CN111170723A - 镁质高强度喷补料 - Google Patents
镁质高强度喷补料 Download PDFInfo
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- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 40
- 239000011777 magnesium Substances 0.000 title claims abstract description 40
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000000203 mixture Substances 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 26
- 239000001095 magnesium carbonate Substances 0.000 claims abstract description 13
- 235000014380 magnesium carbonate Nutrition 0.000 claims abstract description 13
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract description 13
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 13
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 7
- 239000011575 calcium Substances 0.000 claims abstract description 7
- 239000004014 plasticizer Substances 0.000 claims abstract description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 28
- 239000000395 magnesium oxide Substances 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- NACUKFIFISCLOQ-UHFFFAOYSA-N [Mg].[Cr] Chemical compound [Mg].[Cr] NACUKFIFISCLOQ-UHFFFAOYSA-N 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 2
- 239000004375 Dextrin Substances 0.000 claims description 2
- 229920001353 Dextrin Polymers 0.000 claims description 2
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N chromium(III) oxide Inorganic materials O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 2
- 239000004927 clay Substances 0.000 claims description 2
- 235000019425 dextrin Nutrition 0.000 claims description 2
- 239000004571 lime Substances 0.000 claims description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 11
- 239000010959 steel Substances 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000002893 slag Substances 0.000 abstract description 6
- -1 magnesium aluminate Chemical class 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 4
- 238000005245 sintering Methods 0.000 abstract description 4
- 239000007791 liquid phase Substances 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 238000009991 scouring Methods 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
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- 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
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- 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
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- 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
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
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- 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
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- 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
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Abstract
本发明公开了一种镁质高强度喷补料，它的原料包括50～97份的镁质原料、1～8份的铝酸镁、1～10份的增塑剂和1～10份的促烧剂；其中，所述镁质原料选自烧结镁砂，高钙镁砂和镁铬再生料。本发明中铝酸镁与镁质原料在有水的前提下，快速反应生成凝胶体，产生结合强度，同时还提升了喷补料的附着性能；添加少量的促烧剂，在高温下能够促进烧结，有效提升高温烧结强度；该喷补料在高温下形成液相量有限，收缩较小，抗钢渣渗透性好，不易形成结构剥落。
Description
技术领域
本发明涉及冶金用耐火材料技术领域，具体涉及一种镁质高强度喷补料。
背景技术
为了适应现代化快节奏钢铁冶炼，延长冶炼容器寿命，需要不断对冶炼容器薄弱区域进行修补维护。喷补是常用的修补维护措施，其中镁质喷补料用于转炉修补，RH插入管修补，钢包渣线修补等，包括镁质喷补料、镁钙质喷补料、镁铬质喷补料等。
常用的镁质喷补料结合剂一般有磷酸盐系列和硅酸钠中的一种或几种，磷酸盐系列包括三聚磷酸钠、六偏磷酸钠等。该结合剂加入量一般在1份～5份。由结合剂引入了大量的Na+离子，能够大幅度降低镁砂的熔点，在高温下形成大量的低熔物，降低了喷补料耐冲刷性；同时，高温下收缩严重，形成大量裂纹，导致钢渣渗透严重，形成结构剥落。部分厂家通过添加少量的碳，阻止低熔物的形成，但含碳喷补料强度过低，耐钢水冲刷性有限。还有部分厂家使用高CaO镁砂在高温下形成高熔点的Na2O·2CaO·P2O5，提升高温性能，但过高的CaO易在常温下发生粉化现象，影响使用寿命。
因此，有必要研制出一种强度高，耐钢水冲刷性及钢渣渗透性好的镁质高强度喷补料。
发明内容
本发明的目的在于克服现有技术的不足，提供了一种镁质高强度喷补料，其具备强度高，耐钢水冲刷性及钢渣渗透性好的特点。
为实现上述目的，本发明所设计一种镁质高强度喷补料，它的原料组分和重量份数为：
其中，所述镁质原料选自烧结镁砂，高钙镁砂和镁铬再生料。
进一步地，所述它的原料组分和重量份数为：
其中，所述镁质原料选自烧结镁砂，高钙镁砂和镁铬再生料。
再进一步地，所述镁质原料粒度按粒度大小分为5mm≤粒度＜3mm、3mm≤粒度＜1mm、1mm≤粒度＜0.088mm和≤0.088mm的四个级配；四个级配的镁质原料重量份数分别为10～20份、10～25份、20～45份和10～30份。
再进一步地，所述烧结镁砂MgO含量不低于90％；所述高钙镁砂MgO与CaO总含量不低于90％；所述镁铬再生料MgO与Cr2O3总含量不低于70％。
再进一步地，所述增塑剂为粘土、羧甲基纤维素钠、糊精和活性石灰中的任意一种或几种(能够有效改善喷补料的附着性)。
再进一步地，所述促烧剂为二氧化硅微粉、轻烧氧化镁和金属铝粉中的任意一种或几种。
再进一步地，所述镁质高强度喷补料的原料组分和重量份数为：
上述镁质高强度喷补料以上原料按照配比在搅拌机内混合均匀，加水搅拌1～5分钟，出料后进行防潮包装，即可运往现场使用。
本发明技术原理如下：
本发明中铝酸镁与镁质原料在有水的前提下，快速反应生成凝胶体，产生结合强度，同时还提升了喷补料的附着性能；添加少量的促烧剂，在高温下能够促进烧结，有效提升高温烧结强度；该喷补料在高温下形成液相量有限，收缩较小，抗钢渣渗透性好，不易形成结构剥落。
本发明的有益效果：
1)本发明原料中铝酸镁与镁砂反应速度快，强度高；
2)本发明喷补附着率高，反弹率低，有效降低喷补料消耗；
3)高温下液相少，强度高，不易收缩变型，耐钢水冲刷性优良，不易形成
具体实施方式
下面结合具体实施例对本发明作进一步的详细描述，以便本领域技术人员理解。
实施例1
镁质高强度喷补料1，其组成和重量份数为：
将以上原料按照配比在搅拌机内混合均匀，加水搅拌3分钟，出料后进行防潮包装，即可运往现场使用。
实施例2
镁质高强度喷补料2，其组成和重量份数为：
将以上原料按照配比在搅拌机内混合均匀，加水搅拌3分钟，出料后进行防潮包装，即可运往现场使用。
实施例3
镁质高强度喷补料3，其组成和重量份数为：
将以上原料按照配比在搅拌机内混合均匀，加水搅拌2分钟，出料后进行防潮包装，即可运往现场使用。
实施例4
镁质高强度喷补料4，其组成和重量份数为：
将以上原料按照配比在搅拌机内混合均匀，加水搅拌2分钟，出料后进行防潮包装，即可运往现场使用。
实施例5
镁质高强度喷补料5，其组成和重量份数为：
将以上原料按照配比在搅拌机内混合均匀，加水搅拌2分钟，出料后进行防潮包装，即可运往现场使用。
以上述实施例1～5得到镁质高强度喷补料1～5与现有产品对比如表1：
表1
由表1可知：镁质高强度喷补料1～5性能明显优于现有产品，实施例1效果最好。
其它未详细说明的部分均为现有技术。尽管上述实施例对本发明做出了详尽的描述，但它仅仅是本发明一部分实施例，而不是全部实施例，人们还可以根据本实施例在不经创造性前提下获得其他实施例，这些实施例都属于本发明保护范围。
Claims (7)
1.一种镁质高强度喷补料，其特征在于：它的原料组分和重量份数为：
其中，所述镁质原料选自烧结镁砂，高钙镁砂和镁铬再生料。
2.根据权利要求1所述镁质高强度喷补料，其特征在于：所述它的原料组分和重量份数为：
其中，所述镁质原料选自烧结镁砂，高钙镁砂和镁铬再生料。
3.根据权利要求1所述镁质高强度喷补料，其特征在于：所述镁质原料粒度按粒度大小分为5mm≤粒度＜3mm、3mm≤粒度＜1mm、1mm≤粒度＜0.088mm和≤0.088mm的四个级配；四个级配的镁质原料重量份数分别为10～20份、10～25份、20～45份和10～30份。
4.根据权利要求3所述镁质高强度喷补料，其特征在于：所述烧结镁砂MgO含量不低于90％；所述高钙镁砂MgO与CaO总含量不低于90％；所述镁铬再生料MgO与Cr2O3总含量不低于70％。
5.根据权利要求1或2所述镁质高强度喷补料，其特征在于：所述增塑剂为粘土、羧甲基纤维素钠、糊精和活性石灰中的任意一种或几种。
6.根据权利要求1或2所述镁质高强度喷补料，其特征在于：所述促烧剂为二氧化硅微粉、轻烧氧化镁和金属铝粉中的任意一种或几种。
7.根据权利要求1或2所述镁质高强度喷补料，其特征在于：它的原料组分和重量份数为：
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| CN112851306A (zh) * | 2021-01-13 | 2021-05-28 | 湖南湘钢瑞泰科技有限公司 | 一种rh用快速烧结喷补料及其制备方法 |
| CN113233906A (zh) * | 2021-06-16 | 2021-08-10 | 浙江自立高温科技股份有限公司 | 适用于冶炼洁净钢的镁钙质喷补料及其制备方法和应用 |
| CN114195529A (zh) * | 2020-09-17 | 2022-03-18 | 宝山钢铁股份有限公司 | 精炼钢包用高强镁质耐火泥 |
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| 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 |
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| CN112851306A (zh) * | 2021-01-13 | 2021-05-28 | 湖南湘钢瑞泰科技有限公司 | 一种rh用快速烧结喷补料及其制备方法 |
| CN115246733A (zh) * | 2021-04-28 | 2022-10-28 | 宝山钢铁股份有限公司 | 一种高耐用性中间包涂料及其应用 |
| CN113233906A (zh) * | 2021-06-16 | 2021-08-10 | 浙江自立高温科技股份有限公司 | 适用于冶炼洁净钢的镁钙质喷补料及其制备方法和应用 |
| CN113233906B (zh) * | 2021-06-16 | 2022-04-08 | 浙江自立高温科技股份有限公司 | 适用于冶炼洁净钢的镁钙质喷补料及其制备方法和应用 |
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