CN113800916A - 一种预砌筑的碳化硅质耐火泥浆 - Google Patents
一种预砌筑的碳化硅质耐火泥浆 Download PDFInfo
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- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 72
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 35
- 238000010276 construction Methods 0.000 title abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 10
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 10
- 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 9
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 claims abstract description 8
- 239000002683 reaction inhibitor Substances 0.000 claims abstract description 7
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims description 31
- 239000002245 particle Substances 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- FJLUATLTXUNBOT-UHFFFAOYSA-N 1-Hexadecylamine Chemical group CCCCCCCCCCCCCCCCN FJLUATLTXUNBOT-UHFFFAOYSA-N 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000011449 brick Substances 0.000 abstract description 9
- 238000000605 extraction Methods 0.000 abstract description 6
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004568 cement Substances 0.000 abstract description 2
- 239000011469 building brick Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明公开了一种预砌筑的碳化硅质耐火泥浆，其特征在于组成按重量百分数计如下：碳化硅0.5‑0mm10‑35％；碳化硅0.044‑0mm30‑50％；碳化硅抽尘粉6‑23％；氮化硅粉3‑10％；单质硅粉1‑4％；氧化铝微粉1‑6％；反应抑制剂1‑2％；铝酸钙水泥2‑4％；在以上基础上外加占比35‑42wt％的磷酸二氢铝溶液；本发明提供的碳化硅质耐火泥浆常温下即可固化，产生较高的粘结强度，使砖砌体成为牢固整体，再通过机械将牢固粘结的砖砌体吊装到其使用位置，避免了现场作业人员必须在狭窄的作业空间内砌砖，提高了工作效率和施工质量，保证了施工作业的安全性。
Description
技术领域
本发明属于不定型耐火材料，具体涉及一种预砌筑的碳化硅质耐火泥浆。
背景技术
碳化硅质泥浆主要用于工业窑炉中砌筑碳化硅砖。在目前国内高炉热风炉等工业窑炉的基建中，由于耐火泥浆使用位置的空间限制，作业人员无法安全高效的施工，为了保证施工质量，提高施工效率，采取了在地面砌筑碳化硅砖，待砌筑好的碳化硅砖经泥浆粘结形成牢固整体以后，再采用机械吊装到高炉本体相应的位置上安装。由此需要开发一种特殊的碳化硅质泥浆，这种泥浆除了应该具备传统泥浆的功能以外，还应该具备常温下即可较快的干燥硬化，并在硬化过程中产生较高的粘结强度，将碳化硅质砖粘结在一起成为一个牢固的整体。
发明内容
本发明目的在于提供一种预砌筑后可整体吊装的碳化硅质耐火泥浆，该耐火泥浆无需困料，搅拌好以后可以立即施工，且泥浆的可施工时间较长，砌筑后常温即可较快硬化，产生较高的常温粘结强度，满足现场吊装要求，提高施工效率和安全性；该泥浆满足在高温使用条件下，高温粘结强度较高，高温使用性能较好。
为达到上述目的，采用技术方案如下：
一种预砌筑的碳化硅质耐火泥浆，其组成按重量百分数计如下：
在以上基础上外加占比35-42wt％的磷酸二氢铝溶液。
按上述方案，采用的碳化硅0.5-0mm、碳化硅0.044-0mm粒度分布范围分别为0.5-0mm及0.044-0mm，碳化硅含量≥90wt％。
按上述方案，碳化硅抽尘粉来源于生产碳化硅过程中的废弃烟尘收集物，碳化硅含量≥95％wt，粒度≤20um。
按上述方案，所述的氮化硅粉粒度范围为0.088-0mm，氮化硅含量≥95wt％。
按上述方案，所述单质硅粉粒度范围为0.088-0mm，硅含量为≥98wt％。
按上述方案，所述氧化铝微粉中氧化铝含量≥99wt％，d50≤2.5um。
按上述方案，所述的磷酸二氢铝溶液由浓磷酸和氢氧化铝反应生成，溶液浓度≥1.20g/ml。
按上述方案，所述的反应抑制剂是一种十六烷胺。
在碳化硅质耐火泥浆中添加这种超细的碳化硅抽尘粉有利于提高耐火泥浆的碳化硅含量，增加泥浆的和易性。
氧化铝微粉可以在耐火泥浆中起到增强泥浆致密性、提高强度的作用，在碳化硅质泥浆中，氧化铝微粉可以在高温下和碳化硅氧化生成的二氧化硅以及单质硅氧化生成的二氧化硅反应生成莫来石网络状分布在耐火泥浆中，有利于提高耐火泥浆高温强度和致密度。
单质硅在纯氮气环境中600℃以上即可明显反应形成氮化硅。单质硅在高温下同样容易被氧化，在碳化硅质泥浆使用过程中，单质硅会优先于碳化硅和接触到的热空气反应生成二氧化硅和氮化硅，覆盖在砌体缝隙表面，抵御砌缝进一步侵蚀扩大，起到抗氧化并提高材料强度的作用。
铝酸钙水泥主要起到使碳化硅质泥浆常温固化，并产生较高的常温粘结强度，实现砌体整体吊装，提高施工效率和质量。
反应抑制剂十六烷胺具有极性基团，可以迅速附在金属表面形成一层致密的膜，保护金属表面不受侵蚀。在耐火泥浆中抑制了磷酸二氢铝和原料中杂质铁的反应，有效避免了搅拌好的泥浆在现场容易鼓胀、变干导致无法施工的问题。
相对于现有技术，本发明的有益效果为：
本发明提供的碳化硅质耐火泥浆常温下即可固化，产生较高的粘结强度，使砖砌体成为牢固整体，再通过机械将牢固粘结的砖砌体吊装到其使用位置。避免了现场作业人员必须在狭窄的作业空间内砌砖，提高了工作效率和施工质量，保证了施工作业的安全性。
在碳化硅质泥浆中添加了较多碳化硅抽尘粉废料，这种抽尘粉粒度细，碳化硅含量高，有利于节约资源，用于耐火泥浆中有利于改善泥浆和易性并提高碳化硅含量。
在泥浆中添加了反应抑制剂，有效抑制了泥浆的鼓胀，改善了泥浆的施工性能。
具体实施方式
以下实施例进一步阐释本发明的技术方案，但不作为对本发明保护范围的限制。
具体实施方式中所用原料：
碳化硅0.5-0mm、碳化硅0.044-0mm粒度分布范围分别为0.5-0mm及0.044-0mm，碳化硅含量≥90wt％。
碳化硅抽尘粉来源于生产碳化硅过程中的废弃烟尘收集物，碳化硅含量≥95％wt，粒度≤20um。
氮化硅粉粒度范围为0.088-0mm，氮化硅含量≥95wt％。
单质硅粉粒度范围为0.088-0mm，硅含量为≥98wt％。
氧化铝微粉中氧化铝含量≥99wt％，d50≤2.5um。
磷酸二氢铝溶液由浓磷酸和氢氧化铝反应生成，溶液浓度≥1.20g/ml。
反应抑制剂是一种十六烷胺，来源于湖北世腾化工科技有限公司。
实施例1
提供一种预砌筑的碳化硅质耐火泥浆，按重量百分数计：
本实施例提供的碳化硅质耐火泥浆的性能指标测试结果参见表1。
实施例2
提供一种预砌筑的碳化硅质耐火泥浆，按重量百分数计：
本实施例提供的碳化硅质耐火泥浆的性能指标测试结果参见表1。
实施例3
提供一种预砌筑的碳化硅质耐火泥浆，按重量百分数计：
本实施例提供的碳化硅质耐火泥浆的性能指标测试结果参见表1。
表1实施例1-3中的碳化硅质耐火泥浆的性能指标测试
表1显示，本发明实施例1-3提供的碳化硅质耐火泥浆，砌筑后在空气中，5℃以上温度条件下养护1天，其粘结强度达到了3MPa以上，而且随着养护时间延长，其粘结强度逐渐增长，能够满足现场吊装要求。
实施例4
一种预砌筑的碳化硅质耐火泥浆，按重量百分数计：
本实施例提供的碳化硅质耐火泥浆的性能指标测试结果参见表2。
实施例5
一种预砌筑的碳化硅质耐火泥浆，按重量百分数计，由以下组分组成：
本实施例提供的碳化硅质耐火泥浆的性能指标测试结果参见表2。
实施例6
一种预砌筑的碳化硅质耐火泥浆，按重量百分数计，由以下组分组成：
本实施例提供的碳化硅质耐火泥浆的性能指标测试结果参见表2。
对比例
一种预砌筑的碳化硅质耐火泥浆，按重量百分数计，由以下组分组成：
表2实施例4-6及对比例中的碳化硅质耐火泥浆的性能指标测试
表2显示，对比例中未添加反应抑制剂，试样的粘结强度非常低，搅拌好的泥浆在空气中放置半个小时后，可以明显观察到泥浆变得非常干，难以涂抹施工，且泥浆内部有很多气泡，泥浆像发酵的面团一样鼓涨。这主要是由于泥浆中的杂质铁等和磷酸二氢铝溶液反应是个放热反应，反应消耗了水分，产生了气体，造成泥浆施工性能恶化，且砌好的砌体强度低，甚至没强度。本发明实施例4-6提供的碳化硅质耐火泥浆，搅拌好以后无需困料即可立刻进行砌筑施工，且可保持长达8h的良好的施工性能，砌筑后在空气中，5℃以上温度条件下养护1天，其粘结强度达到了3MPa以上，而且随着养护时间延长，其粘结强度逐渐增长，能够满足现场吊装要求。
Claims (8)
1.一种预砌筑的碳化硅质耐火泥浆，其特征在于组成按重量百分数计如下：
在以上基础上外加占比35-42wt％的磷酸二氢铝溶液。
2.如权利要求1所述碳化硅质耐火泥浆，其特征在于所述的碳化硅0.5-0mm、碳化硅0.044-0mm粒度分布范围分别为0.5-0mm及0.044-0mm，碳化硅含量≥90wt％。
3.如权利要求1所述碳化硅质耐火泥浆，其特征在于所述的碳化硅抽尘粉来源于生产碳化硅过程中的废弃烟尘收集物，碳化硅含量≥95％wt，粒度≤20um。
4.如权利要求1所述碳化硅质耐火泥浆，其特征在于所述的氮化硅粉粒度范围为0.088-0mm，氮化硅含量≥95wt％。
5.如权利要求1所述碳化硅质耐火泥浆，其特征在于所述单质硅粉粒度范围为0.088-0mm，硅含量为≥98wt％。
6.如权利要求1所述碳化硅质耐火泥浆，其特征在于所述氧化铝微粉中氧化铝含量≥99wt％，d50≤2.5um。
7.如权利要求1所述碳化硅质耐火泥浆，其特征在于所述的磷酸二氢铝溶液由浓磷酸和氢氧化铝反应生成，溶液浓度≥1.20g/ml。
8.如权利要求1所述碳化硅质耐火泥浆，其特征在于所述的反应抑制剂是十六烷胺。
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