CN107903040A - A kind of magnesium chromium matter ramming mass and production method for liquid steel refining stove furnace bottom - Google Patents

A kind of magnesium chromium matter ramming mass and production method for liquid steel refining stove furnace bottom Download PDF

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Publication number
CN107903040A
CN107903040A CN201711170416.8A CN201711170416A CN107903040A CN 107903040 A CN107903040 A CN 107903040A CN 201711170416 A CN201711170416 A CN 201711170416A CN 107903040 A CN107903040 A CN 107903040A
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magnesia
parts
chrome
weight
ramming mass
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CN201711170416.8A
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Inventor
王健骁
王新杰
张义先
尹斌
金钊
袁青峰
高振升
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HAICHENG ZHONGXING MAGNESIA SYNTHETIC MATERIALS CO Ltd
Haicheng Lear Meg Materials Co Ltd Sita
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HAICHENG ZHONGXING MAGNESIA SYNTHETIC MATERIALS CO Ltd
Haicheng Lear Meg Materials Co Ltd Sita
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Priority to CN201711170416.8A priority Critical patent/CN107903040A/en
Publication of CN107903040A publication Critical patent/CN107903040A/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
    • C04B35/01—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
    • 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
    • C04B35/12—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 chromium oxide
    • 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
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
    • 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
    • C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • 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
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    • 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
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
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    • 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
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
    • 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
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance

Abstract

The present invention relates to a kind of magnesium chromium matter ramming mass and production method for liquid steel refining stove furnace bottom, include the raw material of following parts by weight：27 30 parts of the magnesia-chrome sand of 0 ＜ particle diameters≤1mm；24 26 parts of the magnesia-chrome sand of 1mm ＜ particle diameters≤3mm；25 27 parts of the magnesia-chrome sand of 3mm ＜ particle diameters≤6mm；14 17 parts of 325 mesh of magnesia-chrome sand；5 11 parts of bonding agent.It is an advantage of the invention that：Magnesia-chrome sand and bonding agent using periclase and magnesia chrome spinel as principal crystalline phase are raw material, and manufactured ramming mass has the advantages of erosion resisting is good, and service life is long.

Description

A kind of magnesium chromium matter ramming mass and production method for liquid steel refining stove furnace bottom
Technical field
The invention belongs to furnace bottom of fining furnace technical field of refractory materials, more particularly to one kind to be used for liquid steel refining stove furnace bottom Magnesium chromium matter ramming mass and production method.
Background technology
Magnesian-chrome efractoy is a kind of magnesia refractories containing chrome green, and chromium oxide by being fused to periclase admittedly With the magnesia chrome spinel for forming low bulk, in recent years, the high temperature kiln such as non-ferrous smelting furnace, liquid steel refining stove, cement rotary kiln is all Generally use magnesian-chrome efractoy.Magnesium chromia material has good refractoriness under load, elevated temperature strength, corrosion resistance, heat Stability, relatively low thermal conductivity and preferable extension kliner coating, preferable using effect are shaken, is prolonged the service life.Because of ramming mass master Be used for the direct contact site of fusant, therefore require grain, powder-material to have high volume stability, compactness and resistance to invade Corrosion.
The content of the invention
For overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of magnesium chromium matter for liquid steel refining stove furnace bottom Ramming mass and production method, have the advantages of erosion resisting is good, and service life is long.
To achieve the above object, the present invention is achieved through the following technical solutions：
A kind of magnesium chromium matter ramming mass for liquid steel refining stove furnace bottom, includes the raw material of following parts by weight：
27-30 parts of the magnesia-chrome sand of 0 ＜ particle diameters≤1mm；24-26 parts of the magnesia-chrome sand of 1mm ＜ particle diameters≤3mm；3mm ＜ particle diameters≤ 25-27 parts of the magnesia-chrome sand of 6mm；14-17 parts of 325 mesh of magnesia-chrome sand；5-11 parts of bonding agent.
The bonding agent is boric acid powder, resin-oatmeal, liquid resinous mixture.
Weight percent content >=94.0% of MgO in the magnesite clinker, Si in magnesia-chrome sand2O3Percentage by weight contain Amount >=40.0%.
A kind of production method of magnesium chromium matter ramming mass for liquid steel refining stove furnace bottom, comprises the following steps：
1) by the broken screening fine grinding of abandoned magnesia-chrome powder, and raw material is weighed by the parts by weight；
2) magnesia-chrome sand of 0 ＜ particle diameters≤1mm, 1mm ＜ particle diameter≤3mm, 3mm ＜ particle diameter≤6mm and boric acid powder are mixed in advance It is even；
3) it is kneaded：Resin-oatmeal and liquid resin are poured slowly into planetary sand mixer, add the magnesia-chrome sand mixing of 325 mesh 10-15min, then discharges；
5) physical and chemical index of gained ramming mass is after discharging：Percentage by weight >=31.5% of MgO；Fe2O3Weight percent Than≤8.2；SiO2Percentage by weight≤2.6；Al2O3Percentage by weight≤10.8；Igloss amount >=3.9；In 1500 DEG C × 3h Under the conditions of compressive resistance >=51MPa；Compressive resistance >=15MPa under the conditions of 1100 DEG C × 3h.
Compared with prior art, the beneficial effects of the invention are as follows：
The production method of liquid steel refining stove furnace bottom magnesium chromium matter ramming mass, the magnesium using periclase and magnesia chrome spinel as principal crystalline phase Chromium sand and bonding agent are raw material, and manufactured ramming mass has the advantages of erosion resisting is good, and service life is long.Meanwhile and utilize useless Magnesite-chrome brick is primary raw material, makes full use of secondary resource, and production cost can be further reduced while requirement is met, section About natural resources.
Embodiment
The present invention is described in detail below, it should be noted that the implementation of the present invention is not limited to following embodiment party Formula.
A kind of magnesium chromium matter ramming mass for liquid steel refining stove furnace bottom, includes the raw material of following parts by weight：
27-30 parts of the magnesia-chrome sand of 0 ＜ particle diameters≤1mm；24-26 parts of the magnesia-chrome sand of 1mm ＜ particle diameters≤3mm；3mm ＜ particle diameters≤ 25-27 parts of the magnesia-chrome sand of 6mm；14-17 parts of 325 mesh of magnesia-chrome sand；5-11 parts of bonding agent.
Wherein, bonding agent is boric acid powder, resin-oatmeal, liquid resinous mixture.The percentage by weight of MgO in magnesite clinker Content >=94.0%, Si in magnesia-chrome sand2O3Weight percent content >=40.0%.
A kind of production method of magnesium chromium matter ramming mass for liquid steel refining stove furnace bottom, comprises the following steps：
1) by the broken screening fine grinding of abandoned magnesia-chrome powder, and raw material is weighed by the parts by weight；
2) magnesia-chrome sand of 0 ＜ particle diameters≤1mm, 1mm ＜ particle diameter≤3mm, 3mm ＜ particle diameter≤6mm and boric acid powder are mixed in advance It is even；
3) it is kneaded：Resin-oatmeal and liquid resin are poured slowly into planetary sand mixer, add the magnesia-chrome sand mixing of 325 mesh 10-15min, then discharges；
5) physical and chemical index of gained ramming mass is after discharging：Percentage by weight >=31.5% of MgO；Fe2O3Weight percent Than≤8.2；SiO2Percentage by weight≤2.6；Al2O3Percentage by weight≤10.8；Igloss amount >=3.9；In 1500 DEG C × 3h Under the conditions of compressive resistance >=51MPa；Compressive resistance >=15MPa under the conditions of 1100 DEG C × 3h.
Embodiment：
The production method of embodiment 1-5 ramming masses, comprises the following steps：
1) raw material crushes and screens fine grinding：Magnesium chromium stone is crushed in crusher, 3-5mm, 1-3mm and 325 mesh is respectively prepared Raw material；
2) match：Raw material is weighed by above-mentioned parts by weight；
3) first the magnesia-chrome sand of 0-1mm, 1-3mm, 3-5mm are premixed uniform；
4) it is kneaded：5% resin-oatmeal and liquid resin are poured slowly into planetary sand mixer, then are separately added into the magnesium of 325 mesh Chromium sand mixing 10-15min and then discharging；
5) after discharging, Quality Inspector inspects the material by random samples, and sampling observation performs mark and is shown in Table 1.
The physical and chemical index of 1 ramming mass of table
6) check and accept and pack：
A is checked and accepted：
(1) YB 367-75 are pressed in sampling, the examination of material《Refractory product sampling, check and accept, take care of and transport rule》Carry out.
(2) chemical composition analysis is done in grab sample.
B packagings, transport, storage and quality certificate：
(1) YB 367-75 are pressed in the packaging of material, transport and storage《Refractory product sampling, check and accept, take care of and transport rule》Into OK.
(2) material must be accompanied by quality certificate that technical supervision department signs and issues when dispatching from the factory, indicate supplier's title or emblem mark, need Square title, Shipping Date, contract number, standard number, name of product, the trade mark, lot number and physical and chemical index, wait result to report.

Claims (4)

1. a kind of magnesium chromium matter ramming mass for liquid steel refining stove furnace bottom, it is characterised in that include the raw material of following parts by weight：
27-30 parts of the magnesia-chrome sand of 0 ＜ particle diameters≤1mm；24-26 parts of the magnesia-chrome sand of 1mm ＜ particle diameters≤3mm；3mm ＜ particle diameters≤6mm 25-27 parts of magnesia-chrome sand；14-17 parts of 325 mesh of magnesia-chrome sand；5-11 parts of bonding agent.
2. a kind of magnesium chromium matter ramming mass for liquid steel refining stove furnace bottom according to claim 1, it is characterised in that described Bonding agent be boric acid powder, resin-oatmeal, liquid resinous mixture.
3. a kind of magnesium chromium matter ramming mass for liquid steel refining stove furnace bottom according to claim 1, it is characterised in that described Weight percent content >=94.0% of MgO in magnesite clinker, Si in magnesia-chrome sand2O3Weight percent content >=40.0%.
A kind of 4. production of magnesium chromium matter ramming mass for liquid steel refining stove furnace bottom according to claim 1-3 any one Method, it is characterised in that comprise the following steps：
1) by the broken screening fine grinding of abandoned magnesia-chrome powder, and raw material is weighed by the parts by weight；
2) magnesia-chrome sand of 0 ＜ particle diameters≤1mm, 1mm ＜ particle diameter≤3mm, 3mm ＜ particle diameter≤6mm and boric acid powder are premixed uniform；
3) it is kneaded：Resin-oatmeal and liquid resin are poured slowly into planetary sand mixer, add the magnesia-chrome sand mixing 10- of 325 mesh 15min, then discharges；
5) physical and chemical index of gained ramming mass is after discharging：Percentage by weight >=31.5% of MgO；Fe2O3Percentage by weight≤ 8.2；SiO2Percentage by weight≤2.6；Al2O3Percentage by weight≤10.8；Igloss amount >=3.9；In 1500 DEG C × 3h conditions Lower compressive resistance >=51MPa；Compressive resistance >=15MPa under the conditions of 1100 DEG C × 3h.
CN201711170416.8A 2017-11-22 2017-11-22 A kind of magnesium chromium matter ramming mass and production method for liquid steel refining stove furnace bottom Pending CN107903040A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110218076A (en) * 2019-05-28 2019-09-10 海城利尔麦格西塔材料有限公司 A method of tundish/ladle pocket block filler is made using useless magnesite-chrome brick
CN111499358A (en) * 2020-04-21 2020-08-07 嵩明忠诚新材料科技有限公司 Magnesium-chromium dry-type anti-seepage ramming material
CN114853449A (en) * 2022-05-10 2022-08-05 海城利尔麦格西塔材料有限公司 Production method of stable impact-resistant iron alloy electric furnace bottom ramming mass
CN116253575A (en) * 2023-03-21 2023-06-13 东北大学 Magnesium-chromium sand magnesium-based ceramic core and preparation method thereof

Citations (8)

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Publication number Priority date Publication date Assignee Title
GB985505A (en) * 1962-05-15 1965-03-10 Bayer Ag Process for the production of unsaturated compounds by dehydrohalogenation
CN1800105A (en) * 2005-10-14 2006-07-12 河北理工大学 Dry type working liner material for erosion resistance continuous casting tundish
CN102140034A (en) * 2011-03-30 2011-08-03 武汉钢铁(集团)公司 Magnesium-chromium brick for vacuum chamber of RH furnace and preparation method thereof
CN102964137A (en) * 2012-12-04 2013-03-13 武汉钢铁(集团)公司 Low-silicon regeneration magnesium-chrome ramming material for RH refining furnace and preparation method thereof
CN103553676A (en) * 2013-10-29 2014-02-05 辽宁中兴矿业集团有限公司 Environment-friendly magnesia-chrome brick for steel refining and non-ferrous metal smelting and preparation method thereof
CN104177102A (en) * 2014-08-28 2014-12-03 洛阳利尔耐火材料有限公司 Furnace bottom ramming material of RH refining furnace
CN105152662A (en) * 2015-09-25 2015-12-16 攀枝花钢城集团有限公司 Dry ramming material for furnace body of medium-frequency induction furnace
CN107235712A (en) * 2017-07-18 2017-10-10 海城市中兴镁质合成材料有限公司 A kind of RH furnace bottom of fining furnace magnesium chromium matter ramming mass and its production method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB985505A (en) * 1962-05-15 1965-03-10 Bayer Ag Process for the production of unsaturated compounds by dehydrohalogenation
CN1800105A (en) * 2005-10-14 2006-07-12 河北理工大学 Dry type working liner material for erosion resistance continuous casting tundish
CN102140034A (en) * 2011-03-30 2011-08-03 武汉钢铁(集团)公司 Magnesium-chromium brick for vacuum chamber of RH furnace and preparation method thereof
CN102964137A (en) * 2012-12-04 2013-03-13 武汉钢铁(集团)公司 Low-silicon regeneration magnesium-chrome ramming material for RH refining furnace and preparation method thereof
CN103553676A (en) * 2013-10-29 2014-02-05 辽宁中兴矿业集团有限公司 Environment-friendly magnesia-chrome brick for steel refining and non-ferrous metal smelting and preparation method thereof
CN104177102A (en) * 2014-08-28 2014-12-03 洛阳利尔耐火材料有限公司 Furnace bottom ramming material of RH refining furnace
CN105152662A (en) * 2015-09-25 2015-12-16 攀枝花钢城集团有限公司 Dry ramming material for furnace body of medium-frequency induction furnace
CN107235712A (en) * 2017-07-18 2017-10-10 海城市中兴镁质合成材料有限公司 A kind of RH furnace bottom of fining furnace magnesium chromium matter ramming mass and its production method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110218076A (en) * 2019-05-28 2019-09-10 海城利尔麦格西塔材料有限公司 A method of tundish/ladle pocket block filler is made using useless magnesite-chrome brick
CN111499358A (en) * 2020-04-21 2020-08-07 嵩明忠诚新材料科技有限公司 Magnesium-chromium dry-type anti-seepage ramming material
CN114853449A (en) * 2022-05-10 2022-08-05 海城利尔麦格西塔材料有限公司 Production method of stable impact-resistant iron alloy electric furnace bottom ramming mass
CN116253575A (en) * 2023-03-21 2023-06-13 东北大学 Magnesium-chromium sand magnesium-based ceramic core and preparation method thereof

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Application publication date: 20180413