CN103204689B - Carbon-containing gunning mix for hot-state gunning mix of converter as well as preparation method and using method of carbon-containing gunning mix - Google Patents
Carbon-containing gunning mix for hot-state gunning mix of converter as well as preparation method and using method of carbon-containing gunning mix Download PDFInfo
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- CN103204689B CN103204689B CN201310148538.2A CN201310148538A CN103204689B CN 103204689 B CN103204689 B CN 103204689B CN 201310148538 A CN201310148538 A CN 201310148538A CN 103204689 B CN103204689 B CN 103204689B
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Abstract
The invention relates to a carbon-containing gunning mix for hot-state gunning mix of a converter. The carbon-containing gunning mix is prepared from the following raw materials in parts by weight: 85-90 parts of magnesia or calcium magnesite, 3-7 parts of instant powder sodium silicate, 4-10 parts of 90% carbon source, 2-5 parts of silicon oxide micropowder and 0.5-1.5 parts of hydroxyl carboxylate, wherein the magnesia or calcium magnesite is respectively machined into 25-35 parts of powder with the granularity of being more than or equal to 3mm and less than or equal to 1mm, 40-50 parts of powder with the granularity of being more than 1mm and less than or equal to 0.088mm and 20-30 parts of powder with the granularity of being more than 0m and less than or equal to 0.088mm. Compared with the prior art, the carbon-containing gunning mix has the beneficial effects that the construction process is simple and the working efficiency is improved; the adhesive rate reaches more than 90 percent, the waste to refractory materials is reduced, the service life is prolonged, the risk if adding phosphorus to molten steel is eliminated, the purity of the molten steel is greatly improved, and meanwhile, the damages of P2O5 to the environment, equipment and operators are also effectively avoided.
Description
Technical field
The present invention relates to converter spray repair service technique field, particularly for carbon containing Gunning refractory of converter thermal-state spray repair and preparation method thereof and using method.
Background technology
In tradition process for making, slag line under converter, the repairing at the positions such as gudgeon adopts supplement brick mostly, when labour intensity is large and have certain security risk, the effect of repairing can not reach steel-making requirements, Gunning refractory is the new high-tech product of 21st century, in steel melting furnace, moment makes brick and has replaced patch block, it is the ideal substitute of coverter pig supplement brick, common Gunning refractory is in order to guarantee its hot strength, the combination of many employing phosphoric acid salt, phosphoric acid salt can divide and parse P2O5 in pyroprocess, not only can work the mischief to environment, molten steel is caused the risk of phosphorization simultaneously, have a strong impact on the purity of molten steel, and then affect steel quality.
Summary of the invention
The object of the present invention is to provide a kind of molten steel phosphorization in steelmaking process that prevents, increase the converter carbon containing Gunning refractory for converter thermal-state spray repair in work-ing life.
For achieving the above object, the present invention realizes by the following technical solutions:
Carbon containing Gunning refractory for converter thermal-state spray repair, this carbon containing Gunning refractory is formed by weight ratio by following raw material: magnesia or calcium magnesia sand 85-90 part, instant powdery sodium silicate 3-7 part, 90% carbon source 4-10 part, ultrafine silica powder 2-5 part, hydroxyl hydroxy acid salt 0.5-1.5 part, wherein magnesia or calcium magnesia sand are processed into 3≤granularity≤1mm, 25-35 part; 1 < granularity≤0.088mm, 40-50 part; 0mm < granularity≤0.088mm, 20-30 part.
By resin and graphite, wherein one or both form 90% described carbon source, have guaranteed the carbon content of carbon containing Gunning refractory.
The making method that is used for the carbon containing Gunning refractory of converter thermal-state spray repair, completes according to the following steps:
1) raw material pulverizing screening fine grinding: magnesia or calcium magnesia sand are ground, are sieved into desired particle size by described grain size distribution;
2) bonding agent grinds altogether: by magnesia or calcium magnesia sand fine powder and instant powdery sodium silicate, resin, graphite, ultrafine silica powder, hydroxyl hydroxy acid salt according to weight weighing after, jointly add in vibration mill, grind altogether 1-3min, guarantee that raw material mixes;
3) feed in raw material, mix; In described raw material weight ratio, first add magnesia or the calcium magnesia sand particle of 3≤granularity≤1mm, 1 < granularity≤0.088mm, then add magnesia or the calcium magnesia sand particle of 0mm < granularity≤0.088mm, mix 2-5 minute; The bonding agent that adds again common mill to complete, mixed 5-10 minute, discharging;
The technical indicator of finished product is:
The using method that is used for the carbon containing Gunning refractory of converter thermal-state spray repair, completes according to the following steps:
A. according to repairing size, adjust the materials amount of this carbon containing Gunning refractory, the materials amount of a general deuterzooid carbon containing Gunning refractory is 800-1200 ㎏;
B. take the mode of mechanical spray repair to carry out spray repair to converter, first adjust compressed air pressure and the water yield, guarantee effectively adhering to of this carbon containing Gunning refractory;
C. nozzle alignment need to be repaired to position, carry out spray repair operation.
Compared with prior art, the invention has the beneficial effects as follows:
1. this product construction process is simple, and a people just can complete the patch work of whole converter, has improved working efficiency, and after repairing, repairs face good integrity, and intensity and volume stability are splendid, and steady quality is reliable, after spray repair, without baking, can directly come into operation.
2. this product adhesive rate reaches more than 90%, has reduced the waste of refractory materials.
3. without phosphorus residual in this product use procedure, stopped product to the risk of phosphorization in molten steel, for the purity of molten steel, had greatly and improved, also effectively avoided P simultaneously
2o
5harm to environment, equipment and operator.
4. due to the adding of ultrafine silica powder, strengthened the composition of matrix, after product is used, intensity is high, effectively raises the work-ing life of product.
5. this product has wide market outlook.
Embodiment
Below the specific embodiment of the present invention is further illustrated:
Embodiment 1
For the carbon containing Gunning refractory of converter thermal-state spray repair, by following raw material by weight ratio make:
The granularity of above-mentioned magnesia or calcium magnesia sand forms by following weight part proportioning:
30 parts of 3≤granularity≤1mm
1 45 parts of < granularity≤0.088mm
25 parts of 0mm < granularity≤0.088mm
The making method of carbon containing Gunning refractory is as follows:
1) raw material pulverizing screening fine grinding: magnesia or calcium magnesia sand are ground, are sieved into desired particle size by described grain size distribution;
2) bonding agent grinds altogether: by magnesia or calcium magnesia sand fine powder and instant powdery sodium silicate, resin, graphite, ultrafine silica powder, hydroxyl hydroxy acid salt according to weight weighing after, jointly add in vibration mill, grind altogether 1-3min, guarantee that raw material mixes;
3) feed in raw material, mix; In described raw material weight ratio, first add magnesia or the calcium magnesia sand particle of 3≤granularity≤1mm, 1 < granularity≤0.088mm, then add magnesia or the calcium magnesia sand particle of 0mm < granularity≤0.088mm, mix 2-5 minute; The bonding agent that adds again common mill to complete, mixed 5-10 minute, discharging;
The using method of carbon containing Gunning refractory, completes according to the following steps:
A. according to repairing size, adjust the materials amount of this carbon containing Gunning refractory, the materials amount of a general deuterzooid carbon containing Gunning refractory is 800-1200 ㎏;
B. take the mode of mechanical spray repair to carry out spray repair to converter, first adjust compressed air pressure and the water yield, guarantee effectively adhering to of this carbon containing Gunning refractory;
C. nozzle alignment need to be repaired to position, carry out spray repair operation.
Embodiment 2
A manufacture method for the pure carbon containing Gunning refractory of spy, by following raw materials in parts by weight ratio, made:
The granularity of above-mentioned magnesia or calcium magnesia sand forms by following weight part proportioning:
35 parts of 3≤granularity≤1mm
1 40 parts of < granularity≤0.088mm
25 parts of 0mm < granularity≤0.088mm
The making method of carbon containing Gunning refractory and using method are with embodiment 1.
Embodiment 3
A manufacture method for the pure carbon containing Gunning refractory of spy, by following raw materials in parts by weight ratio, made:
The granularity of above-mentioned magnesia or calcium magnesia sand forms by following weight part proportioning:
30 parts of 3≤granularity≤1mm
1 40 parts of < granularity≤0.088mm
30 parts of 0mm < granularity≤0.088mm
The making method of carbon containing Gunning refractory and using method are with embodiment 1.
The technical indicator of above-mentioned finished product is:
。
Claims (4)
1. for the carbon containing Gunning refractory of converter thermal-state spray repair, it is characterized in that, this carbon containing Gunning refractory is formed by weight ratio by following raw material: magnesia or calcium magnesia sand 85-90 part, instant powdery sodium silicate 3-7 part, 90% carbon source 4-10 part, ultrafine silica powder 2-5 part, hydroxyl hydroxy acid salt 0.5-1.5 part, wherein magnesia or calcium magnesia sand are processed into 3mm >=granularity >=1mm, 25-35 part; 1mm > granularity >=0.088mm 40-50 part; 0mm < granularity≤0.088mm, 20-30 part.
2. the carbon containing Gunning refractory for converter thermal-state spray repair according to claim 1, is characterized in that, by resin and graphite, wherein one or both form 90% described carbon source, have guaranteed the carbon content of carbon containing Gunning refractory.
3. the making method of the carbon containing Gunning refractory for converter thermal-state spray repair according to claim 1, is characterized in that, completes according to the following steps:
1) raw material pulverizing screening fine grinding: magnesia or calcium magnesia sand are ground, are sieved into desired particle size by described grain size distribution;
2) bonding agent grinds altogether: by magnesia or calcium magnesia sand fine powder and instant powdery sodium silicate, resin, graphite, ultrafine silica powder, hydroxyl hydroxy acid salt according to weight weighing after, jointly add in vibration mill, grind altogether 1-3min, guarantee that raw material mixes;
3) feed in raw material, mix; In described raw material weight ratio, the magnesia or the calcium magnesia sand particle that first add 3mm >=granularity >=1mm, 1mm > granularity >=0.088mm, the magnesia or the calcium magnesia sand particle that add 0mm < granularity≤0.088mm, mix 2-5 minute again; The bonding agent that adds again common mill to complete, mixed 5-10 minute, discharging;
The technical indicator of finished product is:
。
4. the using method of the carbon containing Gunning refractory for converter thermal-state spray repair according to claim 1, is characterized in that, completes according to the following steps:
A. according to repairing size, adjust the materials amount of this carbon containing Gunning refractory, the materials amount of a deuterzooid carbon containing Gunning refractory is 800-1200 ㎏;
B. take the mode of mechanical spray repair to carry out spray repair to converter, first adjust compressed air pressure and the water yield, guarantee effectively adhering to of this carbon containing Gunning refractory;
C. nozzle alignment need to be repaired to position, carry out spray repair operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310148538.2A CN103204689B (en) | 2013-04-25 | 2013-04-25 | Carbon-containing gunning mix for hot-state gunning mix of converter as well as preparation method and using method of carbon-containing gunning mix |
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| CN201310148538.2A CN103204689B (en) | 2013-04-25 | 2013-04-25 | Carbon-containing gunning mix for hot-state gunning mix of converter as well as preparation method and using method of carbon-containing gunning mix |
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| CN103204689A CN103204689A (en) | 2013-07-17 |
| CN103204689B true CN103204689B (en) | 2014-12-03 |
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| CN113233906B (en) * | 2021-06-16 | 2022-04-08 | 浙江自立高温科技股份有限公司 | Magnesium-calcium gunning mix suitable for smelting clean steel and preparation method and application thereof |
| CN117645466B (en) * | 2024-01-30 | 2024-03-29 | 河北国亮新材料股份有限公司 | Magnesium carbonaceous castable and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113101A (en) * | 2007-06-30 | 2008-01-30 | 河南省新密市荣耀炉料有限公司 | Magnesium gunning refractory for copper smelting-furnace |
| CN101537487A (en) * | 2008-03-21 | 2009-09-23 | 宝钢集团上海梅山有限公司 | Ladle liner restoring material |
| CN101863671A (en) * | 2010-05-07 | 2010-10-20 | 武汉钢铁(集团)公司 | Slag adhesion resistant gunning refractory for converter |
| CN102372487A (en) * | 2010-08-25 | 2012-03-14 | 宝山钢铁股份有限公司 | Magnesium-carbon gunning mix |
| CN102807381A (en) * | 2012-08-22 | 2012-12-05 | 武汉钢铁(集团)公司 | Self-flow type large-area batching mix for revolving furnace and methods for preparing and using self-flow type large-area mix |
-
2013
- 2013-04-25 CN CN201310148538.2A patent/CN103204689B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113101A (en) * | 2007-06-30 | 2008-01-30 | 河南省新密市荣耀炉料有限公司 | Magnesium gunning refractory for copper smelting-furnace |
| CN101537487A (en) * | 2008-03-21 | 2009-09-23 | 宝钢集团上海梅山有限公司 | Ladle liner restoring material |
| CN101863671A (en) * | 2010-05-07 | 2010-10-20 | 武汉钢铁(集团)公司 | Slag adhesion resistant gunning refractory for converter |
| CN102372487A (en) * | 2010-08-25 | 2012-03-14 | 宝山钢铁股份有限公司 | Magnesium-carbon gunning mix |
| CN102807381A (en) * | 2012-08-22 | 2012-12-05 | 武汉钢铁(集团)公司 | Self-flow type large-area batching mix for revolving furnace and methods for preparing and using self-flow type large-area mix |
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