CN116239369A - 一种矾土基浇注料及其应用 - Google Patents
一种矾土基浇注料及其应用 Download PDFInfo
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 47
- 239000000835 fiber Substances 0.000 claims abstract description 30
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 235000019832 sodium triphosphate Nutrition 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 15
- 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 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 15
- 239000004568 cement Substances 0.000 claims abstract description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 24
- 238000010079 rubber tapping Methods 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 150000004645 aluminates Chemical group 0.000 claims description 2
- -1 polypropylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229910021487 silica fume Inorganic materials 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 2
- 239000012752 auxiliary agent Substances 0.000 abstract 1
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- 239000000463 material Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000005266 casting Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 239000010431 corundum Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
本发明公开一种矾土基浇注料及其应用。本发明所述的高强度矾土基浇注料以铝矾土为主要原料，骨料采用8～5mm，5～3mm，3～1mm，1～0mm四级粒度匹配，细粉采用0.075mm的矾土粉和碳化硅细粉，结合剂采用高铝水泥和硅微粉，助剂采用三聚磷酸钠和六偏磷酸钠，并添加适量钢纤维和防爆纤维。该矾土基浇注料通过调整复合微粉的比例，解决了一般浇注料常温强度和高温强度的矛盾，制得了一种常温强度和高温强度都很高的矾土基浇注料。该浇注料常温耐压强度最高可达193MPa，常温抗折强度最高可达24MPa，高温耐压强度最高可达120.6MPa(1300℃，3h)，高温抗折强度最高可达22.5MPa。
Description
技术领域
本发明涉及耐火材料技术领域，尤其涉及一种高炉出铁沟盖用矾土质浇注料。
背景技术
高炉出铁沟承担着高炉炉渣和铁水的排放，出铁沟盖则受到高温铁水的高达2000℃的辐射热，由于长期受到炉渣和铁水的辐射热侵蚀，出铁沟盖容易出现损坏，所以我们需要使用高强度矾土质浇注料对出铁沟盖进行防护。现有的出铁沟盖料，高低温机械强度差，易坍塌、热稳定性差，导致维修频繁，影响设备的运转率。
发明内容
为了解决现有技术中，高炉出铁沟盖用浇注料存在的高低温机械强度差，易坍塌、热稳定性差的技术问题，本发明的技术方案如下；
本发明中的高炉出铁沟盖用浇注料是由下述重量配比的原料，总计100％，制备而成。
| 种类 | 质量比 |
| 铝矾土 | 50％～85％ |
| 碳化硅 | 5％～20％ |
| 硅微粉 | 10％～20％ |
| 高铝水泥 | 12％～30％ |
| 三聚磷酸钠 | 0.01％～0.5％ |
| 六偏磷酸钠 | 0.01％～0.5％ |
| 钢纤维 | 0.2％～5％ |
| 防爆纤维 | 0.01％～2％ |
所述的级配的粉料优选重量配比为：
所述的级配的粉料优选重量配比为：
| 种类 | 质量比 |
| 铝矾土 | 58％～75％ |
| 碳化硅 | 8％～12％ |
| 硅微粉 | 8％～12％ |
| 高铝水泥 | 15％～22％ |
| 三聚磷酸钠 | 0.01％～0.3％ |
| 六偏磷酸钠 | 0.01％～0.3％ |
| 钢纤维 | 0.2％～3％ |
| 防爆纤维 | 0.01％～1％ |
所述的铝矾土是由粒度为8～5mm、5～3mm、3～1mm、1～0mm、0.075mm的铝矾土混合得到的集料，所述集料中粒度为8～5mm、5～3mm、3～1mm、1～0mm、 0.075mm的铝矾土的质量比为2：(1～1.5)：(1～1.6)：(1～1.4)：(1.9～2.2)；
所述的碳化硅的粒度为100～300目，碳化硅中SiC的质量百分含量≥90％，优选为200目，碳化硅中SiC的质量百分含量≥95％；
所述的硅微粉为硅灰，优选型号为970；
所述的高铝水泥为铝酸盐水泥，优选型号为CA70水泥；
所述的三聚磷酸钠中以Na5P3O10计，百分含量≥80％，优选三聚磷酸钠中 Na5P3O10百分含量≥90％；
所述的六偏磷酸钠中以P2O5计，百分含量≥60％，优选六偏磷酸钠中P2O5计百分含量≥68％；
所述的钢纤维为含有Cr的不锈钢纤维，优选型号为446钢纤维；
所述的防爆纤维材质是聚丙烯，优选防爆纤维的长度为3～6mm；
该浇注料常温耐压强度最高可达193MPa，常温抗折强度最高可达24MPa，高温耐压强度最高可达120.6MPa(1300℃，3h)，高温抗折强度最高可达22.5MPa。该矾土基浇注料有以下优点：1.该浇注料原材料价格低廉，配方简单，原料易得，生产简易；2.该浇注料施工方式为浇注，成型后涂料的常温和高温机械强度均比较高；3.该浇注料体积密度适中，不会产生过多的载重；4.该浇注料成型快，成型后修补料不会因为环境问题(风、高温、暴晒)而产生裂纹，适用于高湿、高盐雾、高紫外线照射的环境；5.成型后该浇注料在常温和高温条件下具有很高的强度，能够耐受住热辐射冲击；6.成型后耐腐蚀性耐水性优异，可以用于高炉、航天等有高温需求的行业。
本发明的优点和有益效果是：
本发明中的高炉出铁沟盖用浇注料，该浇注料骨料采用铝矾土，提高了浇注料的耐火度和高温强度；该浇注料加入了碳化硅，碳化硅导热率高，热膨胀系数小，难于被钢液及熔渣浸润，且其在高温下的氧化属于保护型氧化，抗氧化能力明显优于碳素材料，增强了成型后浇注料的高温化学性质稳定；该浇注料加入钢纤维，增加浇注料的韧性、高温强度和高温耐烧蚀性；该浇注料加入三聚磷酸钠和六偏磷酸钠，起到了分散剂和减水剂的作用；该浇注料加入了防爆纤维，浇注料成型后，进行烘烤，防爆纤维开始软化、收缩、熔化，最后形成气孔。它在施工体内分布形成气孔，减轻内部应力，防止爆裂，提高整体使用寿命。
本发明的高强度浇注料在常温和高温条件下具有高强度，可以耐受住高炉出铁沟中高温炉渣和铁水的辐射热而不会出现坍塌或者掉落的现象，能够有效保证高炉的有效运行。另外该高强度浇注料耐酸碱。本发明也可以用于某些在高温条件下需要高强度工况的行业。
具体实施方式
下面结合具体实施例和附表来进一步描述本发明，本发明的优点和特点将会随着描述而更为清楚。
实施例1
一种高炉出铁沟盖用高强度浇注料，按照重量百分比(总量100％)，铝矾土的总质量分数为63.05％，铝矾土中Al2O3的质量百分含量≥85％，粒度为8-5mm 的铝矾土质量百分数为21％，粒度为小于5-3mm的铝矾土质量百分数为10.5％，粒度为小于3-1mm的铝矾土质量百分数为11.05％，粒度为的铝矾土小于1-大于 0.075mm质量百分数为10.5％，粒度为200目的铝矾土质量分数为20.95％；
200目碳化硅质量分数为9％，碳化硅中SiC的质量百分含量≥95％；硅微粉质量分数为10％；CA60水泥质量分数为16％；三聚磷酸钠的质量分数为0.08％，三聚磷酸钠中Na5P3O10百分含量≥90％；六偏磷酸钠的质量分数为0.07％，,六偏磷酸钠中P2O5计百分含量≥68％；446钢纤维的质量分数为1.4％，防爆纤维的质量分数为0.4％。
利用上述配比制得的高炉出铁沟盖用高轻度浇注料，加水量为浇注料质量 7.5％～8.5％，其性能见表1。
表1耐压、抗折强度指标
实施例2
一种高炉出铁沟用高强度浇注料，按照重量百分比(总量100％)，铝矾土的总质量分数为60.83％，铝矾土中Al2O3的质量百分含量≥85％，粒度为8-5mm的铝矾土质量百分数为19％，粒度为小于5-3mm的铝矾土质量百分数为10％，粒度为小于3-1mm的铝矾土质量百分数为10％，粒度为的铝矾土小于1-大于 0.075mm质量百分数为10％，粒度为200目的铝矾土质量分数为17.83％；
200目碳化硅质量分数为7％，碳化硅中SiC的质量百分含量≥95％；硅微粉质量分数为11.5％；CA70水泥质量分数为18.5％；三聚磷酸钠的质量分数为 0.04％，三聚磷酸钠中Na5P3O10百分含量≥90％；六偏磷酸钠的质量分数为0.03％，, 六偏磷酸钠中P2O5计百分含量≥68％；446钢纤维的质量分数为1.6％，防爆纤维的质量分数为0.5％。
利用上述配比制得的高炉出铁沟盖用高轻度浇注料，加水量为浇注料质量 7.5％～8.5％，其性能见表1。
表2耐压、抗折强度指标
实施例3
一种高炉出铁沟用高强度浇注料，按照重量百分比(总量100％)，铝矾土的总质量分数为60.84％，铝矾土中Al2O3的质量百分含量≥85％，粒度为8-5mm的铝矾土质量百分数为18.84％，粒度为小于5-3mm的铝矾土质量百分数为10％，粒度为小于3-1mm的铝矾土质量百分数为11％，粒度为的铝矾土小于1-大于 0.075mm质量百分数为10％，粒度为200目的铝矾土质量分数为18％；
200目碳化硅质量分数为7％，碳化硅中SiC的质量百分含量≥95％；硅微粉质量分数为10.5％；CA70水泥质量分数为18％；三聚磷酸钠的质量分数为0.03％，三聚磷酸钠中Na5P3O10百分含量≥90％；六偏磷酸钠的质量分数为0.03％，,六偏磷酸钠中P2O5计百分含量≥68％；446钢纤维的质量分数为3％；防爆纤维的质量分数为0.6％。
利用上述配比制得的高炉出铁沟盖用高轻度浇注料，加水量为浇注料质量7.5％～8.5％，其性能见表1。
表3耐压、抗折强度指标
实施例1、实施例2和实施例3通过优化粒度级配、调整复合微粉的比例等措施，实施例1～实施例3中的常温强度和高温强度逐渐增高，常温耐压强度可达193.0MPa、常温抗折强度可达到24.0MPa、高温耐压强度最高可达120.6MPa、高温抗折强度最高可达22.5MPa，解决了一般浇注料中常温强度和高温强度的矛盾，制得了一种常温强度和高温强度都很高的矾土质浇注料
对比例
对比郑州盛阳耐材科技有限公司出售的两种刚玉基高强度浇注料，其性能指标如下表。
表4耐压、抗折强度指标
对比例中的郑州盛阳耐材科技有限公司出售的两种刚玉基高强度浇注料仅在高温强度较高，其中高温耐压强度至100MPa，高温抗折强度至12MPa，而中常温强度较低，常温耐压强度低至12MPa，常温抗折强度低至8MPa；实施例1～3 中，实施例1中的常温和高温强度最低：常温耐压强度160.5MPa，常温抗折强度20.4MPa，高温耐压强度107.0MPa，高温抗折强度15.3MPa，所有强度均大于对比例中的浇注料，但铝矾土的价格仅为刚玉的四分之一。
Claims (7)
1.一种矾土基浇注料，其特征在于：按照重量百分比，矾土质浇注料由铝矾土、碳化硅5％～20％、硅微粉10％～20％、高铝水泥12％～30％、三聚磷酸钠0.01％～0.5％、六偏磷酸钠0.01％～0.5％、钢纤维0.2％～5％、防爆纤维0.01％～2％组成，其余为铝矾土，总计100％。
2.根据权利要求书1所述的矾土基浇注料，其特征在于：按照重量百分比，矾土质浇注料由铝矾土、碳化硅8％～15％、硅微粉8％～15％、高铝水泥15％～26％、三聚磷酸钠0.01％～0.4％、六偏磷酸钠0.01％～0.4％、钢纤维0.2％～4％、防爆纤维0.01％～1.5％组成，其余为铝矾土，总计100％。
3.根据权利要求书1所述的矾土基浇注料，其特征在于：按照重量百分比，矾土质浇注料由铝矾土、碳化硅8％～12％、硅微粉8％～12％、高铝水泥15％～22％、三聚磷酸钠0.01％～0.3％、六偏磷酸钠0.01％～0.3％、钢纤维0.2％～3％、防爆纤维0.01％～1％组成，其余为铝矾土，总计100％。
4.根据权利要求1～3所述的矾土基浇注料，其特征在于：所述的铝矾土中Al2O3的质量百分含量≥85％；所述的铝矾土由五级粒度级配充分混合而成，粒度为8～5mm、小于5～3mm、小于3～1mm、小于1～大于0.075mm、0.075mm以下的铝矾土的质量比为2：(1～1.5)：(1～1.6)：(1～1.4)：(1.9～2.2)。
5.根据权利要求1～3所述的矾土基浇注料，其特征在于：所述的碳化硅的粒度为100～300目，碳化硅中SiC的质量百分含量≥90％；所述的硅微粉为硅灰；所述的高铝水泥为铝酸盐水泥；所述的三聚磷酸钠中以Na5P3O10计，百分含量≥90％；所述的六偏磷酸钠中以P2O5计，百分含量≥68％；所述的钢纤维为446钢纤维；所述的防爆纤维材质是聚丙烯，防爆纤维的长度为3～6mm。
6.权利要求1～5所述的矾土基浇注料作为高炉出铁沟盖用浇注料。
7.权利要求1～5所述的矾土基浇注料可以用于其他需要在高温工况下有较高机械强度行业的浇注料。
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| CN101734934A (zh) * | 2009-10-28 | 2010-06-16 | 郑州真金耐火材料有限责任公司 | 高强度钢纤维浇注料 |
| CN103819203A (zh) * | 2013-10-31 | 2014-05-28 | 江苏顺星耐火科技有限公司 | 莫来石高强耐火浇注料 |
| CN105481380A (zh) * | 2014-09-19 | 2016-04-13 | 青岛百键城环保科技有限公司 | 一种低成本新型钢纤维耐火浇注料 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101734934A (zh) * | 2009-10-28 | 2010-06-16 | 郑州真金耐火材料有限责任公司 | 高强度钢纤维浇注料 |
| CN103819203A (zh) * | 2013-10-31 | 2014-05-28 | 江苏顺星耐火科技有限公司 | 莫来石高强耐火浇注料 |
| CN105481380A (zh) * | 2014-09-19 | 2016-04-13 | 青岛百键城环保科技有限公司 | 一种低成本新型钢纤维耐火浇注料 |
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