CN113603461B - 一种rh高附着率喷补料及其制备方法 - Google Patents

一种rh高附着率喷补料及其制备方法 Download PDF

Info

Publication number
CN113603461B
CN113603461B CN202110678806.6A CN202110678806A CN113603461B CN 113603461 B CN113603461 B CN 113603461B CN 202110678806 A CN202110678806 A CN 202110678806A CN 113603461 B CN113603461 B CN 113603461B
Authority
CN
China
Prior art keywords
particles
gunning
diameter
adhesion
magnesia
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
CN202110678806.6A
Other languages
English (en)
Other versions
CN113603461A (zh
Inventor
刘孟
张剑君
万菲
彭著刚
叶途明
秦世民
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.)
Wuhan Iron and Steel Co Ltd
Original Assignee
Wuhan Iron and Steel 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 Wuhan Iron and Steel Co Ltd filed Critical Wuhan Iron and Steel Co Ltd
Priority to CN202110678806.6A priority Critical patent/CN113603461B/zh
Publication of CN113603461A publication Critical patent/CN113603461A/zh
Application granted granted Critical
Publication of CN113603461B publication Critical patent/CN113603461B/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
    • C04B35/01—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
    • C04B35/047—Refractories from grain sized mixtures containing chromium oxide or chrome ore
    • 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
    • C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
    • 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
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
    • 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
    • C04B2235/02—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
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • 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
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • 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
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
    • 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
    • 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
    • C04B2235/428—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
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/52—Constituents or additives characterised by their shapes
    • C04B2235/5208—Fibers
    • C04B2235/5216—Inorganic
    • 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
    • C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
    • 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
    • C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
    • C04B2235/9615—Linear firing shrinkage
    • 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
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

本发明公开了一种RH高附着率喷补料，其特征在于，各组分及其所占质量百分比包括：废旧镁铬砖回收料30～60％，烧结镁砂20～45％，镁白云石砂10～30％，镁钙砂5～20％，微粉1～6％，添加物1～5％，防爆纤维0.01～0.1％，补强纤维0.5～2％，复合结合剂0.5～4％，溶胶0.5～2％；其中添加物为硅线石、红柱石、蓝晶石、锆英石中的一种或几种；复合结合剂为Ca(OH)2、Mg(OH)2、磷酸盐、聚磷酸盐中的两种以上。本发明所述喷补料具有附着率高、回弹小等优点，使用后可延长浸渍管的使用寿命、减小喷补次数和喷补料消耗的特点；且涉及的制备方法较简单，适合推广应用。

Description

一种RH高附着率喷补料及其制备方法
技术领域
本发明属于耐火材料技术领域，具体涉及一种RH高附着率喷补料及其制备方法。
背景技术
RH真空循环脱气法精炼技术于1957年由Ruhrstahl公司和海拉斯公司(Heraeus)联合开发成功，故简称RH法。上世纪80年代后，RH装置数量增长很快，功能已由主要用于脱氢转向主要用于深脱碳和脱氧、去除夹杂物等多功能炉外精炼设备。RH精炼炉在使用过程中要经受长时间气流和钢液的高速冲刷，工作条件非常恶劣，而在组成RH炉的所有设备中，长期浸泡在钢水之中的浸溃管的工作条件最为恶劣。浸渍管不但内壁受到高速气流和钢液的冲刷，而且外壁受熔渣的侵蚀和急冷急热的作用。同时，浸溃管外壁粘渣清理时的机械损伤、浇注料与浸渍管形芯钢板受热后的热膨胀系数不匹配等多种因素均制约着它们的寿命，综合因素使浸渍管成为RH精炼设备中最薄弱的环节。因此，如何提高RH炉浸渍管的使用寿命一直受到业内人士的广泛关注和重视。
在现场操作过程中，通常采用后喷补耐火材料的方式来延长RH炉浸渍管的使用寿命。专利CN101367659A公开了一种高性能冶炼硅钢用镁钙质RH浸渍管热喷补料，以高纯镁砂和合成镁钙砂为主要组成，复合使用木质磺酸钙、改性淀粉醚等有机添加剂取代常规喷补料所使用的软质粘土和水玻璃等低熔有害的增塑剂，以实现喷补料良好的喷补附着性和良好的高温性能；CN102659432A公开了一种新型RH喷补料，采用电熔镁砂粗粉、细粉以及铬矿砂为主要原料，配合添加消石灰、轻质碳酸钙、六偏磷酸钠、硼砂、硅微粉、三聚磷酸钠以及羧甲基纤维素，可显著延长RH插入管的使用寿命；CN108610062A公开了一种镁钙质耐火材料喷补料，以镁砂、石灰石以及生石灰粉为主要原料，辅助添加氧化钛粉、磷酸二氢钠、六偏磷酸钠、羧甲基纤维素钠等结合剂，具有较高的高温强度和快速凝结的性能，可应用于转炉、电炉以及RH精炼炉易冲刷部位。然而，上述报道的喷补料虽在性能上略有提升，但在喷补料附着率方面普遍不高，喷补料消耗量大(通过现场实施过程中喷补回弹情况以及单炉喷补料消耗量判断附着率和消耗情况判定)，造成大量的回弹和浪费。因此，研究和开发高附着率的RH精炼炉浸渍管用喷补料对于节省耐火材料消耗，延长浸渍管寿命具有重要的意义。
发明内容
本发明的目的是提供一种RH高附着率喷补料及其制备方法，该喷补料具有附着率高、回弹小等优点，使用后可延长浸渍管的使用寿命、减小喷补次数和喷补料消耗的特点，且涉及的制备方法较简单，适合推广应用。
为了实现上述目的，本发明采用的技术方案为：
一种RH高附着率喷补料，各组分及其所占质量百分比包括：废旧镁铬砖回收料30～60％，烧结镁砂20～45％，镁白云石砂10～30％，镁钙砂5～20％，微粉1～6％，添加物1～5％，防爆纤维0.01～0.1％，补强纤维0.5～2％，复合结合剂0.5～4％，溶胶0.5～2％；其中添加物为硅线石、红柱石、蓝晶石、锆英石中的一种或几种；复合结合剂为Ca(OH)2、Mg(OH)2、磷酸盐(磷酸一氢铝或磷酸二氢铝)、聚磷酸盐(三聚磷酸钠或六偏磷酸钠)中的两种以上。
上述方案中，所述废旧镁铬砖回收料中不同粒径颗粒及其所占质量百分比包括：3-1mm颗粒15-35％，1-0.5mm颗粒20-35％，0.5-0.088mm颗粒15-25％，小于0.088mm颗粒10-30％。
上述方案中，所述废旧镁铬砖回收料通过拣选、除铁、破损筛分以及化学分析等方式进行分类回收，其中MgO＞85wt％，Cr2O3>5wt％。
上述方案中，所述烧结镁砂中不同粒径颗粒及其所占质量百分比包括：3-1mm颗粒15-35％，1-0.5mm颗粒20-35％，0.5-0.088mm颗粒15-25％，小于0.088mm颗粒10-30％；MgO>92wt％。
上述方案中，所述镁白云石砂中不同粒径颗粒及其所占质量百分比包括：1-0.5mm颗粒30-50％，0.5-0.088mm颗粒15-35％，小于0.088mm颗粒20-40％；MgO>60wt％，CaO>15wt％。
上述方案中，所述镁钙砂中不同粒径颗粒及其所占质量百分比包括：1-0.5mm颗粒30-50％，0.5-0.088mm颗粒15-35％，小于0.088mm颗粒20-40％；其中CaO>20wt％，Mg>65wt％。
上述方案中，所述微粉为氧化铝、氧化硅、ZrO2、MgO、SiC中的一种或几种，平均粒径为0.05～0.2μm。
上述方案中，所述添加物的平均粒径为0.5～0.088mm。
上述方案中，所述防爆纤维的直径为0.1～10μm，长度为1～5mm；可选用聚乙烯纤维、聚丙烯纤维、聚酯纤维中的一种或几种。
上述方案中，所述补强纤维为直径0.1～1mm、长5～30mm的金属纤维(可选用普通钢纤维、耐热钢纤维等)。
上述方案中，所述溶胶为硅溶胶、铝溶胶或硅铝溶胶中的一种或几种。
上述一种RH高附着率喷补料的制备方法，包括如下步骤：
1)按配比称取各原料；
2)喷补料的制备，将原料按照预设的配比进行称量选取配料，采用混料机对其进行混合，混合过程中，先加骨料混合30min～2h，然后逐渐加入细粉、添加物、防爆剂，补强纤维、复合结合剂以及溶胶再混合1h～10h，混匀后的喷补料装袋抽真空待用。
上述方案中，步骤1)中所述骨料混合时间为30min～2h。
上述方案中，步骤1)中所述混合时间为1～10h。
优选的，步骤1)中所得混合料进行装袋抽真空待用。
上述方案中，按照耐火材料性能检测标准进行制样和烧结检测最终喷补料的性能。
根据上述方案所得RH高附着率喷补料，其1500℃烧后体积密度为2.3～2.7g/cm3，1500℃烧后抗折强度为5～15MPa，1500℃烧后线变化率-3～3％，1200℃高温抗折强度0.8～2.5MPa，喷补一次可使用3～6炉，附着率可达85～92％。
本发明的原理为：
本发明选择废旧镁铬砖回收料和烧结镁砂为主要原料，不仅可节省大量资源，由于二者主晶相中方镁石晶粒的存在，可充分保证喷补料在高温下的耐火度，同时，废旧镁铬砖中少量铬元素的存在可形成镁铬尖晶石，大幅提高喷补料的抗侵蚀性能；
镁白云石砂和镁钙砂的引入，一方面通过引入CaO进一步提高喷补料的抗侵蚀性能，同时，CaO、MgO以及SiO2在高温下还可反应生成高熔点物相，进一步提高喷补料的结合强度，有助于提高喷补时的附着率，并大大延长喷补料的使用寿命；同时红柱石等添加物在高温下的微膨胀效应可抵消喷补料高温下的烧结收缩，从而消除喷补层因开裂而产生的剥落现象，进一步提高喷补料的附着率；
微粉的加入不仅可提高喷补料在喷补过程中的流动性，同时，高温下与主料反应形成高熔点的晶间结合相，提高喷补料的高温强度；
防爆纤维的加入可在喷补料内部熔化形成排气通道，有利于结合剂中水分蒸发排出，防止喷补料的爆裂；而补强纤维的加入，可提高喷补料使用层的结合强度，防止使用过程中的快速冲蚀；
复合结合剂和溶胶的加入不仅可保证喷补料在喷补过程中的分散均匀性，还可使喷出的喷补料可快速与热态浸渍管结合，防止喷补料的回弹和脱落；
与现有技术相比，本发明的有益效果为：
1)本发明所述RH精炼炉浸渍管用喷补料具有较高的附着率，可有效克服目前喷补料使用寿命短、附着率不高以及回弹大等问题。
2)适用性广，不仅可应用于RH精炼炉浸渍管，同时还可以应用于钢包、中间包、铁包等耐高温行业领域；应用于浸渍管喷补后，可大幅延长浸渍管的使用寿命，减少喷补次数和喷补料的消耗，有望推广进行大规模的生产应用。
具体实施方式
为了更好地理解本发明，下面结合实施例进一步阐明本发明的内容，但本发明不仅仅局限于下面的实施例。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。
实施例1
一种RH高附着率喷补料，其制备方法包括如下步骤：
1)按配比称取各原料，各原料及其所占质量百分比为：废旧镁铬砖回收料(MgO＞95％)50％，烧结镁砂(MgO>92％)28％，镁白云石砂10％，镁钙砂5％，微粉(氧化铝)2％，添加物2％(红柱石)，防爆纤维0.05％，补强纤维0.5％，复合结合剂1.95％(Ca(OH)2、磷酸盐的质量比为1:1)，溶胶0.5％(硅溶胶)；其中，废旧镁铬砖回收料中不同粒径颗粒及其所占质量百分比为：3-1mm颗粒35％，1-0.5mm颗粒35％，0.5-0.088mm颗粒15％，小于0.088mm颗粒15％，其中MgO含量为86wt％，Cr2O3的含量为5.5wt％；烧结镁砂中不同粒径颗粒及其所占质量百分比为：3-1mm颗粒25％，1-0.5mm颗粒30％，0.5-0.088mm颗粒25％，小于0.088mm颗粒20％；镁白云石砂1-0.5mm颗粒30％，0.5-0.088mm颗粒30％，小于0.088mm颗粒40％，其中MgO含量为62wt％；镁钙砂中不同粒径颗粒及其所占质量百分比为：1-0.5mm颗粒40％，0.5-0.088mm颗粒30％，小于0.088mm颗粒30％，其中CaO的含量为22％，MgO的含量为67wt％；所述氧化铝微粉的平均粒径0.05微米；红柱石的平均粒径为0.1mm；防爆纤维为直径1μm、长3mm的有机纤维(聚丙烯纤维)；补强纤维为直径0.5mm、长15mm的金属纤维(耐热钢纤维)；硅溶胶中SiO2含量为25wt％；
2)采用混料机对称取的各原料进行混合，混合过程中，先加骨料混合30min，然后逐渐加入细粉、添加物、防爆纤维，补强纤维、复合结合剂以及溶胶再混合5h，混匀后，将所得混合料装袋抽真空待用，即得所述RH高附着率喷补料。
经测试，本实施例所得产物1500℃烧后体积密度为2.57g/cm3，1500℃烧后抗折强度为6.5MPa，1500℃烧后线变化率-1.3％，1200℃高温抗折强度1.2MPa，喷补一次可使用3炉，附着率为87％。
实施例2
一种RH高附着率喷补料，其制备方法包括如下步骤：
1)按配比称取各原料，各原料及其所占质量百分比为：废旧镁铬砖回收料(MgO＞95％)55％，烧结镁砂(MgO>92％)20％，镁白云石砂13％，镁钙砂5％，微粉(氧化铝和氧化硅微粉)3％，添加物1％(红柱石)，防爆纤维0.03％，补强纤维0.8％，复合结合剂1.17％(Mg(OH)2与磷酸盐的质量比为1:2)，溶胶1％(铝溶胶，Al2O3含量为20wt％以上)；其中，废旧镁铬砖回收料中不同粒径颗粒及其所占质量百分比为：3-1mm颗粒30％，1-0.5mm颗粒35％，0.5-0.088mm颗粒20％，小于0.088mm颗粒15％，其中MgO含量为88.5wt％，Cr2O3的含量为6.5wt％；烧结镁砂中不同粒径颗粒及其所占质量百分比为：3-1mm颗粒25％，1-0.5mm颗粒30％，0.5-0.088mm颗粒25％，小于0.088mm颗粒20％；镁白云石砂1-0.5mm颗粒30％，0.5-0.088mm颗粒30％，小于0.088mm颗粒40％，其中MgO含量为63wt％；镁钙砂中不同粒径颗粒及其所占质量百分比为：1-0.5mm颗粒40％，0.5-0.088mm颗粒30％，小于0.088mm颗粒30％，其中CaO的含量为25％，MgO的含量为66.5wt％；所述微粉由氧化铝和氧化硅微粉按1:1的质量比加入，平均粒径0.1微米；红柱石的粒径为0.1mm；防爆剂为直径2μm、长3.5mm的有机纤维(聚乙烯纤维)；补强纤维为直径0.6mm、长20mm的金属纤维(耐热钢纤维)；硅溶胶中SiO2含量为25％；
2)采用混料机对称取的各原料进行混合，混合过程中，先加骨料混合1min，然后逐渐加入细粉、添加物、防爆剂，补强纤维、复合结合剂以及溶胶再混合4h，混匀后，将所得混合料装袋抽真空待用，即得所述RH高附着率喷补料。
经测试，本实施例所得产物1500℃烧后体积密度为2.45g/cm3，1500℃烧后抗折强度为8.5MPa，1500℃烧后线变化率-1.6％，1200℃高温抗折强度1.5MPa，喷补一次可使用4炉，附着率为88％。
实施例3
一种RH高附着率喷补料，其制备方法包括如下步骤：
1)按配比称取各原料，各原料及其所占质量百分比为：废旧镁铬砖回收料(MgO＞95％)43％，烧结镁砂(MgO>92％)30％，镁白云石砂13％，镁钙砂7％，微粉(氧化铝和MgO微粉)2％，添加物1％(锆英石)，防爆纤维0.05％，补强纤维0.95％，复合结合剂2％(Mg(OH)2、磷酸盐的质量比为1:3)，溶胶1％(铝溶胶)；其中，废旧镁铬砖回收料中不同粒径颗粒及其所占质量百分比为：3-1mm颗粒35％，1-0.5mm颗粒30％，0.5-0.088mm颗粒20％，小于0.088mm颗粒15％，其中MgO含量为88wt％，Cr2O3的含量为7.2wt％；烧结镁砂中不同粒径颗粒及其所占质量百分比为：3-1mm颗粒35％，1-0.5mm颗粒30％，0.5-0.088mm颗粒25％，小于0.088mm颗粒10％；镁白云石砂1-0.5mm颗粒40％，0.5-0.088mm颗粒30％，小于0.088mm颗粒30％，其中MgO含量为64wt％；镁钙砂中不同粒径颗粒及其所占质量百分比为：1-0.5mm颗粒35％，0.5-0.088mm颗粒25％，小于0.088mm颗粒40％，其中CaO的含量为21wt％，MgO的含量为68wt％；所述微粉由氧化铝和MgO微粉按1:1的质量比混合，平均粒径0.1微米；红柱石的粒径为0.1mm；防爆剂为直径5μm、长5mm的有机纤维(聚酯纤维)；补强纤维为直径0.2mm、长15mm的金属纤维(耐热钢纤维)；硅铝溶胶，其中SiO2占15wt％，Al2O3占10wt％；
2)采用混料机对称取的各原料进行混合，混合过程中，先加骨料混合1min，然后逐渐加入细粉、添加物、防爆剂，补强纤维、复合结合剂以及溶胶再混合4h，混匀后，将所得混合料装袋抽真空待用，即得所述RH高附着率喷补料。
经测试，本实施例所得产物1500℃烧后体积密度为2.53g/cm3，1500℃烧后抗折强度为7.1MPa，1500℃烧后线变化率1.1％，1200℃高温抗折强度1.8MPa，喷补一次可使用5炉，附着率为90％。
实施例4
一种RH高附着率喷补料，其制备方法包括如下步骤：
1)按配比称取各原料，各原料及其所占质量百分比为：废旧镁铬砖回收料(MgO＞95％)40％，烧结镁砂(MgO>92％)26％，镁白云石砂15％，镁钙砂10％，微粉(氧化硅、ZrO2、SiC)2％，添加物3％(锆英石和硅线石按质量比1:1添加)，防爆纤维0.03％，补强纤维0.5％，复合结合剂1.97％(Ca(OH)2、磷酸盐、聚磷酸盐的质量比为1:1:1)，溶胶1.5％(铝溶胶)；其中，废旧镁铬砖回收料中不同粒径颗粒及其所占质量百分比为：3-1mm颗粒35％，1-0.5mm颗粒35％，0.5-0.088mm颗粒15％，小于0.088mm颗粒15％，其中MgO含量为89wt％，Cr2O3的含量为5.5wt％；烧结镁砂中不同粒径颗粒及其所占质量百分比为：3-1mm颗粒25％，1-0.5mm颗粒30％，0.5-0.088mm颗粒25％，小于0.088mm颗粒10％；镁白云石砂1-0.5mm颗粒30％，0.5-0.088mm颗粒30％，小于0.088mm颗粒40％，其中MgO含量为63wt％；镁钙砂中不同粒径颗粒及其所占质量百分比为：1-0.5mm颗粒40％，0.5-0.088mm颗粒30％，小于0.088mm颗粒30％，其中CaO的含量为26％，MgO的含量为66wt％；所述微粉由氧化硅、ZrO2、SiC微粉按2:1:1的质量比加入，平均粒径0.1微米；红柱石和硅线石的平均粒径为0.3mm；防爆剂为直径3μm、长3.5mm的有机纤维(聚丙烯纤维和聚乙烯纤维按1:1的质量比添加)；补强纤维为直径0.7mm、长20mm的金属纤维(普通钢纤维)；SiO2含量为30％的硅溶胶和Al2O3含量为35％的铝溶胶，质量比为1:1；
2)采用混料机对称取的各原料进行混合，混合过程中，先加骨料混合1.5h，然后逐渐加入细粉、添加物、防爆剂，补强纤维、复合结合剂以及溶胶再混合6h，混匀后，将所得混合料装袋抽真空待用，即得所述RH高附着率喷补料。
经测试，本实施例所得产物1500℃烧后体积密度为2.6g/cm3，1500℃烧后抗折强度为9.0MPa，1500℃烧后线变化率-1.5％，1200℃高温抗折强度2.0MPa，喷补一次可使用5炉，附着率为90％。
显然，上述实施例仅仅是为清楚地说明所作的实例，而并非对实施方式的限制。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而因此所引申的显而易见的变化或变动仍处于本发明创造的保护范围之内。

Claims (6)

1.一种RH高附着率喷补料，其特征在于，各组分及其所占质量百分比包括：废旧镁铬砖回收料 30~60%，烧结镁砂 20~45%，镁白云石砂 10~30%，镁钙砂 5~20%，微粉 1~6%，添加物1~5%，防爆纤维 0.01~0.1%，补强纤维 0.5~2%，复合结合剂 0.5~4%，溶胶 0.5~2%；其中添加物为硅线石、红柱石、蓝晶石、锆英石中的一种或几种；复合结合剂为Ca(OH)2与磷酸盐、Mg (OH)2与磷酸盐或Ca(OH)2与磷酸盐和聚磷酸盐；
所述镁白云石砂中不同粒径颗粒及其所占质量百分比包括：1-0.5mm颗粒 30-50%，0.5-0.088mm颗粒 15-35%，小于0.088mm颗粒 20-40%；MgO>60wt%，CaO>15wt%；
所述镁钙砂中不同粒径颗粒及其所占质量百分比包括：1-0.5mm颗粒 30-50%，0.5-0.088mm 颗粒15-35%，小于0.088mm颗粒 20-40%；其中CaO>20wt%，MgO>65wt%；
所述溶胶为铝溶胶；
所得RH高附着率喷补料，其1500℃烧后体积密度为2.3~2.7g/cm3，1500℃ 烧后抗折强度为5~15MPa，1500℃烧后线变化率-1.6~1.1%，1200℃高温抗折强度0.8~2.5MPa，喷补一次可使用4~6炉，附着率可达88~92%。
2.根据权利要求1所述的RH高附着率喷补料，其特征在于，所述废旧镁铬砖回收料中不同粒径颗粒及其所占质量百分比包括：3-1mm颗粒 15-35%，1-0.5mm颗粒 20-35%，0.5-0.088mm颗粒 15-25%，小于0.088mm颗粒 10-30%；其中MgO＞85wt%，Cr2O3>5wt%。
3.根据权利要求1所述的RH高附着率喷补料，其特征在于，所述烧结镁砂中不同粒径颗粒及其所占质量百分比包括：3-1mm颗粒 15-35%，1-0.5mm颗粒 20-35%，0.5-0.088mm 颗粒15-25%，小于0.088mm颗粒 10-30%；MgO>92wt%。
4.根据权利要求1所述的RH高附着率喷补料，其特征在于，所述微粉为氧化铝、氧化硅、ZrO2、MgO、SiC中的一种或几种，平均粒径为0.05~0.2μm。
5.根据权利要求1所述的RH高附着率喷补料，其特征在于，所述防爆纤维的直径为0.1~10μm，长度为1~5mm；为聚乙烯纤维、聚丙烯纤维、聚酯纤维中的一种或几种。
6.权利要求1~5任一项所述RH高附着率喷补料的制备方法，其特征在于，包括如下步骤：1）按配比称取各原料；2）喷补料的制备，首先将称取的骨料进行混料，然后加入微粉、添加物、防爆纤维、补强纤维、复合结合剂和溶胶，继续混合均匀；3）将所得混合料进行成型、烧结，即得所述RH高附着率喷补料。
CN202110678806.6A 2021-06-18 2021-06-18 一种rh高附着率喷补料及其制备方法 Active CN113603461B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110678806.6A CN113603461B (zh) 2021-06-18 2021-06-18 一种rh高附着率喷补料及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110678806.6A CN113603461B (zh) 2021-06-18 2021-06-18 一种rh高附着率喷补料及其制备方法

Publications (2)

Publication Number Publication Date
CN113603461A CN113603461A (zh) 2021-11-05
CN113603461B true CN113603461B (zh) 2023-03-14

Family

ID=78336595

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110678806.6A Active CN113603461B (zh) 2021-06-18 2021-06-18 一种rh高附着率喷补料及其制备方法

Country Status (1)

Country Link
CN (1) CN113603461B (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117430437B (zh) * 2023-12-20 2024-03-12 中钢洛耐科技股份有限公司 用于熔分炉蓄热室格子体的复合耐火材料及其制法和应用
CN117430439B (zh) * 2023-12-20 2024-03-12 中钢洛耐科技股份有限公司 用于熔分炉炉顶及上部的复合耐火材料及其制法和应用

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101367659A (zh) * 2008-06-20 2009-02-18 上海彭浦特种耐火材料厂 一种冶炼硅钢用镁钙质rh浸渍管热喷补料及其配制方法
CN103755371A (zh) * 2014-02-09 2014-04-30 山国强 一种中温喷补料
CN111960806A (zh) * 2020-08-18 2020-11-20 武汉钢铁集团耐火材料有限责任公司 Rh浸渍管喷补料的回弹料回收利用方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101367659A (zh) * 2008-06-20 2009-02-18 上海彭浦特种耐火材料厂 一种冶炼硅钢用镁钙质rh浸渍管热喷补料及其配制方法
CN103755371A (zh) * 2014-02-09 2014-04-30 山国强 一种中温喷补料
CN111960806A (zh) * 2020-08-18 2020-11-20 武汉钢铁集团耐火材料有限责任公司 Rh浸渍管喷补料的回弹料回收利用方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
RH真空精炼炉浸渍管用热喷补料的研制;张耀磺等;《宝钢技术》;19950630;第31-35页 *
废旧镁铬砖再生料在 RH 浸渍管喷补料中的应用;朱遂宾等;《中国资源综合利用》;20160430;第25-28页 *

Also Published As

Publication number Publication date
CN113603461A (zh) 2021-11-05

Similar Documents

Publication Publication Date Title
CN113603461B (zh) 一种rh高附着率喷补料及其制备方法
CN112500139B (zh) 一种高强度抗冲刷侵蚀钢包自流浇注料及其制备方法
CN102775156A (zh) 一种不烧铝镁尖晶石砖
CN105819875B (zh) 一种澳斯麦特炼铜炉烟道用耐火浇注料及其制备方法
CN112142448B (zh) 一种转炉出钢口喷补料及其制备方法
CN105859314A (zh) 一种钢水冶炼设备用含碳喷补料及其制备方法
CN113666734A (zh) 一种转炉用绿色环保型镁尖晶石质喷补料及其制备和应用
CN111170723A (zh) 镁质高强度喷补料
CN112358302B (zh) 一种自修复无水炮泥
CN103408311A (zh) 一种用于rh耐火砖修补的喷补料
CN108585797B (zh) 一种添加氮化硼的自润滑镁质挡渣滑板砖及其制备方法
CN110563449A (zh) 一种rh炉用环境友好型镁碳质喷补料及其制备方法
CN114031377A (zh) 一种无碳钢包用无水泥结合喷补料及其制备方法
CN102659432B (zh) 一种rh喷补料
CN110041087B (zh) 一种真空处理硅钢用无铬砖及其生产方法
CN105777160B (zh) 一种钢包渣线用MgO-Cr7C3砖及其制备方法
CN113277836B (zh) 一种rh浸渍管用喷补料及其制备方法
CN110526689B (zh) 一种高强度高炉铁口通道预制件及其制备方法
CN1298465C (zh) 一种大型钢包包底耐火材料
CN103936431B (zh) 一种熔融还原炉出铁口用捣打料
JP4546934B2 (ja) 使用後耐火物利用の不定形耐火物の製造方法
CN105000892A (zh) 一种rh炉下部槽工作衬镁铝尖晶石砖用热补喷补料
CN114573324A (zh) 一种rh真空炉内衬耐火材料及其制备方法
CN111018497A (zh) 中频感应炉用碱性捣打料
CN111470852A (zh) 一种转炉用大面料

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