CN110330346A - 无碳腊石碳化硅质不烧砖及其制备方法 - Google Patents

无碳腊石碳化硅质不烧砖及其制备方法 Download PDF

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CN110330346A
CN110330346A CN201910542537.3A CN201910542537A CN110330346A CN 110330346 A CN110330346 A CN 110330346A CN 201910542537 A CN201910542537 A CN 201910542537A CN 110330346 A CN110330346 A CN 110330346A
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silicon carbide
carbon
parts
cured stone
free cured
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钱元英
蒋才南
匡宇航
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Yixing Xinwei Leeshing Refractory Materials Co Ltd
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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
    • C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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Abstract

本专利属于耐火材料技术领域，本发明提供一种无碳腊石碳化硅质不烧砖，其制备方法，原料配料，按照质量份数，低铝叶腊石60‑85份，90#碳化硅10‑40份，一级矾土10‑20份，苏州机选3#泥3‑8份；再加上适量的结合剂、缓凝剂；运料混练、成型和热处理，制得无碳腊石碳化硅砖。本发明提供的无碳腊石碳化硅质不烧砖及其制备方法，制成无碳腊石碳化硅质不烧制品，应用于铁水包、混铁炉（車）、鱼雷罐上，既能降低这些铁水储存、运输、处理设备耐火炉衬的生产使用成本，又有望改善提高其耐火内衬的使用寿命和炉龄。

Description

无碳腊石碳化硅质不烧砖及其制备方法
技术领域
本发明专利属于耐火材料技术领域，具体为无碳腊石碳化硅质不烧砖及其制备方法。
背景技术
我国是世界上钢铁生产和消费第一大国，铁水包、鱼雷罐、混铁炉（車）等高温铁水储存、运输和处理设备众多，其内衬耐火材料消耗大。传统的铝碳化硅碳砖在抗热震性、抗渣粘接、侵蚀渗透和抗氧化性能上依然不够理想。
发明内容
针对上述技术问题，本发明提供一种无碳腊石碳化硅质不烧砖，使用中耐热震性好，抗剥落；抗渣侵蚀渗透性能好，体积稳定，不沾炉渣，可望持续提高这些设备内衬耐火材料的使用炉龄和寿命。
具体技术方案为：
本发明提供一种无碳腊石碳化硅质不烧砖，其制备方法，包括以下步骤：
（1）原料配料，按照质量份数，低铝叶腊石60-85份，90#碳化硅10-40份，一级矾土 10-20份，苏州机选3#泥3-8份；再加上适量的结合剂、缓凝剂；
（2）运料混练、成型和热处理，制得无碳腊石碳化硅砖。
所述的结合剂为以下物质中的一种或多种混合：质量85%浓度正磷酸溶液，水玻璃RM-Ⅲ、液状水玻璃。
所述的缓凝剂为柠檬酸或草酸中一种。
所述的热处理温度为272-295℃。
叶腊石是一种天然层状的含水铝硅酸盐矿物，耐火度大于 1700℃ 。在1100℃～1300℃ ，叶蜡石逐渐分解，形成高温稳定的莫来石和方石英相。无碳腊石碳化硅砖充分利用腊石、碳化硅的基本性能，制品在中低温即开始烧结致密化，体积不收缩，温度急变时不碎裂，能经受钢渣和金属的冲击，有较强的蠕变能力，抗炉渣渗透侵蚀性能优越 。
由于叶腊石在1100℃～1300℃ ，叶蜡石逐渐分解，形成高温稳定的莫来石和方石英相，很好地保护了碳化硅不被氧化；而碳化硅硬度大、耐火度高、热膨胀系数低，抗炉渣侵蚀性能好，两者结合，无碳腊石碳化硅砖使用性能非常理想。
腊石碳化硅砖化学稳定性好，耐酸碱腐蚀性能好。
本发明提供的无碳腊石碳化硅质不烧砖及其制备方法，制成无碳腊石碳化硅质不烧制品，应用于铁水包、混铁炉（車）、鱼雷罐上，既能降低这些铁水储存、运输、处理设备耐火炉衬的生产使用成本，又有望改善提高其耐火内衬的使用寿命和炉龄。
具体实施方式
结合实施例说明本发明的具体技术方案。
实施例1
无碳腊石碳化硅砖的制备方法，包括以下步骤：原料配料，按照质量份数，腊石70份，碳化硅25份，苏州机选3#泥5份，柠檬酸0.5份，正磷酸85%溶液3份，水1份，配料、混练和机压成型，272-295℃热处理18小时，质检包装待用。
实施例2
无碳腊石碳化硅砖的制备方法，包括以下步骤：原料配料，按照质量份数，腊石83份，碳化硅12份，苏州机选3#泥5份，柠檬酸0.5份，正磷酸85%溶液3份，水1份，配料、混练和机压成型，272-295℃热处理18小时，质检包装待用。
实施例3
无碳腊石碳化硅砖的制备方法，包括以下步骤：原料配料，按照质量份数，腊石74份，碳化硅11份，一级矾土15份，柠檬酸0.5份，正磷酸85%溶液3份，水1份，配料、混练和机压成型，272-295℃热处理18小时，质检包装待用。
实施例4
无碳腊石碳化硅砖的制备方法，包括以下步骤：原料配料，按照质量份数，腊石83份，碳化硅12份，苏州机选3#泥5份，水玻璃粉RM-Ⅲ3份，液态水玻璃1.4份，水1.1配料、混练和机压成型，272-295℃热处理18小时，质检包装待用。

Claims (5)

1.无碳腊石碳化硅质不烧砖的制备方法，其特征在于，包括以下步骤：
（1）原料配料，按照质量份数，低铝叶腊石60-85份，90#碳化硅10-40份，一级矾土 10-20份，苏州机选3#泥3-8份；再加上适量的结合剂、缓凝剂；
（2）运料混练、成型和热处理，制得无碳腊石碳化硅砖。
2.根据权利要求1所述的无碳腊石碳化硅质不烧制品的制备方法，其特征在于，所述的结合剂为以下物质中的一种或多种混合：质量85%浓度正磷酸溶液，水玻璃RM-Ⅲ、液状水玻璃。
3.根据权利要求1所述的无碳腊石碳化硅质不烧制品的制备方法，其特征在于，所述的缓凝剂为柠檬酸或草酸中一种。
4.根据权利要求1所述的无碳腊石碳化硅质不烧制品的制备方法，其特征在于，所述的热处理温度为272-295℃。
5.无碳腊石碳化硅质不烧砖，其特征在于，由权利要求1到4制备所得。
CN201910542537.3A 2019-06-21 2019-06-21 无碳腊石碳化硅质不烧砖及其制备方法 Pending CN110330346A (zh)

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Application publication date: 20191015