CN110950669A - Formula and preparation method of forsterite brick cup - Google Patents
Formula and preparation method of forsterite brick cup Download PDFInfo
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- CN110950669A CN110950669A CN201911070136.9A CN201911070136A CN110950669A CN 110950669 A CN110950669 A CN 110950669A CN 201911070136 A CN201911070136 A CN 201911070136A CN 110950669 A CN110950669 A CN 110950669A
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- 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
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- 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
- C04B35/20—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 magnesium oxide, e.g. forsterite
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- 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
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- 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
- C04B2235/3241—Chromium oxides, chromates, or oxide-forming salts thereof
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- 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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/425—Graphite
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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- 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
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- C—CHEMISTRY; METALLURGY
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
- C04B2235/9623—Ceramic setters properties
Abstract
The invention discloses a forsterite brick cup formula and a preparation method thereof, wherein the formula provided by the invention comprises the following components in percentage by weight; 65-70% of forsterite particles, 25-30% of magnesium-chromium synthetic powder, 4-7% of clay powder, 1-2% of graphite, 3-5% of inorganic binder and 3-4% of liquid resin.
Description
Technical Field
The invention belongs to the technical field of brick bases, and particularly relates to a forsterite brick base formula and a preparation method thereof.
Background
Most of the original continuous casting tundish pocket bricks are made of high-alumina or aluminum-magnesium, and the production process is mainly divided into 2 types: one method is to use alumina clinker and magnesia of each grade as main raw materials, add a small amount of graphite, combine by water glass, etc., high-pressure forming after mixing, and then baking to obtain a finished product; and the other one is that alumina clinker and magnesia of each grain size are used as main raw materials, cement, micro powder and the like are used as binding agents, the mixed pug is added into a mould for vibration molding, demoulding is carried out after the normal temperature curing, and then the finished product is obtained by baking.
With the rapid development of the aluminum smelting industry and the refractory material industry in recent years, the demand of the alumina clinker and the magnesia market increases, the price of raw materials tends to rise continuously, and the production cost of the tundish pocket brick rises due to the rising of water, so that at present, many tundish pocket brick products are stolen and reduced in material for reducing the cost, so that the quality of the tundish pocket brick is reduced, the high-temperature strength is low, the volume stability is poor, molten steel is easy to permeate around the pocket brick during continuous casting of a plurality of blast furnaces, and the tundish pocket brick is eroded prematurely, so that a steel penetrating accident at the position of the pocket brick is caused.
Disclosure of Invention
In order to solve the above problems, the present invention provides the following technical solutions: the formula of the forsterite brick cup comprises forsterite particles, magnesium chromium synthetic powder, clay powder, graphite, an inorganic bonding agent and liquid resin in percentage by weight as follows:
65% -70% of forsterite particles
20 to 30 percent of magnesium-chromium synthetic powder
4 to 7 percent of clay powder
1 to 2 percent of graphite
3 to 5 percent of inorganic binder
3% -4% of liquid resin.
Further, the preferable weight percentage of the formula is as follows:
forsterite particle 67%
20 percent of magnesium-chromium synthetic powder
Clay powder 5%
1.5 percent of graphite
3 percent of inorganic binder
3.5 percent of liquid resin.
Further, the specification of the forsterite particle is 5-0 mm.
Furthermore, the particle size of the magnesium-chromium synthetic powder is less than 0.088 mm.
Further, the particle size of the clay powder is less than 0.1 mm.
Further, the particle size of the graphite is 100 meshes, and the carbon content is 95%.
The invention provides a preparation method of the forsterite seating brick formula, which comprises the following steps;
s1, blending; mixing forsterite particles, magnesium-chromium synthetic powder, clay powder, graphite, an inorganic binder and liquid resin according to weight percentage;
s2, mixing materials; adding the forsterite particles, the inorganic bonding agent and the liquid resin into a high-speed mixing roll for 10-20 minutes, and then adding the magnesium-chromium synthetic powder, the clay powder and the graphite, mixing and mixing for 15 minutes to obtain pug;
s3, ageing; standing the pug for 12-24 hours at constant temperature;
s4, pressing and forming; adding the pug into a mold, and pressing the pug into a required size through a friction brick press to obtain a stone brick;
s5, drying; baking the pressed and formed stone brick at 200 ℃ for 24 hours;
s6, sampling inspection; and carrying out sampling inspection and chemical examination on the dried stone bricks.
Further, the temperature of the high-speed kneader in step S2 is 30 to 60 ℃.
Further, the pressure of the pug formed by the friction brick press in the step S4 is 600 tons.
The brick cup made of forsterite greatly reduces the production cost of the traditional continuous casting tundish brick cup made of alumina, has the advantages of easily available raw materials, reasonable formula and low cost, the thermal expansion rate of the product at 1000 ℃ is only about 1.0, the brick cup is not easy to deform during high-temperature use, the strength meets the use requirement, acid-base reaction with a working lining alkaline brick caused by high temperature is avoided due to weak alkalinity, the service life of the brick cup is prolonged, the damage degree and speed of the brick cup are reduced, and the brick cup can be still used when the temperature reaches 1540 ℃ or even higher.
The invention provides a preparation method of a forsterite brick cup formula, wherein the ageing time is 12-24 hours, the ageing time is properly prolonged, so that the mixing materials are combined more uniformly, the plasticity and the bonding performance of a bonding agent are fully exerted, the forming performance of a blank is improved, and the refractoriness under load and creep temperature are further improved; the volume density of the forsterite particle brick is reduced; optimizing the slag resistance and the erosion resistance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention.
Example 1
The formula of the forsterite brick cup comprises forsterite particles, magnesium chromium synthetic powder, clay powder, graphite, an inorganic bonding agent and liquid resin in percentage by weight as follows:
65 percent of forsterite particles
20 percent of magnesium-chromium synthetic powder
Clay powder 5%
1 percent of graphite
5 percent of inorganic binder
Liquid resin 4%
The preparation method comprises the following steps:
s1, blending; mixing the forsterite particles, the magnesium-chromium synthetic powder, the clay powder and the graphite according to the weight percentage;
s2, mixing materials; adding the forsterite particles, the inorganic bonding agent and the liquid resin into a high-speed mixing mill for 10 minutes, adding the magnesium-chromium synthetic powder, the clay powder and the graphite, mixing and mixing for 15 minutes to obtain pug, and discharging after the temperature reaches 30 ℃;
s3, ageing; standing the pug for 12 hours at constant temperature;
s4, pressing and forming; adding the pug into a mould, pressing into a required size by a friction brick press to obtain a stone brick, wherein the pressure of the pug formed by the friction brick press is 600 tons;
s5, drying; baking the pressed and formed stone brick at 200 ℃ for 24 hours;
s6, sampling inspection; and carrying out sampling inspection and chemical examination on the dried stone bricks.
And packaging and warehousing after the product is qualified by sampling inspection, wherein the test result of the finished product is shown in table 1.
Example 2
The formula of the forsterite brick cup comprises forsterite particles, magnesium chromium synthetic powder, clay powder, graphite, an inorganic bonding agent and liquid resin in percentage by weight as follows:
forsterite particle 67%
20 percent of magnesium-chromium synthetic powder
Clay powder 5%
1.5 percent of graphite
3 percent of inorganic binder
3.5% of liquid resin
The preparation method comprises the following steps:
s1, blending; mixing the forsterite particles, the magnesium-chromium synthetic powder, the clay powder and the graphite according to the weight percentage;
s2, mixing materials; adding the forsterite particles, the inorganic bonding agent and the liquid resin into a high-speed mixing mill for 15 minutes, adding the magnesium-chromium synthetic powder, the clay powder and the graphite, mixing and mixing for 15 minutes to obtain pug, and discharging after the temperature reaches 40 ℃;
s3, ageing; standing the pug for 18 hours at constant temperature;
s4, pressing and forming; adding the pug into a mould, pressing into a required size by a friction brick press to obtain a stone brick, wherein the pressure of the pug formed by the friction brick press is 600 tons;
s5, drying; baking the pressed and formed stone brick at 200 ℃ for 24 hours;
s6, sampling inspection; and carrying out sampling inspection and chemical examination on the dried stone bricks.
And packaging and warehousing after the product is qualified by sampling inspection, wherein the test result of the finished product is shown in table 1.
Example 3
The formula of the forsterite brick cup comprises forsterite particles, magnesium chromium synthetic powder, clay powder, graphite, an inorganic bonding agent and liquid resin in percentage by weight as follows:
forsterite particle 70%
19 percent of magnesium-chromium synthetic powder
Clay powder 4%
1 percent of graphite
3 percent of inorganic binder
Liquid resin 3%
The preparation method comprises the following steps:
s1, blending; mixing the forsterite particles, the magnesium-chromium synthetic powder, the clay powder and the graphite according to the weight percentage;
s2, mixing materials; adding the forsterite particles, the inorganic bonding agent and the liquid resin into a high-speed mixing mill for 20 minutes, adding the magnesium-chromium synthetic powder, the clay powder and the graphite, mixing and mixing for 15 minutes to obtain pug, and discharging after the temperature reaches 60 ℃;
s3, ageing; standing the pug for 124 hours at constant temperature;
s4, pressing and forming; adding the pug into a mould, pressing into a required size by a friction brick press to obtain a stone brick, wherein the pressure of the pug formed by the friction brick press is 600 tons;
s5, drying; baking the pressed and formed stone brick at 200 ℃ for 24 hours;
s6, sampling inspection; and carrying out sampling inspection and chemical examination on the dried stone bricks.
And packaging and warehousing after the product is qualified by sampling inspection, wherein the test result of the finished product is shown in table 1.
Table 1: the performance of the products obtained in the product examples 1-3 and the comparison example of the common product is tested.
It can be clearly seen from table 1 that compared with the common product, the product of the formula has low thermal expansion rate, large volume density, low porosity, and obviously improved normal-temperature compressive strength, thermal conductivity, creep rate and refractoriness under load, so that the product has longer service life.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the invention.
Claims (9)
1. A forsterite brick cup formula is characterized by comprising; the weight percentages are as follows:
65% -70% of forsterite particles
20 to 30 percent of magnesium-chromium synthetic powder
4 to 7 percent of clay powder
1 to 2 percent of graphite
3 to 5 percent of inorganic binder
3% -4% of liquid resin.
2. A forsterite brick cup formulation according to claim 1, comprising; the weight percentages are as follows:
forsterite particle 67%
20 percent of magnesium-chromium synthetic powder
Clay powder 5%
1.5 percent of graphite
3 percent of inorganic binder
3.5 percent of liquid resin.
3. The forsterite seating brick formulation as claimed in claim 1, wherein: the specification of the forsterite particles is 5-0 mm.
4. The forsterite seating brick formulation as claimed in claim 1, wherein: the particle size of the magnesium-chromium synthetic powder is less than 0.088 mm.
5. The forsterite seating brick formulation as claimed in claim 1, wherein: the particle size of the clay powder is less than 0.1 mm.
6. The forsterite seating brick formulation as claimed in claim 1, wherein: the particle size of the graphite is 100 meshes, and the carbon content is 95%.
7. The preparation method of the forsterite brick cup formula is characterized by comprising the following steps of:
s1, blending; mixing the forsterite particles, the magnesium-chromium synthetic powder, the clay powder and the graphite according to the weight percentage;
s2, mixing materials; adding the forsterite particles and water into a high-speed mixing roll for 10-20 minutes, adding the magnesium-chromium synthetic powder, the clay powder and the graphite, mixing and mixing for 15 minutes to obtain pug;
s3, ageing; standing the pug for 12-24 hours at constant temperature;
s4, pressing and forming; adding the pug into a mold, and pressing the pug into a required size through a friction brick press to obtain a stone brick;
s5, drying; baking the pressed and formed stone brick at 200 ℃ for 24 hours;
s6, sampling inspection; and carrying out sampling inspection and chemical examination on the dried stone bricks.
8. The method of claim 7, wherein the formulation comprises: the temperature of the high-speed mixing mill is 30-60 ℃.
9. The method of claim 7, wherein the formulation comprises: the pressure of the mud formed by the high-pressure brick machine is 600 tons.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911070136.9A CN110950669A (en) | 2019-11-05 | 2019-11-05 | Formula and preparation method of forsterite brick cup |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911070136.9A CN110950669A (en) | 2019-11-05 | 2019-11-05 | Formula and preparation method of forsterite brick cup |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589290A (en) * | 2012-03-15 | 2012-07-18 | 浙江大学苏州工业技术研究院 | Forsterite four-layered composite brick and manufacturing method thereof |
| CN102584278A (en) * | 2012-01-12 | 2012-07-18 | 浙江铭德新材科技有限公司 | Forsterite seating brick and production method of forsterite seating brick |
| CN103183515A (en) * | 2013-04-02 | 2013-07-03 | 辽宁科技大学 | Synthetic olivine brick for permanent linings of converter and magnesia shaft kiln, and preparation method thereof |
| CN103342567A (en) * | 2013-07-11 | 2013-10-09 | 营口和隆耐火材料有限公司 | Forsterite carbon brick and production method thereof |
| CN104909734A (en) * | 2015-06-18 | 2015-09-16 | 河南瑞泰耐火材料科技有限公司 | Magnesium-rich forsterite-spinel composite brick and preparation method thereof |
| CN106045533A (en) * | 2016-06-03 | 2016-10-26 | 宜兴新威利成耐火材料有限公司 | Periclase-forsterite-carbon brick cup for iron and steel continuous casting tundish and preparation method of brick cup |
| CN108706967A (en) * | 2018-06-08 | 2018-10-26 | 郑州凯翔耐火材料有限公司 | A kind of forsterite brick and its production technology |
-
2019
- 2019-11-05 CN CN201911070136.9A patent/CN110950669A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584278A (en) * | 2012-01-12 | 2012-07-18 | 浙江铭德新材科技有限公司 | Forsterite seating brick and production method of forsterite seating brick |
| CN102589290A (en) * | 2012-03-15 | 2012-07-18 | 浙江大学苏州工业技术研究院 | Forsterite four-layered composite brick and manufacturing method thereof |
| CN103183515A (en) * | 2013-04-02 | 2013-07-03 | 辽宁科技大学 | Synthetic olivine brick for permanent linings of converter and magnesia shaft kiln, and preparation method thereof |
| CN103342567A (en) * | 2013-07-11 | 2013-10-09 | 营口和隆耐火材料有限公司 | Forsterite carbon brick and production method thereof |
| CN104909734A (en) * | 2015-06-18 | 2015-09-16 | 河南瑞泰耐火材料科技有限公司 | Magnesium-rich forsterite-spinel composite brick and preparation method thereof |
| CN106045533A (en) * | 2016-06-03 | 2016-10-26 | 宜兴新威利成耐火材料有限公司 | Periclase-forsterite-carbon brick cup for iron and steel continuous casting tundish and preparation method of brick cup |
| CN108706967A (en) * | 2018-06-08 | 2018-10-26 | 郑州凯翔耐火材料有限公司 | A kind of forsterite brick and its production technology |
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