CN101244942A - Additive agent for large-scale blast furnace stemming and blast furnace stemming - Google Patents
Additive agent for large-scale blast furnace stemming and blast furnace stemming Download PDFInfo
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- CN101244942A CN101244942A CNA2008100546744A CN200810054674A CN101244942A CN 101244942 A CN101244942 A CN 101244942A CN A2008100546744 A CNA2008100546744 A CN A2008100546744A CN 200810054674 A CN200810054674 A CN 200810054674A CN 101244942 A CN101244942 A CN 101244942A
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Abstract
The invention relates to a large-scale blast furnace stemming used additive and the blast furnace stemming thereof, and the components of the additive (the weight proportion) is: Si3N4: 2 to 15, kyanite: 2 to 8, organic explosion prevention fiber: 0.2 to 1, solid phenolic resin: 5 to 20, and asphalt: 1 to 15; in the components, the diameter of Si3N4 is less than or equal to 0.074mm, the diameter of the kyanite is more than or equal to 0.125mm and less than or equal to 0.45mm, the asphalt is high temperature powder asphalt or high polymerization asphalt, and the softening point is no less than 100 DEG C; the raw materials is mixed in a dry state and stirred evenly to make the additive. The stemming with the additive is the large-scale blast furnace stemming of the invention, and the blast furnace satisfies the requirements of the large-scale blast furnaces in filling effect, sintering, permeability, anti-erosion and adhesion strength.
Description
Technical field
The present invention relates to a kind of large blast furnace stemming additive and blast furnace mud thereof.
Background technology
The blast furnace iron notch stemming is owing to need will can open at any time by the iron mouth when blast furnace casting, and tool plays a very important role in ironmaking, and is therefore higher to the performance requriements of blast furnace mud.1, at first requires to have good working, 2, the resistance to fouling height, 3, filling effect is good, 4, wear resistance is good, 5, coking property is good, 6, the adhesion strength height, 7, good permeability, 8, starting material are pollution-free, 9, be easy to opening.In order to reach above-mentioned effect, in stemming, add additive, the main component of existing additive has fused corundom, coke powder, SiC, clay, sericite, as large blast furnace stemming additive, blast furnace mud add existing stemming with additive after, because filling effect, coking property, ventilation property, resistance to fouling and the adhesion strength of the blast furnace mud iron mouth of making are poor, all do not reach large blast furnace (4000m
3) requirement of safety, stable and quality and output.
Summary of the invention
In order to overcome the above-mentioned deficiency of existing large blast furnace stemming with additive and blast furnace mud thereof, the invention provides a kind of additive, the stemming filling effect, coking property, ventilation property, resistance to fouling and the adhesion strength that add this additive satisfy the requirement of large blast furnace; A kind of filling effect, coking property, ventilation property, blast furnace mud that resistance to fouling is good are provided simultaneously.
The composition of additive is the key factor that influences the additive performance, and this large blast furnace stemming with the composition (weight proportion) of additive is:
Si
3N
4 2-15
Kyanite 2-8
Organic explosion-proof fiber 0.2-1
Solid phenolic resin 5-20
Pitch 1-15
In the mentioned component: Si
3N
4D≤0.074mm, kyanite 0.125mm≤d≤0.45mm, pitch are high temperature powdered asphalt or high polymerization shape pitch, and softening temperature is not less than 100 ℃, and general softening temperature is 120 ℃-145 ℃.
Above-mentioned raw material dry blending, generally in stirrer, stirred 40 minutes-60 minutes the additive that is mixed into.Pack at last, general every bag of 25Kg.
This large blast furnace stemming with the optimal components (weight proportion) of additive is:
Si
3N
48.5 kyanite 5
Organic explosion-proof fiber 0.6 solid phenolic resin 12.5 pitches 8.
This blast furnace bubble mud is characterised in that and contains this blast furnace mud additive of 5%～20%, other composition difference of stemming, and the composition of the stemming of composition is also different, introduces the composition of three kinds of blast furnace muds commonly used below.
Containing this blast furnace mud with the composition (weight proportion) of the blast furnace mud of additive is:
Fused corundom 40～60 silicon carbide 15～20 clays 5～10
Coke powder 5～8 wedding agent 10-19 additive 4-29.5.
Containing this blast furnace mud with the composition of the blast furnace mud of additive also can (weight proportion) be:
Fused corundom 40～60 clays 5～10 coke powders 5～8
Sericite 5～10 wedding agent 10-18 additive 3.4-26.5.
Containing this blast furnace mud with the composition of the blast furnace mud of additive also can (weight proportion) be:
Fused corundom 40～60 silicon carbide 15～20 clays 5～10
Coke powder 5～8 sericites 5～10 wedding agent 10-18
Additive 4.2-31.5.
The add-on of additive is directly connected to the performance of large blast furnace stemming in the large blast furnace stemming, this large blast furnace stemming accounts for 5%～20% of stemming with additive, the difference of additive add-on, to the adhesion strength of stemming, filling effect, permeability and easily opening in various degree influence is all arranged, by adjustment, can produce blast furnace simultaneously at the needed stemming of the different working of a furnaces to the additive add-on.As: the required stemming of different times such as when blast furnace opening initial stage, blast furnace staying, blast furnace normal operation.
The stemming requirement at blast furnace opening initial stage has good working, easy opening, easy-sintering, resistance to slag corrosion height, and additive accounts for 5%-10% in this stemming.Other composition mainly contains fused corundom, silicon carbide, clay, coke powder and wedding agent.
The blast furnace staying stemming requires to have good filling effect, ventilation property, adhesion strength, and additive accounts for 5%-8% in this stemming.Other composition is corundum, clay, coke powder, sericite and wedding agent.
Blast furnace normal operation stemming requires to have good filling effect, operation, adhesion strength, wear resistance, coking property, resistance to fouling and be easy to opening, and additive accounts for 10%-15% in this stemming.Other composition is fused corundom, silicon carbide, clay, coke powder, sericite and wedding agent.
Stemming required to have good filling effect, adhesion strength, wear resistance and good scour resistance when high furnace temperature operated, and additive accounts for 15%-20% in this stemming, and other composition is fused corundom, silicon carbide, clay, coke powder and wedding agent.
Low furnace temperature requires stemming to have good resistance to fouling, scour resistance when operating, and additive accounts for 15%-20% in this stemming, and other composition is fused corundom, silicon carbide, clay, coke powder and wedding agent.
The following describes the advantage and the advantage and the performance that constitute stemming of this additive.
This large blast furnace stemming is taked above-mentioned composition with additive, with fused corundom, silicon carbide, clay, coke powder, sericite etc. dried be mixed even after, add wedding agent and fully grind system, constitute different large blast furnace stemmings, this large blast furnace stemming has following advantage: 1, good working, 2, the corrosion stability height, 3, filling effect is good, 4, wear resistance is good, 5, coking property is good, and 6, the adhesion strength height, 7, good permeability, 8, starting material are pollution-free, and 9, be easy to opening.
Embodiment
Describe this large blast furnace stemming additive embodiment in detail below in conjunction with embodiment, but this large blast furnace stemming is not limited to following embodiment with the embodiment of additive.
Additive embodiment one
Si
3N
415 kyanites 8
Organic fibre 1 resin 20 pitches 15
The granularity of mentioned component is 0.45mm, organic fibre: length 3mm-5mm, diameter 25 μ m-40 μ m, 155 ℃-165 ℃ of fusing points.
Above-mentioned dried raw material is mixed, generally stirred 50 minutes in stirrer, it is even to be mixed, pack, every bag of 25Kg.
Additive embodiment two
Si
3N
42 kyanites 2
Organic fibre 0.2 resin 5 pitches 1
The granularity of mentioned component is 0.45mm, organic fibre: length 3mm-5mm, diameter 25 μ m-40 μ m, 155 ℃-165 ℃ of fusing points.
Above-mentioned dried raw material is mixed, generally stirred 40 minutes in stirrer, it is even to be mixed, pack, every bag of 25Kg.
Additive embodiment three
Si
3N
48.5 kyanite 5
Organic fibre 0.6 resin 12.5 pitches 8
The granularity of mentioned component is 0.45mm, organic fibre: length 3mm-5mm, diameter 25 μ m-40 μ m, 155 ℃-165 ℃ of fusing points.
Above-mentioned dried raw material is mixed, generally stirred 60 minutes in stirrer, it is even to be mixed, pack, every bag of 25Kg.
Additive embodiment four
Si
3N
415 kyanites 8
Organic fibre 0.2 resin 5 pitches 1
The granularity of mentioned component is 0.45mm, organic fibre: length 3mm-5mm, diameter 25 μ m-40 μ m, 155 ℃-165 ℃ of fusing points.
Above-mentioned dried raw material is mixed, generally stirred 40-60 minute in stirrer, it is even to be mixed, pack, every bag of 25Kg.
Additive embodiment five
Si
3N
42 kyanites 2
Organic fibre 1 resin 20 pitches 15
The granularity of mentioned component is 0.45mm, organic fibre: length 3mm-5mm, diameter 25 μ m-40 μ m, 155 ℃-165 ℃ of fusing points.
Above-mentioned dried raw material is mixed, generally stirred 60 minutes in stirrer, it is even to be mixed, pack, every bag of 25Kg.
The advantage of this additive is that the large blast furnace stemming of making embodies, so the advantage of this additive and stemming thereof is described with five following large blast furnace stemming embodiment.
Large blast furnace stemming embodiment one
That the additive in the present embodiment adopts is additive embodiment one, is the stemming of high furnace temperature running phase, and the composition that additive accounts in stemming is 15%, and the composition of this blast furnace mud embodiment (weight proportion) is:
Fused corundom 50 silicon carbide 17.5 clays 7.5 coke powders 6.5
Wedding agent 17.5 additives 17.5
Large blast furnace stemming embodiment two
That the additive in the present embodiment adopts is additive embodiment two, is the blast furnace staying stemming, and the composition that additive accounts in stemming is 5%, and the composition of this blast furnace mud embodiment (weight proportion) is:
Fused corundom 50 clays 7.5 coke powders 6.5
Sericite 7.5 wedding agents 17.5 additives 4.7
Large blast furnace stemming embodiment three
That the additive in the present embodiment adopts is additive embodiment three, is blast furnace normal operation stemming, and the composition that additive accounts in stemming is 10%, and the composition of this blast furnace mud embodiment (weight proportion) is:
Fused corundom 60 silicon carbide 20 clays 10 coke powders 8
Sericite 10 wedding agents 20 additives 14
Large blast furnace stemming embodiment four
That the additive in the present embodiment adopts is additive embodiment five, is blast furnace opening initial stage stemming, and the composition that additive accounts in stemming is 5%, and the composition of this blast furnace mud embodiment (weight proportion) is:
Fused corundom 40 silicon carbide 15 clays 5 coke powders 5
Wedding agent 15 additives 4.2
Large blast furnace stemming embodiment five
That the additive in the present embodiment adopts is additive embodiment four, is the low furnace temperature running of blast furnace phase stemming, and the composition that additive accounts in stemming is 15%,, the composition of this blast furnace mud embodiment (weight proportion) is:
Fused corundom 60 silicon carbide 20 clays 10 coke powders 5
Wedding agent 15 additives 19.4
Wedding agent among above-mentioned five blast furnace mud embodiment is known coal tar wedding agent, also available other blast furnace mud wedding agent.
The main technical details that above-mentioned five additive embodiment join five stemming embodiment that are prepared in the stemming sees Table 1.
Annotate: the big finger of said environmental protection smell has strong sharp aroma in the table 1, and environmental protection smell little finger of toe sharp aroma does not have substantially.
Table 1
| The stemming kind | Beat mud pressure KPa | Time min taps a blast furnace | Opening time min | Stemming loss Kg/t iron | The environmental protection smell |
| Existing stemming 1 | 200～250 | 90～150 | 5～10 | 0.55 | Greatly |
| Stemming example 1 | 80～200 | 100～160 | 2～8 | 0.43 | Little |
| Existing stemming 2 | 150～180 | 100～150 | 10～15 | 0.85 | Greatly |
| Stemming example 2 | 90～120 | 120～160 | 5～10 | 0.64 | Little |
| Existing stemming 3 | 200～250 | 90～150 | 5～10 | 0.45 | Greatly |
| Stemming example 3 | 80～200 | 120～150 | 3～10 | 0.33 | Little |
| Existing stemming 4 | 150～180 | 90～150 | 10～15 | 0.84 | Greatly |
| Stemming example 4 | 90～120 | 120～150 | 5～10 | 0.63 | Little |
| Existing stemming 5 | 200～250 | 80～120 | 5～10 | 0.58 | Greatly |
| Stemming example 5 | 80～200 | 100～160 | 3～10 | 0.43 | Little |
Claims (4)
1, a kind of large blast furnace stemming additive, its composition (weight proportion) is:
Si
3N
4 2-15
Kyanite 2-8
Organic explosion-proof fiber 0.2-1
Solid phenolic resin 5-20
Pitch 1-15
In the mentioned component: Si
3N
4D≤0.074mm, kyanite 0.125mm≤d≤0.45mm, pitch are high temperature powdered asphalt or high polymerization shape pitch, and softening temperature is not less than 100 ℃; Above-mentioned raw material dry blending, the additive that mixes.
2, large blast furnace stemming additive according to claim 1, it is characterized in that: its composition (weight proportion) is:
Si
3N
48.5 kyanite 5
Organic explosion-proof fiber 0.6 solid phenolic resin 12.5 pitches 8.
3, a kind of large blast furnace stemming is characterized in that: contain 5%～20% the said additive of claim 1 in its composition (weight proportion).
4, large blast furnace stemming according to claim 3 is characterized in that: said additive
Composition (weight proportion) is:
Si
3N
48.5 kyanite 5
Organic explosion-proof fiber 0.6 solid phenolic resin 12.5 pitches 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810054674 CN101244942B (en) | 2008-03-20 | 2008-03-20 | Additive agent for large-scale blast furnace stemming and blast furnace stemming |
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|---|---|---|---|
| CN 200810054674 CN101244942B (en) | 2008-03-20 | 2008-03-20 | Additive agent for large-scale blast furnace stemming and blast furnace stemming |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101244942A true CN101244942A (en) | 2008-08-20 |
| CN101244942B CN101244942B (en) | 2010-12-01 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102557691A (en) * | 2012-01-17 | 2012-07-11 | 山国强 | Low-cost blast furnace stemming |
| CN102775155A (en) * | 2011-05-10 | 2012-11-14 | 三和耐火工业股份有限公司 | Plugging clay for iron tapping hole |
| CN103864448A (en) * | 2014-04-01 | 2014-06-18 | 郑州市瑞沃耐火材料有限公司 | Water-free stemming for medium and large blast furnace |
| CN104276829A (en) * | 2013-07-11 | 2015-01-14 | 中冶建筑研究总院有限公司 | Stemming for inhibiting splashing of iron notch |
| CN104276828A (en) * | 2013-07-11 | 2015-01-14 | 中冶建筑研究总院有限公司 | Additive for stemming for inhibiting iron notch splash |
| CN111704472A (en) * | 2020-06-22 | 2020-09-25 | 湖南立达高新材料有限公司 | Additive for anhydrous stemming and preparation method thereof |
-
2008
- 2008-03-20 CN CN 200810054674 patent/CN101244942B/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775155A (en) * | 2011-05-10 | 2012-11-14 | 三和耐火工业股份有限公司 | Plugging clay for iron tapping hole |
| CN102557691A (en) * | 2012-01-17 | 2012-07-11 | 山国强 | Low-cost blast furnace stemming |
| CN104276829A (en) * | 2013-07-11 | 2015-01-14 | 中冶建筑研究总院有限公司 | Stemming for inhibiting splashing of iron notch |
| CN104276828A (en) * | 2013-07-11 | 2015-01-14 | 中冶建筑研究总院有限公司 | Additive for stemming for inhibiting iron notch splash |
| CN104276829B (en) * | 2013-07-11 | 2015-12-02 | 中冶建筑研究总院有限公司 | Suppress the stemming of iron mouth splash |
| CN104276828B (en) * | 2013-07-11 | 2016-01-20 | 中冶建筑研究总院有限公司 | Suppress the stemming additive of iron mouth splash |
| CN103864448A (en) * | 2014-04-01 | 2014-06-18 | 郑州市瑞沃耐火材料有限公司 | Water-free stemming for medium and large blast furnace |
| CN103864448B (en) * | 2014-04-01 | 2015-04-15 | 郑州市瑞沃耐火材料有限公司 | Water-free stemming for medium and large blast furnace |
| CN111704472A (en) * | 2020-06-22 | 2020-09-25 | 湖南立达高新材料有限公司 | Additive for anhydrous stemming and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN101244942B (en) | 2010-12-01 |
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Effective date of registration: 20160613 Address after: Gu Xian Cun Dong Huang Shui Zhen Yangqu County 030100 Shanxi city of Taiyuan Province Patentee after: SHANXI LUWEIBAO TAIGANG REFRACTORIES COMPANY LIMITED Address before: 030003 Taiyuan City, Shanxi province pointed lawn street, No. 2 Patentee before: Taiyuan Iron & Steel (Group) Co., Ltd. |