CN107337439B - 一种含多晶氧化铝纤维的镁质干式料 - Google Patents

一种含多晶氧化铝纤维的镁质干式料 Download PDF

Info

Publication number
CN107337439B
CN107337439B CN201710616831.5A CN201710616831A CN107337439B CN 107337439 B CN107337439 B CN 107337439B CN 201710616831 A CN201710616831 A CN 201710616831A CN 107337439 B CN107337439 B CN 107337439B
Authority
CN
China
Prior art keywords
polycrystalline alumina
alumina fiber
magnesia
magnesium dry
dry material
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
CN201710616831.5A
Other languages
English (en)
Other versions
CN107337439A (zh
Inventor
肖家志
张三华
梁亚丽
石干
韦祎
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.)
Sinosteel Luoyang Institute of Refractories Research Co Ltd
Original Assignee
Sinosteel Luoyang Institute of Refractories Research 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 Sinosteel Luoyang Institute of Refractories Research Co Ltd filed Critical Sinosteel Luoyang Institute of Refractories Research Co Ltd
Priority to CN201710616831.5A priority Critical patent/CN107337439B/zh
Publication of CN107337439A publication Critical patent/CN107337439A/zh
Application granted granted Critical
Publication of CN107337439B publication Critical patent/CN107337439B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/03Shaped 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
    • C04B35/04Shaped 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
    • C04B35/043Refractories from grain sized mixtures
    • C04B35/803
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/52Constituents or additives characterised by their shapes
    • C04B2235/5208Fibers
    • C04B2235/5216Inorganic
    • C04B2235/522Oxidic
    • C04B2235/5224Alumina or aluminates
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74Physical characteristics
    • C04B2235/77Density
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance

Landscapes

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

Abstract

本发明属于耐火材料技术领域,主要涉及一种含多晶氧化铝纤维的镁质干式料。提出的一种含多晶氧化铝纤维的镁质干式料的原料组成及质量百分比为:镁砂颗粒65~78%;镁砂细粉15~25%;氧化铝微粉0~8%;多晶氧化铝纤维1~9%;其中,所述的多晶氧化铝纤维为起助烧结作用的助烧结剂。本发明既降低了烧结温度,又保证了镁质干式料的使用性能,提高了衬体的使用寿命。

Description

一种含多晶氧化铝纤维的镁质干式料
技术领域
本发明属于耐火材料技术领域,主要涉及一种含多晶氧化铝纤维的镁质干式料。
背景技术
耐火材料中加入助烧结剂的目的是为了提高材料在高温下的致密性、强度和稳定性,以适应冶炼条件的需要;常规的助烧结剂作用机理是在高温下使颗粒的接触面出现液相,融合形成连续的网络,使整个材料连成一个整体。一般液相的出现可能是助烧结剂本身的熔点低,也可能是与助烧结剂形成低共熔物,但都会降低耐火材料的使用温度,影响高温下材料的使用寿命。为了满足高温苛刻条件下耐火材料的使用性能(致密性、高强度、高荷软等),使材料高温下融合形成一个整体,减少或消除由助烧结剂带入的杂质成分形成的危害,目前常用的方式是采用纳米技术。纳米技术的应用,可以降低耐火材料的烧结温度,使材料的结构微细化、致密化,提高材料的性能,但纳米粉存在易团聚,难分散,成本高等缺点,难以工业化大规模应用。
发明内容
本发明的目的是一种含多晶氧化铝纤维的镁质干式料,使其能促进镁质干式料的烧结,同时减少助烧结剂的危害。
本发明为完成上述目的采用如下技术方案:
一种含多晶氧化铝纤维的镁质干式料,所述的镁质干式料的原料组成及质量百分比为:
镁砂颗粒 65~78%;
镁砂细粉 15~25%;
氧化铝微粉 0~8%;
多晶氧化铝纤维 1~9%;
其中,所述的多晶氧化铝纤维为起助烧结作用的助烧结剂;将镁砂颗粒、镁砂细粉、氧化铝微粉和多晶氧化铝纤维混合均匀即制得含多晶氧化铝纤维的镁质干式料。
所述的镁质干式料的原料组成及质量百分比为:
镁砂颗粒 70~72%;
镁砂细粉 18~20%;
氧化铝微粉 0~8%;
多晶氧化铝纤维 1~9%。
所述镁砂颗粒的粒径范围为0.044-5mm。
所述的镁砂颗粒为电熔镁砂、烧结镁砂中的一种。
所述的氧化铝微粉为粒径d50<5μm的煅烧氧化铝微粉。
所述的多晶氧化铝纤维粒径为0.3~8μm,化学成分w(Al2O3+SiO2)>99%,w(Al2O3)>95.0%。
本发明提出的一种含多晶氧化铝纤维的镁质干式料,多晶氧化铝纤维具有优异的高温性能,良好的节能效果,应用在耐火材料高温领域具有可观的经济效益,但纤维的稳定性差,易析晶粉化,对材料的性能不利,应用受限;本发明恰好利用纤维易析晶粉化的特性,对多晶氧化铝纤维进行改造处理,将其运用在刚玉质干式料中,起到助烧结的作用;通过利用多晶氧化铝纤维易析晶粉化特性,既降低了烧结温度,又保证了镁质干式料的使用性能,提高了衬体的使用寿命。
具体实施方式
本发明以工频炉用镁质干式料为例,对多晶氧化铝纤维的应用效果加以说明。为充分说明本发明的特点,以实施例1~7为例,与不加助烧结剂的对比例1和加硼酸为助烧结剂的对比例2、3比较,加以说明。
实施例1~7
含多晶氧化铝纤维的镁质干式料实施例1~7,以0.044-6mm的电熔镁砂(w(MgO)=97.87%、w(SiO2)=0.76%、w(CaO)=0.73%)为主料,以煅烧氧化铝微粉(w(Al2O3)=99.34%、w(SiO2)=0.14%、d50<5μm)和多晶氧化铝纤维(w(Al2O3)>95.0%、w(SiO2)<4.0%、粒度0.3~8μm)为辅料组成。具体方案见表1。
通过表2的性能测试结果可知,与对比例1相比,实施例1~7中镁质干式料的低融物减少,随着温度的升高,各项指标都得到了优化,虽然对比例2中干式料的性能也有改善,随着温度的提高,高温性能却逐渐下降,对比例3中干式料的荷重软化温度T0.6急剧下降。由于干式料在混料和成形过程中,容易发生偏析,而常规助烧结剂的加入对材料的影响巨大,一旦偏析造成助烧结剂的局部集中,对衬体的影响是致命的,因此,硼酸的引入需要很谨慎,要控制在合适的范围内。总之,消除助烧结剂的不利影响具有重要意义,而本发明所述的含多晶氧化铝纤维的镁质干式料则可以避免此不利影响。
表1 实施例和对比例的组分和具体配比方案
Figure DEST_PATH_IMAGE001
表2 实施例和对比例干式料的性能指标
Figure 747823DEST_PATH_IMAGE002
注:A代表1200℃*3h,B代表1350℃*3h,C代表1600℃*3h, D代表1500℃*3h。

Claims (6)

1.一种含多晶氧化铝纤维的镁质干式料,其特征在于:所述的镁质干式料的原料组成及质量百分比为:
镁砂颗粒 65~78%;
镁砂细粉 15~25%;
氧化铝微粉 0~8%;
多晶氧化铝纤维 1~9%;
其中,所述的多晶氧化铝纤维为起助烧结作用的助烧结剂;将镁砂颗粒、镁砂细粉、氧化铝微粉和多晶氧化铝纤维混合均匀即制得含多晶氧化铝纤维的镁质干式料。
2.如权利要求1所述的一种含多晶氧化铝纤维的镁质干式料,其特征在于:所述的镁质干式料的原料组成及质量百分比为:
镁砂颗粒 70~72%;
镁砂细粉 18~20%;
氧化铝微粉 0~8%;
多晶氧化铝纤维 1~9%。
3.如权利要求1所述的一种含多晶氧化铝纤维的镁质干式料,其特征在于:所述镁砂颗粒的粒径范围为0.044-5mm。
4.如权利要求1所述的一种含多晶氧化铝纤维的镁质干式料,其特征在于:所述的镁砂颗粒为电熔镁砂、烧结镁砂中的一种。
5.如权利要求1所述的一种含多晶氧化铝纤维的镁质干式料,其特征在于:所述的氧化铝微粉为粒径d50<5μm的煅烧氧化铝微粉。
6.如权利要求1所述的一种含多晶氧化铝纤维的镁质干式料,其特征在于:所述的多晶氧化铝纤维粒径为0.3~8μm,化学成分w(Al2O3+SiO2)>99%,w(Al2O3)>95.0%。
CN201710616831.5A 2017-07-26 2017-07-26 一种含多晶氧化铝纤维的镁质干式料 Active CN107337439B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710616831.5A CN107337439B (zh) 2017-07-26 2017-07-26 一种含多晶氧化铝纤维的镁质干式料

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710616831.5A CN107337439B (zh) 2017-07-26 2017-07-26 一种含多晶氧化铝纤维的镁质干式料

Publications (2)

Publication Number Publication Date
CN107337439A CN107337439A (zh) 2017-11-10
CN107337439B true CN107337439B (zh) 2020-06-19

Family

ID=60216112

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710616831.5A Active CN107337439B (zh) 2017-07-26 2017-07-26 一种含多晶氧化铝纤维的镁质干式料

Country Status (1)

Country Link
CN (1) CN107337439B (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109369156B (zh) * 2018-10-29 2021-07-06 武汉科技大学 一种基于盐湖卤水的镁砂骨料及其制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104084574A (zh) * 2014-07-14 2014-10-08 浙江铭德新材科技有限公司 一种新型环保型中间包工作衬及其成型方法
CN105985120A (zh) * 2015-02-04 2016-10-05 攀钢冶金材料有限责任公司 一种转炉的修补料及其制备方法
CN106187122A (zh) * 2016-06-29 2016-12-07 焦作金鑫恒拓新材料股份有限公司 一种中频熔铝炉炉衬干式料
CN106278316A (zh) * 2016-08-15 2017-01-04 长兴明晟冶金炉料有限公司 一种连铸中间包干式捣打料

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104084574A (zh) * 2014-07-14 2014-10-08 浙江铭德新材科技有限公司 一种新型环保型中间包工作衬及其成型方法
CN105985120A (zh) * 2015-02-04 2016-10-05 攀钢冶金材料有限责任公司 一种转炉的修补料及其制备方法
CN106187122A (zh) * 2016-06-29 2016-12-07 焦作金鑫恒拓新材料股份有限公司 一种中频熔铝炉炉衬干式料
CN106278316A (zh) * 2016-08-15 2017-01-04 长兴明晟冶金炉料有限公司 一种连铸中间包干式捣打料

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
纳米Al2O3对3Y-ZrO2陶瓷性能的影响;陈涵等;《中国陶瓷》;20071130;第43卷(第11期);23-25 *
镁质中间包工作衬的研制与影响因素分析;贾江议等;《河南冶金》;20100430;第18卷(第2期);24-26 *

Also Published As

Publication number Publication date
CN107337439A (zh) 2017-11-10

Similar Documents

Publication Publication Date Title
CN107200596B (zh) 一种含多晶氧化铝纤维的刚玉质干式料
CN111620679B (zh) 一种以熔融二氧化硅为硅源制备高纯莫来石材料的方法
CN107311677B (zh) 一种钛铝酸钙-莫来石复相耐火材料及其制备方法
CN107805058B (zh) 一种钢包用刚玉质包底砖及其制备方法
CN107935575B (zh) 高纯低蠕变电熔莫来石砖及其制备方法
CN101811880A (zh) 一种无碳耐火砖及其制备方法
CN116332631B (zh) 一种铬铝镁锆耐火砖及其制备方法
CN112142447B (zh) 一种高性能节能型镁基原料及其制备方法
CN113072364A (zh) 一种轻量化高炉摆动溜槽用耐火浇注料及其制备方法
CN109369181B (zh) 一种体积稳定的高纯氧化锆耐火制品
CN104788083B (zh) 一种多晶硅还原炉用高抗热震性氧化铝陶瓷环及制备方法
CN108439961B (zh) 一种致密高纯六铝酸钙-刚玉复相材料的制备方法
CN111704474A (zh) 一种超高温冶炼用莫来石质耐火浇注料
CN112830772A (zh) 一种亚微米二氧化硅微粉结合铁沟浇注料及其制备方法
CN113277852A (zh) 一种堇青石基微晶玻璃结合碳化硅陶瓷材料及其制备方法
CN107337439B (zh) 一种含多晶氧化铝纤维的镁质干式料
CN107216159B (zh) 一种含石英纤维的硅质干式料
CN113321495A (zh) 一种无水泥高性能泵送炉缸料
CN112094125B (zh) 一种低导热低热膨胀镁基原料及其制备方法
KR101866319B1 (ko) 고밀도 슬립-캐스트 용융 실리카 바디 제조방법
CN113956024B (zh) 一种抗热震复相陶瓷材料
CN114057477B (zh) 一种干法制备得到的多孔硅酸锆及其制备方法
CN106810283B (zh) 一种莫来石-铬轻质浇注料
CN114394842A (zh) 一种烧结的致密高锆砖的制备方法
CN115010504B (zh) 一种两步法制备高强矾土基莫来石均质料的方法

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

Inventor after: Xiao Jiazhi

Inventor after: Zhang Sanhua

Inventor after: Liang Yali

Inventor after: Shi Gan

Inventor after: Wei Dai

Inventor before: Xiao Jiazhi

Inventor before: Zhang Sanhua

Inventor before: Liang Yali

Inventor before: Shi Gan

Inventor before: Wei Xiao

CB03 Change of inventor or designer information
GR01 Patent grant
GR01 Patent grant