CN114507077B - 熔铸锆铬刚玉耐火砖及其制备方法 - Google Patents

熔铸锆铬刚玉耐火砖及其制备方法 Download PDF

Info

Publication number
CN114507077B
CN114507077B CN202210000253.3A CN202210000253A CN114507077B CN 114507077 B CN114507077 B CN 114507077B CN 202210000253 A CN202210000253 A CN 202210000253A CN 114507077 B CN114507077 B CN 114507077B
Authority
CN
China
Prior art keywords
casting
melting
percent
sand
refractory brick
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.)
Active
Application number
CN202210000253.3A
Other languages
English (en)
Other versions
CN114507077A (zh
Inventor
毛利民
王俊涛
杨海云
刘立秋
曾海军
徐如林
闫昕
魏瀚
李庆元
胡建辉
尹超男
徐琳琳
孙旭东
李欢
卿晓斌
刘继旺
王智勇
冯伟谦
朱伟
杨智超
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 CN202210000253.3A priority Critical patent/CN114507077B/zh
Publication of CN114507077A publication Critical patent/CN114507077A/zh
Application granted granted Critical
Publication of CN114507077B publication Critical patent/CN114507077B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C04B35/48—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 zirconium or hafnium oxides, zirconates, zircon or hafnates
    • C04B35/481—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 zirconium or hafnium oxides, zirconates, zircon or hafnates containing silicon, e.g. zircon
    • 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
    • C04B2235/3201—Alkali metal oxides 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
    • C04B2235/32—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
    • C04B2235/3206—Magnesium oxides 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
    • C04B2235/32—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
    • C04B2235/3241—Chromium oxides, chromates, 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
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/602—Making the green bodies or pre-forms by moulding
    • C04B2235/6022—Injection moulding
    • 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
    • C04B2235/9676—Resistance against chemicals, e.g. against molten glass or molten salts against molten metals such as steel or aluminium

Landscapes

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

Abstract

本发明公开了一种熔铸锆铬刚玉耐火砖及其制备方法，所述耐火砖配方为工业氧化铝粉28～31%、三氧化二铬25～30%、氧化镁0.8～2.5%、锆英砂38～45%和碳酸钠0.5～2.5%。其生产方法为先配料；再用中空电极上部通氮气、低压大电流和熔融期同步通氮的熔化工艺熔融配料；然后浇铸成型；浇铸后退火；最后冷加工制成耐火砖。本发明的熔铸锆铬刚玉耐火砖气孔率低，体积密度高，且抗危险废料侵蚀性强。

Description

熔铸锆铬刚玉耐火砖及其制备方法
技术领域
本发明属于耐火材料范畴，涉及熔铸锆铬刚玉耐火砖及制备方法，产品主要用于砌筑高放射性危险废料热处理熔炉。
背景技术
目前高放射性危险废料热处理熔炉，由于缺乏抗侵蚀能力强的耐火材料，只得采用铬质、铝锆质、锆石质、铝铬质耐火材料制作的耐火砖来筑炉。虽然这些烧结材料具有较高的耐火度、耐磨性、化学稳定性以及热震稳定性，但是，这些材料物相结合致密性差，气孔率高，导致耐火砖的抗侵蚀性不理想，严重影响熔炉的使用寿命。由于高放射性危险废料的热处理及其固化过程，均需要遥控操作，热处理熔炉的使用和维修十分困难，其内衬耐火材料也不能随时更换，耐火材料的可靠性是上述危险废料处理工艺的基础。这种情况下，普通耐火砖就无法满足要求，不能使用，因而，急需开发抗侵蚀性能优异的熔铸锆铬刚玉耐火砖。
发明内容
本发明所要解决的技术问题是提供一种物相结合致密度高、气孔率低，具有良好抗侵蚀性能的熔铸锆铬刚玉耐火砖及制备方法，以满足危险废料处理的需要。
为解决上述技术问题，本发明所采用的技术方案如下：
熔铸锆铬刚玉耐火砖是由工业氧化铝粉、三氧化二铬、氧化镁、锆英砂和碳酸钠组成的配合料制成，其配料比按重量百分比是：工业氧化铝粉28～31%、三氧化二铬25～30%、氧化镁0.8～2.5%、锆英砂38～45%和碳酸钠0.5～2.5%。
制备上述熔铸锆铬刚玉耐火砖的方法，它包括熔融、浇铸成型、退火和冷加工工序，其特征在于熔融工艺采取从中空电极上部通氮气的技术措施，利用低压大电流和熔融期同步通氮的熔化技术在三相电弧炉中熔融配合料，浇铸成型时的浇铸温度为1900～2200℃，浇铸速度180～1000kg/min，冷却退火的降温速度0.05～0.12℃/kg·h，铸型采用镁砂或本体熟料制作整体砂型。
本发明产品主要由铝铬固溶体Cr x Al2﹣x O3、斜锆石、镁铝铬复合尖晶石及无定形的硅酸盐相组成，其配合料通过高温熔融后，锆英砂在高温下分解形成ZrO2结晶析出，氧化铝和氧化铬在高温下形成连续固溶体，此外，还有少量的氧化铝、氧化铬和氧化镁形成镁铝铬复合尖晶石相，因而在材料结晶退火过程中无多余的氧化铝与氧化锆形成Al2O3-ZrO2共晶体。该耐火材料形成的结晶结构致密度高，气孔率极低。产品中的铝铬固溶体为主晶相、斜锆石为第二相，还有少量的镁铝铬复合尖晶石相，它们都是抗侵蚀性强的物相，而且分布均匀，致密结合，极大提高材料的抗侵蚀性能。本发明产品具有杂质含量少，气孔率低，体积密度和耐压强度高，抗侵蚀性能强的显著特点。
上述的熔融工序中应用中空电极，并从其上部通入氮气，采取低压大电流和熔融期同步通氮的熔化工艺在三相电弧炉中对配合料进行熔融，电弧炉的熔化电压180～360V，熔化电流3000～10000A，从中空电极持续导通的氮气压力为0.3～0.8 MPa 。
本工艺优于现有普通熔铸耐火产品的熔化工艺。通过熔融期同步通氮措施使电弧炉处于氮气气氛保护下，既能防止氧化铬在熔融过程中发生氧化产生剧毒的六价铬公害，又能避免电极氧化，减少电极消耗，在有利于三相电弧功率平衡，避免三相电弧功率超调的同时，可降低能耗，显著提高难熔物料的熔化效率和产品的质量。
上述的浇铸成型工序中熔液的浇铸温度为1900～2200℃，浇铸速度180～1000kg/min。
上述的本体熟料或镁砂整体砂型中，其重量比例为：
型砂∶水玻璃＝90～100∶6～10，其中水玻璃的模数3.1～3.3 。
型砂指镁砂或熔铸锆铬刚玉本体熟料，整体砂型优于现有的砂模板拼装模工艺。
上述的退火工序中采用优质散状隔热材料作保温介质，上述的熔铸锆铬刚玉耐火制品在退火工序中的降温速度0.05～0.12℃/kg·h 。
本工艺优于硅藻土、氧化铝粉、膨胀蛭石、石英砂等作为保温材料的退火方式，极大降低熔铸锆铬刚玉耐火制品的内应力，提高产品退火合格率，消除退火工序粉尘污染，改善工作环境。
上述的冷加工工序中采用金刚石研磨、切割机床加工制品。
采用本发明工艺制造的熔铸锆铬刚玉耐火砖，含有抗侵蚀的铝铬固溶体、镁铝铬复合尖晶石和斜锆石物相，不含α-Al2O3单晶及铝锆共晶体，物相分布均匀，结合紧密，材料致密度高，长期使用时变质层很薄，其侵蚀形式属于平衡性的均衡侵蚀，对熔炉熔体具有优异与持久的抗侵蚀能力。从而，克服了结构不均匀的同材质烧结耐火砖，在使用时变质层相对较厚，呈现非均衡的剧烈侵蚀的弊端，显著提高危险废料热处理熔炉的可靠性和使用寿命。
实施例1
配料：配合料由工业氧化铝粉、三氧化二铬、氧化镁、锆英砂和碳酸钠组成，其配料比按重量百分比是：工业氧化铝粉29.0%、三氧化二铬28.5%、氧化镁1.93%、锆英砂40.0%和碳酸钠1.9%。
制备工艺包括配料、电炉熔融、浇铸成型、冷却退火和冷加工。
型砂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完整的模型。
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6800～8000A，从中空电极持续导通的氮气压力为0.4 MPa。
浇铸成型：
浇铸温度为2185℃，浇铸速度485kg/min。
铸型用本体熟料整体砂型。其重量比例为本体熟料∶水玻璃＝90∶6.8，水玻璃模数3.22。
退火工序：制品退火降温速度0.08℃/kg·h 。
冷加工：采用金刚石研磨、切割机床加工制品。
本发明产品质量好，其理化性能数据如下：
1.化学成分(wt%):Al2O3 SiO2 Cr2O3 ZrO2 MgO Na2O
28.5% 13.0% 28.2% 27.0% 1.9% 1.1%
2.物理性能： 熔铸砖 烧结砖
显气孔率（％） 2.0 18.0
体积密度（g/cm3） 4.1 3.7
常温耐压强度（MPa） 355 40
抗危险废料熔体侵蚀性
（mm/24h，1200℃） 0.29 6.95
实施例2
配料：配合料由工业氧化铝粉、三氧化二铬、氧化镁、锆英砂和碳酸钠组成，其配料比按重量百分比是：工业氧化铝粉29.2%、三氧化二铬27.4%、氧化镁1.83%、锆英砂41.3%和碳酸钠2.1%。
电炉熔融：混匀的配料在三相电弧炉中采用中空电极进行熔化，熔化电压240～270V，熔化电流8000～8800A，从中空电极持续导通的氮气压力为0.6 MPa。
浇铸成型：
浇铸温度为2100℃，浇铸速度495kg/min。
铸型用镁砂整体砂型。其重量比例为镁砂∶水玻璃＝100∶9，水玻璃模数3.29。
退火工序：制品退火降温速度0.09℃/kg·h 。
采用金刚石研磨机床对制品冷加工后，产品的理化性能数据如下：
1.化学成分(wt%):Al2O3 SiO2 Cr2O3 ZrO2 MgO Na2O
28.7% 13.5% 27.1% 27.5% 1.8% 1.2%
2.物理性能： 熔铸砖 烧结砖
显气孔率（％） 2.5 16.0
体积密度（g/cm3） 4.08 3.65
常温耐压强度（MPa） 355 30
抗危险废料熔体侵蚀性
（mm/24h，1200℃） 0.33 6.98。

Claims (1)

1.一种熔铸锆铬刚玉耐火砖，其特征在于：配合料由工业氧化铝粉、三氧化二铬、氧化镁、锆英砂和碳酸钠组成，所述配合料的配方按重量百分比是：工业氧化铝粉28～31%、三氧化二铬25～30%、氧化镁0.8～2.5%、锆英砂38～45%和碳酸钠0.5～2.5%； 所述熔铸锆铬刚玉耐火砖的生产方法包括配料、熔融、浇铸成型、退火和冷加工工序，其特征在于：利用中空电极上部通氮气、低压大电流和熔融期同步通氮的熔化工艺熔融配合料，再浇铸成型，最后冷加工制成产品，所述熔化电压180～360V，熔化电流3000～10000A，氮气持续导通压力为0.3～0.8MPa，浇铸温度为1900－2200℃，浇铸速度180～1000kg/min，所述的退火工序中采用优质散状隔热材料作保温介质，退火工序的降温速度0.05～0.12℃/kg·h，所述浇铸成型的铸型用本体熟料或镁砂整体砂型，其重量比例为型砂∶水玻璃＝90～100∶6～10，其中水玻璃的模数3.1～3.3。
CN202210000253.3A 2022-01-06 2022-01-06 熔铸锆铬刚玉耐火砖及其制备方法 Active CN114507077B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210000253.3A CN114507077B (zh) 2022-01-06 2022-01-06 熔铸锆铬刚玉耐火砖及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210000253.3A CN114507077B (zh) 2022-01-06 2022-01-06 熔铸锆铬刚玉耐火砖及其制备方法

Publications (2)

Publication Number Publication Date
CN114507077A CN114507077A (zh) 2022-05-17
CN114507077B true CN114507077B (zh) 2023-01-17

Family

ID=81549131

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210000253.3A Active CN114507077B (zh) 2022-01-06 2022-01-06 熔铸锆铬刚玉耐火砖及其制备方法

Country Status (1)

Country Link
CN (1) CN114507077B (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115043660A (zh) * 2022-06-14 2022-09-13 瑞泰科技股份有限公司 一种熔铸高铬耐火砖
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

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4158569A (en) * 1978-07-10 1979-06-19 Corning Glass Works Fused refractory
CN1354151A (zh) * 2000-11-17 2002-06-19 淄博工陶耐火材料有限公司 熔铸锆刚玉异形产品及生产方法
CN101891369A (zh) * 2010-08-03 2010-11-24 瑞泰科技股份有限公司 熔铸α-β氧化铝筒形砖及其生产方法
CN102538468A (zh) * 2010-12-17 2012-07-04 瑞泰科技股份有限公司 低导热熔铸锆刚玉复合砖及其生产方法
CN104446564A (zh) * 2014-12-15 2015-03-25 中钢集团洛阳耐火材料研究院有限公司 一种含氧化铬的锆刚玉砖的制备方法
CN105174975A (zh) * 2015-06-12 2015-12-23 瑞泰科技股份有限公司 一种致密抗侵蚀增强烧结氧化锆大砖及其生产工艺
CN112028651A (zh) * 2020-09-09 2020-12-04 登封市阳光炉料有限公司 一种铬刚玉料及其生产方法
CN112745111A (zh) * 2020-12-07 2021-05-04 北京金隅通达耐火技术有限公司 一种危险废物处置回转窑用高致密铬锆刚玉砖

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1225432C (zh) * 2003-12-12 2005-11-02 北京瑞泰高温材料科技股份有限公司 细晶粒铝锆复合耐火原料
CN105036715B (zh) * 2015-07-09 2017-12-12 山东大东联石油设备有限公司 一种铝铬质耐火材料及其制备方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4158569A (en) * 1978-07-10 1979-06-19 Corning Glass Works Fused refractory
CN1354151A (zh) * 2000-11-17 2002-06-19 淄博工陶耐火材料有限公司 熔铸锆刚玉异形产品及生产方法
CN101891369A (zh) * 2010-08-03 2010-11-24 瑞泰科技股份有限公司 熔铸α-β氧化铝筒形砖及其生产方法
CN102538468A (zh) * 2010-12-17 2012-07-04 瑞泰科技股份有限公司 低导热熔铸锆刚玉复合砖及其生产方法
CN104446564A (zh) * 2014-12-15 2015-03-25 中钢集团洛阳耐火材料研究院有限公司 一种含氧化铬的锆刚玉砖的制备方法
CN105174975A (zh) * 2015-06-12 2015-12-23 瑞泰科技股份有限公司 一种致密抗侵蚀增强烧结氧化锆大砖及其生产工艺
CN112028651A (zh) * 2020-09-09 2020-12-04 登封市阳光炉料有限公司 一种铬刚玉料及其生产方法
CN112745111A (zh) * 2020-12-07 2021-05-04 北京金隅通达耐火技术有限公司 一种危险废物处置回转窑用高致密铬锆刚玉砖

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PREPARATION OF FUSION-CAST CHROMIUM-SPINELID REFRACTORIES USING VESSEL SCRAP;V.A.Sokolov et al;《Refractories and Industrial Ceramics》;20130731;第54卷(第2期);第95页右栏第2-3段、第96页右栏第2-3段 *
V.A.Sokolov et al.PREPARATION OF FUSION-CAST CHROMIUM-SPINELID REFRACTORIES USING VESSEL SCRAP.《Refractories and Industrial Ceramics》.2013,第54卷(第2期),第95-99页. *

Also Published As

Publication number Publication date
CN114507077A (zh) 2022-05-17

Similar Documents

Publication Publication Date Title
CN114507077B (zh) 熔铸锆铬刚玉耐火砖及其制备方法
CN100478305C (zh) 一种氧化铝质电炉盖浇注料及其制备方法
CN103880454B (zh) 一种出铁口再生料回收利用的快干式防爆浇注料
CN112979292B (zh) 一种加入氧化钇的低渗出电熔锆刚玉砖的制备方法
CN110818437B (zh) 一种碳化硅-氧化物复合耐火制品的制备方法
CN104446564A (zh) 一种含氧化铬的锆刚玉砖的制备方法
CN102335739B (zh) 复合无硅长水口及其制造方法
CN107244904A (zh) 一种刚玉‑尖晶石浇注料及其制备方法
WO2001092183A1 (fr) Matiere refractaire coulee poreuse contenant beaucoup d'alumine et procede de production correspondant
CN115417661B (zh) 一种中间包干式料、中间包工作衬及其制备方法
CN115321956B (zh) 一种利用高温液相增韧镁碳砖及其制备方法
CN102285803A (zh) 一种电熔锆刚玉耐火砖的生产方法
CN106365647A (zh) 一种浇注料
CN102538468B (zh) 低导热熔铸锆刚玉复合砖及其生产方法
CN105777148A (zh) 一种中频感应炉用线圈胶泥及其制备方法
US11904386B2 (en) Casting ladle for casting aluminum alloy
CN100453502C (zh) 电熔镁铝锆合成料生产方法
CN112225543A (zh) 一种应用于玻璃窑炉蓄热室的熔铸成型筒型陶瓷砖及其制备方法
CN103242047A (zh) 一种锆刚玉玻璃窑耐火砖的生产方法
CN106396699A (zh) 一种添加ZrN‑SiAlON的抗铝液渗透浇注料及其制备方法
CN106495721A (zh) 一种感应线圈胶泥及其制备方法
AU2015372635A1 (en) Method for producing melt-cast potassium fluorine-phlogopite
CN115043660A (zh) 一种熔铸高铬耐火砖
CN104926335A (zh) 一种钢包浇注料
CN103360088A (zh) 一种铜冶炼炉用稀氧燃烧器烧嘴砖及制作方法

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
GR01 Patent grant
GR01 Patent grant