CN1188752A - Blast furnace stemming - Google Patents

Blast furnace stemming Download PDF

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Publication number
CN1188752A
CN1188752A CN97107349A CN97107349A CN1188752A CN 1188752 A CN1188752 A CN 1188752A CN 97107349 A CN97107349 A CN 97107349A CN 97107349 A CN97107349 A CN 97107349A CN 1188752 A CN1188752 A CN 1188752A
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Prior art keywords
blast furnace
water
stemming
weight
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Pending
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CN97107349A
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Chinese (zh)
Inventor
李真才
刁日升
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Iron And Steel Inst Panzhihua Iron And Steel (group) Co
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Iron And Steel Inst Panzhihua Iron And Steel (group) Co
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Priority to CN97107349A priority Critical patent/CN1188752A/en
Publication of CN1188752A publication Critical patent/CN1188752A/en
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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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63496—Bituminous materials, e.g. tar, pitch
    • 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
    • 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
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • 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
    • C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
    • 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
    • C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
    • C04B2235/3234—Titanates, not containing zirconia

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

A refractory mortar for blast furnace contains such components (Wt.%) as titanium ore concentrate (5-10), high-Al titanium-containing substance (20-35), silicon carbide (5-10), clay (25-33), coke powder (18-20), asphalt (8-12) and composite binder formed from tar or anthracent oil and water, and features high resistance to slags, molten iron and flushing, better adhesion, air permeability, opening toughness and high-temp. performance, and higher stability.

Description

Blast furnace mud
The invention belongs to technical field of refractory materials, particularly relate to a kind of blast furnace mud.
The stemming that present blast furnace stifled iron notch is used can be divided into hydrous taphole loam and anhydrous stemming two classes.Hydrous taphole loam is to make wedding agent with water, and its plasticity-is good, but intensity is lower, and the ability that anti-slag, iron liquid corrode and washes away is relatively poor.The stove ore grade is low for going into, the blast furnace that the quantity of slag is big, during with the hydrous taphole loam stifled iron notch, because slag, iron liquid are to the aggravation of washing away of iron mouth, iron mouth passage is widened or is drawn bad easily in the process of tapping a blast furnace, and causes iron mouth job insecurity, and slag flowing molten iron stock is loose, splash is serious, and the phenomenon that iron mouth tide and iron mouth early blow happens occasionally.The slag iron that this both had been unfavorable in the clear height stove causes iron loss to increase again, has also strengthened the stokehold working strength of workers.Anhydrous stemming is made wedding agent with tar, carbolineum or resol, and its intensity is fine, but plasticity-is relatively poor.During the anhydrous stemming for blast furnace stifled iron notch, necessary adapted drill combined type or just contrary formula iron perforater tapping outlet are if adopt common iron perforater tapping outlet then very difficult.
Chinese patent application 91107236 discloses a kind of stemming of filling blast furnace taphole.This stemming serves as main batching with chamotte, coke powder, and employing tar is wedding agent.In actual the use, tar is subjected to thermal softening during stifled iron notch, can make the stemming strength degradation, and the pressure big gun time during stifled iron notch reaches 20～30 minutes, brings very big difficulty to flushing and casting.Very hard after the stemming coking, can't bore tapping outlet with common taphole drilling machine, therefore, need to consume a large amount of oxygen lances and oxygen burning tapping outlet.
The objective of the invention is at problems of the prior art, propose a kind of blast furnace mud.The strength property of this stemming can satisfy the opening condition of existing common tapping outlet equipment between hydrous taphole loam and anhydrous stemming, the ability that has good anti-slag, the erosion of iron liquid again and wash away.
The present invention is achieved through the following technical solutions its purpose:
Blast furnace mud, its batching comprise ilmenite concentrate, high alumina titaniferous thing, silicon carbide, clay etc.It mainly forms (weight %): ilmenite concentrate 5～10%, high alumina titaniferous thing 20～35%, silicon carbide 5～10%, clay 25～35%, coke powder 18～20%, pitch 8～12%.
Be further, in the above-mentioned blast furnace mud, add the combined binder that tar and water are formed, its add-on (weight %) is: tar 2～8%, water 10～14%.
Be further, in the above-mentioned blast furnace mud, add the combined binder that carbolineum and water are formed, its add-on (weight %) is: carbolineum 3～10%, water 8～14%.
Be that in the above-mentioned blast furnace mud, the main chemical compositions of ilmenite concentrate (weight %) is: 0.5～0.7%Al further 2O 3, 3.0～4.0%SiO 2, 4.5～5.8%MgO, 1.0～1.5%CaO, 47.0～47.5%TiO 2, 7.5～8.6%Fe 2O 3
Be that in the above-mentioned blast furnace mud, the main chemical compositions (weight %) of high alumina titaniferous thing is: 83.4～86.3%Al further 2O 3, 3.8～4.4%SiO 2, 1.2～2.0%MgO, 0.1～0.2%Fe 2O 3, 0.5～0.6%CaO, 8.0～9.0%TiO 2
Al 2O 3In stemming, play the aggregate effect, and can at high temperature generate magnesium-aluminium spinel (MgOAl with MgO 2O 3), its fusing point is greater than 1900 ℃; With SiO 2Generate mullite (3Al 2O 32SiO 2), its fusing point is greater than 1800 ℃.The a large amount of magnesium-aluminium spinels and the generation of mullite help improving the high-temperature behavior of stemming.
TiO 2In stemming, under reducing atmosphere and hot conditions, generate Ti (C, N) with carbon element, its fusing point up to 2950 ℃～3140 ℃, can improve the ability that the intensity of stemming and anti-slag, iron liquid corrode and washes away, can protect mud drum effectively simultaneously.
SiC has fusing point height, hardness height, good heat conductivity, also can use characteristics such as 1600 ℃ in oxidizing atmosphere.In stemming, allocate SiC into, can improve the anti-slag of stemming, the erosion of iron liquid and performance of flushing.
Carburizing reagent takes place in pitch in temperature-rise period, and organizes internal diffusion towards periphery in the process of carbonization, fills little pore, can improve the intensity and the spalling resistance of stemming.
Combined binder so that tar and water are formed can make stemming have cohesiveness, ventilation property and opening performance preferably.
Combined binder so that carbolineum and water are formed can make stemming have cohesiveness, ventilation property and opening performance preferably; Can improve the hot strength of stemming.
The ability that this stemming has good anti-slag, the erosion of iron liquid and washes away, cohesiveness, ventilation property, opening performance and high-temperature behavior preferably; Can make the iron mouth keep satisfactory stability, help protecting mud drum, reduce and beat mud amount 1/3 with first-class advantage.
Embodiment 1
Get 5 groups of stemming batchings (seeing Table 1).Earlier the coke grain is added pug mill grind up shape, the step of pressing SiC → pitch → clay → water → ilmenite concentrate → high alumina titaniferous thing → tar → clay → high alumina titaniferous thing → water then is with former
Table 1
Numbering SiC ??％ High alumina titaniferous thing % Clay % Coke powder % Pitch % Ilmenite concentrate % Add water % Add tar %
??1 ????10.0 ??20.0 ??34.0 ??19.0 ??12.0 ????5.0 ??14.0 ???2.0
??2 ????5.0 ??25.0 ??30.0 ??18.0 ??12.0 ????10.0 ??11.0 ???5.0
??3 ????7.0 ??20.0 ??35.0 ??20.0 ??8.0 ????10.0 ??12.0 ???5.0
??4 ????10.0 ??20.0 ??30.0 ??20.0 ??10.0 ????10.0 ??13.0 ???5.0
??5 ????7.0 ??35.0 ??25.0 ??20.0 ??8.0 ????5.0 ??10.0 ???8.0
Material adds the interior system of grinding of pug mill and forms.The present invention's 5 assembly sides test is listed in table 2 with the relevant index contrast with prior art of assay situation.
Table 2
Numbering Al 2O 3??％ The solid % of C TiO 2??％ Hot compressive strength MPa The withstand voltage MPa in back is burnt in reduction Plasticity- Volume density g/cm 3 Void content % Scouring rate %
?1 ?24.3 ?15.6 ?4.2 ??- ????6.8 ??7.4 ?2.12 ?35.3 ?18.0
?2 ?27.4 ?14.8 ?7.5 ??- ????7.1 ??7.1 ?2.04 ?35.6 ?20.0
?3 ?29.0 ?16.4 ?7.0 ??- ????6.3 ??7.0 ?2.06 ?36.2 ?20.2
?4 ?23.8 ?16.4 ?6.3 ??- ????11.3 ??7.9 ?2.04 ?36.4 ?18.0
?5 ?34.3 ?16.4 ?4.6 ??- ????7.7 ??6.5 ?2.04 ?35.7 ?15.0
* prior art ?27.5 ?～ ?37.5 ?18.6 ?～ ?33.9 ?4.1 ??～ ?5.6 ??6.9 ???～ ??10.9 ????- ??5.7 ??- ???- ??-
* Chinese patent application № 91107236.
Annotate: hot withstand voltage condition is: 1100 ℃ * 60 °, the reducing roasting condition is: 1200 ℃ * 3h.
Embodiment 2
Get 5 groups of stemming batchings (seeing Table 3).Earlier the coke grain is added pug mill grind up shape, press SiC → drop then
Table 3
Numbering SiC ??％ High alumina titaniferous thing % Clay % Coke powder % Pitch % Ilmenite concentrate % Add water % Add carbolineum %
??1 ????5.0 ??30.0 ??25.0 ??18.0 ??12.0 ??10.0 ???13.0 ???4.0
??2 ????7.0 ??35.0 ??25.0 ??18.0 ??10.0 ??5.0 ???12.0 ???5.0
??3 ????8.0 ??28.0 ??28.0 ??19.0 ??8.0 ??9.0 ???14.0 ???3.5
??4 ????5.0 ??30.0 ??27.0 ??18.0 ??10.0 ??10.0 ???8.0 ???10.0
??5 ???10.0 ??22.0 ??35.0 ??20.0 ??8.0 ??5.0 ???10.0 ???8.0
The step of green grass or young crops → clay → water → ilmenite concentrate → high alumina titaniferous thing → fear oil → clay → high alumina titaniferous thing → water adds raw material that the system of grinding forms in the pug mill.The present invention's 5 assembly sides test is listed in table 4 with the relevant index contrast with prior art of assay situation.
Table 4
Numbering ?Al 2O 3????％ The solid % of C ?TiO 2??％ Hot compressive strength MPa The withstand voltage MPa in back is burnt in reduction Plasticity- Volume density g/cm 3 Void content % Scouring rate %
??1 ???31.3 ?14.8 ??6.8 ??- ????6.4 ??7.5 ??2.10 ??36.4 ??20.2
??2 ???35.8 ?14.8 ??4.5 ??- ????6.7 ??7.8 ??2.14 ??36.2 ??15.0
??3 ???31.2 ?15.6 ??5.6 ??- ????7.3 ??7.6 ??2.07 ??35.1 ??20.8
?4 ???31.8 ?14.8 ??6.2 ??- ????7.8 ??6.5 ??2.08 ??34.5 ??20.0
?5 ???30.1 ?16.4 ??3.9 ??- ????10.7 ??6.0 ??2.04 ??33.7 ??21.5
* prior art ???27.5 ????～ ???37.5 ?18.6 ??～ ?33.9 ??4.1 ???～ ??5.6 ??6.9 ??～ ??10.9 ????- ??5.7 ???- ???- ???- ??-
* Chinese patent application № 91107236.
Annotate: hot withstand voltage condition is: 1100 ℃ * 60 °, the reducing roasting condition is: 1200 ℃ * 3h.

Claims (5)

1 blast furnace mud, its batching comprises ilmenite concentrate, high alumina titaniferous thing, silicon carbide, clay etc.: the present invention is characterized in that the main composition (weight %) of preparing burden is: ilmenite concentrate 5～10%, high alumina titaniferous thing 20～35%, silicon carbide 5～10%, clay 25～35%, coke powder 18～20%, pitch 8～12%.
2 blast furnace muds as claimed in claim 1 is characterized in that, add tar and water and form combined binder, and its add-on (weight %) is: tar 2～8%, water 10～14%.
3 blast furnace muds as claimed in claim 1 is characterized in that, add carbolineum and water and form combined binder, and its add-on (weight %) is: fear oil 3～10%, water 8～14%.
4 blast furnace muds as claimed in claim 1 is characterized in that, the main chemical compositions of ilmenite concentrate (weight %) is: 0.5～0.7%Al 2O 3, 3.0～4.0%SiO 2, 4.5～5.8%MgO, 1.0～1.5%CaO, 47.0～47.5%TiO 2, 7.5～8.6%Fe 2O 3
5 blast furnace muds as claimed in claim 1 is characterized in that, the main component (weight %) of high alumina titaniferous thing is: 83.4～86.3%Al 2O 3, 3.8～4.4%SiO 2, 1.2～2.0%MgO, 0.1～0.2%Fe 2O 3, 0.5～0.6%CaO, 8.0～9.0%TiO 2
CN97107349A 1997-01-23 1997-01-23 Blast furnace stemming Pending CN1188752A (en)

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Application Number Priority Date Filing Date Title
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1064650C (en) * 1998-04-23 2001-04-18 安阳钢铁股份有限公司 High-strength water-containing stemming for taphole of blast furnace and its preparation
CN101921127A (en) * 2010-08-30 2010-12-22 武汉钢铁(集团)公司 Manufacturing method of long-life high-temperature resistant radiation pipe
CN101921129A (en) * 2010-09-08 2010-12-22 武汉钢铁(集团)公司 Paint applied to pelletizing rotary kiln for preventing dust bonding
CN102030543A (en) * 2010-09-03 2011-04-27 吴江市液铸液压件铸造有限公司 Repair coating for foundry furnace lining surface
CN102030542A (en) * 2010-09-02 2011-04-27 吴江市液铸液压件铸造有限公司 Coating for repairing rear furnace of casting furnace
CN102060548A (en) * 2009-11-16 2011-05-18 中冶建筑研究总院有限公司 Stemming utilizing waste refractory material and preparation method thereof
CN102234199A (en) * 2011-04-18 2011-11-09 西峡县新锦耐化有限责任公司 High-titanium furnace protection stemming
CN102320852A (en) * 2011-09-07 2012-01-18 鞍钢实业铁缘耐火材料有限责任公司 Furnace-protecting anhydrous stemming
CN102503493A (en) * 2011-11-10 2012-06-20 山国强 Low-cost environmental-protection furnace stemming
CN104446556A (en) * 2014-12-03 2015-03-25 武汉钢铁(集团)公司 Blast-furnace taphole stemming prepared from ferrotitanium slag and preparation method of blast-furnace taphole
TWI550091B (en) * 2014-06-18 2016-09-21 中國鋼鐵股份有限公司 Composition of blast furance mud
CN106986657A (en) * 2017-06-08 2017-07-28 攀枝花学院 Anhydrous stemming and preparation method thereof

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1064650C (en) * 1998-04-23 2001-04-18 安阳钢铁股份有限公司 High-strength water-containing stemming for taphole of blast furnace and its preparation
CN102060548A (en) * 2009-11-16 2011-05-18 中冶建筑研究总院有限公司 Stemming utilizing waste refractory material and preparation method thereof
CN102060548B (en) * 2009-11-16 2013-02-20 中冶建筑研究总院有限公司 Stemming utilizing waste refractory material and preparation method thereof
CN101921127A (en) * 2010-08-30 2010-12-22 武汉钢铁(集团)公司 Manufacturing method of long-life high-temperature resistant radiation pipe
CN101921127B (en) * 2010-08-30 2012-11-21 武汉钢铁(集团)公司 Manufacturing method of long-life high-temperature resistant radiation pipe
CN102030542A (en) * 2010-09-02 2011-04-27 吴江市液铸液压件铸造有限公司 Coating for repairing rear furnace of casting furnace
CN102030542B (en) * 2010-09-02 2013-03-06 吴江市液铸液压件铸造有限公司 Coating for repairing rear furnace of casting furnace
CN102030543A (en) * 2010-09-03 2011-04-27 吴江市液铸液压件铸造有限公司 Repair coating for foundry furnace lining surface
CN102030543B (en) * 2010-09-03 2013-03-06 吴江市液铸液压件铸造有限公司 Repair coating for foundry furnace lining surface
CN101921129B (en) * 2010-09-08 2012-11-14 武汉钢铁(集团)公司 Paint applied to pelletizing rotary kiln for preventing dust bonding
CN101921129A (en) * 2010-09-08 2010-12-22 武汉钢铁(集团)公司 Paint applied to pelletizing rotary kiln for preventing dust bonding
CN102234199A (en) * 2011-04-18 2011-11-09 西峡县新锦耐化有限责任公司 High-titanium furnace protection stemming
CN102234199B (en) * 2011-04-18 2013-01-23 西峡县新锦耐化有限责任公司 High-titanium furnace protection stemming
CN102320852A (en) * 2011-09-07 2012-01-18 鞍钢实业铁缘耐火材料有限责任公司 Furnace-protecting anhydrous stemming
CN102503493A (en) * 2011-11-10 2012-06-20 山国强 Low-cost environmental-protection furnace stemming
TWI550091B (en) * 2014-06-18 2016-09-21 中國鋼鐵股份有限公司 Composition of blast furance mud
CN104446556A (en) * 2014-12-03 2015-03-25 武汉钢铁(集团)公司 Blast-furnace taphole stemming prepared from ferrotitanium slag and preparation method of blast-furnace taphole
CN106986657A (en) * 2017-06-08 2017-07-28 攀枝花学院 Anhydrous stemming and preparation method thereof

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