CN112028646A - 一种刚玉莫来石质不沾铝浇注料及其制备方法 - Google Patents
一种刚玉莫来石质不沾铝浇注料及其制备方法 Download PDFInfo
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- 229910052863 mullite Inorganic materials 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 69
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 53
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 35
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 34
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 22
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 18
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 16
- 239000002105 nanoparticle Substances 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 238000012856 packing Methods 0.000 claims abstract description 6
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 7
- 159000000009 barium salts Chemical class 0.000 claims description 7
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 7
- 150000003751 zinc Chemical class 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 6
- 230000001112 coagulating effect Effects 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000035515 penetration Effects 0.000 abstract description 5
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 239000011819 refractory material Substances 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 abstract description 3
- 230000035939 shock Effects 0.000 abstract description 3
- 229910002065 alloy metal Inorganic materials 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000004321 preservation Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明涉及耐火材料技术领域，具体是一种刚玉莫来石质不沾铝浇注料及其制备方法。包括以下重量份的原料：高铝矾土70‑90份、镁砂20‑40份、水玻璃5‑15份、金属铝粉1‑3份、微米级细粉1‑5份及余量纳米级细粉。本发明通过选用高纯度的高铝矾土为原料，加入镁砂为辅料，加入防铝渗透的金属铝粉，采用基质增强技术，添加微米级细粉及纳米级细粉，添加水玻璃，按最紧密堆积原理，按照本发明的粒级配合，常温下混合，养护后凝结硬化即得具有高强度、抗热震性好、耐磨耐腐蚀性高并具有不沾铝及其合金金属侵蚀的浇注料，使其从烘干直至使用的过程中不脱落开裂，并在使用过程中逐渐烧结，形成均匀的致密层，对工作面起到保护作用而不沾铝及合金溶液的冲刷、侵蚀及渗透。
Description
技术领域
本发明涉及耐火材料技术领域，具体是一种刚玉莫来石质不沾铝浇注料及其制备方法。
背景技术
反射炉、保持炉是铝加工行业常用的熔炼设备和铝水保温设备，随着熔铝炉的大型化和强化治炼，表面火焰温度有1200℃-1300℃，铝及铝合金中的Mg、Mn、Si等都很活泼，750℃铝的黏度和20℃的水差不多时金属铝及合金溶液易渗入耐火材料中，很容易与耐火材料中的一些组元如SiO2、Fe203、Tio2发生氧化还原反应；一些合金元素如镁有很高的蒸汽压，其蒸汽比铝液更容易渗入耐火材料内，随之被氧化。这些因素使炉衬材料产生结构剥落，造成耐火材料的破坏。
发明内容
本发明要解决的技术问题是提供一种抗渗性能好、高强度、耐腐蚀及不沾铝的刚玉莫来石质不沾铝浇注料及其制备方法。
为了解决上述技术问题，本发明的技术方案为：一种刚玉莫来石质不沾铝浇注料，包括以下重量份的原料：高铝矾土70-90份、镁砂20-40份、水玻璃5-15份、金属铝粉1-3份、微米级细粉1-5份及余量纳米级细粉。
包括以下重量份的原料：高铝矾土75-85份、镁砂25-35份、水玻璃8-12份、金属铝粉1.5-2.5份、微米级细粉2-4份及余量纳米级细粉。
包括以下重量份的原料：高铝矾土80份、镁砂30份、水玻璃10份、金属铝粉2份、微米级细粉3份及余量纳米级细。
所述微米级细粉为氧化铬、钡盐、锌盐中的一种或多种。
所述纳米级细粉为氧化铝。
所述微米级细粉的粒度为38-48um。
所述纳米级细粉的粒度为200-400nm。
一种刚玉莫来石质不沾铝浇注料的制备方法，包括以下步骤：
1）选取Al2O3含量为90%的高铝矾土与镁砂通过破碎机破碎后过筛，筛分成粒径为不大于4.75mm的骨料；
2）向骨料中加入水玻璃、金属铝粉、微米级细粉及纳米细粉，按最紧密的堆积原理，在常温下混合搅拌均匀，养护24小时后凝结硬化即得浇注料。
与现有技术相比，本发明的有益效果为：
本发明通过选用高纯度的高铝矾土为原料，加入镁砂为辅料，同时，加入防铝渗透的金属铝粉，采用基质增强技术，添加微米级细粉及纳米级细粉，采用水玻璃为结合剂，按最紧密堆积原理，按照本发明的粒级配合，常温下均匀混合，养护后凝结硬化即得具有高强度、抗热震性好、耐磨耐腐蚀性高并具有不沾铝及其合金金属侵蚀的浇注料，使其从烘干直至使用的过程中不脱落开裂，并在使用过程中逐渐烧结，形成均匀的致密层，对工作面起到保护作用而不沾铝及合金溶液的冲刷、侵蚀及渗透。采用微米级细粉及纳米级细粉、能增加本发明的致密度，减少气孔，从而减少渗透通道。
具体实施方式
下面对本发明的具体实施方式作进一步说明。在此需要说明的是，对于这些实施方式的说明用于帮助理解本发明，但并不构成对本发明的限定。此外，下面所描述的本发明各个实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互组合。
实施例1
本实施例的刚玉莫来石质不沾铝浇注料，包括以下重量份的原料：高铝矾土70份、镁砂40份、水玻璃15份、金属铝粉3份、微米级细粉5份及余量纳米级细粉。
微米级细粉为氧化铬、钡盐、锌盐中的一种或多种。
纳米级细粉为氧化铝。
微米级细粉的粒度为38-48um。
纳米级细粉的粒度为200-400nm。
实施例2
本实施例的刚玉莫来石质不沾铝浇注料，包括以下重量份的原料：高铝矾土90份、镁砂20份、水玻璃5份、金属铝粉1份、微米级细粉1份及余量纳米级细粉。
微米级细粉为氧化铬、钡盐、锌盐中的一种或多种。
纳米级细粉为氧化铝。
微米级细粉的粒度为38-48um。
纳米级细粉的粒度为200-400nm。
实施例3
本实施例的刚玉莫来石质不沾铝浇注料，包括以下重量份的原料：高铝矾土75份、镁砂35份、水玻璃12份、金属铝粉2.5份、微米级细粉4份及余量纳米级细粉。
微米级细粉为氧化铬、钡盐、锌盐中的一种或多种。
纳米级细粉为氧化铝。
微米级细粉的粒度为38-48um。
纳米级细粉的粒度为200-400nm。
实施例4
本实施例的刚玉莫来石质不沾铝浇注料，包括以下重量份的原料：高铝矾土85份、镁砂25份、水玻璃8份、金属铝粉1.5份、微米级细粉2份及余量纳米级细粉。
微米级细粉为氧化铬、钡盐、锌盐中的一种或多种。
纳米级细粉为氧化铝。
微米级细粉的粒度为38-48um。
纳米级细粉的粒度为200-400nm。
实施例5
本实施例的刚玉莫来石质不沾铝浇注料，包括以下重量份的原料：高铝矾土80份、镁砂30份、水玻璃10份、金属铝粉2份、微米级细粉3份及余量纳米级细。
微米级细粉为氧化铬、钡盐、锌盐中的一种或多种。
纳米级细粉为氧化铝。
微米级细粉的粒度为38-48um。
纳米级细粉的粒度为200-400nm。
上述实施例中，通过选用高纯度的高铝矾土为原料，加入镁砂为辅料，同时，加入防铝渗透的金属铝粉，采用基质增强技术，添加微米级细粉及纳米级细粉，采用水玻璃为结合剂，按最紧密堆积原理，按照本发明的粒级配合，常温下均匀混合，养护后凝结硬化即得具有高强度、抗热震性好、耐磨耐腐蚀性高并具有不沾铝及其合金金属侵蚀的浇注料，使其从烘干直至使用的过程中不脱落开裂，并在使用过程中逐渐烧结，形成均匀的致密层，对工作面起到保护作用而不沾铝及合金溶液的冲刷、侵蚀及渗透。采用微米级细粉及纳米级细粉、能增加本发明的致密度，减少气孔，从而减少渗透通道。
本发明的制备方法如下：
1）选取Al2O3含量为90%的高铝矾土与镁砂通过破碎机破碎后过筛，筛分成粒径为不大于4.75mm的骨料；
2）向骨料中加入水玻璃、金属铝粉、微米级细粉及纳米细粉，按最紧密的堆积原理，在常温下混合搅拌均匀，养护24小时后凝结硬化即得浇注料。
采用本发明的配比按照本发明的制备方法制备出的浇注料具有以下物理指标：
上述表格中，实施例1对应普通型、实施例2对应第一个加强型，实施例3对应第二加强型，实施例4对应高强型-1，实施例5对应高强型-2。
本发明还可以应用于大型、强化冶炼的熔铝炉、保温炉，起到防止铝及合金溶液、蒸汽的渗透、冲刷、侵蚀，提高其使用寿命。
以上对本发明的实施方式作了详细说明，但本发明不限于所描述的实施方式。对于本领域的技术人员而言，在不脱离本发明原理和精神的情况下，对这些实施方式进行多种变化、修改、替换和变型，仍落入本发明的保护范围内。
Claims (8)
1.一种刚玉莫来石质不沾铝浇注料，其特征在于，包括以下重量份的原料：高铝矾土70-90份、镁砂20-40份、水玻璃5-15份、金属铝粉1-3份、微米级细粉1-5份及余量纳米级细粉。
2.根据权利要求1所述的刚玉莫来石质不沾铝浇注料，其特征在于，包括以下重量份的原料：高铝矾土75-85份、镁砂25-35份、水玻璃8-12份、金属铝粉1.5-2.5份、微米级细粉2-4份及余量纳米级细粉。
3.根据权利要求2所述的刚玉莫来石质不沾铝浇注料，其特征在于，包括以下重量份的原料：高铝矾土80份、镁砂30份、水玻璃10份、金属铝粉2份、微米级细粉3份及余量纳米级细。
4.根据权利要求3所述的刚玉莫来石质不沾铝浇注料，其特征在于：所述微米级细粉为氧化铬、钡盐、锌盐中的一种或多种。
5.根据权利要求3所述的刚玉莫来石质不沾铝浇注料，其特征在于：所述纳米级细粉为氧化铝。
6.根据权利要求4所述的刚玉莫来石质不沾铝浇注料，其特征在于：所述微米级细粉的粒度为38-48um。
7.根据权利要求5所述的刚玉莫来石质不沾铝浇注料，其特征在于：所述纳米级细粉的粒度为200-400nm。
8.根据权利要求1-7任一项所述的刚玉莫来石质不沾铝浇注料的制备方法，其特征在于，包括以下步骤：
1）选取Al2O3含量为90%的高铝矾土与镁砂通过破碎机破碎后过筛，筛分成粒径为不大于4.75mm的骨料；
2）向骨料中加入水玻璃、金属铝粉、微米级细粉及纳米细粉，按最紧密的堆积原理，在常温下混合搅拌均匀，养护24小时后凝结硬化即得浇注料。
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