CN109279874A - 一种低侵蚀的精炼钢包 - Google Patents

一种低侵蚀的精炼钢包 Download PDF

Info

Publication number
CN109279874A
CN109279874A CN201811138400.3A CN201811138400A CN109279874A CN 109279874 A CN109279874 A CN 109279874A CN 201811138400 A CN201811138400 A CN 201811138400A CN 109279874 A CN109279874 A CN 109279874A
Authority
CN
China
Prior art keywords
parts
carbon brick
magnesia carbon
refining ladle
antioxidant
Prior art date
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.)
Pending
Application number
CN201811138400.3A
Other languages
English (en)
Inventor
代雨勃
吴丽丽
钱奕好
杨继国
沈振华
张剑锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huzhou Sein Long Metal Products Co Ltd
Original Assignee
Huzhou Sein Long Metal Products Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huzhou Sein Long Metal Products Co Ltd filed Critical Huzhou Sein Long Metal Products Co Ltd
Priority to CN201811138400.3A priority Critical patent/CN109279874A/zh
Publication of CN109279874A publication Critical patent/CN109279874A/zh
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/02—Linings
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
    • C04B41/5029—Magnesia
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
    • C04B41/5033—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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials
    • C04B41/87—Ceramics
    • 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
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
    • 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
    • C04B2235/40—Metallic constituents or additives not added as binding phase
    • C04B2235/402—Aluminium
    • 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
    • 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
    • C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
    • C04B2235/9676—Resistance against chemicals, e.g. against molten glass or molten salts against molten metals such as steel or aluminium
    • 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
    • C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
    • C04B2235/9684—Oxidation resistance

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

本发明公开了一种低侵蚀的精炼钢包，精炼钢包的渣线采用镁碳砖制成，镁碳砖包括以下重量份原料制成：低硅高钙电熔镁砂35‑45份，鳞片石墨8‑12份，抗氧化剂25‑35份，结合剂15‑25份；每百份低硅高钙电熔镁砂中含有0.42‑0.46份的SiO2、1.25‑1.4份的CaO和97‑98份的MgO；所述鳞片石墨的粒度≤0.15mm、C含量为95％‑98％；所述抗氧化剂的粒度≤0.074mm；所述结合剂在25℃时的黏度17‑20pa·s。本发明由于所用镁碳砖的抗氧化性能好、中间不易断裂和高温强度高，具有使用寿命较长的优点。

Description

一种低侵蚀的精炼钢包
技术领域
本发明属于炼钢用的精炼钢包领域，尤其涉及一种低侵蚀的精炼钢包。
背景技术
渣线是精炼钢包最重要的组成部分之一，过去曾用过MgO-Cr203系耐火材料作为渣线材料，考虑到铬对环境有污染，MgO-Cr203系耐火材料制成的渣线用量少了，当前应用较为成功且广泛的渣线材料是镁碳砖(即Mg0-C砖)，镁碳砖的碳含量较高，在10％－20％之间。由于精炼钢包周转缓慢，精炼钢包备用状态下的烘烤时间都较长，有时接近60h，长时间高温烘烤导致镁碳砖中的碳氧化，发生脱碳，形成很厚的脱碳层，脱碳层的厚度达到20-30mm，由于碳的氧化脱除，脱碳层的砖体组织疏松脆化，容易被钢、渣液冲蚀磨损。同时，由于碳的脱除及脱碳层砖体组织的疏松，熔渣容易向脱碳层内渗透，并与镁砂反应，使得镁碳砖中的方镁石容易消失和镁砂颗粒容易解体，产生渣蚀，由于脱碳层的厚度大，渣蚀速度快。氧化、脱碳、冲蚀磨损、反应和渣蚀周而复始的快速循环进行，使得镁碳砖极易被侵蚀，造成了镁碳砖的易损毁，使得镁碳砖材质渣线的使用寿命较短，进而使得镁碳砖材质渣线的精炼钢包的使用寿命较短。因此，镁碳砖的抗氧化性能差导致镁碳砖极易被侵蚀，是导致镁碳砖材质渣线的精炼钢包使用寿命较短的原因之一。
精炼钢包的使用环境恶劣，具体使用环境为：①、LF(钢包精炼炉)的精炼温度1550-1610℃，精炼时间：35-45min；②、VD炉真空脱气，处理温度1550-1610℃，时间大于20min；③、精炼时造白渣，使用精炼合成渣、埋弧渣，碱度高(CaO与SiO2的质量比大于3.5)；④、全程底吹氩搅拌；⑤、出钢温度平均在1650℃以上，钢水在精炼钢包停留时间平均在130mins以上。在精炼钢包使用过程中，由于镁碳砖采用立砌砖型，镁碳砖的渣蚀速度较快且主要集中在镁碳砖的中部，所以镁碳砖中间易产生断裂，有时会产生掉块现象。因此，镁碳砖中间易断裂也是导致镁碳砖材质渣线的精炼钢包使用寿命较短的原因之一。
钢材精炼时电极加热温度高，氩气搅拌时间长，精炼渣粘度低，侵蚀性强，有时还需进行VD真空脱气处理等，因而渣线部位镁碳砖损毁的原因有多方面。从损毁机制上看，主要有以下几点：
(1)熔渣的侵蚀(即渣蚀)。精炼熔渣的成分以CaO、SiO2、AL2O3为主，高温处理时间长，熔渣碱度高，组成波动范围较大，有时还会含有大量CaF2，熔渣粘度很低，对镁碳砖有很强的侵蚀性，镁碳砖极易被侵蚀。
(2)高温的影响。在LF加热升温过程中，电极区温度相当高。由于精炼钢包进站定位的偏差或电极操作的影响，渣线部位形成热点区。镁碳砖的高温强度低，难以承受热点区的高温，加上熔渣的共同作用，镁碳砖容易严重损毁，导致镁碳砖材质渣线的精炼钢包的使用寿命较短。因此，镁碳砖高温强度低，也是导致镁碳砖材质渣线的精炼钢包使用寿命较短的原因之一。
(3)镁碳砖脱碳的影响。精炼钢包在周转过程中由于烘烤时间长，周转慢，镁碳砖表层易氧化脱碳，引起组织疏松，强度下降，不耐冲刷；同时，脱碳层容易产生渣渗透、侵蚀、形成较厚的变质层，造成结构剥落。
因此，现有的镁碳砖材质渣线的精炼钢包，由于所用镁碳砖的抗氧化性能差、中间易断裂和高温强度低，存在使用寿命较短的缺陷。
发明内容
本发明的目的在于，提供一种低侵蚀的精炼钢包。本发明由于所用镁碳砖的抗氧化性能好、中间不易断裂和高温强度高，具有使用寿命较长的优点。
本发明的技术方案：一种低侵蚀的精炼钢包，精炼钢包的渣线采用镁碳砖制成，镁碳砖包括以下重量份原料制成：低硅高钙电熔镁砂35-45份，鳞片石墨8-12份，抗氧化剂25-35份，结合剂15-25份；每百份低硅高钙电熔镁砂中含有0.42-0.46份的SiO2、1.25-1.4份的CaO和97-98份的MgO；所述鳞片石墨的粒度≤0.15mm、C含量为95％-98％；所述抗氧化剂的粒度≤0.074mm；所述结合剂在25℃时的黏度17-20pa·s。
前述的低侵蚀的精炼钢包中，每百份所述的低硅高钙电熔镁砂中含有0.45份的SiO2、1.32份的CaO和97.7份的MgO，其余为杂质，低硅高钙电熔镁砂的密度为3.5g/cm3；所述鳞片石墨的粒度≤0.15mm、C含量为96.7％；所述抗氧化剂是工业级铝粉和硼化合物的混合物，抗氧化剂的粒度≤0.074mm；所述结合剂是液体酚醛树脂，结合剂的w(残C)＞46％，结合剂在25℃时的黏度17-20pa·s。
前述的低侵蚀的精炼钢包中，每份所述的抗氧化剂中含有0.45-0.55份的工业级铝粉，其余为硼化合物。
前述的低侵蚀的精炼钢包中，所述镁碳砖的迎钢面喷涂有防氧化涂层。所述的迎钢面是指镁碳砖在精炼钢包中与钢水接触的面。
前述的低侵蚀的精炼钢包中，所述防氧化涂层的材质是Cr2O3或MgO。
前述的低侵蚀的精炼钢包中，所述镁碳砖采用平砌砖型。
与现有技术相比，本发明对现有的镁碳砖材质渣线的精炼钢包做了改进，改进点在于制作渣线的镁碳砖，镁碳砖改进后的常温性能(如强度和硬度)与改进前相比接近，镁碳砖改进后的抗氧化性能和高温强度与改进前相比明显提高。抗氧化性能的提高使得镁碳砖中的碳不易氧化脱除，砖体组织不易疏松脆化，不易被钢、渣液冲蚀磨损，同时，由于碳的不易氧化脱除及砖体组织的不易疏松脆化，熔渣难以向脱碳层渗透与镁砂反应，使得镁碳砖中的方镁石不易消失和镁碳砖中的镁砂颗粒不易解体，镁碳砖不易被渣蚀，氧化、脱碳、冲蚀磨损、反应和渣蚀周而复始循环进行的速度慢，使得镁碳砖不易被侵蚀，延长了镁碳砖材质渣线的使用寿命，进而延长了镁碳砖材质渣线的精炼钢包的使用寿命。由于镁碳砖改进后的高温强度提高，镁碳砖能够承受热点区的高温，镁碳砖不容易严重损毁，这也延长了镁碳砖材质渣线的使用寿命，进而延长了镁碳砖材质渣线的精炼钢包的使用寿命。
通过在镁碳砖的迎钢面喷涂防氧化涂层，进一步的提高了镁碳砖的抗氧化性能，喷涂有防氧化涂层的镁碳砖，在经过精炼钢包备用状态时的烘烤后，形成的脱碳层厚度仅为2-4mm，与改进前的镁碳砖相比大大降低，脱碳层厚度的降低，延缓了渣蚀速度，也就延缓了镁碳砖的侵蚀速度，使得镁碳砖材质渣线的使用寿命延长，进而延长了镁碳砖材质渣线的精炼钢包的使用寿命。
由于鳞片石墨在镁碳砖中具有取向性，使得镁碳砖的抗渣蚀性能也存在取向性，通过将镁碳砖设置成平砌砖型，可以让镁碳砖表面各个区域的抗渣蚀性能接近，镁碳砖受到的渣蚀比较均匀，所以镁碳砖不容易断裂。这也延长了镁碳砖材质渣线的使用寿命，进而延长了镁碳砖材质渣线的精炼钢包的使用寿命。
因此，本发明由于所用镁碳砖的抗氧化性能好、中间不易断裂和高温强度高，具有使用寿命较长的优点。
具体实施方式
下面结合实施例对本发明作进一步的说明，但并不作为对本发明限制的依据。
实施例1。一种低侵蚀的精炼钢包，精炼钢包的渣线采用镁碳砖制成，镁碳砖包括以下重量份原料制成：低硅高钙电熔镁砂40份，鳞片石墨10份，抗氧化剂30份，结合剂20份；
每百份所述的低硅高钙电熔镁砂中含有0.45份的SiO2、1.32份的CaO和97.7份的MgO，其余为杂质，低硅高钙电熔镁砂的密度为3.5g/cm3；所述鳞片石墨的粒度≤0.15mm、C含量为96.7％；所述抗氧化剂是工业级铝粉和硼化合物的混合物，抗氧化剂的粒度≤0.074mm；所述结合剂是液体酚醛树脂，结合剂的w(残C)＞46％，结合剂在25℃时的黏度17-20pa·s。
每份所述的抗氧化剂中含有0.5份的工业级铝粉，其余为硼化合物。
所述镁碳砖的迎钢面喷涂有防氧化涂层。所述的迎钢面是指镁碳砖在精炼钢包中与钢水接触的面。
所述防氧化涂层的材质是Cr2O3或MgO。
所述镁碳砖采用平砌砖型。
实施例2。一种低侵蚀的精炼钢包，精炼钢包的渣线采用镁碳砖制成，镁碳砖包括以下重量份原料制成：低硅高钙电熔镁砂35份，鳞片石墨8份，抗氧化剂25份，结合剂15份；每百份低硅高钙电熔镁砂中含有0.42份的SiO2、1.25的CaO和97份的MgO，其余为杂质；所述鳞片石墨的粒度≤0.15mm、C含量为95％；所述抗氧化剂的粒度≤0.074mm；所述结合剂在25℃时的黏度17-20pa·s。
所述低硅高钙电熔镁砂的密度为3.5g/cm3；所述抗氧化剂是工业级铝粉和硼化合物的混合物；所述结合剂是液体酚醛树脂，结合剂的w(残C)＞46％，结合剂在25℃时的黏度17pa·s。
每份所述的抗氧化剂中含有0.45份的工业级铝粉，其余为硼化合物。
所述镁碳砖的迎钢面喷涂有防氧化涂层。所述的迎钢面是指镁碳砖在精炼钢包中与钢水接触的面。
所述防氧化涂层的材质是Cr2O3。
所述镁碳砖采用平砌砖型。
实施例3。一种低侵蚀的精炼钢包，其特征在于：精炼钢包的渣线采用镁碳砖制成，镁碳砖包括以下重量份原料制成：低硅高钙电熔镁砂45份，鳞片石墨12份，抗氧化剂35份，结合剂25份；每百份低硅高钙电熔镁砂中含有0.46份的SiO2、1.4的CaO和98份的MgO；所述鳞片石墨的粒度≤0.15mm、C含量为98％；所述抗氧化剂的粒度≤0.074mm；所述结合剂在25℃时的黏度20pa·s。
所述低硅高钙电熔镁砂的密度为3.5g/cm3；所述抗氧化剂是工业级铝粉和硼化合物的混合物；所述结合剂是液体酚醛树脂，结合剂的w(残C)＞46％，结合剂在25℃时的黏度20pa·s。
每份所述的抗氧化剂中含有0.55份的工业级铝粉，其余为硼化合物。
所述镁碳砖的迎钢面喷涂有防氧化涂层。所述的迎钢面是指镁碳砖在精炼钢包中与钢水接触的面。
所述防氧化涂层的材质是MgO。
所述镁碳砖采用平砌砖型。

Claims (6)

1.一种低侵蚀的精炼钢包，其特征在于：精炼钢包的渣线采用镁碳砖制成，镁碳砖包括以下重量份原料制成：低硅高钙电熔镁砂35-45份，鳞片石墨8-12份，抗氧化剂25-35份，结合剂15-25份；每百份低硅高钙电熔镁砂中含有0.42-0.46份的SiO2、1.25-1.4份的CaO和97-98份的MgO；所述鳞片石墨的粒度≤0.15mm、C含量为95％-98％；所述抗氧化剂的粒度≤0.074mm；所述结合剂在25℃时的黏度17-20pa·s。
2.根据权利要求1所述的低侵蚀的精炼钢包，其特征在于：每百份所述的低硅高钙电熔镁砂中含有0.45份的SiO2、1.32份的CaO和97.7份的MgO，其余为杂质，低硅高钙电熔镁砂的密度为3.5g/cm3；所述鳞片石墨的粒度≤0.15mm、C含量为96.7％；所述抗氧化剂是工业级铝粉和硼化合物的混合物，抗氧化剂的粒度≤0.074mm；所述结合剂是液体酚醛树脂，结合剂的w(残C)＞46％，结合剂在25℃时的黏度17-20pa·s。
3.根据权利要求1所述的低侵蚀的精炼钢包，其特征在于：每份所述的抗氧化剂中含有0.45-0.55份的工业级铝粉，其余为硼化合物。
4.根据权利要求1所述的低侵蚀的精炼钢包，其特征在于：所述镁碳砖的迎钢面喷涂有防氧化涂层。
5.根据权利要求4所述的低侵蚀的精炼钢包，其特征在于：所述防氧化涂层的材质是Cr2O3或MgO。
6.根据权利要求1所述的低侵蚀的精炼钢包，其特征在于：所述镁碳砖采用平砌砖型。
CN201811138400.3A 2018-09-28 2018-09-28 一种低侵蚀的精炼钢包 Pending CN109279874A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811138400.3A CN109279874A (zh) 2018-09-28 2018-09-28 一种低侵蚀的精炼钢包

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811138400.3A CN109279874A (zh) 2018-09-28 2018-09-28 一种低侵蚀的精炼钢包

Publications (1)

Publication Number Publication Date
CN109279874A true CN109279874A (zh) 2019-01-29

Family

ID=65182363

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811138400.3A Pending CN109279874A (zh) 2018-09-28 2018-09-28 一种低侵蚀的精炼钢包

Country Status (1)

Country Link
CN (1) CN109279874A (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109762957A (zh) * 2019-03-25 2019-05-17 西安建筑科技大学 一种延长转炉镁碳砖寿命的方法
CN112979281A (zh) * 2021-04-16 2021-06-18 浙江宏丰炉料有限公司 一种耐高温新型镁碳砖及其制造工艺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101220195A (zh) * 2008-01-28 2008-07-16 郑州大学 含纳米碳粉的酚醛树脂、纳米碳改性的低碳镁碳砖及制备方法
CN101811881A (zh) * 2010-04-20 2010-08-25 重庆钢铁(集团)有限责任公司 钢包用MgO-C材质渣线砖
CN102276275A (zh) * 2011-07-21 2011-12-14 辽宁科技大学 用微波加热技术生产镁碳砖的方法
CN103524137A (zh) * 2013-09-29 2014-01-22 浙江金磊高温材料股份有限公司 一种炼钢转炉、钢包用镁碳砖及其制备方法
CN104759611A (zh) * 2015-04-22 2015-07-08 山东钢铁股份有限公司 一种钢包复合工作衬及其渣线部位的修砌方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101220195A (zh) * 2008-01-28 2008-07-16 郑州大学 含纳米碳粉的酚醛树脂、纳米碳改性的低碳镁碳砖及制备方法
CN101811881A (zh) * 2010-04-20 2010-08-25 重庆钢铁(集团)有限责任公司 钢包用MgO-C材质渣线砖
CN102276275A (zh) * 2011-07-21 2011-12-14 辽宁科技大学 用微波加热技术生产镁碳砖的方法
CN103524137A (zh) * 2013-09-29 2014-01-22 浙江金磊高温材料股份有限公司 一种炼钢转炉、钢包用镁碳砖及其制备方法
CN104759611A (zh) * 2015-04-22 2015-07-08 山东钢铁股份有限公司 一种钢包复合工作衬及其渣线部位的修砌方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
余西平 等: "提高精炼钢包渣线砖寿命的措施", 《耐火材料》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109762957A (zh) * 2019-03-25 2019-05-17 西安建筑科技大学 一种延长转炉镁碳砖寿命的方法
CN112979281A (zh) * 2021-04-16 2021-06-18 浙江宏丰炉料有限公司 一种耐高温新型镁碳砖及其制造工艺
CN112979281B (zh) * 2021-04-16 2021-09-24 浙江宏丰炉料有限公司 一种耐高温镁碳砖的生产装置及其工艺

Similar Documents

Publication Publication Date Title
CN104591752B (zh) 一种用于rh精炼炉浸渍管和环流管的烧成镁尖晶石砖及其制备方法
CN101148362A (zh) 一种镁橄榄石-碳质耐火砖及其制备方法
CN110315039B (zh) 一种无氟保护渣在含钛钢连铸中的应用
CN109136458A (zh) 一种转炉速效补炉法
CN104230359B (zh) 一种电弧炉内衬用镁碳砖及其制造方法
CN109279874A (zh) 一种低侵蚀的精炼钢包
CN108101561A (zh) 一种不锈钢冶炼用钢包浇注料及其制备方法
JPH0352428B2 (zh)
CN114315391B (zh) 一种可膨胀镁碳火泥及其制备方法和应用
CN107253865B (zh) 一种含碳耐火材料抗熔渣侵蚀的保护方法
JPH0753600B2 (ja) 溶鋼容器
CN113277836B (zh) 一种rh浸渍管用喷补料及其制备方法
CN115108842B (zh) 一种高氧钢连铸用长水口
JP6172227B2 (ja) 連続鋳造用タンディッシュ
CN104032068B (zh) 一种转炉出钢的方法
CN102424594A (zh) 一种MgAl２O４/MgO-SiC-C质复合耐火材料及其制备方法
CN109369155A (zh) 含尖晶石-铝酸钙复相材料的镁碳材料及其制备方法
CN111792920A (zh) 一种新型环保型转炉快速修补料
CN102312048B (zh) 一种适用于高铝硅钢的预熔型脱硫剂及其制备方法
CN111410521A (zh) 一种均化矾土非氧化物复合材料浇注料及其制备方法
KR100689154B1 (ko) 내식성 및 내산화성이 우수한 마그네시아-카본질내화벽돌용 내화조성물
CN111644607B (zh) 一种防止超低碳钢生产过程钢水增碳的方法
CN104789731B (zh) 半钢炼钢造渣剂及其造渣方法
CN103468881A (zh) 一种提高rh插入管寿命的方法
CN113234887B (zh) 洗炉底用调渣剂及其使用方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20190129