、TiO210.6％、CaO10.16％、Fe2O30.6％、MgO1.82％、SiO20.62 percent. However, this method does not involve a step of high-temperature firing, and since the conventional converter slag-stopping slide brick is required to have higher strength and basically does not involve a step of high-temperature firing, the conventional slag-stopping slide brick is not changed in the case of the conventional methodThe raw material composition system of the sliding plate brick, and the service life of the product prepared by the method can not meet the requirements of the steel-making industry.
Therefore, the development of the material composition of the converter slag-stopping sliding brick is urgently needed in the market, so that the sliding brick can reach the service life meeting the requirement without being fired.
Disclosure of Invention
1. Problems to be solved
The invention provides a converter slag-stopping sliding brick added with titanium nitride composite powder, which is characterized in that the composition of a raw material formula is optimized, so that the added titanium nitride composite powder is matched with other raw materials, and the sliding brick formed after physical mixing has a product meeting the service life requirement in the industry. Furthermore, the invention also provides a preparation method of the converter slag-stopping sliding plate brick added with the titanium nitride composite powder, and the problems that the existing high-strength converter slag-stopping sliding plate brick is complex in production process and needs to be fired at high temperature are solved through the optimized raw material formula composition.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the utility model provides a converter pushing off slag slide brick of compound powder of titanium nitride which characterized in that: the composite material comprises a granular material, a composite powder and an additive, wherein the granular material comprises high-hardness materials with various granularities, the composite powder comprises titanium nitride powder and other oxidation-resistant powder materials, the additive comprises a high-melting-point material, and the addition amount of the additive is 1.5-4.5% of the total mass of the granular material and the composite powder.
The high-hardness material comprises electrically-fused zirconia corundum, tabular corundum and silicon carbide with different particle sizes, other oxidation-resistant powder materials in the composite powder comprise tabular corundum powder, α calcined alumina powder, metal aluminum powder, metal silicon powder, boron carbide powder and nano zirconia powder, the additive comprises solid phenolic resin powder, organic silicon resin and thermosetting phenolic resin, and the organic silicon resin is high-temperature-resistant organic silicon resin.
Further, the raw materials comprise the following components in parts by weight:
α calcining 5-8 parts of alumina powder;
3-8 parts of metal aluminum powder;
1-3 parts of metal silicon powder;
1-2 parts of boron carbide powder;
0.5-1 part of nano zirconia powder;
the adding amount of the solid phenolic resin powder is 0.5-1.5% of the total mass of the granular material and the composite powder; the addition amount of the organic silicon resin is 1-2% of the total mass of the granular material and the composite powder; the addition amount of the thermosetting phenolic resin is 3-4% of the total mass of the granules and the composite powder.
Further, the granularity of the fused zirconia corundum is 1-3 mm, and w (Al) in the fused zirconia corundum2O3) More than or equal to 72.5 percent; the granularity of the silicon carbide is 1-0 mm, and w (SiC) in the silicon carbide is more than 98 wt%.
Further, the granularity of the plate-shaped corundum in the granules comprises 1-2 mm, 1-0.5 mm and 0.5-0 mm, and the particle size of the plate-shaped corundum is w (Al) in the plate-shaped corundum2O3) Not less than 99 percent, and the volume density of the granular tabular corundum is 3.5g cm-3Wherein the mass parts of each granularity are as follows:
15-25 parts of 1-2 mm plate-shaped corundum;
5-15 parts of 1-0.5 mm plate-shaped corundum;
10 to 20 parts of 0.5 to 0mm plate-shaped corundum.
Further, the particle size of the titanium nitride powder is 20nm, and the titanium nitride powder is black powder; the granularity of the plate-shaped corundum powder is 325 meshes, and the plate-shaped corundum powder contains w (Al)2O3) More than or equal to 99 percent, wherein the tabular corundum is sintered tabular corundum, the particle size of the α calcined alumina powder is2 mu m, and w (Al) in α calcined alumina powder2O3) More than or equal to 99 percent; the granularity of the metal aluminum powder is 200 meshes, and w (Al) in the metal aluminum powder is more than or equal to 99 percent; the metal silicon powderThe granularity of the metal silicon powder is 325 meshes, and w (Si) in the metal silicon powder is more than or equal to 98 percent; the granularity of the boron carbide powder is 325 meshes; the particle size of the nano zirconia powder is 1 mu m, and the w (ZrO) in the nano zirconia powder2) Not less than 99 percent, and the volume density of the nano zirconia powder is 0.78g cm3。
Further, the solid phenolic resin powder is Carbores P, wherein w (solid content of C) in the Carbores P is more than or equal to 80%; the w (solid content of C) in the thermosetting phenolic resin is more than or equal to 50 percent.
A preparation method of the converter slag-stopping slide plate brick containing the titanium nitride composite powder comprises the following steps: the preparation method comprises the steps of uniformly mixing the granules in proportion, then uniformly mixing the composite powder and the solid phenolic resin powder in proportion under a vacuum condition to prepare premixed powder, then mixing the granules, the premixed powder, the thermosetting phenolic resin and the organic silicon resin at a high speed, and finally molding, drying and finish machining to obtain the finished product.
Further, the steps are as follows:
(1) preparing the granules: preparing granules according to the mass parts of the raw materials;
(2) premixing powder: dry-mixing the composite powder and the solid phenolic resin powder for 25-35 min under vacuum to uniformly disperse the fine powder components;
(3) high-speed mixing: mixing the granular material prepared in the step (1) with the premixed powder in the step (2), adding thermosetting phenolic resin and organic silicon resin, mixing for 8-10 min, ageing the uniformly mixed pug in a thermostatic chamber for 8-10 h, wherein the thermostatic chamber is required to keep the temperature at 25 ℃ and the relative humidity at 45-65%;
(4) molding: forming the pug trapped in the step (3) into a semi-finished product blank by using a LAEIS 2500-ton hydraulic press;
(5) and (3) drying: naturally cooling the semi-finished blank prepared in the step (4) for 12 hours, then putting the semi-finished blank into a gas dryer, dividing the drying temperature into two sections, uniformly heating the first section to 110 ℃ at 30 ℃ per hour, then preserving the heat for 20 hours, and uniformly heating the second section to 210 ℃ at 30 ℃ per hour, and preserving the heat for 12 hours;
(6) and grinding and finish machining by using a numerical control grinding machine to obtain a finished product.
Further, a planetary vibration high-energy ball mill is adopted for vacuumizing in the step (2); in the step (3), an EIRICH intensive mixer is used for uniformly mixing.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) the converter slag-stopping sliding plate brick has simple raw material formula composition, a small amount of titanium nitride powder is added to enhance the wear resistance of the product, and the strength of the product is enhanced by combining carbon P and high temperature with organic silicon resin, so that the sliding plate brick does not need to be fired at high temperature, the product meeting the service life requirement can be formed by only physical mixing, no chemical reaction occurs, the defects that the existing sliding plate brick needs to be fired at high temperature and is easily associated with inevitable chemical byproducts are overcome, and the problem of easy expansion and cracking in the firing process is avoided;
(2) the converter slag-stopping sliding plate brick added with the titanium nitride composite powder has the advantages that titanium nitride (TiN) is a covalent bond compound with a typical NaCl-type structure, the gas ultrafine powder is black, the melting point is 2950 ℃, the melting point is higher than that of most transition metal oxides, and the density is 5.43-5.44 g/cm3The Mohs hardness is 8-9, has the characteristics of high hardness, high melting point, stable chemical property, chemical corrosion resistance, good thermal shock resistance and the like, and is a high-quality heat-resistant material; the invention utilizes the characteristics of the titanium nitride and the added composite powder to ensure that the converter slag-stopping slide plate brick has the characteristics of excellent wear resistance, corrosion resistance, oxidation resistance and chemical stability, and the added TiN reacts with oxygen to generate TiO in the high-temperature use process2The pores in the brick body can be sealed along with the volume expansion, so that the high-temperature strength of the material is increased;
(3) the zirconium corundum is added into the converter slag-stopping sliding plate brick added with the titanium nitride composite powder, and ZrO in the zirconium corundum2The volume expansion is generated by phase change at different temperatures, and the generation of microcracks is accompanied, so that the generation of the microcracks can play a role in toughening the blank and improve the thermal shock resistance of the blank;
(4) the nano zirconia powder added into the converter slag-stopping sliding plate brick added with the titanium nitride composite powder can improve the compactness and the erosion resistance of a blank; introduced boron carbide (B)4C) The fine powder is used at high temperatureB generated by reaction with oxygen in the process2O3Alumina powder in the material generates aluminum borate crystal whisker, and the material body is further enhanced;
(5) according to the invention, carbon residue of Carbores P is more than 85% added into titanium nitride composite powder, wherein the Carbores P is one of cured phenolic resins, the softening temperature of the Carbores P is 235 ℃, a carbonized structure of the carbon residue is formed after the green body is softened and cured when being dried, the carbonized structure is a graphitized structure, the toughness is good, and the strength of the body is enhanced;
(6) the converter slag-stopping sliding plate brick has excellent normal-temperature strength and high-temperature strength, does not need high-temperature firing and asphalt impregnation to increase the volume density in the production process, and easily emits yellow toxic substances at high temperature, so that potential safety hazards exist;
(7) the converter slag-stopping sliding plate brick has excellent erosion resistance, thermal shock stability and high-temperature thermal state strength, is stably used in batches in Benxi steel mills, sand steel, ladle steel and other large converters, has an average service life of 20 furnaces, and is accepted by steel mill users certainly.
Drawings
FIG. 1 is an SEM micrograph of a converter slag trap slide plate brick obtained in example 1 at 20 times magnification;
FIG. 2 is a total spectrum of elemental analysis of the converter slag-stopping slide plate brick obtained in example 1;
FIG. 3 is an SEM chromatogram of the converter slag-stopping slide plate brick obtained in example 2, after being magnified by 20 times;
FIG. 4 is a total spectrum of elemental analysis of the converter slag-stopping slide plate brick obtained in example 2;
FIG. 5 is an SEM micrograph of the converter slag trap slide plate brick obtained in example 3, which is magnified 20 times;
FIG. 6 is a total spectrum of elemental analysis of the converter slag-stopping slide plate brick obtained in example 3;
FIG. 7 is an SEM micrograph of the converter slag trap slide plate brick obtained in example 4 at 200 times magnification;
FIG. 8 is a total spectrum of elemental analysis of the converter slag-stopping slide plate brick obtained in example 4;
FIG. 9 is an SEM micrograph of a converter slag trap slide plate brick obtained in example 5 at 20 times magnification;
FIG. 10 is a total spectrum of elemental analysis of the converter slag-stopping slide plate brick obtained in example 5;
FIG. 11 is a drawing of a converter slag trap slide brick produced in example 1;
FIG. 12 is a view showing a state after 16 furnaces were used for the converter slag-stopping slide brick obtained in example 1.
Detailed Description
The invention is further described with reference to specific examples.
Table 1 below shows the names and manufacturer information of the raw materials used in the embodiment.
Table 1 example raw material name and manufacturer
Example 1
The converter slag-stopping sliding plate brick containing the titanium nitride composite powder comprises the following components in parts by weight:
5 parts of fused zirconia corundum with the granularity of 1-3 mm;
25 parts of tabular corundum with the granularity of 1-2 mm;
15 parts of tabular corundum with the granularity of 1-0.5 mm;
15 parts of tabular corundum with the granularity of 0.5-0 mm;
5 parts of silicon carbide with the granularity of 1-0 mm;
15 parts of plate-shaped corundum powder with the granularity of 325 meshes;
3 parts of 98-mesh metal silicon powder with the granularity of 325 meshes;
6 parts of metal aluminum powder with the particle size of 200 meshes;
7 parts of α calcined alumina powder with the particle size of 2 mu m;
1.5 parts of boron carbide powder with the granularity of 325 meshes;
1 part of nano zirconia powder with the granularity of 1 mu m;
1.5 parts of titanium nitride powder with the particle size of 20 nm;
1 part of high-temperature resistant organic silicon resin;
3 parts of thermosetting phenolic resin;
0.5 part of Carbores P;
wherein, the W (Al) in the fused zirconia corundum2O3) More than or equal to 72.5 percent, w (SiC) in the silicon carbide is more than 98 percent by weight; granular tabular corundum and tabular corundum powder medium w (Al)2O3) Not less than 99 percent, and the volume density of the granular tabular corundum is 3.5g cm-398w (Si) in metal silicon powder is more than or equal to 98%, w (Al) in metal aluminum powder is more than or equal to 99%, and α w (Al) in calcined alumina powder2O3) More than or equal to 99 percent; w (ZrO) in nano zirconia powder2) Not less than 99 percent, and the volume density of the nano zirconia powder is 0.78g cm3(ii) a W (solid content of C) in Carbores P is more than or equal to 80 percent; w (solid content of C) in the thermosetting phenolic resin is more than or equal to 50 percent.
Furthermore, the converter slag-stopping slide plate brick containing the titanium nitride composite powder is prepared by the raw materials and the mixture ratio, and the preparation method comprises the following steps:
(1) preparing the granules: preparing granular materials according to the mass parts of the raw materials, namely 5 parts of 1-3 mm fused zirconia corundum, 25 parts of 1-2 mm plate corundum, 15 parts of 1-0.5 mm plate corundum, 15 parts of 0.5-0 mm plate corundum and 5 parts of 1-0 mm silicon carbide;
(2) and (2) premixing powder, namely performing vacuum pumping (oxidation prevention) dry mixing on the composite powder and the solid phenolic resin powder for 30min by adopting a planetary vibration high-energy ball mill to uniformly disperse the components of the fine powder, wherein the premixed powder comprises 15 parts of 325-mesh plate-shaped corundum, 3 parts of 325-mesh 98-metal silicon powder, 6 parts of 200-mesh metal aluminum powder, 7 parts of 2-micron α -granularity calcined alumina powder, 1.5 parts of 325-mesh boron carbide, 1 part of 1-micron nano zirconia powder, 1.5 parts of 325-mesh titanium nitride powder and 0.5 part of Carbores P.
(3) High-speed mixing: mixing the granular material prepared in the step (1) with the premixed powder in the step (2), adding 3 parts of thermosetting phenolic resin and 1 part of organic silicon resin, uniformly mixing for 8min by using an EIRICH (ethylene-inert-type epoxy resin) intensive mixer, ageing the uniformly mixed pug in a thermostatic chamber for 8h, wherein the thermostatic chamber is required to keep the temperature at 25 ℃ and the relative humidity at 45-65%;
(4) molding: forming the pug trapped in the step (3) into a semi-finished product blank by using a LAEIS 2500-ton hydraulic press;
(5) and (3) drying: naturally cooling the semi-finished blank prepared in the step (4) for 12 hours, then putting the semi-finished blank into a gas dryer, dividing the drying temperature into two sections, uniformly heating the first section to 110 ℃ at 30 ℃ per hour, then preserving the heat for 20 hours, and uniformly heating the second section to 210 ℃ at 30 ℃ per hour, and preserving the heat for 12 hours;
(6) the finished product is obtained after the grinding and finishing by the numerically controlled grinder, as shown in fig. 11, which is a diagram of the finished product in this embodiment.
The finished product prepared in this example is subjected to a scanning electron microscope test, and as shown in fig. 1, the spectrum of the finished product at 20 times of magnification is shown in fig. 1: the structural appearance of the sample is compact, and the matrix combination is good.
FIG. 2 is an elemental analysis chart showing that the main components include Na, Al, Si, Ca, Fe, Zr, O and the like.
After 16-furnace steelmaking, the finished product of this example is shown in fig. 12, and it can be seen from the figure that after the converter is used, the slide plate casting nozzle is uniformly reamed and eroded regularly, the crack propagation is small, and the sliding surface is smooth and has good wear resistance.
Example 2
In this example, a converter slag-stopping slide brick comprising a titanium nitride composite powder was prepared using the formulation of example 2 shown in Table 2 below, wherein the conditions of the parameters of the preparation process were somewhat different.
The converter slag-stopping slide plate brick containing the titanium nitride composite powder of the embodiment is prepared by using the formula of the embodiment 2 shown in the table 2, and the preparation method comprises the following steps:
(1) preparing the granules: preparing granular materials according to the mass parts of the raw materials, namely 5 parts of 1-3 mm fused zirconia corundum, 25 parts of 1-2 mm plate corundum, 15 parts of 1-0.5 mm plate corundum, 15 parts of 0.5-0 mm plate corundum and 5 parts of 1-0 mm silicon carbide;
(2) and (2) premixing powder, namely performing vacuum pumping (oxidation prevention) dry mixing on the composite powder and the solid phenolic resin powder for 25min by adopting a planetary vibration high-energy ball mill to uniformly disperse the components of the fine powder, wherein the premixed powder comprises 15 parts of 325-mesh plate-shaped corundum, 3 parts of 325-mesh 98-metal silicon powder, 6 parts of 200-mesh metal aluminum powder, 7 parts of 2-micron α -granularity calcined alumina powder, 1.5 parts of 325-mesh boron carbide, 1 part of 1-micron nano zirconia powder, 1.5 parts of 325-mesh titanium nitride powder and 0.5 part of Carbores P.
(3) High-speed mixing: mixing the granular material prepared in the step (1) with the premixed powder in the step (2), adding 3 parts of thermosetting phenolic resin and 1 part of organic silicon resin, uniformly mixing for 9min by using an EIRICH (ethylene-inert-type epoxy resin) intensive mixer, ageing the uniformly mixed pug in a thermostatic chamber for 9h, wherein the thermostatic chamber is required to keep the temperature at 25 ℃ and the relative humidity at 45-65%;
(4) molding: forming the pug trapped in the step (3) into a semi-finished product blank by using a LAEIS 2500-ton hydraulic press;
(5) and (3) drying: naturally cooling the semi-finished blank prepared in the step (4) for 12 hours, then putting the semi-finished blank into a gas dryer, dividing the drying temperature into two sections, uniformly heating the first section to 110 ℃ at 30 ℃ per hour, then preserving the heat for 20 hours, and uniformly heating the second section to 210 ℃ at 30 ℃ per hour, and preserving the heat for 12 hours;
(6) and grinding and finish machining by using a numerical control grinding machine to obtain a finished product.
When the finished product prepared in this embodiment is subjected to a scanning electron microscope test, as shown in fig. 3, which is a spectrum of the finished product magnified by 20 times, it can be seen that the plate-shaped corundum inside the sample is clearly combined with the matrix, and the surface is dense.
FIG. 4 is an elemental analysis chart showing that the main components include Na, Al, Si, Ca, Fe, Zr, O and the like.
Through tests, the service life of the product of the embodiment is more than or equal to 15 furnaces, after the product is used, the diameter of a casting nozzle of the converter slag-stopping sliding plate is expanded by about 170mm, the crack extension is small, the galling of a working area of a sliding surface of the sliding plate is slight, and the integral wear resistance is good.
Example 3
This example used the formulation of example 3 shown in Table 2 below to prepare a converter slag-stopping slide brick containing titanium nitride composite powder, wherein the conditions of the parameters of the preparation process were somewhat different.
The converter slag-stopping slide plate brick containing the titanium nitride composite powder of the embodiment is prepared by using the formula of the embodiment 3 shown in the table 2, and the preparation method comprises the following steps:
(1) preparing the granules: preparing granular materials according to the mass parts of the raw materials, namely 5 parts of 1-3 mm fused zirconia corundum, 25 parts of 1-2 mm plate corundum, 15 parts of 1-0.5 mm plate corundum, 15 parts of 0.5-0 mm plate corundum and 5 parts of 1-0 mm silicon carbide;
(2) and (2) premixing powder, namely performing vacuum pumping (oxidation prevention) dry mixing on the composite powder and the solid phenolic resin powder for 35min by adopting a planetary vibration high-energy ball mill to uniformly disperse the components of the fine powder, wherein the premixed powder comprises 15 parts of 325-mesh plate-shaped corundum, 3 parts of 325-mesh 98-metal silicon powder, 6 parts of 200-mesh metal aluminum powder, 7 parts of 2-micron α -granularity calcined alumina powder, 1.5 parts of 325-mesh boron carbide, 1 part of 1-micron nano zirconia powder, 1.5 parts of 325-mesh titanium nitride powder and 0.5 part of Carbores P.
(3) High-speed mixing: mixing the granular material prepared in the step (1) with the premixed powder in the step (2), adding 3 parts of thermosetting phenolic resin and 1 part of organic silicon resin, uniformly mixing for 10min by using an EIRICH (ethylene-inert-type epoxy resin) intensive mixer, ageing the uniformly mixed pug in a thermostatic chamber for 10h, wherein the thermostatic chamber is required to keep the temperature at 25 ℃ and the relative humidity at 45-65%;
(4) molding: forming the pug trapped in the step (3) into a semi-finished product blank by using a LAEIS 2500-ton hydraulic press;
(5) and (3) drying: naturally cooling the semi-finished blank prepared in the step (4) for 12 hours, then putting the semi-finished blank into a gas dryer, dividing the drying temperature into two sections, uniformly heating the first section to 110 ℃ at 30 ℃ per hour, then preserving the heat for 20 hours, and uniformly heating the second section to 210 ℃ at 30 ℃ per hour, and preserving the heat for 12 hours;
(6) and grinding and finish machining by using a numerical control grinding machine to obtain a finished product.
The finished product prepared in this example is subjected to a scanning electron microscope test, and as shown in fig. 5, the spectrum of the finished product at 20 times magnification is shown in fig. 5: the plate-shaped corundum in the sample is clearly combined with the substrate and has a compact surface;
FIG. 6 is an elemental analysis chart showing that the main components include Na, Al, Si, Ca, Fe, Zr, O and the like.
Through tests, the service life of the product of the embodiment is more than or equal to 15 furnaces, the converter sliding plate is corroded generally, the plate surface is smooth, and the thermal state strength is good.
Example 4
In this example, a converter slag-stopping slide brick containing titanium nitride composite powder was prepared using the formulation of example 4 shown in Table 2 below, and the preparation method was substantially the same as in example 1.
The finished product prepared by the embodiment is subjected to scanning electron microscope test, and as shown in fig. 7, the map of the finished product at 200 times magnification is shown, and as can be seen from fig. 7, the sample has compact crystal appearance and good development combination.
FIG. 8 is an elemental analysis chart showing that the main components include Na, Al, Si, Ca, Fe, Zr, O and the like.
Through tests, the service life of the product is more than or equal to 15 furnaces, the corrosion resistance is good, the hole expansion is uniform, the surface of the plate surface slightly expands cracks, and the overall use effect is good.
Example 5
In this example, a converter slag-stopping slide brick containing titanium nitride composite powder was prepared using the formulation of example 5 shown in Table 2 below, and the preparation method was substantially the same as in example 1.
The finished product prepared in this example is subjected to a scanning electron microscope test, and as shown in fig. 9, the spectrum of the finished product at 20 times magnification is shown, and as can be seen from fig. 9: the plate-shaped corundum in the sample is clearly combined with the substrate, and the surface is compact. FIG. 10 is an elemental analysis chart showing that the main components include Na, Al, Si, Ca, Fe, Zr, O and the like.
Through tests, the service life of the product is more than or equal to 15 furnaces, the corrosion resistance is good, the hole expansion is uniform, the surface of the plate surface slightly expands cracks, and the overall use effect is good.
Examples 1-5 the raw material formulation of the converter slag-stopping slide plate brick added with titanium nitride composite powder is shown in table 2:
table 2 formula of each raw material in examples 1 to 5 in parts by mass
Then, the converter slag-stopping sliding plate added with the titanium nitride composite powder prepared in the examples 1 to 5 is compared with the existing aluminum zirconium carbon and embedded zirconium for performance test, and the test results are shown in table 3.
TABLE 3 comparison of converter slag-stopping slide plate with titanium nitride composite powder added, aluminum zirconium carbon and zirconium-embedded index
As can be seen from the comparison of indexes in Table 3, the physical indexes of the converter slag-stopping sliding plate brick added with the titanium nitride composite powder are superior to those of the existing product at normal temperature and high temperature, and the product is used in the converters of steelworks such as Benxi steel, steelmaking ladles and the like, so that the corrosion and hole expansion of molten steel after use, the high-temperature crack extension and the like are obviously smaller than those of the existing product, and the number of the used furnaces in the test is also obviously increased by 2-5 furnaces.
Claims (10)
1. The utility model provides a converter pushing off slag slide brick of compound powder of titanium nitride which characterized in that: the composite material comprises a granular material, a composite powder and an additive, wherein the granular material comprises high-hardness materials with various granularities, the composite powder comprises titanium nitride powder and other oxidation-resistant powder materials, the additive comprises a high-melting-point material, and the addition amount of the additive is 1.5-4.5% of the total mass of the granular material and the composite powder.
2. The converter slag-stopping slide plate brick containing the titanium nitride composite powder according to claim 1, wherein the high-hardness material comprises fused zirconia corundum, tabular corundum and silicon carbide with different particle sizes, other oxidation-resistant powder materials in the composite powder comprise tabular corundum powder, α calcined alumina powder, metal aluminum powder, metal silicon powder, boron carbide powder and nano zirconia powder, and the additive comprises solid phenolic resin powder, organic silicon resin and thermosetting phenolic resin.
3. The converter slag-stopping slide plate brick containing titanium nitride composite powder according to claim 2, characterized in that: the raw materials comprise the following components in parts by weight:
the adding amount of the solid phenolic resin powder is 0.5-1.5% of the total mass of the granular material and the composite powder; the addition amount of the organic silicon resin is 1-2% of the total mass of the granular material and the composite powder; the addition amount of the thermosetting phenolic resin is 3-4% of the total mass of the granules and the composite powder.
4. The converter slag-stopping slide brick containing titanium nitride composite powder according to claim 2 or 3, characterized in that: the granularity of the fused zirconia corundum is 1-3 mm, and the w (Al) in the fused zirconia corundum2O3) More than or equal to 72.5 percent; the granularity of the silicon carbide is 1-0 mm, and w (SiC) in the silicon carbide is more than 98 wt%.
5. The converter slag-stopping slide brick containing titanium nitride composite powder according to claim 2 or 3, characterized in that: the granularity of the plate-shaped corundum in the granules comprises 1-2 mm, 1-0.5 mm and 0.5-0 mm, and the particle size of the plate-shaped corundum is w (Al) in the plate-shaped corundum2O3) More than or equal to 99 percent, wherein the mass parts of each granularity are as follows:
15-25 parts of 1-2 mm plate-shaped corundum;
5-15 parts of 1-0.5 mm plate-shaped corundum;
10 to 20 parts of 0.5 to 0mm plate-shaped corundum.
6. The converter slag-stopping slide brick containing titanium nitride composite powder according to claim 2 or 3, characterized in that: the particle size of the titanium nitride powder is 20 nm; the granularity of the plate-shaped corundum powder is 325 meshes, and the plate-shaped corundum powder contains w (Al)2O3) Not less than 99 percent, the particle size of the α calcined alumina powder is2 mu m, and the particle size of the α calcined alumina powder is w (Al)2O3) More than or equal to 99 percent; the granularity of the metal aluminum powder is 200 meshes,w (Al) in the metal aluminum powder is more than or equal to 99 percent; the particle size of the metal silicon powder is 325 meshes, and w (Si) in the metal silicon powder is more than or equal to 98 percent; the granularity of the boron carbide powder is 325 meshes; the particle size of the nano zirconia powder is 1 mu m, and the w (ZrO) in the nano zirconia powder2)≥99％。
7. The converter slag-stopping slide brick containing titanium nitride composite powder according to claim 2 or 3, characterized in that: the solid phenolic resin powder is Carbores P, wherein w (solid content of C) in the Carbores P is more than or equal to 80 percent; the w (solid content of C) in the thermosetting phenolic resin is more than or equal to 50 percent.
8. The method for preparing the converter slag-stopping slide plate brick containing the titanium nitride composite powder of claim 3 is characterized by comprising the following steps: the method comprises the following steps: the preparation method comprises the steps of uniformly mixing the granules in proportion, then uniformly mixing the composite powder and the solid phenolic resin powder in proportion under a vacuum condition to prepare premixed powder, then mixing the granules, the premixed powder, the thermosetting phenolic resin and the organic silicon resin at a high speed, and finally molding, drying and finish machining to obtain the finished product.
9. The method for preparing the converter slag-stopping slide plate brick containing the titanium nitride composite powder according to claim 8, which is characterized in that: the method comprises the following steps:
(1) preparing the granules: preparing granules according to the mass parts of the raw materials;
(2) premixing powder: dry-mixing the composite powder and the solid phenolic resin powder for 25-35 min under vacuum to uniformly disperse the fine powder components;
(3) high-speed mixing: mixing the granular material prepared in the step (1) with the premixed powder in the step (2), adding thermosetting phenolic resin and organic silicon resin, mixing for 8-10 min, ageing the uniformly mixed pug in a thermostatic chamber for 8-10 h, wherein the thermostatic chamber is required to keep the temperature at 25 ℃ and the relative humidity at 45-65%;
(4) molding: forming the pug trapped in the step (3) into a semi-finished product blank by using a LAEIS 2500-ton hydraulic press;
(5) and (3) drying: naturally cooling the semi-finished blank prepared in the step (4) for 12 hours, then putting the semi-finished blank into a gas dryer, dividing the drying temperature into two sections, uniformly heating the first section to 110 ℃ at 30 ℃ per hour, then preserving the heat for 20 hours, and uniformly heating the second section to 210 ℃ at 30 ℃ per hour, and preserving the heat for 12 hours;
(6) and grinding and finish machining by using a numerical control grinding machine to obtain a finished product.
10. The method for preparing the converter slag-stopping slide plate brick containing the titanium nitride composite powder according to claim 9, which is characterized in that: vacuumizing by adopting a planetary vibration high-energy ball mill in the step (2); in the step (3), an EIRICH intensive mixer is used for uniformly mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911329143.6A CN110922173A (en) | 2019-12-20 | 2019-12-20 | Converter slag-stopping sliding plate brick added with titanium nitride composite powder and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911329143.6A CN110922173A (en) | 2019-12-20 | 2019-12-20 | Converter slag-stopping sliding plate brick added with titanium nitride composite powder and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110922173A true CN110922173A (en) | 2020-03-27 |
Family
ID=69863539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911329143.6A Pending CN110922173A (en) | 2019-12-20 | 2019-12-20 | Converter slag-stopping sliding plate brick added with titanium nitride composite powder and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110922173A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111484320A (en) * | 2020-04-15 | 2020-08-04 | 河北建材职业技术学院 | Non-cooling steel rolling heating furnace corundum-titanium nitride sliding rail material and preparation method thereof |
| CN111875363A (en) * | 2020-07-16 | 2020-11-03 | 北京科技大学 | Preparation method of electrofused mullite containing titanium carbonitride solid solution |
| CN112876265A (en) * | 2021-02-09 | 2021-06-01 | 马鞍山利尔开元新材料有限公司 | Titanium-silicon-carbon metal composite converter slag-stopping sliding plate brick and preparation method thereof |
| CN113461410A (en) * | 2021-07-22 | 2021-10-01 | 河南熔金高温材料股份有限公司 | Al-Al added with titanium nitride coated mullite2O3Sliding plate brick and production method thereof |
| CN115057692A (en) * | 2022-06-08 | 2022-09-16 | 郑州海迈高温材料研究院有限公司 | Aluminum-carbon sliding brick added with ferrotitanium alloy and production method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1944330A (en) * | 2006-10-19 | 2007-04-11 | 武汉科技大学 | Slide board refractory containing titanium carbo-nitride and its preparing method |
| CN101417882A (en) * | 2008-11-11 | 2009-04-29 | 阳泉市下千耐火材料有限公司 | Sliding tile for controlling molten steel flow speed and method for producing the same |
| CN101429037A (en) * | 2007-11-07 | 2009-05-13 | 鞍钢集团耐火材料公司 | Aluminum-carbon sliding tile and method of producing the same |
| CN103464738A (en) * | 2013-08-21 | 2013-12-25 | 卫辉熔金高温材料有限责任公司 | Titanium-added metal combined sliding plate and production method thereof |
-
2019
- 2019-12-20 CN CN201911329143.6A patent/CN110922173A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1944330A (en) * | 2006-10-19 | 2007-04-11 | 武汉科技大学 | Slide board refractory containing titanium carbo-nitride and its preparing method |
| CN101429037A (en) * | 2007-11-07 | 2009-05-13 | 鞍钢集团耐火材料公司 | Aluminum-carbon sliding tile and method of producing the same |
| CN101417882A (en) * | 2008-11-11 | 2009-04-29 | 阳泉市下千耐火材料有限公司 | Sliding tile for controlling molten steel flow speed and method for producing the same |
| CN103464738A (en) * | 2013-08-21 | 2013-12-25 | 卫辉熔金高温材料有限责任公司 | Titanium-added metal combined sliding plate and production method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 林育炼: "《耐火材料与洁净钢生产技术》", 30 April 2012, 北京：冶金工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111484320A (en) * | 2020-04-15 | 2020-08-04 | 河北建材职业技术学院 | Non-cooling steel rolling heating furnace corundum-titanium nitride sliding rail material and preparation method thereof |
| CN111875363A (en) * | 2020-07-16 | 2020-11-03 | 北京科技大学 | Preparation method of electrofused mullite containing titanium carbonitride solid solution |
| CN112876265A (en) * | 2021-02-09 | 2021-06-01 | 马鞍山利尔开元新材料有限公司 | Titanium-silicon-carbon metal composite converter slag-stopping sliding plate brick and preparation method thereof |
| CN113461410A (en) * | 2021-07-22 | 2021-10-01 | 河南熔金高温材料股份有限公司 | Al-Al added with titanium nitride coated mullite2O3Sliding plate brick and production method thereof |
| CN115057692A (en) * | 2022-06-08 | 2022-09-16 | 郑州海迈高温材料研究院有限公司 | Aluminum-carbon sliding brick added with ferrotitanium alloy and production method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110922173A (en) | Converter slag-stopping sliding plate brick added with titanium nitride composite powder and preparation method thereof | |
| CN1327994C (en) | Heat preservation agent in use for molded casting, and producing technique | |
| CN100486927C (en) | Method for fabricating low carbon Al2O3 slide brick based on bauxite beta-Sialon | |
| CN111704466B (en) | Silicon carbide-magnesium aluminate spinel-aluminum composite refractory material | |
| US4585485A (en) | Refractory sliding nozzle plate | |
| CN110818437B (en) | Preparation method of silicon carbide-oxide composite refractory product | |
| CN112876265A (en) | Titanium-silicon-carbon metal composite converter slag-stopping sliding plate brick and preparation method thereof | |
| CN111807822B (en) | Aluminum-zirconium-carbon sliding plate added with aluminum-silicon alloy and fired at low temperature and production method thereof | |
| CN101417882B (en) | Sliding tile for controlling molten steel flow speed and method for producing the same | |
| CN108585797B (en) | Self-lubricating magnesium slag-stopping sliding plate brick added with boron nitride and preparation method thereof | |
| CN108395228B (en) | Fired non-oil-immersed chrome-magnesium-aluminum non-carbonaceous sliding plate brick and preparation method thereof | |
| CN102335738A (en) | Composite submerged nozzle and manufacturing method thereof | |
| CN115321956B (en) | High-temperature liquid phase toughened magnesia carbon brick and preparation method thereof | |
| CN111646812B (en) | Silicon carbide-calcium hexaluminate-aluminum composite refractory material | |
| AU621685B2 (en) | Magnesium-carbon refractories | |
| CN100519005C (en) | Aluminium carbon zirconium sliding gate brick produced by unburning process | |
| CN104710183B (en) | Quick-drying iron runner castable as well as preparation method ad use method thereof | |
| CN113754450A (en) | Preparation method of high-stability stemming for iron notch of COREX furnace | |
| CN111362677B (en) | Environment-friendly chromium-free air brick and preparation method thereof | |
| CN110526689B (en) | High-strength blast furnace taphole channel prefabricated part and preparation method thereof | |
| CN113979761B (en) | Ternary composite self-repairing baking-free sliding plate brick and preparation method thereof | |
| CN110981513A (en) | Chrome corundum slag-high bauxite composite carbon-free ladle down nozzle brick and preparation method thereof | |
| CN116287534A (en) | Low-carbon composite converter tapping hole brick and preparation method thereof | |
| CN112624743B (en) | Sliding plate brick for blocking slag at converter steel tapping hole formed by casting and production method | |
| CN1280043A (en) | Slide sprue brick containg sialon |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200327 |