CN106830953A - 一种湿法高强耐碱耐火喷注料 - Google Patents
一种湿法高强耐碱耐火喷注料 Download PDFInfo
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Abstract
本发明公开了一种湿法高强耐碱耐火喷注料,按重量百分比计算,组成为:焦宝石40‑50%;莫来石颗粒10‑20%;板状刚玉细粉10‑15%;氧化铝微粉5‑10%;二氧化硅微粉3‑8%;纯铝酸钙水泥5‑10%;复合耐碱粉4‑8%;减水剂0.5‑2%;流平剂0.5‑2%;缓凝剂0.5‑1%;速凝剂0.5‑2%;防爆纤维0.2‑0.5%。本发明的有益效果:通过对现有技术中的喷注料组分进行改进,加高效减水剂和流平剂,使浇注料在极少的加水量下可以达到自流的效果,减少喷注过程中材料运输的困难的问题;经过泵送到枪口上,自流浇注料加入速凝剂使材料喷射到带有锚固钉的钢壳上能够紧密结合,加强喷注成型后喷涂层的强度,加入复合耐碱粉,加强喷注成型后喷涂层的耐碱性能。
Description
技术领域
本发明涉及一种喷注料,具体来说,涉及一种湿法高强耐碱耐火喷注料。
背景技术
喷注料是利用气动工具以机械喷射方法施工的不定形耐火材料,在喷涂过程中水泥与骨料等组成材料反复连续冲击促使喷射出的物料压实,喷涂层具有较好的致密度和力学强度,在水泥生产线上被广泛使用,具体施工方法根据加水的顺序和用水量分为湿法、半干法和干法喷涂料三种。水泥生产线中预热器和窑头罩由于其处在高碱度及高温度的环境特性,浇注料很容易损坏,出现垮塌现象,而传统的用于湿法的喷注料由于其施工结构复杂,支模费时费力,施工材料运输困难,加水过多导致浇注体强度低下,难以满足预热器和窑头罩对浇注料的要求。
针对相关技术中的问题,目前尚未提出有效的解决方案。
发明内容
针对相关技术中的上述技术问题,本发明提出一种专门用于水泥窖生产线上预热器和窑头罩用的湿法高强耐碱耐火喷注料,能够满足预热器和窑头罩对浇注料的苛刻条件,在极少的加水量下既可以达到自流的效果,将浇注料喷射在带有锚固钉的钢壳上能够进别结合。
为实现上述技术目的,本发明的技术方案是这样实现的:
一种湿法高强耐碱耐火喷注料,其特征在于,按重量百分比计算,组成为:焦宝石40-50%;莫来石颗粒10-20%;板状刚玉细粉10-15%;氧化铝微粉5-10%;二氧化硅微粉3-8%;纯铝酸钙水泥5-10%;复合耐碱粉4-8%;减水剂0.5-2%;流平剂0.5-2%;缓凝剂0.5-1%;速凝剂0.5-2%;防爆纤维0.2-0.5%。
进一步地,按重量百分比计算,所述复合耐碱粉组成为:碳化硅10-20%、锆英砂10-20%、电熔镁砂60-80%。
进一步地,所述减水剂为萘系减水剂。
进一步地,所述缓凝剂为柠檬酸。
进一步地,按重量百分比计算,所述速凝剂组成为:铝氧熟料40%;碳酸钠40%;生石灰20%。
进一步地,焦宝石骨料粒度为1-5mm;莫来石颗粒粒度为1-5mm;板状刚玉细粉粒度为325目;氧化铝微粉粒度为1-3μm;二氧化硅微粉粒度为0.1-0.3μm;纯铝酸钙水泥比表面积5500g/cm2。
本发明所述的喷注料,尤其适合作为水泥窖生产线上预热器和窑头罩使用的湿法高强耐碱耐火喷注料。本发明选用焦宝石(也称为一级硬质粘土熟料)作为浇注料的骨料,要求Al2O3≥44%,Fe2O3<1.5%。焦宝石是一种优质硬质耐火粘土,成分稳定,质地均匀、结构致密,按重量百分比计算,用40-50%的焦宝石及10-20%的莫来石颗粒作为骨料,添加10-15%的板状刚玉细粉,制成的喷注料在使用过程中具有很高的强度。其中,板状刚玉是一种纯净的、不添加如MgO、B2O3等任何添加剂而烧成收缩彻底的烧结刚玉,具有结晶粗大、发育良好的α- Al2O3晶体结构,Al2O3的含量在99%以上。板片状晶体结构,气孔小且闭气孔较多而气孔率与电熔刚玉大体相当,纯度高,体积稳定性好,极小的重烧收缩。莫来石本身具有耐高温、热膨胀小河康化学侵蚀强等特点。采用焦宝石、莫来石颗粒作为喷注料骨料添加板状刚玉得出的成品喷注料韧性强,能够很好地提高成品的强度和抗冲刷性能,高温下抗氧化性能强,不易爆裂,能够显著提喷注料的高使用寿命。
纯铝酸钙水泥作为喷注料的促硬剂,掺加氧化铝微粉,在喷注料混合搅拌时,两种材料同时添加,可以保证喷注料在成型时保证有良好的流动性,在成型后限定的时间内,能使喷注料获得足够的强度。
加入高效减水剂和流平剂的作用是,使材料在极少的加水量可以达到自流效果。经过泵送到枪口上,自流浇注料加入速凝剂使材料喷射到带有锚固钉的钢壳上紧密结合。水的加入量为所述喷注料重量的6-8%左右。其中,高效减水剂与流平剂属于本领域常用试剂材料,可从商业途径获得。减水剂优选为萘系减水剂。
加入缓凝剂与促凝剂可以使喷注料在喷枪口均匀分散,喷到墙体上达到立刻凝固,或是不流淌的效果。其中,缓凝剂使喷注料在出喷枪口前不凝固并达到很好的流动。其中,促凝剂可以使浇注料从枪口喷射至带有锚固钉的钢壳上时,能够与钢壳紧密结合,成型后的浇注料强度高,不会发生垮塌现象。其中,缓凝剂与促凝剂属于本领域常用试剂材料,可从商业途径获得。缓凝剂优选为柠檬酸。本申请还提供一种具体的速凝剂组成:铝氧熟料40%;碳酸钠40%;生石灰20%。
加入复合耐碱粉的作用是,加强喷注料喷注成型后的耐碱性能。按重量百分比计算,所述复合耐碱粉组成为:碳化硅10-20%、锆英砂10-20%、电熔镁砂60-80%。
本发明的有益效果:通过对现有技术中的喷注料组分进行改进,加高效减水剂和流平剂,使浇注料在极少的加水量下可以达到自流的效果,减少喷注过程中材料运输的困难的问题;经过泵送到枪口上,自流浇注料加入速凝剂使材料喷射到带有锚固钉的钢壳上能够紧密结合,加强喷注成型后喷涂层的强度,加入复合耐碱粉,加强喷注成型后喷涂层的耐碱性能。
具体实施方式
以下结合具体实施例对本发明的湿法高强耐碱耐火喷注料作进一步的详细描述,其仅用于解释本发明,不用于限制本发明,本发明所涉及的具体原材料均可从商业途径获得:
实施例一:
焦宝石45Kg;莫来石颗粒15Kg;板状刚玉细粉12Kg;氧化铝微粉6Kg;二氧化硅微粉4Kg;纯铝酸钙水泥6Kg;复合耐碱粉6Kg;减水剂1.5Kg;流平剂1.5Kg;缓凝剂1Kg;速凝剂1.5Kg;防爆纤维0.5Kg。于搅拌设备中充分搅拌均匀后得到成品。
其中,原材料满足如下指标:焦宝石骨料粒度为1-5mm;莫来石颗粒粒度为1-5mm;板状刚玉细粉粒度为325目;氧化铝微粉粒度为1-3μm;二氧化硅微粉粒度为0.1-0.3μm;纯铝酸钙水泥比表面积5500g/cm2。
其中,复合耐碱粉共6Kg,碳化硅0.6Kg,锆英砂0.6Kg,电熔镁砂4.8Kg。
其中,减水剂共1.5Kg,为萘系减水剂。
其中,流平剂共1.5Kg。
其中,缓凝剂共1Kg,为柠檬酸。
其中,速凝剂共1.5Kg,铝氧熟料0.6Kg,碳酸钠0.6Kg,生石灰0.3Kg。
经测定,成品的物理性能满足:110℃×24h体积密度为:2.6g/cm3;110℃×24h抗折强度为:11.6MPa;1450℃×3h抗折强度为:14.5MPa;110℃×24h 耐压强度为:100.2MPa;1450℃×3h耐压强度为:135.1MPa。
实施例二:
焦宝石40Kg;莫来石颗粒18Kg;板状刚玉细粉13Kg;氧化铝微粉7Kg;二氧化硅微粉5Kg;纯铝酸钙水泥5Kg;复合耐碱粉7Kg;减水剂1.2Kg;流平剂1.2Kg;缓凝剂0.8Kg;速凝剂1.5Kg;防爆纤维0.3Kg。于搅拌设备中充分搅拌均匀后得到成品。
其中,原材料满足如下指标:焦宝石骨料粒度为1-5mm;莫来石颗粒粒度为1-5mm;板状刚玉细粉粒度为325目;氧化铝微粉粒度为1-3μm;二氧化硅微粉粒度为0.1-0.3μm;纯铝酸钙水泥比表面积5500g/cm2。
其中,复合耐碱粉共7Kg,碳化硅0.7Kg,锆英砂0.14Kg,电熔镁砂4.9Kg。
其中,减水剂共1.2Kg,为萘系减水剂。
其中,流平剂共1.2Kg。
其中,缓凝剂共0.8Kg,为柠檬酸。
其中,速凝剂共1.5Kg,铝氧熟料0.6Kg,碳酸钠0.6Kg,生石灰0.3Kg。经测定,成品的物理性能满足:110℃×24h体积密度为:2.55g/cm3;110℃×24h抗折强度为:11.2MPa;1450℃×3h抗折强度为:13.2MPa;110℃×24h 耐压强度为:91.2MPa;1450℃×3h耐压强度为:103.5MPa。
实施例三:
焦宝石50Kg;莫来石颗粒11Kg;板状刚玉细粉11Kg;氧化铝微粉8Kg;二氧化硅微粉3Kg;纯铝酸钙水泥9Kg;复合耐碱粉4Kg;减水剂0.8Kg;流平剂1.3Kg;缓凝剂0.8Kg;速凝剂0.8Kg;防爆纤维0.3Kg。于搅拌设备中充分搅拌均匀后得到成品。
其中,原材料满足如下指标:焦宝石骨料粒度为1-5mm;莫来石颗粒粒度为1-5mm;板状刚玉细粉粒度为325目;氧化铝微粉粒度为1-3μm;二氧化硅微粉粒度为0.1-0.3μm;纯铝酸钙水泥比表面积5500g/cm2。
其中,复合耐碱粉共4Kg,碳化硅0.8Kg,锆英砂0.8Kg,电熔镁砂2.4Kg。
其中,减水剂共0.8Kg,为萘系减水剂。
其中,流平剂共1.3Kg。
其中,缓凝剂共0.8Kg,为柠檬酸。
其中,速凝剂共0.8Kg,铝氧熟料0.32Kg,碳酸钠0.32Kg,生石灰0.16Kg。经测定,成品的物理性能满足:110℃×24h体积密度为:2.63g/cm3;110℃×24h抗折强度为:13.5MPa;1450℃×3h抗折强度为:15.3MPa;110℃×24h 耐压强度为:132.2MPa;1450℃×3h耐压强度为:146.3MPa。
Claims (6)
1.一种湿法高强耐碱耐火喷注料,其特征在于,按重量百分比计算,组成为:焦宝石40-50%;莫来石颗粒10-20%;板状刚玉细粉10-15%;氧化铝微粉5-10%;二氧化硅微粉3-8%;纯铝酸钙水泥5-10%;复合耐碱粉4-8%;减水剂0.5-2%;流平剂0.5-2%;缓凝剂0.5-1%;速凝剂0.5-2%;防爆纤维0.2-0.5%。
2.根据权利要求1所述的一种湿法高强耐碱耐火喷注料,其特征在于,按重量百分比计算,所述复合耐碱粉组成为:碳化硅10-20%、锆英砂10-20%、电熔镁砂60-80%。
3.根据权利要求1所述的一种湿法高强耐碱耐火喷注料,其特征在于,所述减水剂为萘系减水剂。
4.根据权利要求1所述的一种湿法高强耐碱耐火喷注料,其特征在于,所述缓凝剂为柠檬酸。
5.根据权利要求1所述的一种湿法高强耐碱耐火喷注料,其特征在于,按重量百分比计算,所述速凝剂组成为:铝氧熟料40%;碳酸钠40%;生石灰20%。
6.根据权利要求1所述的一种湿法高强耐碱耐火喷注料,其特征在于,原材料的满足如下指标:焦宝石骨料粒度为1-5mm;莫来石颗粒粒度为1-5mm;板状刚玉细粉粒度为325目;氧化铝微粉粒度为1-3μm;二氧化硅微粉粒度为0.1-0.3μm;纯铝酸钙水泥比表面积5500g/cm2。
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