CN106242600A - A kind of tapping hole filler and fill method thereof - Google Patents
A kind of tapping hole filler and fill method thereof Download PDFInfo
- Publication number
- CN106242600A CN106242600A CN201610644541.7A CN201610644541A CN106242600A CN 106242600 A CN106242600 A CN 106242600A CN 201610644541 A CN201610644541 A CN 201610644541A CN 106242600 A CN106242600 A CN 106242600A
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- CN
- China
- Prior art keywords
- tapping hole
- hole filler
- carburant
- sintering aid
- magnesite
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- 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.)
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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
- C04B35/03—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
- C04B35/043—Refractories from grain sized mixtures
- C04B35/047—Refractories from grain sized mixtures containing chromium oxide or chrome ore
-
- 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
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention discloses a kind of tapping hole filler, its primary raw material is quartz sand, magnesite clinker and waste and old magnesite-chrome brick, adjuvant is carburant and sintering aid, described raw material includes by mass percentage: quartz sand 25～45%, magnesite clinker 30～60%, waste and old magnesite-chrome brick 10～35%, carburant 0～2%, sintering aid 0～11%.The fill method of this tapping hole filler is: choose the tapping hole filler of more than one different ratio, fills by the content slice gradient from low to high of carburant and sintering aid, and the content of bottom carburant and sintering aid is minimum.The present invention is filled by the compounding of primary raw material and adjuvant and laminated gradient and improves the mobility of filler, agglutinating property and casting rate, overcomes the limitation such as existing tapping hole filler poor fluidity, self-opening rate are low, meets the technological requirement of converter tapping, and low cost.
Description
Technical field
The present invention relates to a kind of tapping hole filler and fill method thereof, belong to industrial kiln fire resisting material field.
Background technology
Tap holes of electric furnace filler is one of crucial kind of electric furnace refractory material, and its self-opening rate is to guaranteeing normally to smelt week
Phase is most important.On the one hand, it must possess suitable sintering character, in order to forms sinter layer so that it is both prevented high-temperature molten steel
To tapping hole bottom seepage, prevent again filler from floating and cause the accident；On the other hand, it is desirable to the sinter layer thickness that it is formed is moderate,
So that when tapping hole under shield is opened, filler falls under self-gravity action, and sinter layer is at ferrostatic pressure and sucks cold
Fragmentation under the effect of thermal stress, broken shell after air, form gravity flow.But, there is mobility in tapping hole filler the most on the market
The problems such as poor and self-opening rate is low, produce impact to smelting molten steel.
Summary of the invention
The technical problem to be solved is the deficiency existed for above-mentioned prior art and provides a kind of tapping hole
Filler and fill method thereof, overcome the limitation such as existing tapping hole filler poor fluidity, self-opening rate be low, meet converter tapping
Technological requirement, and low cost.
The present invention solves that the technical scheme that problem set forth above is used is:
A kind of tapping hole filler, its primary raw material is quartz sand, magnesite clinker and waste and old magnesite-chrome brick, adjuvant be carburant and
Sintering aid.
By such scheme, the raw material of described tapping hole filler includes by mass percentage: quartz sand 25～45%, sintering
Magnesia 30～60%, waste and old magnesite-chrome brick 10～35%, carburant 0～2%, sintering aid 0～11%.Preferably, described raw material is pressed
Mass percent includes: quartz sand 25～45%, magnesite clinker 30～60%, waste and old magnesite-chrome brick 10～35%, carburant 0.5
～2%, sintering aid 2～11%.
By such scheme, one or more in graphite powder, coke powder or asphalt powder of described carburant by arbitrarily than
The mixture of example.
By such scheme, described sintering aid is the mixture of boric acid, silicon powder and Iron Ore Powder.Preferably, burning is helped described in
Agent includes by mass percentage: boric acid 0.5～5%, silicon powder 0.5～3%, Iron Ore Powder 60～99%.
By such scheme, the grain size distribution composition of described quartz sand is by mass percentage: 1～3mm 50～70%, 0
～0.5mm 1-5%, 0.5～1mm 25～45%.
By such scheme, the grain size distribution composition of described magnesite clinker is by mass percentage: 1～3mm 55～
75%；0.074～1mm 20～40%；0～0.074mm 5～15%.
By such scheme, as raw material after the process such as described waste and old magnesite-chrome brick, through selection, smashes, screening, after treatment
Grain size distribution composition is by mass percentage: 1～3mm 50～75%, 0～1mm 25～50%.
By such scheme, the granularity of described sintering aid is less than 0.074mm.
By such scheme, the granularity of described carburant is less than 0.074mm.
The preparation method of tapping hole filler of the present invention: weigh each raw material by proportioning, grain size distribution, after mix homogeneously,
I.e. obtain tapping hole filler, then can carry out dress bag or construction usage.Preferably, weigh each raw material by proportioning, grain size distribution, can
After first primary raw material being mixed 15～30min in batch mixer, then in batch mixer add adjuvant, continue mixing 20～
30min laggard luggage bag or construction usage.
The fill method of tapping hole filler of the present invention: be not all with the gross mass content of sintering aid and carburant and examine
Amount, chooses the tapping hole filler of more than one different ratio, by the gross mass content gradient from low to high of carburant and sintering aid
Corresponding layering is filled (the tapping hole filler that proportioning is different is N shell, and filling the number of plies also be N shell), the carburant of each layer filler with help
Burning agent gross mass content range is all 0～13%, and the gross mass content of carburant and sintering aid successively increases from bottom-up.Its
In, the carburant of at least one tapping hole filler and the content of sintering aid are all not zero.
Preferably, when the tapping hole filler that proportioning is different is two-layer, it is overall that the tapping hole packing volume of bottom accounts for filling
Long-pending 1/2～1/5, the tapping hole packing volume on upper strata accounts for fills the 1/2～4/5 of cumulative volume.
Preferably, when the tapping hole filler that proportioning is different is three layers, it is overall that the tapping hole packing volume of bottom accounts for filling
Long-pending 1/3～1/9, intermediate layer tapping hole packing volume accounts for the tapping hole packing volume on 1/3～1/6 upper strata filling cumulative volume and accounts for
Fill the 2/3～1/6 of cumulative volume.
Compared with prior art, the invention has the beneficial effects as follows:
(1) present invention filled by the compounding of primary raw material and adjuvant and laminated gradient improve filler mobility,
Agglutinating property and casting rate, overcome the limitation such as existing tapping hole filler poor fluidity, self-opening rate be low, meet the work of converter tapping
Skill requirement, and low cost.
(2) the tapping hole filler of the present invention divides multilamellar step to fill, and upper strata filler than the carburant in lower floor filler and
The gross mass content of sintering aid is high, and tapping hole filler contact high-temperature molten steel in upper strata sinters rapidly, forms porous sintered layer, and lower floor
Sintering is slow, is in bulk, easily opens and water under molten steel pressure.
(3) quartz sand in primary raw material of the present invention, magnesia and waste and old magnesite-chrome brick have high refractoriness, and resistance to molten steel corrodes
Property, and in sintering aid Iron Ore Powder, iron compound easily reacts rapidly with agglutinant, volumetric expansion, forms thin porous sintered layer,
Easily open under molten steel pressure and water；Carburant is conducive to improving the slip between filler particles and heat conductivity simultaneously.
Detailed description of the invention
In order to be more fully understood that the present invention, it is further elucidated with present disclosure below in conjunction with embodiment, but the present invention is not
It is limited only to the following examples.
Embodiment 1
Tapping hole filler and fill method thereof, specific as follows:
Ground floor tapping hole filler: include by mass percentage: quartz sand 40%, magnesite clinker 35%, waste and old magnesium chromium
Brick 25%, carburant 0%, sintering aid 0%；
The grain size distribution of each raw material is by mass percentage: quartz sand 1～3mm 65%, 0～0.5mm 2%, 0.5～
1mm 33%；Magnesite clinker 1～3mm 70%, 0.074～1mm 26%, 0～0.074mm 4%；Waste and old magnesite-chrome brick 1～3mm
60%, 0～1mm 40%；
Second layer tapping hole filler: include by mass percentage: quartz sand 38%, magnesite clinker 37%, waste and old magnesium chromium
Brick 23.35%, carburant graphite powder 0.5%, sintering aid 1.15%；Described sintering aid includes according to the mass fraction: boric acid 0.08
Part, silicon powder 0.07 part, Iron Ore Powder 1 part.
The grain size distribution of each raw material is by mass percentage: quartz sand 1～3mm 60%, 0～0.5mm 5%, 0.5～
1mm 35%；Magnesite clinker 1～3mm 55%, 0.074～1mm 40%, 0～0.074mm 5%；The most waste and old magnesium chromium
Brick 1～3mm 70%, 0～1mm 30%；Sintering aid and carburant granularity are respectively less than 0.074mm；
Third layer tapping hole filler: include by mass percentage: quartz sand 35%, magnesite clinker 35%, waste and old magnesium chromium
Brick 22.2%, carburant graphite powder 0.8%, sintering aid 2%；Described sintering aid includes by mass percentage: boric acid 0.1 part,
Silicon powder 0.08 part, Iron Ore Powder 1.82 parts.
The grain size distribution of each raw material is by mass percentage: quartz sand 1～3mm 53%, 0～0.5mm 2%, 0.5～
1mm 45%；Magnesite clinker 1～3mm 58%, 0.074～1mm 35%, 0～0.074mm 7%；Waste and old magnesite-chrome brick 1～3mm
61%, 0～1mm 39%；Sintering aid and carburant granularity are respectively less than 0.074mm；
During filling, from the bottom up, ground floor tapping hole filler, second layer tapping hole filler, third layer tapping it are sequentially filled
Mouth filler, its volume difference of the total volume 1/4,1/3,5/12.
Using this tapping hole filler and fill method, when electric furnace steel tapping, temperature is up to 1650 DEG C-1700 DEG C, filler table
Layer sintering rapidly, and bottom sintering is slow, forms thin porous sintered layer, automatic casting under molten steel pressure, casting rate reaches
98%.
Embodiment 2
Tapping hole filler and fill method thereof, specific as follows:
Ground floor tapping hole filler: include by mass percentage: quartz sand 44%, magnesite clinker 45%, waste and old magnesium chromium
Brick 11%, carburant 0.2%, sintering aid 0.8%；Described sintering aid includes according to the mass fraction: boric acid 0.03 part, silicon powder
0.03 part, Iron Ore Powder 0.74 part.
The grain size distribution of each raw material is by mass percentage: quartz sand 1～3mm 70%, 0～0.5mm 2%, 0.5～
1mm 28%；Magnesite clinker 1～3mm 58%, 0.074～1mm 29%, 0～0.074mm 13%；Waste and old magnesite-chrome brick 1～3mm
72%, 0～1mm 28%；Sintering aid and carburant granularity are respectively less than 0.074mm；
Second layer tapping hole filler: include by mass percentage: quartz sand 28%, magnesite clinker 58%, waste and old magnesium chromium
Brick 10.8%, carburant graphite powder 0.9%, sintering aid 2.3%；Described sintering aid includes by mass percentage: boric acid 0.11,
Silicon powder 0.08%: Iron Ore Powder 2.11%.
The grain size distribution of each raw material is by mass percentage: quartz sand 1～3mm 65%, 0～0.5mm 3%, 0.5～
1mm 32%；Magnesite clinker 1～3mm 61%, 0.074～1mm 29%, 0～0.074mm 10%；Waste and old magnesite-chrome brick 1～3mm
72%, 0～1mm 28%, sintering aid and carburant granularity are respectively less than 0.074mm；
During filling, from the bottom up, being sequentially filled ground floor tapping hole filler, second layer tapping hole filler, its volume is respectively
Account for cumulative volume: ground floor volume: 2/5, second layer volume: 3/5.
Using this tapping hole filler and fill method, when electric furnace steel tapping, temperature is up to 1650 DEG C-1700 DEG C, filler table
Layer sintering rapidly, and bottom sintering is slow, automatic casting under molten steel pressure, casting rate reaches 96%.
The above is only the preferred embodiment of the present invention, it is noted that come for those of ordinary skill in the art
Saying, without departing from the concept of the premise of the invention, it is also possible to make some modifications and variations, these broadly fall into the present invention's
Protection domain.
Claims (10)
1. a tapping hole filler, it is characterised in that its primary raw material is quartz sand, magnesite clinker and waste and old magnesite-chrome brick, auxiliary
Material is carburant and sintering aid.
A kind of tapping hole filler the most according to claim 1, it is characterised in that described raw material wraps by mass percentage
Include: quartz sand 25～45%, magnesite clinker 30～60%, waste and old magnesite-chrome brick 10～35%, carburant 0～2%, sintering aid 0～
11%.
A kind of tapping hole filler the most according to claim 1, it is characterised in that described tapping hole filler is by mass percentage
Meter includes: quartz sand 25～45%, magnesite clinker 30～60%, waste and old magnesite-chrome brick 10～35%, and carburant 0.5～2% helps burning
Agent 2～11%.
A kind of tapping hole filler the most according to claim 1, it is characterised in that described carburant is selected from graphite powder, Jiao
One or more in powder or asphalt powder mixture in any proportion；Described sintering aid is boric acid, silicon powder and Iron Ore Powder
Mixture.
A kind of tapping hole filler the most according to claim 1, it is characterised in that described sintering aid is wrapped according to the mass fraction
Include: boric acid 0.05～0.5 part, silicon powder 0.05～0.3 part, Iron Ore Powder 2～10 parts.
A kind of tapping hole filler the most according to claim 1, it is characterised in that the grain size distribution composition of described quartz sand is pressed
Mass percent is calculated as: 1～3mm 50～70%, 0～0.5mm 1～5%, 0.5～1mm 25～45%.
A kind of tapping hole filler the most according to claim 1, it is characterised in that the grain size distribution composition of described magnesite clinker
It is by mass percentage: 1～3mm 55～75%；0.074～1mm 20～40%；0～0.074mm 5～15%.
A kind of tapping hole filler the most according to claim 1, it is characterised in that described waste and old magnesite-chrome brick grain size distribution forms
It is by mass percentage: 1～3mm 50～75%, 0～1mm 25～50%.
A kind of tapping hole filler the most according to claim 1, it is characterised in that the granularity of described sintering aid is less than
0.074mm；The granularity of described carburant is less than 0.074mm.
The fill method of tapping hole filler the most according to claim 1, it is characterised in that choose two kinds or above difference
The tapping hole filler of proportioning, is filled by the gross mass content slice gradient from low to high of carburant and sintering aid, the content of bottom
Minimum；Wherein, the carburant of at least one tapping hole filler and the content of sintering aid are all not zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610644541.7A CN106242600B (en) | 2016-08-09 | 2016-08-09 | A kind of tapping hole filler and its fill method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610644541.7A CN106242600B (en) | 2016-08-09 | 2016-08-09 | A kind of tapping hole filler and its fill method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106242600A true CN106242600A (en) | 2016-12-21 |
| CN106242600B CN106242600B (en) | 2019-10-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610644541.7A Active CN106242600B (en) | 2016-08-09 | 2016-08-09 | A kind of tapping hole filler and its fill method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117945A (en) * | 2017-04-17 | 2017-09-01 | 濮阳濮耐高温材料（集团）股份有限公司 | Castable and tundish pushing off the slag part production technology |
| CN111705180A (en) * | 2020-06-30 | 2020-09-25 | 武汉钢铁有限公司 | Steel tapping hole filler and filling method |
| CN112341219A (en) * | 2020-11-06 | 2021-02-09 | 鞍山市和丰耐火材料有限公司 | Environment-friendly converter fettling sand using schreyerite as sintering agent and production method thereof |
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| EP0609868A2 (en) * | 1993-02-03 | 1994-08-10 | Asahi Glass Company Ltd. | Monolithic refractory powder mixture |
| CN1107820A (en) * | 1994-12-01 | 1995-09-06 | 牟跃荣 | Filler for eccentric bottom tapping hole of super-high-power electric furnace |
| CN1994624A (en) * | 2006-12-20 | 2007-07-11 | 西峡县通宇冶金保护材料有限公司 | Novel prescription of CSP diversion agent and preparation method thereof |
| CN103910530A (en) * | 2014-02-19 | 2014-07-09 | 新疆八一钢铁股份有限公司 | Harmless treatment process for waste RH magnesite-chrome brick |
-
2016
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Patent Citations (4)
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|---|---|---|---|---|
| EP0609868A2 (en) * | 1993-02-03 | 1994-08-10 | Asahi Glass Company Ltd. | Monolithic refractory powder mixture |
| CN1107820A (en) * | 1994-12-01 | 1995-09-06 | 牟跃荣 | Filler for eccentric bottom tapping hole of super-high-power electric furnace |
| CN1994624A (en) * | 2006-12-20 | 2007-07-11 | 西峡县通宇冶金保护材料有限公司 | Novel prescription of CSP diversion agent and preparation method thereof |
| CN103910530A (en) * | 2014-02-19 | 2014-07-09 | 新疆八一钢铁股份有限公司 | Harmless treatment process for waste RH magnesite-chrome brick |
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| 俞海明: "《转炉钢水的炉外精炼技术》", 31 August 2011, 冶金工业出版社 * |
| 全跃: "《镁质材料生产与应用》", 29 February 2008, 冶金工业出版社 * |
| 周旺枝等: "用后耐火材料回收利用研究现状与进展", 《武钢技术》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117945A (en) * | 2017-04-17 | 2017-09-01 | 濮阳濮耐高温材料（集团）股份有限公司 | Castable and tundish pushing off the slag part production technology |
| CN111705180A (en) * | 2020-06-30 | 2020-09-25 | 武汉钢铁有限公司 | Steel tapping hole filler and filling method |
| CN112341219A (en) * | 2020-11-06 | 2021-02-09 | 鞍山市和丰耐火材料有限公司 | Environment-friendly converter fettling sand using schreyerite as sintering agent and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106242600B (en) | 2019-10-25 |
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Effective date of registration: 20170712 Address after: 430083, Gate No. 2, Qingshan District, Hubei, Wuhan Applicant after: Wuhan iron and Steel Company Limited Address before: 430083 Wuhan factory in Hubei Province before the door No. 2 Applicant before: WUHAN IRON AND STEEL CORPORATION |
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