CN108840667A - A kind of preparation method of the high temperature resistant tundish dry material modified based on pyrophillite - Google Patents
A kind of preparation method of the high temperature resistant tundish dry material modified based on pyrophillite Download PDFInfo
- Publication number
- CN108840667A CN108840667A CN201810853479.1A CN201810853479A CN108840667A CN 108840667 A CN108840667 A CN 108840667A CN 201810853479 A CN201810853479 A CN 201810853479A CN 108840667 A CN108840667 A CN 108840667A
- Authority
- CN
- China
- Prior art keywords
- pyrophillite
- preparation
- high temperature
- temperature resistant
- modified based
- 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.)
- Withdrawn
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
- C04B35/01—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
- C04B35/03—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
-
- 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
- C04B2235/32—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
- C04B2235/34—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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/427—Diamond
-
- 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
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Products (AREA)
Abstract
The invention discloses a kind of preparation methods of high temperature resistant tundish dry material modified based on pyrophillite, include the following steps：Step 1 weighs following raw material：74-78 parts of magnesite clinker, modified pyrophillite 8-14 part, 4-8 part of clay, 5-9 parts of auxiliary agent, wherein magnesite clinker, modification pyrophillite, clay, auxiliary material mass ratio be 76:11:6:7.A kind of preparation method of the high temperature resistant tundish dry material modified based on pyrophillite of the present invention, the material at high temperature still stablize by strength character, and heat-resisting quantity is greatly improved compared with prior art.
Description
Technical field
The present invention relates to high temperature resistant technical fields, and in particular to a kind of high temperature resistant tundish dry modified based on pyrophillite
The preparation method of material.
Background technique
Tundish is the refractory material containers used in mini-mill steelmaking, receives to pour the steel to get off from ladle first
Then water is assigned in each crystallizer by middle water containing opening again, steel is as a kind of important basic raw material, in the world
Very important effect is played in the economic development of various countries；And pyrophillite is mostly with foliaceous, threadiness, radial and sheet block
Body output.White, grey, light blue, light yellow, light green color and green brown, streak white, transparent to translucent, on fresh face
In pearly luster, pyrophillite has grease sense when touching, and heats flaking, and do not dissolve in most of acid, is the one of clay mineral
Kind, belonging to crystalline texture is 2:The layered hydrous aluminium silicate mineral of 1 type draws, the present invention by its modification application in dry materials, can
Improve the high temperature resistance of dry materials.
Existing Chinese patent literature (publication number：CN106186975B a kind of high temperature resistant composite) is disclosed, by following
Component mixing, molding, natural curing, the drying of mass percent are made：White fused alumina 35~54%, pyrophyllite 5~15%, silicon are micro-
Powder 2~12%, magnesia 30~45%, pure calcium aluminate cement 5~15% and water 4~10%, the preparation method raw material of the material
Uniformly mixed, molding, natural curing are simultaneously dried, and drying course uses multistage linear temperature increase, though the material is using pyrophillite group
Match, but pyrophillite is unprocessed, surface property is inactive, and then composition properties are not also good enough.
Chinese patent literature (publication number：CN108191406A a kind of centre for adding rear magnesium aluminium spinel powder) is disclosed
Packet magnesium dry-type stock and preparation method thereof, the technical solution adopted is that：By 78~90wt% of magnesia, with rear spinelle fine powder 0~
12wt%, 5~8wt% of bonding agent, 2~5wt% of additive mixing, stir evenly, vibration moulding, in 180 DEG C~350 DEG C conditions
Lower baking demoulds to get tundish dry vibratory material, and the raw material proportioning of use is relatively simple, and main using magnesia as major ingredient, point is brilliant
Stone fine powder is auxiliary material, while preparation process is simple, and then effect still can further improve.
Summary of the invention
In view of the drawbacks of the prior art, the object of the present invention is to provide a kind of high temperature resistant tundish modified based on pyrophillite
The preparation method of dry materials, the material at high temperature still stablize by strength character, and heat-resisting quantity obtains very big compared with prior art
Improve.
The present invention solves technical problem and adopts the following technical scheme that：
The present invention provides a kind of preparation method of high temperature resistant tundish dry material modified based on pyrophillite, including it is following
Step：
Step 1 weighs following raw material：74-78 parts of magnesite clinker, pyrophillite 8-14 parts modified, 4-8 parts of clay,
5-9 parts of auxiliary agent, wherein magnesite clinker, modified pyrophillite, clay, auxiliary material mass ratio be 76:11:6:7；
Raw material in step 1 is added in high-speed mixer and mixes by step 2, and mixing revolving speed is 155-175r/
Min, mixing time 35-45min, is subsequently sent in mold, in vibration moulding, then toasts again, demoulds to get of the invention
Tundish dry material.
Preferably, the magnesite clinker carries out calcining 2h in 1605-1615 DEG C using light calcined magnesia.
Preferably, the light calcined magnesia is that magnesite powder is broken to 0.04mm, is placed at 950-1050 DEG C and calcines 35-
45min。
Preferably, the magnesite clinker bulk density is 3.43-3.45g.cm-3, apparent porosity 13.5-13.7%.
Preferably, the magnesite clinker bulk density is 3.44g.cm-3, apparent porosity 13.6%.
Preferably, the modified pyrophillite preparation method is that pyrophillite is added in pulverizer to crush, and crosses 210-
220 mesh are subsequently added to be stirred in deionized water, until suspension concentration is 65-75%, then add a nanometer magnalium point
Spar powder, is added while stirring, then adds inorganic crosslinking agent, continues to stir 15-25min, is then filtered, done
It is dry, complex will be obtained and carry out sided corona treatment 12-16min to get modified pyrophillite.
Preferably, the inorganic crosslinking agent is aluminium citrate, and wherein the mass-volume concentration of aluminium citrate is 105-
115mg/L。
Preferably, the sided corona treatment power is 5-7Kw, and treatment temperature is -5-15 DEG C, and the processing time is 12-20min.
Preferably, the auxiliary agent is diadust, a- aluminum oxide fine powder according to weight ratio 5:The mixture of 2 compositions.
Preferably, the baking condition is that temperature is risen to 140 DEG C, 35-45min is kept the temperature, then again by temperature with 8-12
DEG C/min is warming up to 280 DEG C, 15-25min is kept the temperature, temperature is then risen to 340 DEG C with 1-3 DEG C/min again, keeps the temperature 20min, with
After be cooled to room temperature.
Compared with prior art, the present invention has following beneficial effect：
(1) magnesite clinker of the present invention is that light calcined magnesia carries out secondary clacining, is formed by magnesia elevated temperature strength height, furthermore
After study when light calcined magnesia carries out calcining 2h in 1605-1615 DEG C, magnesite clinker bulk density is 3.44g.cm-3, show gas
Porosity is 13.6%, and the dry materials performance formed at this time is best.
(2) pyrophillite itself has fire resisting, high temperature resistance, while its structure is 2:The layered hydrous aluminosilicate of 1 type
Nanometer aluminum-spinel powder is distributed on its two-dimensional slice by mineral with two-dimensional layered structure, then with magnesite clinker knot
It closes, greatly enhances system stability, then enhance high-temperature pressure-proof, use sided corona treatment in modified pyrophillite preparation, can increase
Its strong interfacial energy, is easily combined between raw material, and diadust has chemical inertness, it is mixed with dry materials raw material,
System stability further enhances, and the present invention is in baking, and using intermittent warming, temperature is first risen to 140 DEG C, keeps the temperature 35-
45min preheats material first, then is warming up to 280 DEG C with 8-12 DEG C/min, and temperature is then risen to 340 with 1-3 DEG C/min again
DEG C, using staged alternating temperature, material strain effect is improved, then the stability of reinforcing material.
(3) nanometer aluminum-spinel, which is added, using modified pyrophillite mode in the present invention can be such that 1500 DEG C × 3h compression strength increases
Add 3.4MPa, improvement rate 20.6%, 1500 DEG C × 3h, flexural strength increases 1.9MPa, improvement rate 23.4%, adopt in addition,
The present invention is mentioned relative to comparative example 5, flexural strength in 1500 DEG C × 3h, increase rate 28.6%, 500 DEG C × 3h compression strength
High rate is 30.95%.
Specific embodiment
Combined with specific embodiments below, technical scheme in the embodiment of the invention is clearly and completely described, shows
So, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
Embodiment 1.
A kind of preparation method of high temperature resistant tundish dry material modified based on pyrophillite of the present embodiment, including following step
Suddenly：
Step 1 weighs following raw material：74 parts of magnesite clinker, modified 8 parts of pyrophillite, 4 parts of clay, 5 parts of auxiliary agent；
Raw material in step 1 is added in high-speed mixer and mixes by step 2, and mixing revolving speed is 155r/min,
Mixing time is 35min, is subsequently sent in mold, in vibration moulding, is then toasted again, is demoulded to get tundish of the invention
Dry materials.
The magnesite clinker of the present embodiment carries out calcining 2h in 1605 DEG C using light calcined magnesia.
The light calcined magnesia of the present embodiment is that magnesite powder is broken to 0.04mm, is placed at 950 DEG C and calcines 35min.
The magnesite clinker bulk density of the present embodiment is 3.43g.cm-3, apparent porosity 13.5%.
The modification pyrophillite preparation method of the present embodiment is that pyrophillite is added in pulverizer to crush, and crosses 210 mesh,
It is subsequently added to be stirred in deionized water, until suspension concentration is 65%, then adds a nanometer aluminum-spinel powder,
It is added while stirring, then adds inorganic crosslinking agent, continue to stir 15min, then filtered, dried, will obtained compound
Body carries out sided corona treatment 12min to get modified pyrophillite.
The inorganic crosslinking agent of the present embodiment is aluminium citrate, and wherein the mass-volume concentration of aluminium citrate is 105mg/L.
The sided corona treatment power of the present embodiment is 5Kw, and treatment temperature is -5 DEG C, and the processing time is 12min.
The auxiliary agent of the present embodiment is diadust, a- aluminum oxide fine powder according to weight ratio 5:The mixture of 2 compositions.
The baking condition of the present embodiment is that temperature is risen to 140 DEG C, 35min is kept the temperature, then again by temperature with 8 DEG C/min liter
Temperature keeps the temperature 15min to 280 DEG C, and temperature is then risen to 340 DEG C with 1 DEG C/min again, keeps the temperature 20min, is then cooled to room
Temperature.
Embodiment 2.
A kind of preparation method of high temperature resistant tundish dry material modified based on pyrophillite of the present embodiment, including following step
Suddenly：
Step 1 weighs following raw material：78 parts of magnesite clinker, modified 14 parts of pyrophillite, 8 parts of clay, auxiliary agent 9
Part；
Raw material in step 1 is added in high-speed mixer and mixes by step 2, and mixing revolving speed is 175r/min,
Mixing time is 45min, is subsequently sent in mold, in vibration moulding, is then toasted again, is demoulded to get tundish of the invention
Dry materials.
The magnesite clinker of the present embodiment carries out calcining 2h in 1615 DEG C using light calcined magnesia.
The light calcined magnesia of the present embodiment is that magnesite powder is broken to 0.04mm, is placed at 1050 DEG C and calcines 45min.
The magnesite clinker bulk density of the present embodiment is 3.45g.cm-3, apparent porosity 13.7%.
The modification pyrophillite preparation method of the present embodiment is that pyrophillite is added in pulverizer to crush, and crosses 220 mesh,
It is subsequently added to be stirred in deionized water, until suspension concentration is 75%, then adds a nanometer aluminum-spinel powder,
It is added while stirring, then adds inorganic crosslinking agent, continue to stir 25min, then filtered, dried, will obtained compound
Body carries out sided corona treatment 16min to get modified pyrophillite.
The inorganic crosslinking agent of the present embodiment is aluminium citrate, and wherein the mass-volume concentration of aluminium citrate is 115mg/L.
The sided corona treatment power of the present embodiment is 7Kw, and treatment temperature is 15 DEG C, and the processing time is 20min.
The auxiliary agent of the present embodiment is diadust, a- aluminum oxide fine powder according to weight ratio 5:The mixture of 2 compositions.
The baking condition of the present embodiment is that temperature is risen to 140 DEG C, keeps the temperature 35-45min, then again by temperature with 12 DEG C/
Min is warming up to 280 DEG C, keeps the temperature 25min, and temperature is then risen to 340 DEG C with 3 DEG C/min again, keeps the temperature 20min, then cools down again
To room temperature.
Embodiment 3.
A kind of preparation method of high temperature resistant tundish dry material modified based on pyrophillite of the present embodiment, including following step
Suddenly：
Step 1 weighs following raw material：76 parts of magnesite clinker, modified 11 parts of pyrophillite, 6 parts of clay, auxiliary agent 7
Part, wherein magnesite clinker, modified pyrophillite, clay, auxiliary material mass ratio be 76:11:6:7；
Raw material in step 1 is added in high-speed mixer and mixes by step 2, and mixing revolving speed is 160r/min,
Mixing time is 40min, is subsequently sent in mold, in vibration moulding, is then toasted again, is demoulded to get tundish of the invention
Dry materials.
The magnesite clinker of the present embodiment carries out calcining 2h in 1610 DEG C using light calcined magnesia.
The light calcined magnesia of the present embodiment is that magnesite powder is broken to 0.04mm, is placed at 1000 DEG C and calcines 40min.
The magnesite clinker bulk density of the present embodiment is 3.44g.cm-3, apparent porosity 13.6%.
The modification pyrophillite preparation method of the present embodiment is that pyrophillite is added in pulverizer to crush, and crosses 215 mesh,
It is subsequently added to be stirred in deionized water, until suspension concentration is 70%, then adds a nanometer aluminum-spinel powder,
It is added while stirring, then adds inorganic crosslinking agent, continue to stir 15-25min, then filtered, dried, will be answered
Zoarium carries out sided corona treatment 14min to get modified pyrophillite.
The inorganic crosslinking agent of the present embodiment is aluminium citrate, and wherein the mass-volume concentration of aluminium citrate is 110mg/L.
The sided corona treatment power of the present embodiment is 6Kw, and treatment temperature is 10 DEG C, and the processing time is 16min.
The auxiliary agent of the present embodiment is diadust, a- aluminum oxide fine powder according to weight ratio 5:The mixture of 2 compositions.
The baking condition of the present embodiment is that temperature is risen to 140 DEG C, 40min is kept the temperature, then again by temperature with 10 DEG C/min
280 DEG C are warming up to, 20min is kept the temperature, temperature is then risen to 340 DEG C with 2 DEG C/min again, 20min is kept the temperature, is then cooled to room
Temperature.
Comparative example 1.
It is essentially identical with the material and preparation process of embodiment 3, have only unlike nanometer aluminum-spinel not using changing
Property pyrophillite mode is added but mixes between the raw materials such as magnesite clinker, clay.
Comparative example 2.
It is essentially identical with the material and preparation process of embodiment 3, have only unlike to be not added with a- aluminium oxide in auxiliary agent thin
Powder.
Comparative example 3.
It is essentially identical with the material and preparation process of embodiment 3, it has only the difference is that not using corona in modified pyrophillite
Processing.
Comparative example 4.
It is essentially identical with the material and preparation process of embodiment 3, it has only the difference is that baking condition is changed to rise to temperature
340℃。
Comparative example 5.
Using Chinese patent literature (publication number：CN108191406A a kind of rear magnesium aluminium spinel powder of addition) is disclosed
1 raw material of embodiment and method in tundish magnesium dry-type stock and preparation method thereof.
Embodiment 3 and comparative example 1-5 the performance test results are as follows
Nanometer aluminum-spinel, which is added, using modified pyrophillite mode in the present invention can be such that 1500 DEG C × 3h compression strength increases
3.4MPa, improvement rate 20.6%, 1500 DEG C × 3h, flexural strength increases 1.9MPa, and improvement rate 23.4% is adopted in addition, originally
Invention is improved relative to comparative example 5, flexural strength in 1500 DEG C × 3h, increase rate 28.6%, 500 DEG C × 3h compression strength
Rate is 30.95%.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of preparation method of the high temperature resistant tundish dry material modified based on pyrophillite, which is characterized in that including following step
Suddenly：
Step 1 weighs following raw material：74-78 parts of magnesite clinker, modified pyrophillite 8-14 parts, 4-8 parts of clay, auxiliary agent
5-9 parts, wherein magnesite clinker, modified pyrophillite, clay, auxiliary material mass ratio be 76:11:6:7；
Raw material in step 1 is added in high-speed mixer and mixes by step 2, and mixing revolving speed is 155-175r/min,
Mixing time is 35-45min, is subsequently sent in mold, in vibration moulding, is then toasted again, is demoulded to get centre of the invention
Packet dry materials.
2. a kind of preparation method of high temperature resistant tundish dry material modified based on pyrophillite according to claim 1,
It is characterized in that, the magnesite clinker carries out calcining 2h in 1605-1615 DEG C using light calcined magnesia.
3. a kind of preparation method of high temperature resistant tundish dry material modified based on pyrophillite according to claim 2,
It is characterized in that, the light calcined magnesia is that magnesite powder is broken to 0.04mm, is placed at 950-1050 DEG C and calcines 35-45min.
4. a kind of preparation method of high temperature resistant tundish dry material modified based on pyrophillite according to claim 2,
It is characterized in that, the magnesite clinker bulk density is 3.43-3.45g.cm-3, apparent porosity 13.5-13.7%.
5. a kind of preparation method of high temperature resistant tundish dry material modified based on pyrophillite according to claim 4,
It is characterized in that, the magnesite clinker bulk density is 3.44g.cm-3, apparent porosity 13.6%.
6. a kind of preparation method of high temperature resistant tundish dry material modified based on pyrophillite according to claim 1,
It being characterized in that, the modified pyrophillite preparation method is that pyrophillite is added in pulverizer to crush, 210-220 mesh is crossed,
It is subsequently added to be stirred in deionized water, until suspension concentration is 65-75%, then adds a nanometer aluminum-spinel powder
Body is added while stirring, then adds inorganic crosslinking agent, continues to stir 15-25min, is then filtered, dried, will
Sided corona treatment 12-16min is carried out to complex to get modified pyrophillite.
7. a kind of preparation method of high temperature resistant tundish dry material modified based on pyrophillite according to claim 6,
It is characterized in that, the inorganic crosslinking agent is aluminium citrate, and wherein the mass-volume concentration of aluminium citrate is 105-115mg/L.
8. a kind of preparation method of high temperature resistant tundish dry material modified based on pyrophillite according to claim 6,
It is characterized in that, the sided corona treatment power is 5-7Kw, and treatment temperature is -5-15 DEG C, and the processing time is 12-20min.
9. a kind of preparation method of high temperature resistant tundish dry material modified based on pyrophillite according to claim 1,
It is characterized in that, the auxiliary agent is diadust, a- aluminum oxide fine powder according to weight ratio 5:The mixture of 2 compositions.
10. a kind of preparation method of high temperature resistant tundish dry material modified based on pyrophillite according to claim 1,
It is characterized in that, the baking condition is that temperature is risen to 140 DEG C, 35-45min is kept the temperature, then again by temperature with 8-12 DEG C/min
280 DEG C are warming up to, 15-25min is kept the temperature, temperature is then risen to 340 DEG C with 1-3 DEG C/min again, keeps the temperature 20min, it is then cold again
But to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810853479.1A CN108840667A (en) | 2018-07-30 | 2018-07-30 | A kind of preparation method of the high temperature resistant tundish dry material modified based on pyrophillite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810853479.1A CN108840667A (en) | 2018-07-30 | 2018-07-30 | A kind of preparation method of the high temperature resistant tundish dry material modified based on pyrophillite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108840667A true CN108840667A (en) | 2018-11-20 |
Family
ID=64195083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810853479.1A Withdrawn CN108840667A (en) | 2018-07-30 | 2018-07-30 | A kind of preparation method of the high temperature resistant tundish dry material modified based on pyrophillite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108840667A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923846A (en) * | 2019-11-25 | 2020-03-27 | 安徽三和刷业有限公司 | Production process of rolling brush bristles |
| CN115259839A (en) * | 2022-07-25 | 2022-11-01 | 中冶武汉冶金建筑研究院有限公司 | Integral refractory castable for preheating section side wall of belt type roasting machine and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928152A (en) * | 2009-06-25 | 2010-12-29 | 鞍钢集团耐火材料公司 | Heat insulation non-burning refractory brick and production method thereof |
| CN108129136A (en) * | 2018-01-04 | 2018-06-08 | 武汉科技大学 | Copper converter lower part magnesia-forsterite-carbon composite and preparation method thereof |
| CN108178641A (en) * | 2018-01-13 | 2018-06-19 | 江苏嘉耐高温材料有限公司 | A kind of tundish dry material and preparation method thereof |
-
2018
- 2018-07-30 CN CN201810853479.1A patent/CN108840667A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928152A (en) * | 2009-06-25 | 2010-12-29 | 鞍钢集团耐火材料公司 | Heat insulation non-burning refractory brick and production method thereof |
| CN108129136A (en) * | 2018-01-04 | 2018-06-08 | 武汉科技大学 | Copper converter lower part magnesia-forsterite-carbon composite and preparation method thereof |
| CN108178641A (en) * | 2018-01-13 | 2018-06-19 | 江苏嘉耐高温材料有限公司 | A kind of tundish dry material and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923846A (en) * | 2019-11-25 | 2020-03-27 | 安徽三和刷业有限公司 | Production process of rolling brush bristles |
| CN115259839A (en) * | 2022-07-25 | 2022-11-01 | 中冶武汉冶金建筑研究院有限公司 | Integral refractory castable for preheating section side wall of belt type roasting machine and preparation method thereof |
| CN115259839B (en) * | 2022-07-25 | 2023-03-21 | 中冶武汉冶金建筑研究院有限公司 | Integral refractory castable for preheating section side wall of belt type roasting machine and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104250099B (en) | Al2O3- MgO refractory casting materials and preparation method thereof | |
| CN101805198B (en) | Mullite steel fiber castable | |
| CN106518043B (en) | The preparation method of the siliceous bottom brick of molten tin bath of low-cost aluminum calcium | |
| CN109851374A (en) | Explosion-proof, long-life bottom brick of molten tin bath and preparation method thereof | |
| CN103588492A (en) | High-quality carbon-free aluminum-magnesium spinel brick used for refined steel ladle lining and preparation method thereof | |
| CN108975950A (en) | A kind of refractory brick of high temperature resistance and high strength and preparation method thereof | |
| CN108840667A (en) | A kind of preparation method of the high temperature resistant tundish dry material modified based on pyrophillite | |
| US20060260513A1 (en) | Construction cement and method for the producing thereof | |
| CN108675657A (en) | A method of preparing silicate-aluminium sulfate compound system clinker using waste residue | |
| CN115180907B (en) | Preparation method of foam concrete | |
| CN109678478A (en) | A kind of light, high-intensitive and lower thermal conductivity anorthite porous ceramic film material and preparation method thereof | |
| CN107311675B (en) | A kind of air brick and preparation method thereof by the preparation of industry byproduct aluminium chromium slag | |
| CN105859297B (en) | A kind of silicon carbide composite fireproof materials and preparation method thereof | |
| CN106431458B (en) | The method that tailings in vanadium extraction prepares porous ceramics | |
| CN114409348B (en) | High-temperature high-strength heat-resistant concrete and preparation method and application thereof | |
| CN114213114A (en) | High-temperature-resistant and anti-erosion corundum-mullite brick and preparation method thereof | |
| CN110204346A (en) | A kind of preparation method of mullite crystal whisker enhancing high alumina castable firing prefabricated section | |
| CN101434492B (en) | Large-sized special-shaped composite magnesium aluminate spinel product and technique for producing the same | |
| CN105036167A (en) | Calcium hexaluminate and preparation method thereof | |
| CN110078392B (en) | Method for producing ecological cement by using waste sintered shale brick powder | |
| CN106565250A (en) | High-strength alkali-resistant sialon-corundum composite refractory material and preparation method thereof | |
| CN107445628A (en) | A kind of preparation method of hydration-resisting calcium magnesite | |
| US5228914A (en) | Pumice containing composition | |
| CN106518047A (en) | Preparation method of magnesia hercynite | |
| CN103011881A (en) | Method for increasing quartz sand tailing powder content in aerated concrete product |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181120 |