CN112745129B - 一种碳陶瓷挡渣背板的制作方法 - Google Patents

一种碳陶瓷挡渣背板的制作方法 Download PDF

Info

Publication number
CN112745129B
CN112745129B CN201911043750.6A CN201911043750A CN112745129B CN 112745129 B CN112745129 B CN 112745129B CN 201911043750 A CN201911043750 A CN 201911043750A CN 112745129 B CN112745129 B CN 112745129B
Authority
CN
China
Prior art keywords
particle
size
graphite
anthracite
semi
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
CN201911043750.6A
Other languages
English (en)
Other versions
CN112745129A (zh
Inventor
崔国伟
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.)
Jilin Carbon Co ltd
Original Assignee
Jilin Carbon 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 Jilin Carbon Co ltd filed Critical Jilin Carbon Co ltd
Priority to CN201911043750.6A priority Critical patent/CN112745129B/zh
Publication of CN112745129A publication Critical patent/CN112745129A/zh
Application granted granted Critical
Publication of CN112745129B publication Critical patent/CN112745129B/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
    • C04B35/66Monolithic refractories or refractory mortars, including those whether or not containing clay
    • 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
    • C04B35/515Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/528Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
    • C04B35/532Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
    • 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
    • C04B35/622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • 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
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/428Silicon
    • 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
    • C04B2235/9669Resistance against chemicals, e.g. against molten glass or molten salts
    • C04B2235/9676Resistance 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)
  • Inorganic Chemistry (AREA)
  • Ceramic Products (AREA)

Abstract

本发明是一种碳陶瓷挡渣背板的制作方法,原料配方采用半石墨质无烟煤作为基础原料,选择硅粉、氧化铝作为添加剂,中温沥青作为粘合剂,按照一定配比,经过原料破碎、筛分、混捏、压制、焙烧、机械切割的工艺步骤制成碳陶瓷挡渣背板,此种材料的挡渣背板极大提高了强度使之能够抵御出钢口钢渣的破坏的能力,在不影响其导热能力的条件下,大大提高了挡渣背板的抗钢渣侵蚀能力从而提高了挡渣背板整体寿命。

Description

一种碳陶瓷挡渣背板的制作方法
技术领域
本发明涉及到炭素耐火材料领域,特别是一种碳陶瓷挡渣背板的制作方法。
背景技术
偏心底电炉出钢口的开启和封闭是由挡渣板完成的,挡渣板是由水冷钢板加上用螺栓固定的石墨背板和液压系统组成的,其开启与关闭是由液压系统将挡渣背板推向出钢口或推移挡渣背板完成出钢口的封闭与敞开任务,以往的挡渣背板使用的是石墨板,石墨板导热系数高,有利于散热,但其抗弯强度较低(30MPa左右),当出钢口结渣,石墨板的抗弯强度与钢渣(抗弯强度为70MPa左右)相比强度低,因此石墨板经常发生破损或折断造成事故,而且石墨是多孔材料不抗钢渣侵蚀,钢渣侵蚀后强度导热指标都会严重下降,一般情况下石墨背板的损坏率在20-200炉,一旦石墨背板损坏,小则造成漏钢烫坏电缆大则发生爆炸危害生命。
因此,为了克服传统石墨背板强度低,寿命短,不抗钢渣侵蚀的弊端,需要一种新材料的挡渣背板,既能兼顾原石墨背板的良好的散热性能,还能够提高其整体强度和抗钢渣侵蚀的能力,从而提高挡渣背板的整体寿命。
发明内容
本发明的目的在于提供一种碳陶瓷挡渣背板的制作方法,替代原石墨背板,以解决现有技术中存在的不足。
为达到以上目的,提供以下技术方案:
一种碳陶瓷挡渣背板的制作方法,原料配方采用四种不同粒径的半石墨质无烟煤作为基础原料,选择硅粉、氧化铝粉作为添加剂,沥青作为粘合剂,按照一定配比,经过原料破碎、筛分、混捏、压制、焙烧、机械切割的工艺步骤制成;所述半石墨质无烟煤按粒径由大至小依次分为大粒径半石墨质无烟煤、中粒径半石墨质无烟煤、中小粒径半石墨质无烟煤、小粒径半石墨质无烟煤,其中大粒径半石墨质无烟煤的粒度为2mm-4mm,中粒径半石墨质无烟煤的粒度为1mm-2mm,中小粒径半石墨质无烟煤的粒度为0.075mm-1mm,小粒径半石墨质无烟煤的粒度为0.075mm;所述大粒径半石墨质无烟煤、中粒径半石墨质无烟煤、中小粒径半石墨质无烟煤、小粒径半石墨质无烟煤所加入量的配比依次为:大粒径半石墨质无烟煤19%±2%、中粒径半石墨质无烟煤19%±2%、中小粒径半石墨质无烟煤22%±2%、小粒径半石墨质无烟煤40%±2%;所述硅粉、氧化铝粉的粒度分别为400目、800目;所述硅粉的加入量为半石墨质无烟煤总量的12%-20%,氧化铝粉的加入量为半石墨质无烟煤总量的4%-8%,沥青的加入量为半石墨质无烟煤总量的18%-22%;所述焙烧的过程温度为1430℃-1450℃。
优选地,所述沥青为中温沥青。
本发明的有益效果为:
1.本发明提高了挡渣背板的抗弯强度与抗钢渣侵蚀的能力,从而提高了挡渣板的整体寿命,进而保障了人员与财产的安全。
2.本发明与原材质的挡渣背板相比,导热系数在同一数量级,不影响其导热效果。
具体实施方式
以下对本设计方案进行详细说明。
一种碳陶瓷挡渣背板的制作方法,原料配方采用四种不同粒径的半石墨质无烟煤作为基础原料,选择硅粉、氧化铝粉作为添加剂,沥青作为粘合剂,按照一定配比,经过原料破碎、筛分、混捏、压制、焙烧、机械切割的工艺步骤制成;半石墨质无烟煤按粒径由大至小依次分为大粒径半石墨质无烟煤、中粒径半石墨质无烟煤、中小粒径半石墨质无烟煤、小粒径半石墨质无烟煤,其中大粒径半石墨质无烟煤的粒度为2mm-4mm,中粒径半石墨质无烟煤的粒度为1mm-2mm,中小粒径半石墨质无烟煤的粒度为0.075mm-1mm,小粒径半石墨质无烟煤的粒度为0.075mm;大粒径半石墨质无烟煤、中粒径半石墨质无烟煤、中小粒径半石墨质无烟煤、小粒径半石墨质无烟煤所加入量的配比依次为:大粒径半石墨质无烟煤19%±2%、中粒径半石墨质无烟煤19%±2%、中小粒径半石墨质无烟煤22%±2%、小粒径半石墨质无烟煤40%±2%;硅粉、氧化铝粉的粒度分别为400目、800目,硅粉的加入量为半石墨质无烟煤总量的12%-20%,氧化铝粉的加入量为半石墨质无烟煤总量的4%-8%,沥青的加入量为半石墨质无烟煤总量的18%-22%;焙烧的过程温度为1430℃-1450℃。
其中,沥青为中温沥青。
其中,焙烧后的碳陶瓷板为整张板,按实际需要的挡渣背板尺寸进行机械切割。
实施例1
将半石墨质无烟煤放入球磨机中进行破碎,然后放入筛分机进行筛分,筛分出四种粒径的半石墨质无烟煤,即大粒径半石墨质无烟煤、中粒径半石墨质无烟煤、中小粒径半石墨质无烟煤、小粒径半石墨质无烟煤,其中大粒径半石墨质无烟煤的粒度为2mm,中粒径半石墨质无烟煤的粒度为1mm,中小粒径半石墨质无烟煤的粒度为0.075mm,小粒径半石墨质无烟煤的粒度为0.075mm,将这四种粒径的半石墨质无烟煤与粒度为400目的硅粉、800目的氧化铝粉和中温沥青用搅拌机进行混捏,其中,硅粉与氧化铝粉作为添加剂,中温沥青作为粘合剂,混捏时填入的各项物料的配比为:大粒径半石墨质无烟煤17%、中粒径半石墨质无烟煤17%、中小粒径半石墨质无烟煤24%、小粒径半石墨质无烟煤42%,硅粉的加入量为半石墨质无烟煤总量的12%,氧化铝粉的加入量为半石墨质无烟煤总量的4%,沥青的加入量为半石墨质无烟煤总量的18%,混捏后用吨压机将物料按所需厚度压制成板,然后在焙烧炉内进行焙烧,焙烧的过程温度为1430℃,焙烧时间为342小时,焙烧后的碳陶瓷板为整张板,按实际需要的挡渣背板尺寸进行机械切割,即为碳陶瓷挡渣背板。
实施例2
将半石墨质无烟煤放入球磨机中进行破碎,然后放入筛分机进行筛分,筛分出四种粒径的半石墨质无烟煤,即大粒径半石墨质无烟煤、中粒径半石墨质无烟煤、中小粒径半石墨质无烟煤、小粒径半石墨质无烟煤,其中大粒径半石墨质无烟煤的粒度为3mm,中粒径半石墨质无烟煤的粒度为1.5mm,中小粒径半石墨质无烟煤的粒度为0.5375mm,小粒径半石墨质无烟煤的粒度为0.075mm,将这四种粒径的半石墨质无烟煤与粒度为400目的硅粉、800目的氧化铝粉和中温沥青用搅拌机进行混捏,其中,硅粉与氧化铝粉作为添加剂,中温沥青作为粘合剂,混捏时填入的各项物料的配比为:大粒径半石墨质无烟煤19%、中粒径半石墨质无烟煤19%、中小粒径半石墨质无烟煤22%、小粒径半石墨质无烟煤40%,硅粉的加入量为半石墨质无烟煤总量的16%,氧化铝粉的加入量为半石墨质无烟煤总量的6%,沥青的加入量为半石墨质无烟煤总量的20%,混捏后用吨压机将物料按所需厚度进行压制成板,然后在焙烧炉内进行焙烧,焙烧的过程温度为1440℃,焙烧时间为342小时,焙烧后的碳陶瓷板为整张板,按实际需要的挡渣背板尺寸进行机械切割,即为碳陶瓷挡渣背板。
实施例3
将半石墨质无烟煤放入球磨机中进行破碎,然后放入筛分机进行筛分,筛分出四种粒径的半石墨质无烟煤,即大粒径半石墨质无烟煤、中粒径半石墨质无烟煤、中小粒径半石墨质无烟煤、小粒径半石墨质无烟煤,其中大粒径半石墨质无烟煤的粒度为4mm,中粒径半石墨质无烟煤的粒度为2mm,中小粒径半石墨质无烟煤的粒度为1mm,小粒径半石墨质无烟煤的粒度为0.075mm,将这四种粒径的半石墨质无烟煤与粒度为400目的硅粉、800目的氧化铝粉和中温沥青用搅拌机进行混捏,其中,硅粉与氧化铝粉作为添加剂,中温沥青作为粘合剂,混捏时填入的各项物料的配比为:大粒径半石墨质无烟煤21%、中粒径半石墨质无烟煤21%、中小粒径半石墨质无烟煤20%、小粒径半石墨质无烟煤38%,硅粉的加入量为半石墨质无烟煤总量的20%,氧化铝粉的加入量为半石墨质无烟煤总量的8%,沥青的加入量为半石墨质无烟煤总量的22%,混捏后用吨压机将物料按所需厚度进行压制成板,然后在焙烧炉内进行焙烧,焙烧的过程温度为1450℃,焙烧时间为342小时,焙烧后的碳陶瓷板为整张板,按实际需要的挡渣背板尺寸进行机械切割,即为碳陶瓷挡渣背板。

Claims (2)

1.一种碳陶瓷挡渣背板的制作方法,其特征在于,原料配方采用四种不同粒径的半石墨质无烟煤作为基础原料,选择硅粉、氧化铝粉作为添加剂,沥青作为粘合剂,按照一定配比,经过原料破碎、筛分、混捏、压制、焙烧、机械切割的工艺步骤制成;所述半石墨质无烟煤按粒径由大至小依次分为大粒径半石墨质无烟煤、中粒径半石墨质无烟煤、中小粒径半石墨质无烟煤、小粒径半石墨质无烟煤,其中大粒径半石墨质无烟煤的粒度为2mm-4mm,中粒径半石墨质无烟煤的粒度为1mm-2mm,中小粒径半石墨质无烟煤的粒度为0.075mm-1mm,小粒径半石墨质无烟煤的粒度为0.075mm;所述大粒径半石墨质无烟煤、中粒径半石墨质无烟煤、中小粒径半石墨质无烟煤、小粒径半石墨质无烟煤所加入量的配比依次为:大粒径半石墨质无烟煤19%±2%、中粒径半石墨质无烟煤19%±2%、中小粒径半石墨质无烟煤22%±2%、小粒径半石墨质无烟煤40%±2%;所述硅粉、氧化铝粉的粒度分别为400目、800目;所述硅粉的加入量为半石墨质无烟煤总量的12%-20%,氧化铝粉的加入量为半石墨质无烟煤总量的4%-8%,沥青的加入量为半石墨质无烟煤总量的18%-22%;所述焙烧的过程温度为1430℃-1450℃。
2.根据权利要求1所述的一种碳陶瓷挡渣背板的制作方法,其特征在于,所述沥青为中温沥青。
CN201911043750.6A 2019-10-30 2019-10-30 一种碳陶瓷挡渣背板的制作方法 Active CN112745129B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911043750.6A CN112745129B (zh) 2019-10-30 2019-10-30 一种碳陶瓷挡渣背板的制作方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911043750.6A CN112745129B (zh) 2019-10-30 2019-10-30 一种碳陶瓷挡渣背板的制作方法

Publications (2)

Publication Number Publication Date
CN112745129A CN112745129A (zh) 2021-05-04
CN112745129B true CN112745129B (zh) 2023-04-07

Family

ID=75641752

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911043750.6A Active CN112745129B (zh) 2019-10-30 2019-10-30 一种碳陶瓷挡渣背板的制作方法

Country Status (1)

Country Link
CN (1) CN112745129B (zh)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998041487A1 (fr) * 1997-03-14 1998-09-24 Societe Des Terres Refractaires Du Boulonnais Composition de masse refractaire carbonee
CN1485464A (zh) * 2003-09-02 2004-03-31 中国铝业股份有限公司 一种铝电解槽用阴极炭块的生产方法
CN102040384A (zh) * 2009-10-19 2011-05-04 李健伟 高导高抗蚀超微孔炭块
CN102992805A (zh) * 2012-11-27 2013-03-27 方大炭素新材料科技股份有限公司 一种高导热超微孔炭砖及其制备方法
CN103864048A (zh) * 2014-01-26 2014-06-18 宁夏永威炭业有限责任公司 采用半石墨化无烟煤制备大规格高功率炭电极的方法
WO2016202164A1 (zh) * 2015-06-17 2016-12-22 田东 一种炭/石墨/锡复合负极材料的制备方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998041487A1 (fr) * 1997-03-14 1998-09-24 Societe Des Terres Refractaires Du Boulonnais Composition de masse refractaire carbonee
CN1485464A (zh) * 2003-09-02 2004-03-31 中国铝业股份有限公司 一种铝电解槽用阴极炭块的生产方法
CN102040384A (zh) * 2009-10-19 2011-05-04 李健伟 高导高抗蚀超微孔炭块
CN102992805A (zh) * 2012-11-27 2013-03-27 方大炭素新材料科技股份有限公司 一种高导热超微孔炭砖及其制备方法
CN103864048A (zh) * 2014-01-26 2014-06-18 宁夏永威炭业有限责任公司 采用半石墨化无烟煤制备大规格高功率炭电极的方法
WO2016202164A1 (zh) * 2015-06-17 2016-12-22 田东 一种炭/石墨/锡复合负极材料的制备方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
我国阴极炭素材料发展中的若干问题;廖贤安等;《轻金属》;20041120;第6-8页 *
铝电解槽用无烟煤基石墨化阴极材料的初步研究;李永军等;《炭素技术》;20060630(第03期);第2-6页 *
高炉用半石墨质低气孔率自焙碳块的开发应用;陈文;《钢铁》;19970115;第18页-19页第3.1-3.2节、第20页表3和第3.3节 *

Also Published As

Publication number Publication date
CN112745129A (zh) 2021-05-04

Similar Documents

Publication Publication Date Title
CN107235728B (zh) 一种预焙阳极节能生产的工艺
CN102101664B (zh) 高强高石墨质炭电极及其制备方法
CN102010202A (zh) 一种制备电解铝用冷捣糊的方法
CN103952721B (zh) 一种兰炭基铝电解用炭素阳极及其制备方法
CN109778236B (zh) 一种电解铝用预焙阳极
CN113603488A (zh) 一种新型环保阳极炭块的生产方法
CN1603390A (zh) 具有优良强度的煤饼及其制饼方法
CN114213127A (zh) 一种石墨坩埚的制备方法
CN103601173A (zh) 采用压球工艺生产炭素制品的方法
CN105347825A (zh) 一种高强度低电阻常温冷捣糊的制备方法
CN101591190B (zh) 一种铝电解槽侧墙用新型Si3N4-SiC-C耐火砖及其制备方法
CN112745129B (zh) 一种碳陶瓷挡渣背板的制作方法
CN100357411C (zh) 焦炭粉粒的粘结成球方法
CN114349512A (zh) 铝电解用低炭渣预焙阳极制备方法
CN104193372A (zh) 一种高强耐碱浇注料及其制备方法
CN110511000A (zh) 一种rh炉上部槽用方镁石-铬刚玉砖及其制备方法
CN105655003A (zh) 一种改性电极糊及其制备方法
CN101020960B (zh) 一种用于冶炼铝硅合金的球团及其制备方法
CN101696364A (zh) 以焦炭碎末制造冶金块焦的粘结剂及其制备方法
CN101255571A (zh) 一种制备铝电解用预焙炭阳极石油焦的处理方法
CN101343582B (zh) 一种采用压球工艺生产型焦炭的方法
CN103449826A (zh) 一种窑炉修补用喷补料的制备方法
CN110423100A (zh) 一种添加镁碳超细粉的高纯镁碳砖及其制备方法
CN113658740B (zh) 一种新型炭复合材料及电极糊的制备方法
CN102424586A (zh) 一种SiC耐火原料粉体的制备方法

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
GR01 Patent grant
GR01 Patent grant