CN1086683C - 混铁炉铁水槽用耐火材料 - Google Patents

混铁炉铁水槽用耐火材料 Download PDF

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CN1086683C
CN1086683C CN99115198A CN99115198A CN1086683C CN 1086683 C CN1086683 C CN 1086683C CN 99115198 A CN99115198 A CN 99115198A CN 99115198 A CN99115198 A CN 99115198A CN 1086683 C CN1086683 C CN 1086683C
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refractory material
molten iron
aggregate
iron tank
micro mist
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CN1250041A (zh
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孙毅杰
旷渝训
陈浩
王伟
黄晓峰
安树全
邓连明
王文楷
周建
袁学军
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Chongqing Iron and Steel Group Co Ltd
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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
    • C04B35/6303—Inorganic additives
    • 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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/74—Ceramic products containing macroscopic reinforcing agents containing shaped metallic materials
    • C04B35/76—Fibres, filaments, whiskers, platelets, or the like
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
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  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Products (AREA)

Abstract

本发明公开了一种混铁炉铁水槽用耐火材料，是将下列原料按照通常的生产工艺进行混料、振动、成型、养生、干燥而成，其特征在于耐火材料的组成采用特级重烧矾土骨料、SiO2微粉、水泥、棕刚玉粉、Al2O3微粉、铁水槽回收再生料、钢纤维。本发明由于采用上述材料制作成低水泥浇注的耐火材料，因此具有快硬早强、高强度、高耐火度、高荷重软化温度、抗冲刷和抗渣性好的特点，并且热震稳定性好。用本耐火材料制作的混铁炉铁水槽，使用寿命长，成本低。

Description

混铁炉铁水槽用耐火材料
本发明属于耐火材料领域，特别涉及一种混铁炉铁水槽用的耐火材料。
转炉炼钢是通过冶炼方法，将铁水中的C、P、S的含量降低。混铁炉在转炉炼钢过程中，主要起用于保温和储备铁水的作用。在需要将混铁炉中的铁水通过铁水槽倒在钢包中。通常使用的铁水槽，采用一般的耐火材料，其抗铁水冲刷能力差，抗铁水酸性渣性差，由于热抗震稳定性差而产生龟裂，容易受铁水侵蚀，因此使用寿命只要2-3天。
本发明的目的，是提供一种混铁炉铁水槽用耐火材料。它具有抗铁水冲刷能力强，抗渣性能好，热稳定性好，使用寿命长的特点。
为达上述目的，本发明是将下列原料按照通常的生产工艺进行混料、振动、成型、养生、干燥而成，其特征在于耐火材料的组成采用特级重烧矾土骨料、SiO2微粉、水泥、棕刚玉粉、Al2O3微粉、铁水槽回收再生料、钢纤维，各组分的组成为(以下为重量份)：
特级重烧矾土骨料的组成为：
8-5mm的骨料为10-12份；
5-3mm的骨料为9-12份；
3-1mm的骨料为20-22份；
0-1mm的骨料为8-11份；
特级重烧矾土细粉2-4份；
SiO2微粉3-5份；
水泥4-6份；
棕刚玉粉4-6份；
Al2O3微粉4-6份；
铁水槽回收再生料24-29份；
钢纤维为2-3份。
本发明上述组分，可以采用特级重烧矾土骨料、SiO2微粉、水泥、棕刚玉粉、Al2O3微粉、铁水槽回收再生料、钢纤维。其中特级重烧矾土骨料当使用温度在1500℃时，对C/S≤1的铁渣有较强的抵抗作用，用特级重烧矾土骨料做本耐火材料的骨料，可以提高其抗铁渣性能。特级重烧矾土骨料理化指标为Al2O3≥87％，Fe2O3≤1.8％，CaO≤0.4％，K2O+Na2O≤0.3％，体积密度≥3.3g/cm3，吸水率≤3％。基质采用棕刚玉粉，通过提高基质的品级，从而提高玻璃相的性能。添加剂Al2O3微粉使耐火材料在≥1000℃时，填充孔隙并参加固相反应，形成陶瓷结合，使组织致密细化，以增加本耐火材料的高温强度。添加剂Al2O3微粉的理化指标为Al2O3≥98％，Fe2O3≤0.3％，细度要求为≤2μm应≥80％。添加剂SiO2微粉，一方面可以起填充微粒的作用，另一方面利用其活性起组织的结合作用，以提高本耐火材料的常温和中温的强度。添加剂SiO2微粉的理化指标为SiO2≥92％，耐火度≥1690℃，细度要求为≤1μm应≥85％。水泥最好采用电熔Al-80纯铝酸钙水泥，其比表面积＞7000cm2/g，利用其与水发生水化反应起结合作用，使本耐火材料具有较强的中温强度，同时可以利用水泥在中温时的游离CaO与Al2O3微粉发生固相反应，形成高熔点的CA2和CA6晶体，提高本耐火材料的中温强度。外加剂钢纤维，有强力改善本耐火材料的热震稳定性，同时可以大大提高本耐火材料的强度。
本耐火材料的主要矿相为莫来石、刚玉和石英。其中莫来石具有良好的耐浸蚀性，优良的抗热震稳定性；刚玉具有优良的耐冲刷性和高耐火度；石英对酸性渣有较强的抵抗作用。
本发明由于采用特级重烧矾土骨料、SiO2微粉、水泥、棕刚玉粉、Al2O3微粉、铁水槽回收再生料、钢纤维制作成低水泥浇注的耐火材料，因此具有快硬早强、高强度、高耐火度、高荷重软化温度、抗冲刷和抗渣性好的特点，并且热震稳定性好。使用本耐火材料制作的混铁炉铁水槽，使用寿命长。一般的耐火材料用2-3天，本耐火材料用15天左右，成本为1400元/吨，销售价4450元/吨，因此有较好的利润。
下面通过实施例对本发明做进一步的说明。但本发明不仅限于这些例子。
根据本发明所述的耐火材料成分，配料，其具体化学成分如表1所示，配料后，按耐火材料预制件的通常生产工艺进行混料、振动成型、养生、干燥后即为成品。
表1：本发明所述的耐火材料的各原料成组成(以下为重量份)
 序号 特级重烧矾土骨料  SiO2微粉  Al2O3微粉  Al-80水泥  棕刚玉细粉  特级重烧矾土细粉  回收再生料 钢纤维
  8-5mm   5-3mm   3-1mm   0-1mm
 1   10   10   21   9   3   5   5   4   2     29     2
 2   11   9   20   10   4   4   4   6   4     26     2
 3   12   9   22   11   3   5   5   4   2     24     3
 4   10   11   20   8   3   6   6   6   3     25     2

Claims (1)

1.一种混铁炉铁水槽用耐火材料，是将下列原料按照通常的生产工艺进行混料、振动、成型、养生、干燥而成，其特征在于耐火材料的组成采用特级重烧矾土骨料、SiO2微粉、水泥、棕刚玉粉、Al2O3微粉、铁水槽回收再生料、钢纤维，各组分的组成为(以下为重量份)：
特级重烧矾土骨料的组成为：8-5mm的骨料为10-12份；5-3mm的骨料为9-12份；3-1mm的骨料为20-22份；0-1mm的骨料为8-11份；
特级重烧矾土细粉2-4份；
SiO2微粉3-5份；
水泥4-6份；
棕刚玉粉4-6份；
Al2O3微粉4-6份；
铁水槽回收再生料24-29份；
钢纤维为2-3份。
CN99115198A 1999-10-10 1999-10-10 混铁炉铁水槽用耐火材料 Expired - Fee Related CN1086683C (zh)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100383082C (zh) * 2005-02-28 2008-04-23 宝山钢铁股份有限公司 铁水流槽用非氧化物复合耐火材料
CN101475387B (zh) * 2009-01-16 2011-07-20 成都蜀冶新材料有限责任公司 超微粉结合超低水泥耐火浇注料及其使用方法
CN101475388B (zh) * 2009-01-16 2011-05-25 成都蜀冶新材料有限责任公司 高耐磨浇注料及其使用方法
CN102815956B (zh) * 2012-08-29 2014-04-09 江苏恒耐炉料集团有限公司 余热发电管道用耐磨涂抹料

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85109474A (zh) * 1985-12-20 1987-08-26 国营青岛玛钢厂 用于感应电炉炉体的耐火材料及其烘烤方法
CN1108634A (zh) * 1994-08-25 1995-09-20 武汉钢铁(集团)公司 烧成微孔铝炭砖

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85109474A (zh) * 1985-12-20 1987-08-26 国营青岛玛钢厂 用于感应电炉炉体的耐火材料及其烘烤方法
CN1108634A (zh) * 1994-08-25 1995-09-20 武汉钢铁(集团)公司 烧成微孔铝炭砖

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