CN115043660A - 一种熔铸高铬耐火砖 - Google Patents

一种熔铸高铬耐火砖 Download PDF

Info

Publication number
CN115043660A
CN115043660A CN202210666112.5A CN202210666112A CN115043660A CN 115043660 A CN115043660 A CN 115043660A CN 202210666112 A CN202210666112 A CN 202210666112A CN 115043660 A CN115043660 A CN 115043660A
Authority
CN
China
Prior art keywords
sand
chromium
molding
casting
melting
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
CN202210666112.5A
Other languages
English (en)
Inventor
王俊涛
毛利民
尹超男
胡建辉
魏瀚
杨海云
刘继旺
徐如林
闫昕
徐琳琳
孙旭东
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.)
Ruitai Technology Co ltd
Original Assignee
Ruitai Technology 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 Ruitai Technology Co ltd filed Critical Ruitai Technology Co ltd
Priority to CN202210666112.5A priority Critical patent/CN115043660A/zh
Publication of CN115043660A publication Critical patent/CN115043660A/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
    • C04B35/66—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
    • C04B35/01—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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • 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
    • C04B35/653—Processes involving a melting step
    • C04B35/657—Processes involving a melting step for manufacturing refractories
    • 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
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
    • 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
    • C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
    • 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
    • C04B2235/74—Physical characteristics
    • C04B2235/77—Density
    • 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
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

本发明公开了一种熔铸高铬耐火砖，该耐火砖配方为电熔氧化铬砂80～95%、铬刚玉砂0~10%、氧化铝1～12%、氧化锆1～12%、粘土0~3%，其生产方法包括配料、砂型制作、保温箱预热、电炉熔融、浇铸成型、冷却退火和冷加工工序。本发明的熔铸高铬砖由抗侵蚀的氧化铬、铝铬固溶体Cr x Al2﹣x O3、斜锆石组成，各物相结晶良好、分布均匀、结合紧密，产品致密度高，气孔率低，抗侵蚀性及抗渗透性优异，可应用于煤气化炉、CFB锅炉、玻纤窑、浮法玻璃窑、高放废液玻璃固化陶瓷炉等窑炉侵蚀严重部位，有效提高熔炉使用寿命。

Description

一种熔铸高铬耐火砖
技术领域
本发明属于耐火材料技术领域，涉及一种熔铸高铬耐火砖。
背景技术
在煤气化炉、CFB锅炉和化工等行业，对耐火砖的高温及耐侵蚀性能要求远高于普通耐火砖，在这些领域，普遍使用的关键耐火材料为烧结高铬砖。目前烧结高铬砖的生产工艺主要为采用摩擦压砖机压制成型，在高温窑中经1600～1800℃烧成后使用，烧结高铬砖具有常温和高温强度高、耐磨性好、耐火度高、高温体积稳定性好等优点，得到了水煤浆气化炉等行业的广泛应用；但是通过烧结工艺制备的高铬砖晶粒发育不充分、物相结合差、气孔率高等缺点，导致烧结高铬砖在苛刻环境中的抗侵蚀性能不理想，如四喷嘴水煤浆气化炉的拱顶部位使用寿命仍然很短。
在玻璃工业，对于玻纤窑、浮法玻璃窑池壁材料，目前通常采用熔铸锆刚玉和熔铸氧化铝材料，但是在玻璃窑的流液洞、拐角、加料口、鼓泡、窑坎等侵蚀严重部位，其使用性能及使用寿命仍然不理想，急需高抗侵蚀的材料来替代使用。还有如高放射性危险废料热处理陶瓷炉，由于其要经受硼硅酸盐玻璃及高放射性废液的侵蚀，同时废液中还含有大量的重金属，需要耐火材料具有极其优异的抗侵蚀性能才能满足其服役要求。
氧化铬具有优异的化学稳定性能，在氧化物材料体系中具有最优的抗侵蚀性能，而熔铸耐火材料具有结构致密、气孔率低、晶体互钳为晶间结合、抗侵蚀能力强及蠕变率低等优点。因此为满足玻纤窑、水煤浆气化炉、高放废液玻璃固化陶瓷炉等高温窑炉苛刻环境用耐火材料的抗侵蚀性能需求，开发具有结合相紧密、结合强度优异、气孔率低的高抗侵蚀性能的熔铸氧化铬系材料具有重要的意义。
发明内容
本发明的目的是提供一种晶粒发育完整、物相结合程度高、致密度高、气孔率低、具有优异抗侵蚀性能的熔铸高铬制品，应用于高温窑炉苛刻使用环境，满足其使用性能要求，使窑炉使用寿命得到显著提高。
具体技术方案如下：
熔铸高铬砖，配料比按照重量百分数是：电熔氧化铬砂80～95%、铬刚玉砂0~10%、氧化铝1～12%、氧化锆1～12%、粘土0~3%。
制备工艺包括配料、砂型制作、保温箱预热、电炉熔融、浇铸成型、冷却退火和冷加工工序。
配料：将原料按照上述重量百分比加入混料机中进行混合，充分混合均匀后形成配合料。
砂型制作：型砂采用熔铸高铬砖体熟料，将型砂与水玻璃用自控高速混合机混合均匀，装入木模型内，经振动成型后钻取排气孔，涂刷市售高温离型剂后用高强度粘结剂制成整体砂型。型砂与水玻璃的重量比例为：型砂∶水玻璃＝80～100∶3～10，其中水玻璃的模数2.4～3.3。
保温箱预热：将整体砂型入保温箱，并装入优质散装隔热材料作为保温介质，对保温箱进行预热，使隔热材料及砂型温度≥300℃。
电炉熔融：混匀的配合料在三相电弧炉中采用中空电极进行熔化，熔化电压160～380V，熔化电流2000～12000A。熔融过程中采取从中空电极上部通氮气的技术措施，从中空电极持续导通的氮气压力为0.2～1.0MPa。
浇铸成型：将熔液注入整体砂型中，浇铸温度为1950～2450℃，浇铸速度150～1200kg/min。
冷却退火：退火工序中的降温速度0.02～0.10℃/kg·h。
冷加工：采用金刚石研磨、切割机床加工制品。
本发明熔铸高铬耐火砖具有以下优异效果：
（1）本发明浇铸退火工序中采用熔铸高铬砖熟料制备的整体砂型及散状隔热材料做为保温介质，同时对保温箱进行预热，可以实现制品均匀散热，减小浇铸时的温降，降低制品冷却析晶过程中的温差应力，减少制品内部微裂纹的产生，进一步提高产品的抗侵蚀性。
（2）本发明熔铸高铬砖物相由抗侵蚀的氧化铬、铝铬固溶体Cr x Al2﹣x O3、斜锆石组成。通过熔融工艺及浇铸退火工艺的调控，制品中各物相结晶良好、分布均匀、结合紧密，产品组织坚固，气孔率低，克服了同材质烧结材料结构不均匀的缺点，抗侵蚀性及抗渗透性得到显著提高，可有效提高熔炉的使用寿命。
具体实施方式：
实施例1
一种熔铸高铬砖，配料比按照重量百分数是：电熔氧化铬砂82%、铬刚玉砂6%、氧化铝4%、氧化锆7%、粘土1%。
制备工艺包括配料、砂型制作、保温箱预热、电炉熔融、浇铸成型、冷却退火和冷加工工序。
配料：将原料按照上述重量百分比加入混料机中进行混合，充分混合均匀后形成配合料。
砂型制作：型砂采用熔铸高铬砖体熟料，将型砂与水玻璃用自控高速混合机混合均匀，装入木模型内，经振动成型后钻取排气孔，涂刷市售高温离型剂后用高强度粘结剂制成整体砂型。型砂与水玻璃的重量比例为：型砂∶水玻璃＝95∶7.5，其中水玻璃的模数3.2。
保温箱预热：将整体砂型入保温箱，并装入优质散装隔热材料作为保温介质，对保温箱进行预热，使隔热材料及砂型温度≥300℃。
电炉熔融：混匀的配合料在三相电弧炉中采用中空电极进行熔化，熔化电压280～300V，熔化电流8200～8900A。熔融过程中采取从中空电极上部通氮气的技术措施，从中空电极持续导通的氮气压力为0.5MPa。
浇铸成型：将熔液注入整体砂型中，浇浇铸温度为2105℃，浇铸速度520kg/min。
冷却退火：退火工序中的降温速度0.06℃/kg·h。
冷加工：采用金刚石研磨、切割机床加工制品。
实施例2
一种熔铸高铬砖，配料比按照重量百分数是：电熔氧化铬砂92%、铬刚玉砂2%、氧化铝1.6%、氧化锆3%、粘土1.4%。
制备工艺包括配料、砂型制作、保温箱预热、电炉熔融、浇铸成型、冷却退火和冷加工工序。
配料：将原料按照上述重量百分比加入混料机中进行混合，充分混合均匀后形成配合料。
砂型制作：型砂采用熔铸高铬砖体熟料，将型砂与水玻璃用自控高速混合机混合均匀，装入木模型内，经振动成型后钻取排气孔，涂刷市售高温离型剂后用高强度粘结剂制成整体砂型。型砂与水玻璃的重量比例为：型砂∶水玻璃＝97∶6.5，其中水玻璃的模数3.3。
保温箱预热：将整体砂型入保温箱，并装入优质散装隔热材料作为保温介质，对保温箱进行预热，使隔热材料及砂型温度≥300℃。
电炉熔融：混匀的配合料在三相电弧炉中采用中空电极进行熔化，熔化电压300～320V，熔化电流7800～8600A。熔融过程中采取从中空电极上部通氮气的技术措施，从中空电极持续导通的氮气压力为0.6MPa。
浇铸成型：将熔液注入整体砂型中，浇浇铸温度为2210℃，浇铸速度495kg/min。
冷却退火：退火工序中的降温速度0.08℃/kg·h。
冷加工：采用金刚石研磨、切割机床加工制品。
实施例3
一种熔铸高铬砖，配料比按照重量百分数是：电熔氧化铬砂89%、铬刚玉砂3%、氧化铝2%、氧化锆4%、粘土2%。
制备工艺包括配料、砂型制作、保温箱预热、电炉熔融、浇铸成型、冷却退火和冷加工工序。
配料：将原料按照上述重量百分比加入混料机中进行混合，充分混合均匀后形成配合料。
砂型制作：型砂采用熔铸高铬砖体熟料，将型砂与水玻璃用自控高速混合机混合均匀，装入木模型内，经振动成型后钻取排气孔，涂刷市售高温离型剂后用高强度粘结剂制成整体砂型。型砂与水玻璃的重量比例为：型砂∶水玻璃＝92∶8.0，其中水玻璃的模数3.0。
保温箱预热：将整体砂型入保温箱，并装入优质散装隔热材料作为保温介质，对保温箱进行预热，使隔热材料及砂型温度≥300℃。
电炉熔融：混匀的配合料在三相电弧炉中采用中空电极进行熔化，熔化电压340～380V，熔化电流6500～7900A。熔融过程中采取从中空电极上部通氮气的技术措施，从中空电极持续导通的氮气压力为0.7MPa。
浇铸成型：将熔液注入整体砂型中，浇浇铸温度为2155℃，浇铸速度510kg/min。
冷却退火：退火工序中的降温速度0.10℃/kg·h。
冷加工：采用金刚石研磨、切割机床加工制品。
实施例4
一种熔铸高铬砖，配料比按照重量百分数是：电熔氧化铬砂85%、铬刚玉砂1.4%、氧化铝9%、氧化锆2%、粘土2.6%。
制备工艺包括配料、砂型制作、保温箱预热、电炉熔融、浇铸成型、冷却退火和冷加工工序。
配料：将原料按照上述重量百分比加入混料机中进行混合，充分混合均匀后形成配合料。
砂型制作：型砂采用熔铸高铬砖体熟料，将型砂与水玻璃用自控高速混合机混合均匀，装入木模型内，经振动成型后钻取排气孔，涂刷市售高温离型剂后用高强度粘结剂制成整体砂型。型砂与水玻璃的重量比例为：型砂∶水玻璃＝98∶6.5，其中水玻璃的模数3.2。
保温箱预热：将整体砂型入保温箱，并装入优质散装隔热材料作为保温介质，对保温箱进行预热，使隔热材料及砂型温度≥300℃。
电炉熔融：混匀的配合料在三相电弧炉中采用中空电极进行熔化，熔化电压260～280V，熔化电流7500～8600A。熔融过程中采取从中空电极上部通氮气的技术措施，从中空电极持续导通的氮气压力为0.4MPa。
浇铸成型：将熔液注入整体砂型中，浇浇铸温度为2085℃，浇铸速度480kg/min。
冷却退火：退火工序中的降温速度0.07℃/kg·h。
冷加工：采用金刚石研磨、切割机床加工制品。
在上述实施例1-4中制得的熔铸高铬砖及烧结高铬砖的理化性能如表1所示，通过表1可以看出本发明熔铸高铬砖各项性能明显优于烧结高铬砖，煤渣渗透深度得到大幅降低，抗侵蚀性能优优异，可有效提高熔炉使用寿命。
表1 熔铸高铬砖及烧结高铬砖的理化性能
Figure 832256DEST_PATH_IMAGE002

Claims (2)

1.一种熔铸高铬耐火砖，其特征在于：配合料由电熔氧化铬砂、铬刚玉砂、氧化铝、氧化锆、粘土组成，所述配合料的配方按重量百分比是：电熔氧化铬砂80～95%、铬刚玉砂0~10%、氧化铝1～12%、氧化锆1～12%、粘土0~3%。
2.一种生产权利要求1所述熔铸高铬耐火砖，其制备工艺包括配料、砂型制作、保温箱预热、电炉熔融、浇铸成型、冷却退火和冷加工工序，其特征在于：
配料：将原料按照上述重量百分比加入混料机中进行混合，充分混合均匀后形成配合料；
砂型制作：型砂采用熔铸高铬砖体熟料，将型砂与水玻璃用自控高速混合机混合均匀，装入木模型内，经振动成型后钻取排气孔，涂刷市售高温离型剂后用高强度粘结剂制成整体砂型，型砂与水玻璃的重量比例为：型砂∶水玻璃＝80～100∶3～10，其中水玻璃的模数2.4～3.3；
保温箱预热：将整体砂型入保温箱，并装入优质散装隔热材料作为保温介质，对保温箱进行预热，使隔热材料及砂型温度≥300℃；
电炉熔融：混匀的配合料在三相电弧炉中采用中空电极进行熔化，熔化电压160～380V，熔化电流2000～12000A，熔融过程中采取从中空电极上部通氮气的技术措施，从中空电极持续导通的氮气压力为0.2～1.0MPa；
浇铸成型：将熔液注入整体砂型中，浇铸温度为1950～2450℃，浇铸速度为150～1200kg/min；
冷却退火：退火工序中的降温速度0.02～0.10℃/kg·h；
冷加工：采用金刚石研磨、切割机床加工制品。
CN202210666112.5A 2022-06-14 2022-06-14 一种熔铸高铬耐火砖 Pending CN115043660A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210666112.5A CN115043660A (zh) 2022-06-14 2022-06-14 一种熔铸高铬耐火砖

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210666112.5A CN115043660A (zh) 2022-06-14 2022-06-14 一种熔铸高铬耐火砖

Publications (1)

Publication Number Publication Date
CN115043660A true CN115043660A (zh) 2022-09-13

Family

ID=83161737

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210666112.5A Pending CN115043660A (zh) 2022-06-14 2022-06-14 一种熔铸高铬耐火砖

Country Status (1)

Country Link
CN (1) CN115043660A (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116621578A (zh) * 2023-04-26 2023-08-22 广州市石基耐火材料厂 铬锆耐火材料及其制备方法和铬锆电极砖
CN118005379A (zh) * 2024-04-10 2024-05-10 中钢洛耐科技股份有限公司 一种电熔铬刚玉及其制备方法、电熔铬刚玉制品

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1069899A (en) * 1963-12-16 1967-05-24 Detag Improvements in glass melting tanks having refractory bricks containing chromium-oxide
US4490474A (en) * 1983-06-13 1984-12-25 Kennecott Corporation Fused cast high chrome refractory and method for manufacturing same
CN1347854A (zh) * 2001-11-18 2002-05-08 段俊峰 电熔法生产的高纯高铬砂及其系列产品和生产工艺方法
CN102105416A (zh) * 2008-07-22 2011-06-22 美商哈伯森·沃克耐火砖公司 氧化铬氧化铝耐火材料
CN106747367A (zh) * 2016-12-13 2017-05-31 中钢集团洛阳耐火材料研究院有限公司 一种高热震稳定性致密氧化铬制品的制备方法
CN112194473A (zh) * 2020-06-30 2021-01-08 中国建筑材料科学研究总院有限公司 一种二次混碾干燥制备高抗侵蚀和高抗热震的铬刚玉砖及其工艺
CN114507077A (zh) * 2022-01-06 2022-05-17 瑞泰科技股份有限公司 熔铸锆铬刚玉耐火砖及其制备方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1069899A (en) * 1963-12-16 1967-05-24 Detag Improvements in glass melting tanks having refractory bricks containing chromium-oxide
US4490474A (en) * 1983-06-13 1984-12-25 Kennecott Corporation Fused cast high chrome refractory and method for manufacturing same
CN1347854A (zh) * 2001-11-18 2002-05-08 段俊峰 电熔法生产的高纯高铬砂及其系列产品和生产工艺方法
CN102105416A (zh) * 2008-07-22 2011-06-22 美商哈伯森·沃克耐火砖公司 氧化铬氧化铝耐火材料
CN106747367A (zh) * 2016-12-13 2017-05-31 中钢集团洛阳耐火材料研究院有限公司 一种高热震稳定性致密氧化铬制品的制备方法
CN112194473A (zh) * 2020-06-30 2021-01-08 中国建筑材料科学研究总院有限公司 一种二次混碾干燥制备高抗侵蚀和高抗热震的铬刚玉砖及其工艺
CN114507077A (zh) * 2022-01-06 2022-05-17 瑞泰科技股份有限公司 熔铸锆铬刚玉耐火砖及其制备方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
仝尚好等: "α-Al2O3和Cr2O3微粉的加入量对高铬砖性能的影响", 《耐火材料》, 30 September 2013 (2013-09-30), pages 1 *
王朝亨等译: "《金属材料工程专业实验指导书》", 上海科学技术出版社, pages: 111 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116621578A (zh) * 2023-04-26 2023-08-22 广州市石基耐火材料厂 铬锆耐火材料及其制备方法和铬锆电极砖
CN118005379A (zh) * 2024-04-10 2024-05-10 中钢洛耐科技股份有限公司 一种电熔铬刚玉及其制备方法、电熔铬刚玉制品

Similar Documents

Publication Publication Date Title
CN115043660A (zh) 一种熔铸高铬耐火砖
EP2006260B1 (en) Refractory composition for glass melting furnaces
CN101921128B (zh) 一种用于石灰回转窑的浇注料
CN107746258B (zh) 一种超低线变化免烧透气砖及其制备方法和应用
CN114507077B (zh) 熔铸锆铬刚玉耐火砖及其制备方法
CN110304910A (zh) 一种高性能熔铸耐磨砖及其熔铸方法
CN101830718B (zh) 一种刚玉锆石砖的制造方法
Garbers-Craig Presidential address: How cool are refractory materials?
CN112194471A (zh) 一种超低气孔高铝砖及其制备工艺
JPH0336778B2 (zh)
SK283722B6 (sk) Ohňovzdorná bázická voľne tečúca odlievacia hmota a/alebo vysokokoncentrovaná vodná suspenzia na báze MgO a jej použitie
US5506181A (en) Refractory for use in casting operations
CN111620705A (zh) 一种用于炼钢电炉出钢槽的浇注料及其制备方法
CN115536370A (zh) 一种含六铝酸钙的铝镁干式振动料
CN105669217A (zh) 一种玻璃窑炉用硅耐火砖的生产方法
CN114262232A (zh) 一种精炼钢包工作衬用加入有石墨原料的无碳浇注料制备方法
CN100558676C (zh) 一种电炉钢包镁铝火泥
CN110423118B (zh) 一种用多晶硅废料生产的铜溜槽用复合陶瓷相防渗耐磨材料
CN114478031A (zh) 一种电炉钢包用不烧铝镁碳砖的生产工艺
CN113845353A (zh) 用于钢包工作衬包壁的过渡砖层
CN114180977B (zh) 一种铸造用无磷可塑料及其制备方法
CN113354428B (zh) 一种玻璃窑炉用耐侵蚀电熔锆刚玉砖及其制备方法
CN116396063B (zh) 一种用于低氧铜杆生产中抵抗铜液侵蚀与剥落的99浇注料
Xiangchong et al. Refractories, Properties and Application of
CN116924781A (zh) 浮法玻璃生产用高温锡槽底砖及其制备方法

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
CB03 Change of inventor or designer information
CB03 Change of inventor or designer information

Inventor after: Wang Juntao

Inventor after: Yan Xin

Inventor after: Xu Linlin

Inventor after: Sun Xudong

Inventor after: Mao Limin

Inventor after: Chen Haishan

Inventor after: Yin Chaonan

Inventor after: Hu Jianhui

Inventor after: Wei Han

Inventor after: Yang Haiyun

Inventor after: Liu Jiwang

Inventor after: Xu Rulin

Inventor before: Wang Juntao

Inventor before: Xu Linlin

Inventor before: Sun Xudong

Inventor before: Mao Limin

Inventor before: Yin Chaonan

Inventor before: Hu Jianhui

Inventor before: Wei Han

Inventor before: Yang Haiyun

Inventor before: Liu Jiwang

Inventor before: Xu Rulin

Inventor before: Yan Xin