CN103332941A - Asphalt combined magnesia-carbon brick and production method thereof - Google Patents
Asphalt combined magnesia-carbon brick and production method thereof Download PDFInfo
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- CN103332941A CN103332941A CN2013102895914A CN201310289591A CN103332941A CN 103332941 A CN103332941 A CN 103332941A CN 2013102895914 A CN2013102895914 A CN 2013102895914A CN 201310289591 A CN201310289591 A CN 201310289591A CN 103332941 A CN103332941 A CN 103332941A
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Abstract
The invention belongs to the technical field of refractory materials, and especially relates to an asphalt combined magnesia-carbon brick and a production method thereof. The asphalt combined magnesia-carbon brick is composed of 78-92wt% of 97% fused magnesia, 2-10wt% of graphite, 0.8-5wt% of carbon black, 0.2-2wt% of sulfur and 1.2-5wt% of asphalt. The production method of the asphalt combined magnesia-carbon brick comprises the following steps: putting 97% fused magnesia particles in a bunker 1; putting the 97% fused magnesia particles, graphite, carbon black and sulfur in a bunker 2; putting asphalt in a bunker 3; heating the raw material in the bunker 1 in a particle heater; heating a mixing mill; placing the raw materials in the bunker 2 in the mixing mill, and dry-mixing; placing the raw material in the bunker 3 in the mixing mill, and starting high speed mixing; and adding the raw material in the particle heater to the mixing mill for mixing. The asphalt combined magnesia-carbon brick has the advantages of low cost, good thermal shock stability and good erosion resistance.
Description
Technical field
The invention belongs to technical field of refractory materials, relate in particular to a kind of pitch in conjunction with magnesia carbon brick and production method thereof.
Background technology
Magnesia carbon brick is the refractory materials risen the seventies, and it is to take electrosmelted magnesite clinker or magnesite clinker and carbon materials as raw material, and that with various carbonaceous binders, makes does not burn or light-burned refractory materials.Magnesia carbon brick had both kept the characteristics of basic refractory, had improved again in basic refractory spalling resistance poor simultaneously, easily absorbed the shortcomings such as slag, was widely used in the positions such as converter or ladle slag line, was a kind of energy-efficient refractory materials.But, along with the harshness day by day of metallurgy condition, the problems such as the oxidation-resistance of carbon bond material and hot strength are more outstanding.How effectively to improve carbon bond material oxidation-resistance and strength problem and become the emphasis that improves the magnesia carbon brick quality.
Take some areas that Japan is representative mainly makes wedding agent with liquid phenol resin solution, completes at normal temperatures mixingly, and moulding process, be known as the cold-forming magnesia carbon brick.Traditional comparatively environmental protection of cold-forming magnesia carbon brick, but oxidation-resistance is slightly poor, needs to add the metal oxidation resistance agent, and this can cause brick body heat-shock resistance variation.Also had in the past toward adding the example of asphalt powder in the cold-forming magnesia carbon brick, but because the caking phenomenon in the batch mixing process is serious, the asphalt powder add-on is limited, can not be evenly distributed in magnesia carbon brick.In addition, existing magnesia carbon brick is in actual steelmaking process, and its thermal conductivity is higher, and thermal losses is larger, and the raising of tapping temperature will certainly bring the increase of energy consumption, and simultaneously, the erosiveness of refractory materials also can increase.Secondly, existing magnesia carbon brick can consume the graphite resource of a large amount of preciousnesses, and the reduction of carbon content can cause the decline of brick body heat-shock resistance and slag resistance.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art part and provides a kind of cost low, and the good pitch of thermal shock resistance and resistance to fouling is in conjunction with magnesia carbon brick and production method thereof.
For solving the problems of the technologies described above, the present invention realizes like this.
A kind of pitch is in conjunction with magnesia carbon brick, and it contains following feed composition: 97% electrosmelted magnesite clinker, graphite, carbon black, sulphur and pitch; Its weight percentage is followed successively by:
97% electrosmelted magnesite clinker 78～92%;
Graphite 2～10%;
Carbon black 0.8～5%;
Sulphur 0.2～2%;
Pitch 1.2～5%
.
As a kind of preferred version, 97% electrosmelted magnesite clinker of the present invention comprises following specification particulate material successively: 5～3mm, 3～1mm and 200 orders.
As another kind of preferred version, the present invention also comprises 1～0.1mm specification particulate material.
Further, the weight ratio that feeds intake of 5～3mm of the present invention, 3～1mm, 0.1～1mm and 200 order specification 97% electrosmelted magnesite clinker particulate material is followed successively by 20～25:28～33:18～23:10～13.
Further, graphite of the present invention can be selected crystalline flake graphite-196.
Above-mentioned pitch, in conjunction with the production method of magnesia carbon brick, can be implemented as follows successively:
1, raw material is prepared:
A
1put into No. 1 feed bin of scale car after the 97% electrosmelted magnesite clinker particulate material weighing that is 5～3mm and 3～1mm by particle diameter;
B
1by particle diameter, be to put into No. 2 feed bins of scale car after 0.1～1mm and 200 order 97% electrosmelted magnesite clinker particulate material, graphite, carbon black and sulphur weighing;
C
1put into No. 3 feed bins of scale car in connection with agent pitch;
2, mixing:
A
2by step a
1raw material in described No. 1 feed bin is inserted in the particle heater and is heated to 220 ℃～300 ℃;
B
2mixing roll is heated to 130～160 ℃;
C
2close the mixing roll heating system, by step b
1described No. 2 bunker raw materials are inserted mixing roll, are dry mixed 1～4 minute;
D
2by step c
1described No. 3 bunker raw materials are inserted mixing roll, open high speed mixing 1～4 minute simultaneously;
E
2by step a
2raw material in described particle heater drops into mixing roll, mixing 3～6 minutes;
F
2mixing rear pug reaches 120 ℃～125 ℃.
Further, step b of the present invention
2in, mixing roll is heated to 150 ℃; Described step c
2in, No. 2 bunker raw material is dry mixed 2 minutes; Described steps d
2in, mixing 2 minutes of No. 3 bunker raw material high speeds; Described step e
2in, mixing 4 minutes of the raw material in the particle heater.
When the present invention makees wedding agent by pitch, pitch moves in brick, infiltrated between most particle and the particle inner air vent, and effectively wrap the surface of each particle, make granularity and air insulated during kiln discharge, under desirable light-burned condition, the actual weightlessness of pitch volatilization distillation is very little, brick strength improves greatly obviously should be owing to having eliminated the thick-layer pitch between the adjacent refractory particle in any position in the brick, the even carbon film formed on each particle has thus also caused pitch in conjunction with the hydration resistance of magnesia carbon brick and the raising of anti-thermal shock stability. can also improve the remaining carbon of brick in suitable atmosphere.
| Pitch is in conjunction with magnesia carbon brick | SiO 2 | Fe 2O 3 | Al 2O 3 | CaO | MgO | C |
| Data | 1.18 | 0.80 | 0.51 | 1.01 | 85.31 | 10.87 |
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described.Protection scope of the present invention not only is confined to the statement of following content.
Fig. 1 is process flow diagram of the present invention.
Embodiment
embodiment 1.
A kind of pitch is in conjunction with magnesia carbon brick, and it contains following feed composition: 97% electrosmelted magnesite clinker, graphite, carbon black, sulphur and pitch; Its weight percentage is followed successively by:
97% electrosmelted magnesite clinker 88%;
Graphite is crystalline flake graphite-196 5%;
Carbon black 3%;
Sulphur 1%;
Pitch
3%.
Above-mentioned 97% electrosmelted magnesite clinker comprises following specification particulate material successively: 4mm, 2mm and 200 orders.
embodiment 2.
A kind of pitch is in conjunction with magnesia carbon brick, and it contains following feed composition: 97% electrosmelted magnesite clinker, graphite, carbon black, sulphur and pitch; Its weight percentage is followed successively by:
97% electrosmelted magnesite clinker 89%;
Crystalline flake graphite-196 4%;
Carbon black 2%;
Sulphur 2%;
Pitch
3%.
Above-mentioned 97% electrosmelted magnesite clinker comprises following specification particulate material successively: 4mm, 2mm, 1 mm and 200 orders.The weight ratio that feeds intake of above-mentioned 4mm, 2mm, 1 mm and 200 order specification (particle diameter) 97% electrosmelted magnesite clinker particulate material is followed successively by 22:30:21:11.
embodiment 3.
A kind of pitch is in conjunction with magnesia carbon brick, and it contains following feed composition: 97% electrosmelted magnesite clinker, graphite, carbon black, sulphur and pitch; Its weight percentage is followed successively by:
97% electrosmelted magnesite clinker 87%;
Crystalline flake graphite-196 3%;
Carbon black 4%;
Sulphur 2%;
Pitch
4%.
Above-mentioned 97% electrosmelted magnesite clinker comprises following specification particulate material successively: 4mm, 2mm, 1 mm and 200 orders.The weight ratio that feeds intake of above-mentioned 4mm, 2mm, 1 mm and 200 order specification (particle diameter) 97% electrosmelted magnesite clinker particulate material is followed successively by 21:30:20:11.
Shown in Figure 1, above-mentioned pitch, in conjunction with the production method of magnesia carbon brick, is characterized in that, can implement successively as follows:
1, raw material is prepared:
A
1to after the 97% electrosmelted magnesite clinker particulate material weighing of particle diameter 4mm and 2mm, put into No. 1 feed bin of scale car;
B
1to after particle diameter 1mm and 200 order 97% electrosmelted magnesite clinker particulate material, graphite, carbon black and sulphur weighing, put into No. 2 feed bins of scale car;
C
1put into No. 3 feed bins of scale car in connection with agent pitch;
2, mixing:
A
2by step a
1raw material in described No. 1 feed bin is inserted in the particle heater and is heated to 220 ℃;
B
2mixing roll is heated to 150 ℃;
C
2close the mixing roll heating system, by step b
1described No. 2 bunker raw materials are inserted mixing roll, are dry mixed 2 minutes;
D
2by step c
1described No. 3 bunker raw materials are inserted mixing roll, open high speed mixing 2 minutes simultaneously;
E
2by step a
2raw material in described particle heater drops into mixing roll, mixing 4 minutes;
F
2mixing rear pug reaches 124 ℃.
embodiment 4.
Pitch, in conjunction with the production method of magnesia carbon brick, is characterized in that, can implement successively as follows:
1, raw material is prepared:
1.1 will put into No. 1 feed bin of scale car after particulate material 3mm, the weighing of 2mm particulate material;
1.2, by 1mm and 200 orders and graphite, carbon black, put into No. 2 feed bins of scale car after the sulphur weighing;
1.3 put into No. 3 feed bins of scale car in connection with agent pitch;
2, mixing:
2.1 load weighted No. 1 bunker raw material is all put into the particle heater and is heated to 280 ℃ in advance;
2.2 mixing roll is heated to 150 ℃;
2.3 close heating system after mixing roll to 150 ℃, load weighted No. 2 bunker raw materials are all put into to mixing roll, be dry mixed 2 minutes;
2.4 load weighted No. 3 bunker raw materials are all put into mixing roll in advance, open high speed mixing 2 minutes (opening at a high speed rear until close after mixing end) simultaneously;
2.5 high speed drops into mixing roll, mixing 4 minutes by the raw material in the particle heater after mixing 2 minutes;
2.6 mixing rear pug reaches 125 ℃;
2.7 discharging.
embodiment 5.
Be understandably, above about specific descriptions of the present invention, only for the present invention is described, and not be limited to the described technical scheme of the invention process example, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the present invention, to reach identical technique effect; Use needs as long as meet, all within protection scope of the present invention.
Claims (7)
1. a pitch, in conjunction with magnesia carbon brick, is characterized in that, contains following feed composition: 97% electrosmelted magnesite clinker, graphite, carbon black, sulphur and pitch; Its weight percentage is followed successively by:
97% electrosmelted magnesite clinker 78～92%;
Graphite 2～10%;
Carbon black 0.8～5%;
Sulphur 0.2～2%;
Pitch 1.2～5%
.
2. pitch as claimed in claim 1, in conjunction with magnesia carbon brick, is characterized in that: described 97% electrosmelted magnesite clinker comprises following specification particulate material successively: 5～3mm, 3～1mm and 200 orders.
3. pitch as claimed in claim 2, in conjunction with magnesia carbon brick, is characterized in that: also comprise 1～0.1mm specification particulate material.
4. pitch as claimed in claim 3, in conjunction with magnesia carbon brick, is characterized in that: the weight ratio that feeds intake of described 5～3mm, 3～1mm, 0.1～1mm and 200 order specification 97% electrosmelted magnesite clinker particulate material is followed successively by 20～25:28～33:18～23:10～13.
As the arbitrary described pitch of claim 1～4 in conjunction with magnesia carbon brick, it is characterized in that: described graphite is crystalline flake graphite-196.
6. pitch, in conjunction with the production method of magnesia carbon brick, is characterized in that as claimed in claim 4, implements successively as follows:
1, raw material is prepared
A
1put into No. 1 feed bin of scale car after the 97% electrosmelted magnesite clinker particulate material weighing that is 5～3mm and 3～1mm by particle diameter;
B
1by particle diameter, be to put into No. 2 feed bins of scale car after 0.1～1mm and 200 order 97% electrosmelted magnesite clinker particulate material, graphite, carbon black and sulphur weighing;
C
1put into No. 3 feed bins of scale car in connection with agent pitch;
2, mixing
A
2by step a
1raw material in described No. 1 feed bin is inserted in the particle heater and is heated to 220 ℃～300 ℃;
B
2mixing roll is heated to 130～160 ℃;
C
2close the mixing roll heating system, by step b
1described No. 2 bunker raw materials are inserted mixing roll, are dry mixed 1～4 minute;
D
2by step c
1described No. 3 bunker raw materials are inserted mixing roll, open high speed mixing 1～4 minute simultaneously;
E
2by step a
2raw material in described particle heater drops into mixing roll, mixing 3～6 minutes;
F
2mixing rear pug reaches 120 ℃～125 ℃.
7. pitch, in conjunction with the production method of magnesia carbon brick, is characterized in that as claimed in claim 6: described step b
2in, mixing roll is heated to 150 ℃; Described step c
2in, No. 2 bunker raw material is dry mixed 2 minutes; Described steps d
2in, mixing 2 minutes of No. 3 bunker raw material high speeds; Described step e
2in, mixing 4 minutes of the raw material in the particle heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310289591.4A CN103332941B (en) | 2013-07-11 | 2013-07-11 | Asphalt combined magnesia-carbon brick and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310289591.4A CN103332941B (en) | 2013-07-11 | 2013-07-11 | Asphalt combined magnesia-carbon brick and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103332941A true CN103332941A (en) | 2013-10-02 |
| CN103332941B CN103332941B (en) | 2015-04-15 |
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ID=49241169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310289591.4A Active CN103332941B (en) | 2013-07-11 | 2013-07-11 | Asphalt combined magnesia-carbon brick and production method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN103332941B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396705A (en) * | 2016-08-31 | 2017-02-15 | 浙江金汇华特种耐火材料有限公司 | Recycled eco-friendly aluminum magnesium carbon brick |
| CN111116177A (en) * | 2019-12-24 | 2020-05-08 | 江阴硕人节能环保科技有限公司 | Gunning mix and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811881A (en) * | 2010-04-20 | 2010-08-25 | 重庆钢铁(集团)有限责任公司 | MgO-C material slag line brick for steel ladle |
| CN102351548A (en) * | 2011-07-11 | 2012-02-15 | 浙江金磊高温材料股份有限公司 | Unburned magnesium-calcium-carbon brick and preparation method thereof |
-
2013
- 2013-07-11 CN CN201310289591.4A patent/CN103332941B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811881A (en) * | 2010-04-20 | 2010-08-25 | 重庆钢铁(集团)有限责任公司 | MgO-C material slag line brick for steel ladle |
| CN102351548A (en) * | 2011-07-11 | 2012-02-15 | 浙江金磊高温材料股份有限公司 | Unburned magnesium-calcium-carbon brick and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 周惠兴: "优质镁碳砖制造技术", 《冶金能源》 * |
| 赵会敏 等译: "高级耐火材料——镁碳砖", 《国外耐火材料》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396705A (en) * | 2016-08-31 | 2017-02-15 | 浙江金汇华特种耐火材料有限公司 | Recycled eco-friendly aluminum magnesium carbon brick |
| CN111116177A (en) * | 2019-12-24 | 2020-05-08 | 江阴硕人节能环保科技有限公司 | Gunning mix and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103332941B (en) | 2015-04-15 |
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