CN116239374A - Anti-chlorination carbonization refractory material and preparation method thereof - Google Patents
Anti-chlorination carbonization refractory material and preparation method thereof Download PDFInfo
- Publication number
- CN116239374A CN116239374A CN202310398690.XA CN202310398690A CN116239374A CN 116239374 A CN116239374 A CN 116239374A CN 202310398690 A CN202310398690 A CN 202310398690A CN 116239374 A CN116239374 A CN 116239374A
- Authority
- CN
- China
- Prior art keywords
- potassium
- chlorination
- carbonization
- containing low
- brick
- 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
- 238000005660 chlorination reaction Methods 0.000 title claims abstract description 41
- 239000011819 refractory material Substances 0.000 title claims abstract description 19
- 238000003763 carbonization Methods 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 43
- 239000011591 potassium Substances 0.000 claims abstract description 43
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 39
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 31
- 239000011449 brick Substances 0.000 claims abstract description 21
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 14
- 239000004927 clay Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000012071 phase Substances 0.000 claims abstract description 11
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 11
- 238000005245 sintering Methods 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000009471 action Effects 0.000 claims abstract description 8
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 5
- 230000002035 prolonged effect Effects 0.000 claims abstract description 4
- 239000011241 protective layer Substances 0.000 claims abstract description 4
- 239000001038 titanium pigment Substances 0.000 claims abstract description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000010304 firing Methods 0.000 claims abstract description 3
- 239000011521 glass Substances 0.000 claims abstract description 3
- 239000007791 liquid phase Substances 0.000 claims abstract description 3
- 230000001590 oxidative effect Effects 0.000 claims abstract description 3
- 239000001301 oxygen Substances 0.000 claims abstract description 3
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 3
- 239000010703 silicon Substances 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 19
- 239000011230 binding agent Substances 0.000 claims description 13
- 238000000465 moulding Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 3
- WBHAUHHMPXBZCQ-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound COC1=CC=CC(C)=C1O WBHAUHHMPXBZCQ-UHFFFAOYSA-N 0.000 claims description 2
- 229920001353 Dextrin Polymers 0.000 claims description 2
- 239000004375 Dextrin Substances 0.000 claims description 2
- 229920001131 Pulp (paper) Polymers 0.000 claims description 2
- 235000019425 dextrin Nutrition 0.000 claims description 2
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 claims description 2
- 230000032683 aging Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 14
- 238000003825 pressing Methods 0.000 abstract description 2
- 238000011049 filling Methods 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 15
- 238000009835 boiling Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000000460 chlorine Substances 0.000 description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 5
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000011468 face brick Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 238000009870 titanium metallurgy Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material 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
- C04B35/16—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 silicates other than clay
- C04B35/18—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 silicates other than clay rich in aluminium oxide
- C04B35/185—Mullite 3Al2O3-2SiO2
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/02—Halides of titanium
- C01G23/022—Titanium tetrachloride
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a chlorination-resistant carbonization refractory material and a preparation method thereof. The material takes potassium-containing low-aluminum mullite as aggregate, takes potassium-containing low-aluminum mullite, silicon carbide and combined clay as matrix, and is formed by mixing by an edge runner mill, and then pressing after material filling. And (3) drying the blank, and sintering in an oxidizing atmosphere in a high-temperature kiln, wherein the maximum sintering temperature is 1490-1550 ℃. When firing, the partial pressure of oxygen on the brick blank is gradually reduced from outside to inside, silicon carbide on the brick surface is oxidized to form a cristobalite phase, the cristobalite phase is gradually dissolved under the action of a potassium-containing liquid phase to form a high-silicon glass phase, pores on the brick surface are filled, the porosity of the brick surface is greatly reduced, a protective layer similar to a glaze layer is formed, and the service life of a chlorination furnace for producing titanium pigment by a chlorination method can be greatly prolonged.
Description
Technical Field
The invention relates to a chlorination-resistant carbonization refractory material and a preparation method thereof, belonging to the field of refractory materials.
Background
Titanium metallurgy generally adopts a chloride metallurgy mode to extract titanium element from ilmenite or titanium-rich materials in the form of titanium tetrachloride, and then metallic titanium or titanium oxide is produced according to the selective reduction or oxidation of downstream products; the titanium chloride metallurgy is mainly divided into two kinds of molten salt chlorination and boiling chlorination according to the different reaction systems. The boiling chlorination is a mainstream process for producing titanium tetrachloride in recent years because the boiling chlorination has the advantages of high productivity, no waste salt generation and the like, and particularly the international advanced titanium dioxide production technology adopting the boiling chlorination method is a production process; the boiling chlorination of the titanium metallurgy process is mainly carried out in a boiling chlorination furnace, and the lining material is the most important component part of the boiling chlorination furnace and is a key related to whether the titanium metallurgy process can be normally used and operated; the lining of the whole boiling chlorination furnace has the main functions of forming an airflow boundary and forming the constraint of impinging stream so as to enable materials to be fluidized reasonably; and plays a role in heat insulation and heat insulation under high-temperature reaction; in the whole operation process, the components in the chlorination furnace are very complex, and the main components are as follows: high titanium slag particles TiCl 4 、Cl 2 、O 2 、CO、CO 2 、N 2 Etc.; the boiling chlorination furnace is mainly divided into the following parts: because of the special structure of the boiling chlorination furnace, the chlorine gas inlet is mainly arranged at the section and uniformly distributed around the section. After the gas is introduced, impinging stream is formed, and an upward fluidized reaction bed is formed under the restraint of the furnace bottom and the surrounding lining. The normal working temperature of the furnace bottom and the lining of the reaction section is 900-1000 ℃, and the area is mainly subjected to the direct impact and friction action of furnace burden under the action of impact flow; the part is raised due to the impact of the materialsThe abrasion gas intrudes and the carbon deposition reacts to easily damage the lining material. The damage causes are mainly as follows: a. the thermal effect is thermal load and thermal shock; b. chemical action: the lining material is slaked and damaged due to the invasion of chemical elements such as chlorine, alkali metal, slag and the like, and the chemical action of the chlorine and the refractory material; c. mechanical action: the lining material is damaged due to friction of the material particles and abrasion of the dust-laden flue gas.
Patent CN103086724B "preparation method of mullite ceramic glazed composite large brick for chlorination furnace" discloses a preparation method of mullite ceramic glazed composite refractory material for lining of high-temperature chlorination furnace in production of titanium pigment by chlorination method. According to the method, the glaze mixed solution is painted or sprayed with 2-5 mm low-temperature glazed high-temperature glaze on the brick surface by adopting manual painting or spraying equipment, and a layer of high-temperature glazed layer which is 1-3 mm thick and resistant to corrosion of chlorine, titanium tetrachloride and strong acid is generated on the brick surface in the subsequent baking process, so that leakage and corrosion of high-temperature chlorine, high-temperature titanium tetrachloride, strong acid and chlorinated impurities are avoided. The method is difficult to implement, and the problems of peeling, falling and the like easily occur in the high-temperature baking process, so that the brick is difficult to protect.
In the actual operation process, the rear part of the thermal face brick is extremely easy to erode due to the temperature gradient and the permeation of chlorine, so that the rear part of the thermal face brick is slowly hollowed out. Therefore, the service life of the hot-face brick of the chlorination furnace is often about 8 months, and phenomena such as sudden gas blow-by or collapse and the like are easy to occur, so that a series of problems are brought to the safe production and stable operation of enterprises.
Disclosure of Invention
In order to improve the service life of a boiling chlorination furnace and improve the phenomenon that the existing refractory material is easy to react at the rear part of a hot face brick and hollow from the inside, the invention provides a chlorination-resistant carbonization refractory material and a preparation method thereof.
The invention adopts the following technical scheme for accomplishing the purposes:
a chlorination resistant carbonized refractory material, characterized in that: the raw materials of the anti-chlorination carbonization refractory material comprise the following components in percentage by weight:
35 to 55 percent of 3 to 1mm potassium-containing low-aluminum mullite grains,
10 to 30 percent of 1 to 0.088mm potassium-containing low-aluminum mullite grains,
2-25% of 200-mesh silicon carbide fine powder,
10 to 20 percent of 325-mesh potassium-containing low-aluminum mullite fine powder,
3 to 5 percent of 325 mesh high potassium combined clay fine powder,
3-5% of external binding agent.
Al in low-aluminum mullite containing potassium 2 O 3 The content is 44-46%, K 2 The O content is 0.2-0.5%.
The SiC content of the 200-mesh silicon carbide fine powder is more than or equal to 95 percent.
325 mesh high potassium combined clay fines K 2 The O content is 1.8-3.0%.
The external binder can be one or a combination of a plurality of resins, paper pulp, dextrin and aluminum dihydrogen phosphate solution.
Mixing potassium-containing low-alumina mullite serving as an aggregate, potassium-containing low-alumina mullite, silicon carbide and binding clay serving as matrixes by an edge runner mill, pressing and forming after the mixture is fed, drying a blank, and sintering in an oxidizing atmosphere in a high-temperature kiln at the highest sintering temperature of 1490-1550 ℃; when firing, the partial pressure of oxygen on the brick blank is gradually reduced from outside to inside, silicon carbide on the brick surface is oxidized to form a cristobalite phase, the cristobalite phase is gradually dissolved under the action of a potassium-containing liquid phase to form a high-silicon glass phase, air holes on the brick surface are filled, the porosity of the brick surface is greatly reduced, a protective layer similar to a glaze layer is formed, and the rest SiC in the brick is relatively stable under the reducing atmosphere of a chlorination furnace, so that the service life of the chlorination furnace for producing titanium pigment by a chlorination method is greatly prolonged.
Compared with the prior art, the method has the beneficial effects that under the premise of meeting the existing performance requirements, the method utilizes the dissolution of liquid generated by combining the potassium-containing raw materials and the high-potassium combined clay fine powder relative to the cristobalite phase generated by the oxidation of SiC on the surface of the brick to generate the high silica glass phase, fills the surface air holes, greatly reduces the porosity of the surface layer of the brick, and forms a protective layer similar to a glaze layer. The service life of the lining brick of the chlorination furnace produced by the technology is prolonged to more than 3 years.
Description of the embodiments
The present invention will now be described by way of example for the purpose of fully illustrating the features of the present invention, but the embodiments of the present invention are not limited to the following examples, and may be appropriately modified within the allowable range according to the actual circumstances:
the invention will be described with reference to specific examples:
examples
The anti-chlorination carbonization refractory material prepared by using the technology of the patent comprises the following ingredients: 3-1mm potassium-containing low alumina mullite grains (Al 2 O 3 Content of 45.2%, K 2 O content 0.35%) 50%, potassium-containing low alumina mullite particles 20% 1-0.088mm, 200 mesh silicon carbide fine powder 15%,325 mesh potassium-containing low alumina mullite fine powder 10%,325 mesh high potassium-binding clay fine powder (K) 2 O content 2.25%) 5%, plus binder paper slurry 5%. Adding the binding agent into the uniformly mixed aggregate, adding the premixed fine powder part, mixing by an edge mill, and performing machine press molding after material mixing. And drying the blank, and sintering at 1490 ℃.
Examples
The anti-chlorination carbonization refractory material prepared by using the technology of the patent comprises the following ingredients: 3-1mm potassium-containing low alumina mullite grains (Al 2 O 3 Content of 44.1%, K 2 0.5% of O content) of 40%, 25% of potassium-containing low-alumina mullite grains of 1-0.088mm, 20% of 200-mesh silicon carbide fine powder, 12% of 325-mesh potassium-containing low-alumina mullite fine powder, and 325-mesh high-potassium-binding clay fine powder (K) 2 2.89% O) 3%, plus 4% binder resin solution. Adding the binding agent into the uniformly mixed aggregate, adding the premixed fine powder part, mixing by an edge mill, and performing machine press molding after material mixing. And drying the blank, and sintering at 1550 ℃.
Examples
The anti-chlorination carbonization refractory material prepared by using the technology of the patent comprises the following ingredients: 3-1mm potassium-containing low alumina mullite grains (Al 2 O 3 Content of 45.9%, K 2 0.21 percent of O content) 35 percent, 20 percent of 1-0.088mm potassium-containing low-aluminum mullite grains, 25 percent of 200-mesh silicon carbide fine powder, 16 percent of 325-mesh potassium-containing low-aluminum mullite fine powder,325 mesh high potassium combined clay fines (K) 2 2.25% of O) and 3.5% of bonding agent paste liquid. Adding the binding agent into the uniformly mixed aggregate, adding the premixed fine powder part, mixing by an edge mill, and performing machine press molding after material mixing. Drying the blank, and sintering at 1500 ℃.
Examples
The anti-chlorination carbonization refractory material prepared by using the technology of the patent comprises the following ingredients: 3-1mm potassium-containing low alumina mullite grains (Al 2 O 3 Content of 45.6%, K 2 55% of O content 0.25%), 10% of potassium-containing low-alumina mullite grains of 1-0.088mm, 10% of 200-mesh silicon carbide fine powder, 20% of 325-mesh potassium-containing low-alumina mullite fine powder, and 325-mesh high-potassium-binding clay fine powder (K) 2 O content 1.96%) 5%, plus binder paper slurry 5%. Adding the binding agent into the uniformly mixed aggregate, adding the premixed fine powder part, mixing by an edge mill, and performing machine press molding after material mixing. Drying the blank, and sintering at 1530 ℃.
Examples
The anti-chlorination carbonization refractory material prepared by using the technology of the patent comprises the following ingredients: 3-1mm potassium-containing low alumina mullite grains (Al 2 O 3 Content of 45%, K 2 45% of O content 0.25%), 30% of potassium-containing low-alumina mullite grains of 1-0.088mm, 2% of 200-mesh silicon carbide fine powder, 25% of 325-mesh potassium-containing low-alumina mullite fine powder, and 325-mesh high-potassium-binding clay fine powder (K) 2 O content 2.66%) 3%, plus 3% binder paper slurry. Adding the binding agent into the uniformly mixed aggregate, adding the premixed fine powder part, mixing by an edge mill, and performing machine press molding after material mixing. The green body is dried and then burned at 1510 ℃.
Claims (6)
1. A chlorination resistant carbonized refractory material, characterized in that: the raw materials of the anti-chlorination carbonization refractory material comprise the following components in percentage by weight:
35 to 55 percent of 3 to 1mm potassium-containing low-aluminum mullite grains,
10 to 30 percent of 1 to 0.088mm potassium-containing low-aluminum mullite grains,
2-25% of 200-mesh silicon carbide fine powder,
10 to 20 percent of 325-mesh potassium-containing low-aluminum mullite fine powder,
3 to 5 percent of 325 mesh high potassium combined clay fine powder,
3-5% of external binding agent.
2. The anti-chlorinated carbonization refractory according to claim 1, wherein: al in low-aluminum mullite containing potassium 2 O 3 The content is 44-46%, K 2 The O content is 0.2-0.5%.
3. The anti-chlorinated carbonization refractory according to claim 1, wherein: the SiC content of the 200-mesh silicon carbide fine powder is more than or equal to 95 percent.
4. The anti-chlorinated carbonization refractory according to claim 1, wherein: 325 mesh high potassium combined clay fines K 2 The O content is 1.8-3.0%.
5. The anti-chlorinated carbonization refractory according to claim 1, wherein: the external binder can be one or a combination of a plurality of resins, paper pulp, dextrin and aluminum dihydrogen phosphate solution.
6. The preparation method of the anti-chlorination carbonization refractory material is characterized in that the preparation method comprises the steps of taking potassium-containing low-aluminum mullite as aggregate, taking potassium-containing low-aluminum mullite, silicon carbide and combined clay as matrixes, mixing by an edge runner mill, performing machine press molding after ageing, drying a blank, and sintering in an oxidizing atmosphere in a high-temperature kiln at the highest sintering temperature of 1490-1550 ℃; when firing, the partial pressure of oxygen on the brick blank is gradually reduced from outside to inside, silicon carbide on the brick surface is oxidized to form a cristobalite phase, the cristobalite phase is gradually dissolved under the action of a potassium-containing liquid phase to form a high-silicon glass phase, air holes on the brick surface are filled, the porosity of the brick surface is greatly reduced, a protective layer similar to a glaze layer is formed, and the rest SiC in the brick is relatively stable under the reducing atmosphere of a chlorination furnace, so that the service life of the chlorination furnace for producing titanium pigment by a chlorination method is greatly prolonged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310398690.XA CN116239374A (en) | 2023-04-14 | 2023-04-14 | Anti-chlorination carbonization refractory material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310398690.XA CN116239374A (en) | 2023-04-14 | 2023-04-14 | Anti-chlorination carbonization refractory material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116239374A true CN116239374A (en) | 2023-06-09 |
Family
ID=86624391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310398690.XA Pending CN116239374A (en) | 2023-04-14 | 2023-04-14 | Anti-chlorination carbonization refractory material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116239374A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0383851A (en) * | 1989-08-25 | 1991-04-09 | Mitsubishi Materials Corp | Mullite-based sintered compact and production thereof |
| US6458732B1 (en) * | 1999-06-07 | 2002-10-01 | Allied Mineral Products, Inc. | Lightweight dry refractory |
| CN101857449A (en) * | 2010-06-07 | 2010-10-13 | 长兴盛旺锅炉耐火保温防腐工程有限公司 | Siliceous mullite structure-insulating integrated composite brick and preparation method thereof |
| CN103351168A (en) * | 2013-05-10 | 2013-10-16 | 郑州瑞泰耐火科技有限公司 | Novel mullite brick and preparation method thereof |
| CN104944980A (en) * | 2015-05-29 | 2015-09-30 | 柳州普亚贸易有限公司 | Preparation method of wear-resistant corrosion-resistant brick |
| CN115073191A (en) * | 2022-07-13 | 2022-09-20 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of high-temperature-resistant redox atmosphere alternate refractory material |
| CN115073156A (en) * | 2022-07-13 | 2022-09-20 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of self-repairing refractory material for Catofin propane dehydrogenation reactor |
-
2023
- 2023-04-14 CN CN202310398690.XA patent/CN116239374A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0383851A (en) * | 1989-08-25 | 1991-04-09 | Mitsubishi Materials Corp | Mullite-based sintered compact and production thereof |
| US6458732B1 (en) * | 1999-06-07 | 2002-10-01 | Allied Mineral Products, Inc. | Lightweight dry refractory |
| CN101857449A (en) * | 2010-06-07 | 2010-10-13 | 长兴盛旺锅炉耐火保温防腐工程有限公司 | Siliceous mullite structure-insulating integrated composite brick and preparation method thereof |
| CN103351168A (en) * | 2013-05-10 | 2013-10-16 | 郑州瑞泰耐火科技有限公司 | Novel mullite brick and preparation method thereof |
| CN104944980A (en) * | 2015-05-29 | 2015-09-30 | 柳州普亚贸易有限公司 | Preparation method of wear-resistant corrosion-resistant brick |
| CN115073191A (en) * | 2022-07-13 | 2022-09-20 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of high-temperature-resistant redox atmosphere alternate refractory material |
| CN115073156A (en) * | 2022-07-13 | 2022-09-20 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of self-repairing refractory material for Catofin propane dehydrogenation reactor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1202334A (en) | Forming coherent refractory masses | |
| CN106045563B (en) | A kind of light blue pottery and its method for cooking | |
| CN1027691C (en) | Refractory, energy saving and corrosion-resisting ceramics coating | |
| CN106145976A (en) | Cement kiln andalusite mullite silicon carbide brick and preparation method thereof | |
| CN104496493A (en) | High temperature-resistant composite magnesia-alumina unburned brick and preparation method thereof | |
| CN111646812B (en) | Silicon carbide-calcium hexaluminate-aluminum composite refractory material | |
| CN110922173A (en) | Converter slag-stopping sliding plate brick added with titanium nitride composite powder and preparation method thereof | |
| CN107226682A (en) | A kind of high-temperature flame-proof ceramics and preparation method thereof | |
| CN108083765A (en) | Low heat conduction anti-strip brick and preparation method thereof | |
| CN108558416A (en) | A kind of ceramic firing kiln furnitures and preparation method | |
| CN108218445A (en) | A kind of andalusite sillimanite saggar and preparation method | |
| CN104926322A (en) | SiC sagger bottom-edge crack reparation agent and preparation method thereof | |
| CN109111209B (en) | Microcrystal material for cement kiln | |
| CN115583845A (en) | High-hardness high-wear-resistance embossed ceramic tile and preparation method thereof | |
| CN109970459B (en) | Columnar mullite high-abrasion-resistant brick and preparation method thereof | |
| CN103086724B (en) | Preparation method of mullite ceramic glazed composite large brick for chlorination furnace | |
| CN115073191A (en) | Preparation method of high-temperature-resistant redox atmosphere alternate refractory material | |
| CN108164275A (en) | A kind of resistant to corrosion zirconium oxide nozzle brick and preparation method thereof | |
| CN116239374A (en) | Anti-chlorination carbonization refractory material and preparation method thereof | |
| CN107673769A (en) | A kind of low silicon Sialon pushing off the slag flashboard and its production method | |
| CN115286404B (en) | Low-aluminum mullite castable for molybdenum-containing waste liquid incinerator and preparation method thereof | |
| CN105859262A (en) | Titanium-containing ceramic cup and preparation method thereof | |
| CN110698176A (en) | Environment-friendly low-shrinkage ceramic and preparation method thereof | |
| CN113979761B (en) | Ternary composite self-repairing baking-free sliding plate brick and preparation method thereof | |
| CN113200736B (en) | Furnace lining of ferrovanadium smelting 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 |