[go: up one dir, main page]

CN105503212A - 一种镁碳砖及其制备方法 - Google Patents

一种镁碳砖及其制备方法 Download PDF

Info

Publication number
CN105503212A
CN105503212A CN201510967318.1A CN201510967318A CN105503212A CN 105503212 A CN105503212 A CN 105503212A CN 201510967318 A CN201510967318 A CN 201510967318A CN 105503212 A CN105503212 A CN 105503212A
Authority
CN
China
Prior art keywords
mixing
carbon brick
magnesia carbon
magnesite clinker
electrosmelted magnesite
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.)
Granted
Application number
CN201510967318.1A
Other languages
English (en)
Other versions
CN105503212B (zh
Inventor
曹丽云
张雪松
俞晓东
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.)
JIANGSU SUJIA GROUP NEW MATERIAL CO Ltd
Original Assignee
JIANGSU SUJIA GROUP NEW MATERIAL 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 JIANGSU SUJIA GROUP NEW MATERIAL CO Ltd filed Critical JIANGSU SUJIA GROUP NEW MATERIAL CO Ltd
Priority to CN201510967318.1A priority Critical patent/CN105503212B/zh
Publication of CN105503212A publication Critical patent/CN105503212A/zh
Application granted granted Critical
Publication of CN105503212B publication Critical patent/CN105503212B/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
    • C04B35/03—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
    • 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
    • C04B35/632—Organic additives
    • C04B35/6325—Organic additives based on organo-metallic compounds
    • 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
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/63472—Condensation polymers of aldehydes or ketones
    • 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
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
    • C04B2235/3821—Boron carbides
    • 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
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
    • C04B2235/3826—Silicon carbides
    • 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
    • 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
    • C04B2235/02—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
    • C04B2235/428—Silicon
    • 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
    • C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
    • 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
    • C04B2235/50—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
    • 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

Landscapes

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

Abstract

本发明涉及一种镁碳砖及其制备方法，包括组分按重量百分数计为：电熔镁砂颗粒60～75%，电熔镁砂细粉10～30%，碳素5～10%，抗氧化剂1～5%，结合剂1～3%，糠醛废液0.4～1%，制备时首先将电熔镁砂颗粒放入混炼机中干混2～15min，然后加入酚醛树脂和糠醛废液继续混合5～15min，接着向其中加入碳素，混合5～15min，最后加入电熔镁砂细粉和抗氧化剂继续混合8～15min形成泥料，混炼机转速定为950～1000r/min，混炼时间为10～60min，经过压制成型和烘干固化后制得镁碳砖。本发明制备方法简单，步骤易于操作，改进了镁碳砖混料的均匀性，提高镁碳砖的混料质量，降低工人的劳动强度，减少酚醛树脂的使用量，糠醛废液的加入使得混料过程中更均匀防止酚醛树脂结团现象的发生。

Description

一种镁碳砖及其制备方法
技术领域
本发明涉及一种镁碳砖及其制备方法，属于耐火材料制备技术领域。
背景技术
自上世纪70年代末，把碳引入耐火材料中引起了以镁碳砖为代表的冶炼耐火材料的一次革命。由于充分发挥了石墨碳的超高熔点，高温高强度、低热膨胀率的优势。含碳耐火制品具有耐火度高、抗渣侵性能好、耐热震性强及高温蠕变小等优点,在炼钢高炉、电炉、转炉、精炼炉连铸系统上广泛得到应用,使用寿命大幅度提高。同时,由于含碳制品大部分不需高温烧成，节省能源，制作工艺简单,，因而被全世界许多国家迅速推广应用。
镁碳砖通常使用酚醛树脂结合，酚醛树脂结合剂由于粘度较大，在混料过程中容易产生泥团，而且会黏在混料机的碾头上，难以清理，既增加了工人的劳动强度，又影响了砖的配比和质量，且生产酚醛树脂的主要原料是煤和石油，越用越少。
糠醛废液是生产糠醛产生的废水，含有醋酸、糠醛以及醇类、醛类、酮类、酯类、有机酸类等多种有机物，根据色谱、质谱分析，有机物达40余种，其中以醋酸、糠醛为主。废水水样显透明状，显淡黄色度，pH值大约为2，COD10000～20000mg/L，BOD大约为2500～3000mg/L，B/C为0.2～0.25，废水中含有大量的乙酸、蚁酸等有机酸，可生化性差，属于高浓度有机酸性废水。糠醛废液的处理工艺比较复杂，对环境影响较大。
发明内容
本发明的目的是为了解决现有技术中镁碳砖中酚醛树脂在混合过程中容易产生泥团影响原料混匀的问题，提供了一种酚醛树脂用量较少的镁碳砖及其制备方法。
本发明采用如下技术方案：一种镁碳砖，包括组分按重量百分数计为：电熔镁砂颗粒60～75％，电熔镁砂细粉10～30％，碳素5～10％，抗氧化剂1～5％，结合剂1～3％，糠醛废液0.4～1％。
进一步的，所述碳素为石墨，石墨的粒度为350～400目，石墨中碳含量大于94％；
进一步的，所述电熔镁砂颗粒大小为1～5mm。
进一步的，所述电熔镁砂细粉的粒度为300～350目。
进一步的，所述抗氧化剂为铝粉、铝镁合金粉、金属硅粉、碳化硅或碳化硼中的一种或几种。
进一步的，所述结合剂为酚醛树脂。
镁碳砖的制备方法，包括如下步骤：
(1)混炼：采用旋移循环式混炼机进行混炼，按原料配比分别称取电熔镁砂颗粒、电熔镁砂细粉、碳素、抗氧化剂、结合剂和糠醛废液，首先将电熔镁砂颗粒放入混炼机中干混2～15min，然后加入酚醛树脂和糠醛废液继续混合5～15min，接着向其中加入碳素，混合5～15min，最后加入电熔镁砂细粉和抗氧化剂继续混合8～15min形成泥料，混炼机转速定为950～1000r/min，混炼时间为10～60min；
(2)压制成型：将混炼完成的泥料加入模具中采用复合式真空摩擦压砖机进行压制成型制成砖坯，压力为2500-6300KN；
(3)烘烤固化：将砖坯置于隧道式干燥窑中烘烤固化得到镁碳砖，烘烤温度为150～300℃，烘烤时间为10～20h。
通过选用电熔镁砂颗粒提高镁碳砖的耐高温性、抗渣侵蚀性；通过碳素保持镁碳砖的高温强度、抗热震性、抗渣渗透性；通过抗氧化剂保护碳素和非氧化物不被氧化；通过添加糠醛废液解决酚醛树脂结合剂由于粘度较大，在混料过程中容易产生泥团且会黏在混料机的碾头上难以清理的问题，减轻了工人的劳动强度，又保证了砖的配比和质量。
本发明制备方法简单，步骤易于操作，改进了镁碳砖混料的均匀性，提高镁碳砖的混料质量，降低工人的劳动强度，减少酚醛树脂的使用量，降低了成本，糠醛废液的加入使得混料过程中更均匀防止酚醛树脂结团现象的发生。
具体实施方式
下面将结合具体实施例对本发明作进一步的说明。
实施例一：一种镁碳砖，包括组分按重量百分数计为：电熔镁砂颗粒75％，电熔镁砂细粉14％，石墨7.2％，铝粉1％，酚醛树脂2.1％，糠醛废液0.7％。
镁碳砖的制备方法，包括如下步骤：
(1)混炼：采用旋移循环式混炼机进行混炼，按原料配比分别称取电熔镁砂颗粒、电熔镁砂细粉、石墨、铝粉、酚醛树脂和糠醛废液，首先将电熔镁砂颗粒放入混炼机中干混5min，然后加入酚醛树脂和糠醛废液继续混合5min，接着向其中加入石墨，混合8min，最后加入电熔镁砂细粉和铝粉继续混合10min形成泥料，混炼机转速定为970r/min；
(2)压制成型：将混炼完成的泥料加入模具中采用复合式真空摩擦压砖机进行压制成型制成砖坯，压力为3000KN；
(3)烘烤固化：将砖坯置于隧道式干燥窑中烘烤固化，烘烤温度为200℃，烘烤时间为15h。
实施例二：一种镁碳砖，包括组分按重量百分数计为：电熔镁砂颗粒70％，电熔镁砂细粉20％，石墨5％，铝镁合金粉2％，酚醛树脂2.5％，糠醛废液0.5％。
镁碳砖的制备方法，包括如下步骤：
(1)混炼：采用旋移循环式混炼机进行混炼，按原料配比分别称取电熔镁砂颗粒、电熔镁砂细粉、石墨、铝镁合金粉、酚醛树脂和糠醛废液，首先将电熔镁砂颗粒放入混炼机中干混8min，然后加入酚醛树脂和糠醛废液继续混合10min，接着向其中加入石墨，混合10min，最后加入电熔镁砂细粉和铝镁合金粉继续混合12min形成泥料，混炼机转速定为980r/min；
(2)压制成型：将混炼完成的泥料加入模具中采用复合式真空摩擦压砖机进行压制成型制成砖坯，压力为3500KN；
(3)烘烤固化：将砖坯置于隧道式干燥窑中烘烤固化，烘烤温度为200℃，烘烤时间为20h。
实施例三：一种镁碳砖，包括组分按重量百分数计为：电熔镁砂颗粒65％，电熔镁砂细粉20％，石墨8％，金属硅粉4.2％，酚醛树脂2.4％，糠醛废液0.4％。
镁碳砖的制备方法，包括如下步骤：
(1)混炼：采用旋移循环式混炼机进行混炼，按原料配比分别称取电熔镁砂颗粒、电熔镁砂细粉、碳素、金属硅粉、酚醛树脂和糠醛废液，首先将电熔镁砂颗粒放入混炼机中干混10min，然后加入酚醛树脂和糠醛废液继续混合8min，接着向其中加入石墨，混合12min，最后加入电熔镁砂细粉和金属硅粉继续混合12min形成泥料，混炼机转速定为970r/min；
(2)压制成型：将混炼完成的泥料加入模具中采用复合式真空摩擦压砖机进行压制成型制成砖坯，压力为4000KN；
(3)烘烤固化：将砖坯置于隧道式干燥窑中烘烤固化，烘烤温度为250℃，烘烤时间为15h。
实施例四：一种镁碳砖，包括组分按重量百分数计为：电熔镁砂颗粒60，电熔镁砂细粉30％，石墨5％，碳化硅和碳化硼3％，酚醛树脂1％，糠醛废液1％。
镁碳砖的制备方法，包括如下步骤：
(1)混炼：采用旋移循环式混炼机进行混炼，按原料配比分别称取电熔镁砂颗粒、电熔镁砂细粉、石墨、碳化硅和碳化硼、酚醛树脂和糠醛废液，首先将电熔镁砂颗粒放入混炼机中干混2min，然后加入酚醛树脂和糠醛废液继续混合15min，接着向其中加入石墨，混合5min，最后加入电熔镁砂细粉和碳化硅、碳化硼继续混合15min形成泥料，混炼机转速定为950r/min，混炼时间为60min；
(2)压制成型：将混炼完成的泥料加入模具中采用复合式真空摩擦压砖机进行压制成型制成砖坯，压力为2500KN；
(3)烘烤固化：将砖坯置于隧道式干燥窑中烘烤固化，烘烤温度为150℃，烘烤时间为20h。
实施例五：一种镁碳砖，包括组分按重量百分数计为：电熔镁砂颗粒75％，电熔镁砂细粉10％，石墨6.6％，碳化硼5％，酚醛树脂3％，糠醛废液0.4％。
镁碳砖的制备方法，包括如下步骤：
(1)混炼：采用旋移循环式混炼机进行混炼，按原料配比分别称取电熔镁砂颗粒、电熔镁砂细粉、石墨、碳化硼、酚醛树脂和糠醛废液，首先将电熔镁砂颗粒放入混炼机中干混15min，然后加入酚醛树脂和糠醛废液继续混合5min，接着向其中加入石墨，混合15min，最后加入电熔镁砂细粉和碳化硼继续混合8min形成泥料，混炼机转速定为1000r/min，混炼时间为10min；
(2)压制成型：将混炼完成的泥料加入模具中采用复合式真空摩擦压砖机进行压制成型制成砖坯，压力为6300KN；
(3)烘烤固化：将砖坯置于隧道式干燥窑中烘烤固化，烘烤温度为300℃，烘烤时间为10h。
对比例：与实例一中原料组分相同，将其中糠醛废液用酚醛树脂替换，按同样的制备方法制成不含糠醛废液的镁碳砖。
参照GB/T2997---2000、GB/T5072.2---2004、GB/T3001---2000、GB/T3002---2004、GB/T7320.1-2000检测对比例与实施例一制备的镁碳砖各项性能，包括显气孔率和体积密度、常温耐压强度、常温抗折强度、高温抗折强度和线膨胀率。
抗热震性试验：将实施例一和对比例中制备的镁碳砖进行抗热震性试验，制成40mm×40mm×160mm的试样，将试样加热到1100℃保温30min后，取出试样迅速放入室温水中急冷，重复以上过程至试样断裂，记录重复次数，以次数评价试样的抗热震性。
抗侵蚀性试验：将实施例一和对比例中制备的镁碳砖进行抗侵蚀性试验，制成坩埚试样尺寸内孔尺寸为采用静态抗侵蚀试验法，在坩埚试样内装填20g钢包渣，置于埋炭气氛下，于1500℃下保温3h，随炉冷却后将坩埚沿高度方向切开，测量坩埚中心截面的侵(渗透)面积S，计算其侵蚀指数S/S0×100％(S0为原坩埚中心孔的截面积)，以评价试样的抗侵蚀性。
各检测数据如下表1：
表1
项目 实施例一 对比例
体积密度(g/cm3) 3.11 3.11
显气孔率(％) 2.2 2.1
常温抗折强度(MPa) 9.24 9.02
常温耐压强度(MPa) 61.2 60.8
高温抗折强度(MPa) 8.04 7.84
抗热震性(次) 5 5
抗侵蚀指数(％) 11 12
线膨胀率(％) 0.12 0.13
由表1可知，同样条件下实施例一种添加糠醛废液的镁碳砖和对比例中不含糠醛废液的镁碳砖各项性能均相近，因此添加糠醛废液不会降低原有镁碳砖的抗热震性以及常温下的耐压和抗折强度等性能，添加糠醛废液能够降本增益。

Claims (7)

1.一种镁碳砖，其特征在于：包括组分按重量百分数计为：电熔镁砂颗粒60～75%，电熔镁砂细粉10～30%，碳素5～10%，抗氧化剂1～5%，结合剂1～3%，糠醛废液0.4～1%。
2.如权利要求1所述的镁碳砖，其特征在于：所述碳素为石墨，石墨的粒度为350～400目，石墨中碳含量大于94%。
3.如权利要求1所述的镁碳砖，其特征在于：所述电熔镁砂颗粒大小为1～5mm。
4.如权利要求1所述的镁碳砖，其特征在于：所述电熔镁砂细粉的粒度为300～350目。
5.如权利要求1所述的镁碳砖，其特征在于：所述抗氧化剂为铝粉、铝镁合金粉、金属硅粉、碳化硅或碳化硼中的一种或几种。
6.如权利要求1所述的镁碳砖，其特征在于：所述结合剂为酚醛树脂。
7.如权利要求1所述的镁碳砖的制备方法，其特征在于：包括如下步骤：
（1）混炼：采用旋移循环式混炼机进行混炼，按原料配比分别称取电熔镁砂颗粒、电熔镁砂细粉、碳素、抗氧化剂、结合剂和糠醛废液，首先将电熔镁砂颗粒放入混炼机中干混2～15min，然后加入酚醛树脂和糠醛废液继续混合5～15min，接着向其中加入碳素，混合5～15min，最后加入电熔镁砂细粉和抗氧化剂继续混合8～15min形成泥料，混炼机转速定为950～1000r/min，混炼时间为10～60min；
（2）压制成型：将混炼完成的泥料加入模具中采用复合式真空摩擦压砖机进行压制成型制成砖坯，压力为2500-6300KN；
（3）烘烤固化：将砖坯置于隧道式干燥窑中烘烤固化得到镁碳砖，烘烤温度为150～300℃，烘烤时间为10～20h。
CN201510967318.1A 2015-12-21 2015-12-21 一种镁碳砖及其制备方法 Active CN105503212B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510967318.1A CN105503212B (zh) 2015-12-21 2015-12-21 一种镁碳砖及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510967318.1A CN105503212B (zh) 2015-12-21 2015-12-21 一种镁碳砖及其制备方法

Publications (2)

Publication Number Publication Date
CN105503212A true CN105503212A (zh) 2016-04-20
CN105503212B CN105503212B (zh) 2018-07-20

Family

ID=55711591

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510967318.1A Active CN105503212B (zh) 2015-12-21 2015-12-21 一种镁碳砖及其制备方法

Country Status (1)

Country Link
CN (1) CN105503212B (zh)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106083089A (zh) * 2016-06-21 2016-11-09 湖南省涟源市合成耐火材料厂 一种高炉大坝料及其制备、筑坝方法
CN106145971A (zh) * 2016-06-30 2016-11-23 张刚 一种抗裂镁碳砖及其制备方法
CN106187225A (zh) * 2016-06-30 2016-12-07 张刚 一种抗侵蚀镁碳砖及其制备方法
CN106673680A (zh) * 2016-12-29 2017-05-17 江苏苏嘉集团新材料有限公司 一种镁碳砖及其制备方法
CN106673679A (zh) * 2016-12-28 2017-05-17 江苏苏嘉集团新材料有限公司 镁碳砖及其制备方法
CN106810210A (zh) * 2016-12-29 2017-06-09 江苏苏嘉集团新材料有限公司 提高抗氧化剂的镁碳砖及其制备方法
CN107244925A (zh) * 2017-04-05 2017-10-13 中国地质大学（北京） 一种葡萄糖结合镁碳砖的制备方法
CN108101559A (zh) * 2017-12-29 2018-06-01 江苏苏嘉集团新材料有限公司 镁碳砖及其制备方法
CN111348902A (zh) * 2019-07-04 2020-06-30 营口石兴耐火材料科技有限公司 一种改善低碳镁碳材料抗氧化性的方法
CN111908927A (zh) * 2020-06-17 2020-11-10 洛阳理工学院 一种改性的镁质不烧制品结合剂的制备方法和使用方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102127197A (zh) * 2010-12-01 2011-07-20 山东圣泉化工股份有限公司 镁碳砖用酚醛树脂的制备方法
CN102584277A (zh) * 2012-01-12 2012-07-18 武汉科技大学 一种低碳镁碳砖及其制备方法
CN103289618A (zh) * 2013-06-06 2013-09-11 江苏苏嘉集团新材料有限公司 复合改性抗氧化酚醛树脂结合剂及其制备方法
CN104478455A (zh) * 2014-12-24 2015-04-01 辽宁中镁控股股份有限公司 一种具有非氧化物增强增韧结构的低碳镁碳砖及其制备方法
CN104529491A (zh) * 2014-12-26 2015-04-22 江苏苏嘉集团新材料有限公司 不同碳含量复合的镁碳砖的制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102127197A (zh) * 2010-12-01 2011-07-20 山东圣泉化工股份有限公司 镁碳砖用酚醛树脂的制备方法
CN102584277A (zh) * 2012-01-12 2012-07-18 武汉科技大学 一种低碳镁碳砖及其制备方法
CN103289618A (zh) * 2013-06-06 2013-09-11 江苏苏嘉集团新材料有限公司 复合改性抗氧化酚醛树脂结合剂及其制备方法
CN104478455A (zh) * 2014-12-24 2015-04-01 辽宁中镁控股股份有限公司 一种具有非氧化物增强增韧结构的低碳镁碳砖及其制备方法
CN104529491A (zh) * 2014-12-26 2015-04-22 江苏苏嘉集团新材料有限公司 不同碳含量复合的镁碳砖的制备方法

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106083089B (zh) * 2016-06-21 2018-06-12 湖南省涟源市合成耐火材料厂 一种高炉大坝料及其制备、筑坝方法
CN106083089A (zh) * 2016-06-21 2016-11-09 湖南省涟源市合成耐火材料厂 一种高炉大坝料及其制备、筑坝方法
CN106145971A (zh) * 2016-06-30 2016-11-23 张刚 一种抗裂镁碳砖及其制备方法
CN106187225A (zh) * 2016-06-30 2016-12-07 张刚 一种抗侵蚀镁碳砖及其制备方法
CN106145971B (zh) * 2016-06-30 2019-06-04 常州苏耐冶金耐火材料有限公司 一种抗裂镁碳砖及其制备方法
CN106187225B (zh) * 2016-06-30 2018-10-30 长兴长恒耐火材料股份有限公司 一种抗侵蚀镁碳砖及其制备方法
CN106673679A (zh) * 2016-12-28 2017-05-17 江苏苏嘉集团新材料有限公司 镁碳砖及其制备方法
CN106673680A (zh) * 2016-12-29 2017-05-17 江苏苏嘉集团新材料有限公司 一种镁碳砖及其制备方法
CN106810210A (zh) * 2016-12-29 2017-06-09 江苏苏嘉集团新材料有限公司 提高抗氧化剂的镁碳砖及其制备方法
CN106673680B (zh) * 2016-12-29 2019-12-13 江苏苏嘉集团新材料有限公司 一种镁碳砖及其制备方法
CN107244925A (zh) * 2017-04-05 2017-10-13 中国地质大学（北京） 一种葡萄糖结合镁碳砖的制备方法
CN108101559A (zh) * 2017-12-29 2018-06-01 江苏苏嘉集团新材料有限公司 镁碳砖及其制备方法
CN111348902A (zh) * 2019-07-04 2020-06-30 营口石兴耐火材料科技有限公司 一种改善低碳镁碳材料抗氧化性的方法
CN111908927A (zh) * 2020-06-17 2020-11-10 洛阳理工学院 一种改性的镁质不烧制品结合剂的制备方法和使用方法

Also Published As

Publication number Publication date
CN105503212B (zh) 2018-07-20

Similar Documents

Publication Publication Date Title
CN105503212A (zh) 一种镁碳砖及其制备方法
CN101531533B (zh) 一种低碳镁碳砖及其制备方法
CN107352977A (zh) 一种钢包用渣线砖及制备方法
CN102898156B (zh) 一种钢包渣线镁碳砖及其制备方法
CN105523749A (zh) 一种镁硼砖及其制备方法
CN111333408A (zh) 一种再生镁铝碳质中间包干式料及其制备方法
CN104446529B (zh) 一种钢包渣线耐火砖
CN106810210A (zh) 提高抗氧化剂的镁碳砖及其制备方法
CN103880453B (zh) 连铸功能水口用材料及其制备方法
CN101747065A (zh) 一种镁碳砖及其制备方法
CN103539465A (zh) 一种高性能镁碳砖及其制备方法
CN105967702A (zh) 一种滑板砖及其制备方法
CN108395218A (zh) 一种利用改性镁砂制备的低碳镁碳砖及其制备方法
Fang et al. Improving the self-sintering of mesocarbon-microbeads for the manufacture of high performance graphite-parts
CN104446530B (zh) 一种钢包渣线耐火砖的制备工艺
CN107500748B (zh) 一种镁铝尖晶石-石墨烯耐火材料制品及其制备工艺
CN106673679A (zh) 镁碳砖及其制备方法
CN106083092A (zh) 一种抗钢渣渗透性较好的低成本中间包干式料及其制法
CN105272306A (zh) 一种耐火砖及耐火砖的制备方法
CN111925189A (zh) 一种复合镁碳砖及其制备方法
CN107602087A (zh) 一种耐火低碳镁碳砖
CN103524137A (zh) 一种炼钢转炉、钢包用镁碳砖及其制备方法
CN106673680A (zh) 一种镁碳砖及其制备方法
CN101823894A (zh) 免烘烤碳质捣打料及其制备方法
CN103613392A (zh) 一种rh真空炉内衬耐火材料及其制备方法与rh真空炉

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant