CN110963806A - Titanium-calcium aluminate coal injection pipe castable and preparation method thereof - Google Patents
Titanium-calcium aluminate coal injection pipe castable and preparation method thereof Download PDFInfo
- Publication number
- CN110963806A CN110963806A CN201911081496.9A CN201911081496A CN110963806A CN 110963806 A CN110963806 A CN 110963806A CN 201911081496 A CN201911081496 A CN 201911081496A CN 110963806 A CN110963806 A CN 110963806A
- Authority
- CN
- China
- Prior art keywords
- titanium
- calcium
- aluminate
- castable
- coal
- 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.)
- Granted
Links
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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/34—Arrangements of heating devices
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
- C04B2235/3234—Titanates, not containing zirconia
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
Abstract
The invention relates to a calcium titanium aluminate coal-injection duct castable and a preparation method thereof, wherein the calcium titanium aluminate coal-injection duct castable comprises the following components in parts by weight: 50-75 parts of titanium aluminate, 5-10 parts of high titanium slag, 6-10 parts of alumina powder, 4-8 parts of titanium dioxide, 5-8 parts of pure calcium aluminate cement, 0.01-0.03 part of explosion-proof fiber, 0.01-0.03 part of water reducing agent and 6-10 parts of titanium dioxide sol. The preparation method comprises the following steps: and weighing the calcium titanium aluminate, the high titanium slag, the alumina powder, the titanium dioxide, the pure calcium aluminate cement, the explosion-proof fiber and the water reducing agent according to a proportion, uniformly mixing, adding the titanium dioxide sol, and uniformly stirring to obtain the calcium titanium aluminate coal-injection duct castable. The castable prepared by the invention has better thermal stability, alkali corrosion resistance and thermal shock resistance, and the service life of the coal injection pipe can be obviously prolonged.
Description
Technical Field
The invention belongs to the technical field of refractory materials, and particularly relates to a titanium calcium aluminate coal injection pipe castable and a preparation method thereof.
Background
With the development of the domestic cement industry, the requirements on refractory materials are stricter when a large number of large-scale cement plants are put into production. Although the investment of refractory materials is a small proportion of the total cement production line, the stability of the quality and the service life of the refractory materials have a large influence on the operation of the cement production line. From the aspect of materials, the existing coal injection pipe castable made of the aluminum-magnesium spinel material has the advantages of large volume density and poor thermal shock resistance, not only causes the weight of the coal injection pipe to be increased, but also is easy to peel off, is lower than the castable made of the aluminum-silicon material in strength, and in addition, the construction process needs to be fully vibrated and compacted, so that the self-flow effect can be achieved only by needing more water, and the castable is inconvenient to apply in special-shaped parts, complex in shape, narrow in construction space and not easy to vibrate like the coal injection pipe. The corundum-silicon carbide series and aluminum silicon-silicon carbide series coal-injection pipe castable has good strength and thermal shock resistance, but inevitably generates a silicon carbide oxidation phenomenon in the use process to influence the use effect of products, and in a novel dry-method cement rotary kiln, particularly the clinker at the coal-injection pipe part has high alkali content, and alkali components can react with minerals such as silicon dioxide (quartz, cristobalite, tridymite, mullite or corundum) in an aluminum-silicon refractory material to form potash feldspar, leucite and kaliophilite. These reactions have a large volume effect, and the refractory materials are damaged by alkali cracking due to the large expansion and thermal-mechanical force of the reactions, so that the service life of the corundum-silicon carbide-based and aluminum-silicon carbide-based coal nozzle castable is limited. Chinese patent with patent numbers ZL201510311418.9 and ZL201611021635.5 and Chinese patent application with application numbers 201811266655.8 and 201811544920.4 adopt titanium calcium aluminate as raw materials to prepare castable, but both adopt a mode of adding silica fume, and SiO with high activity in the silica fume2With CaO and Al in calcium titanoaluminate2O3CaO-Al is easy to generate in situ by the components2O3-SiO2Is a low-melting-point substance, which causes high temperature of the casting materialCan be lowered, thereby limiting the application of the coal injection pipe in the cement kiln.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the calcium titanium aluminate coal injection pipe castable and the preparation method thereof, the prepared castable has good thermal stability, alkali corrosion resistance and thermal shock resistance, and the service life of the coal injection pipe can be obviously prolonged.
In order to solve the technical problems, the invention provides a titanium calcium aluminate coal injection pipe castable which comprises the following components in parts by weight:
preferably, the calcium titanoaluminate comprises four specifications of 8-5 mm, 5-3 mm, 3-1 mm and 1-0 mm in particle size, and the weight parts of the four specifications are as follows:
preferably, Al in the calcium titanium aluminate2O3Not less than 72 percent by mass, not less than 12 percent by mass of CaO, and TiO2Is not less than 12 percent.
Preferably, the high titanium slag has a particle size of not more than 200 meshes.
Preferably, TiO in the high titanium slag2The mass percentage of (A) is not less than 85%.
Preferably, Al in the pure calcium aluminate cement2O3Is not less than 68 percent.
Preferably, the water reducing agent is a polycarboxylate.
Preferably, the TiO in the titanium dioxide sol2Is not less than 30 percent.
Preferably, the preparation method of the titanium calcium aluminate coal injection pipe castable comprises the following steps: and weighing the calcium titanium aluminate, the high titanium slag, the alumina powder, the titanium dioxide, the pure calcium aluminate cement, the explosion-proof fiber and the water reducing agent according to a proportion, uniformly mixing, adding the titanium dioxide sol, and uniformly stirring to obtain the calcium titanium aluminate coal-injection duct castable.
The invention has the beneficial effects that:
1. the invention adopts the byproduct of the external smelting method in the process of producing the ferrotitanium alloy, namely the titanium calcium aluminate, as the main raw material, thereby greatly reducing the cost of the raw material. Because the main crystal phase in the calcium titanium aluminate is calcium hexaluminate and calcium titanium aluminate, and the secondary crystal phase is composed of a small amount of high-temperature phases such as calcium dialuminate, aluminum titanate, calcium titanate and the like, the volume expansion effect can not be generated when the secondary crystal phase reacts with alkaline substances, the strength and the compactness of the castable can be further improved by a glass phase generated in a matrix, and the castable has the characteristics of good thermal stability, alkali erosion resistance, no hydration, low thermal expansion coefficient, good thermal shock resistance, excellent wear resistance and the like.
2. The matrix adopted by the invention can react at high temperature to generate an aluminum titanate binding phase, so that the thermal shock resistance of the castable is further improved, the service life of the castable can be comparable with that of a coal injection pipe castable prepared by adding silicon carbide, and the prepared calcium titanoaluminate coal injection pipe castable has the characteristics of excellent wear resistance, strong chemical erosion resistance, high loaded softening temperature point, high strength, excellent thermal shock stability, good structural stripping resistance, small high-temperature creep value and high hardness, so that the service life of the coal injection pipe castable is greatly prolonged, and the normal operation of cement kiln equipment is effectively ensured.
Detailed Description
Example 1
The titanium calcium aluminate coal injection pipe castable comprises the following components in parts by weight:
wherein Al in the calcium titanium aluminate2O3Not less than 72 percent by mass, not less than 12 percent by mass of CaO, and TiO2The mass percentage content of (A) is not less than 12%; TiO in the high titanium slag2The mass percentage content of (A) is not less than 85 percent; in the pure calcium aluminate cementAl2O3The mass percentage content of (A) is not less than 68 percent; the water reducing agent is polycarboxylate; TiO in the titanium dioxide sol2Is not less than 30 percent.
The preparation method of the magnesium spinel anti-skinning castable comprises the following steps: and weighing the calcium titanium aluminate, the high titanium slag, the alumina powder, the titanium dioxide, the pure calcium aluminate cement, the explosion-proof fiber and the water reducing agent according to a proportion, uniformly mixing, adding the titanium dioxide sol, and uniformly stirring to obtain the calcium titanium aluminate coal-injection duct castable.
Example 2
The titanium calcium aluminate coal injection pipe castable comprises the following components in parts by weight:
wherein Al in the calcium titanium aluminate2O3Not less than 72 percent by mass, not less than 12 percent by mass of CaO, and TiO2The mass percentage content of (A) is not less than 12%; TiO in the high titanium slag2The mass percentage content of (A) is not less than 85 percent; al in the pure calcium aluminate cement2O3The mass percentage content of (A) is not less than 68 percent; the water reducing agent is polycarboxylate; TiO in the titanium dioxide sol2Is not less than 30 percent.
The preparation method of the magnesium spinel anti-skinning castable comprises the following steps: and weighing the calcium titanium aluminate, the high titanium slag, the alumina powder, the titanium dioxide, the pure calcium aluminate cement, the explosion-proof fiber and the water reducing agent according to a proportion, uniformly mixing, adding the titanium dioxide sol, and uniformly stirring to obtain the calcium titanium aluminate coal-injection duct castable.
Example 3
The titanium calcium aluminate coal injection pipe castable comprises the following components in parts by weight:
wherein Al in the calcium titanium aluminate2O3Not less than 72 percent by mass, not less than 12 percent by mass of CaO, and TiO2The mass percentage content of (A) is not less than 12%; TiO in the high titanium slag2The mass percentage content of (A) is not less than 85 percent; al in the pure calcium aluminate cement2O3The mass percentage content of (A) is not less than 68 percent; the water reducing agent is polycarboxylate; TiO in the titanium dioxide sol2Is not less than 30 percent.
The preparation method of the magnesium spinel anti-skinning castable comprises the following steps: and weighing the calcium titanium aluminate, the high titanium slag, the alumina powder, the titanium dioxide, the pure calcium aluminate cement, the explosion-proof fiber and the water reducing agent according to a proportion, uniformly mixing, adding the titanium dioxide sol, and uniformly stirring to obtain the calcium titanium aluminate coal-injection duct castable.
Example 4
The titanium calcium aluminate coal injection pipe castable comprises the following components in parts by weight:
wherein Al in the calcium titanium aluminate2O3Not less than 72 percent by mass, not less than 12 percent by mass of CaO, and TiO2The mass percentage content of (A) is not less than 12%; TiO in the high titanium slag2The mass percentage content of (A) is not less than 85 percent; al in the pure calcium aluminate cement2O3The mass percentage content of (A) is not less than 68 percent; the water reducing agent is polycarboxylate; TiO in the titanium dioxide sol2Is not less than 30 percent.
The preparation method of the magnesium spinel anti-skinning castable comprises the following steps: and weighing the calcium titanium aluminate, the high titanium slag, the alumina powder, the titanium dioxide, the pure calcium aluminate cement, the explosion-proof fiber and the water reducing agent according to a proportion, uniformly mixing, adding the titanium dioxide sol, and uniformly stirring to obtain the calcium titanium aluminate coal-injection duct castable.
The performance of the titanium calcium aluminate coal injection pipe castable prepared in the above examples 1-4 is as follows:
the invention adopts the byproduct of the external smelting method in the process of producing the ferrotitanium alloy, namely the titanium calcium aluminate, as the main raw material, thereby greatly reducing the cost of the raw material. Because the main crystal phase in the calcium titanium aluminate is calcium hexaluminate and calcium titanium aluminate, and the secondary crystal phase is composed of a small amount of high-temperature phases such as calcium dialuminate, aluminum titanate, calcium titanate and the like, the volume expansion effect can not be generated when the secondary crystal phase reacts with alkaline substances, the strength and the compactness of the castable can be further improved by a glass phase generated in a matrix, and the castable has the characteristics of good thermal stability, alkali erosion resistance, no hydration, low thermal expansion coefficient, good thermal shock resistance, excellent wear resistance and the like.
The matrix adopted by the invention can react at high temperature to generate an aluminum titanate binding phase, so that the thermal shock resistance of the castable is further improved, the service life of the castable can be comparable with that of a coal injection pipe castable prepared by adding silicon carbide, and the prepared calcium titanoaluminate coal injection pipe castable has the characteristics of excellent wear resistance, strong chemical erosion resistance, high loaded softening temperature point, high strength, excellent thermal shock stability, good structural stripping resistance, small high-temperature creep value and high hardness, so that the service life of the coal injection pipe castable is greatly prolonged, and the normal operation of cement kiln equipment is effectively ensured.
The above description is illustrative and not restrictive. Many modifications and variations of the present invention will be apparent to those skilled in the art in light of the above teachings, which will fall within the spirit and scope of the invention.
Claims (9)
1. The titanium calcium aluminate coal injection pipe castable is characterized by comprising the following components in parts by weight:
2. the calcium titanium aluminate coal injection pipe castable according to claim 1, wherein the calcium titanium aluminate comprises four specifications of 8-5 mm, 5-3 mm, 3-1 mm and 1-0 mm in particle size, and the four specifications comprise the following components in parts by weight:
3. the calcium titanium aluminate coal injection lance castable of claim 1 or 2, wherein Al in the calcium titanium aluminate is2O3Not less than 72 percent by mass, not less than 12 percent by mass of CaO, and TiO2Is not less than 12 percent.
4. The calcium titanoaluminate coal burner castable of claim 1, wherein the high titanium slag particle size is not greater than 200 mesh.
5. The calcium titanium aluminate coal injection pipe castable according to claim 1 or 4, wherein the TiO in the high titanium slag is2The mass percentage of (A) is not less than 85%.
6. The calcium titanium aluminate coal burner castable of claim 1, wherein Al in the pure calcium aluminate cement2O3Is not less than 68 percent.
7. The calcium titanoaluminate coal injection pipe castable material of claim 1, wherein the water reducing agent is a polycarboxylate.
8. According to claim1, the titanium calcium aluminate coal injection pipe castable is characterized in that TiO in the titanium dioxide sol2Is not less than 30 percent.
9. The preparation method of the calcium titanoaluminate coal-injection duct castable according to claim 1, characterized by comprising the following steps: and weighing the calcium titanium aluminate, the high titanium slag, the alumina powder, the titanium dioxide, the pure calcium aluminate cement, the explosion-proof fiber and the water reducing agent according to a proportion, uniformly mixing, adding the titanium dioxide sol, and uniformly stirring to obtain the calcium titanium aluminate coal-injection duct castable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911081496.9A CN110963806B (en) | 2019-11-07 | 2019-11-07 | Titanium-calcium aluminate coal injection pipe castable and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911081496.9A CN110963806B (en) | 2019-11-07 | 2019-11-07 | Titanium-calcium aluminate coal injection pipe castable and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110963806A true CN110963806A (en) | 2020-04-07 |
| CN110963806B CN110963806B (en) | 2022-03-15 |
Family
ID=70030409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911081496.9A Active CN110963806B (en) | 2019-11-07 | 2019-11-07 | Titanium-calcium aluminate coal injection pipe castable and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110963806B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4943544A (en) * | 1989-10-10 | 1990-07-24 | Corhart Refractories Corporation | High strength, abrasion resistant refractory castable |
| CN101857448A (en) * | 2010-06-03 | 2010-10-13 | 安吉科灵磁性材料有限公司 | Titanium dioxide sol reinforced corundum-mullite product and production method thereof |
| CN105036774A (en) * | 2015-08-04 | 2015-11-11 | 武汉科技大学 | Calcium titanium-aluminate prefabricated part for vanadium smelting reverberatory furnace lining and preparation method thereof |
| CN107311677A (en) * | 2017-07-12 | 2017-11-03 | 武汉科技大学 | A kind of titanium calcium aluminate mullite Multiphase refractory material and preparation method thereof |
-
2019
- 2019-11-07 CN CN201911081496.9A patent/CN110963806B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4943544A (en) * | 1989-10-10 | 1990-07-24 | Corhart Refractories Corporation | High strength, abrasion resistant refractory castable |
| CN101857448A (en) * | 2010-06-03 | 2010-10-13 | 安吉科灵磁性材料有限公司 | Titanium dioxide sol reinforced corundum-mullite product and production method thereof |
| CN105036774A (en) * | 2015-08-04 | 2015-11-11 | 武汉科技大学 | Calcium titanium-aluminate prefabricated part for vanadium smelting reverberatory furnace lining and preparation method thereof |
| CN107311677A (en) * | 2017-07-12 | 2017-11-03 | 武汉科技大学 | A kind of titanium calcium aluminate mullite Multiphase refractory material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 林宗寿: "《水泥"十万"个为什么 9》", 30 April 2010, 武汉理工大学出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110963806B (en) | 2022-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102701764B (en) | Sintered alumina-silica refractory material and preparation method thereof | |
| CN101885617B (en) | Wear and corrosion resistant castable prepared from bauxite-based homogenous material and preparation method thereof | |
| WO2020083408A1 (en) | Preparation method for titanium composite anti-erosion wear-resistant refractory castable | |
| CN102701763B (en) | Low-aluminum sintered alumina-silica refractory material and preparation method thereof | |
| CN104355634B (en) | A kind of aluminum oxide electric furnace cover and preparation method thereof | |
| CN102060444B (en) | Foam glass ceramic and preparation method thereof | |
| CN107602086B (en) | Magnesium-calcium ramming mass produced by using waste refractory materials and manufacturing method thereof | |
| CN110723963B (en) | Blast furnace tapping channel castable containing nano alumina and preparation method thereof | |
| CN105819875B (en) | Refractory castable for Ausmelt copper smelting furnace flue and preparation method thereof | |
| CN106187125B (en) | Chromium fused alumina zirconia aggregate, mixed active powder, chromium zirconium boule composite and preparation method thereof | |
| CN104355630A (en) | Wear-resistant and thermal shock-resistant lining for air supply branch pipe of iron-making blast furnace and preparation method thereof | |
| CN101570441A (en) | Preparation method for wear, alkali resistant castable refractory material | |
| CN104446547B (en) | A kind of medium-frequency induction furnace furnace lining material and preparation method thereof and using method | |
| CN110451998A (en) | A kind of bottom of steel ladle castable | |
| CN101618966A (en) | Ladle castable | |
| CN112079608A (en) | Self-flowing heat-resistant concrete using waste electric porcelain | |
| CN114560710B (en) | Ceramic-bonded hercynite kiln mouth castable and preparation method thereof | |
| CN109970459B (en) | Columnar mullite high-abrasion-resistant brick and preparation method thereof | |
| CN112479693A (en) | High-strength thermal shock-resistant wear-resistant silicon mullite brick and production process thereof | |
| CN1515372A (en) | Preparation method of Al2O3-MgO-ZrO2 ladle air plug | |
| CN111646784A (en) | Al (aluminum)2O3-SiC-C refractory castable and preparation method thereof | |
| CN114195529B (en) | High-strength magnesia refractory mortar for refining ladle | |
| CN113321495A (en) | Cement-free high-performance pumping furnace hearth material | |
| CN110963806B (en) | Titanium-calcium aluminate coal injection pipe castable and preparation method thereof | |
| CN115286404B (en) | Low-aluminum mullite castable for molybdenum-containing waste liquid incinerator and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |