CN117303920A - 一种含刚玉的耐火砖及其制备方法 - Google Patents
一种含刚玉的耐火砖及其制备方法 Download PDFInfo
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- 239000011449 brick Substances 0.000 title claims abstract description 91
- 229910052593 corundum Inorganic materials 0.000 title claims abstract description 45
- 239000010431 corundum Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000654 additive Substances 0.000 claims abstract description 23
- 230000000996 additive effect Effects 0.000 claims abstract description 23
- 239000002131 composite material Substances 0.000 claims abstract description 23
- 239000011268 mixed slurry Substances 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 21
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 19
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 19
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 239000005011 phenolic resin Substances 0.000 claims abstract description 17
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 17
- 238000004321 preservation Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 230000032683 aging Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000000227 grinding Methods 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 238000004537 pulping Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 238000005303 weighing Methods 0.000 claims abstract description 7
- 239000002270 dispersing agent Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 12
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 claims description 6
- 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 description 6
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 6
- 229940048086 sodium pyrophosphate Drugs 0.000 claims description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 6
- 235000019818 tetrasodium diphosphate Nutrition 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 2
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 2
- 235000019794 sodium silicate Nutrition 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 238000009991 scouring Methods 0.000 abstract description 5
- 239000011819 refractory material Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 4
- 235000019353 potassium silicate Nutrition 0.000 description 4
- 238000010304 firing Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
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- 239000004566 building material Substances 0.000 description 1
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- 239000011812 mixed powder Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
本发明涉及耐火砖技术领域，具体涉及一种含刚玉的耐火砖及其制备方法，包括以下步骤：步骤1，混合物料：按质量配比称取原料混合均匀后升温并保温，保温完成后碾碎至80‑150目得到混合料；步骤2，混合料制浆：取混合料与复合外加剂和酚醛树脂混合，并加水搅拌均匀后陈化得到混合浆；步骤3，混合浆加压：在对混合浆加压成型，进行制砖，于1200‑1350℃下烘焙4‑5小时得到待烧砖；步骤4，烧制砖：先将待烧砖保温，然后升温至1770‑1790℃,再次保温24‑32小时，制得所述耐火砖。本发明中，通过将碳、碳化硅、刚玉、镁砂等原料进行混合制烧，使耐火砖的耐高温，耐冲刷和抗氧化性能得到了提升。
Description
技术领域
本发明涉及耐火砖技术领域，具体涉及一种含刚玉的耐火砖及其制备方法。
背景技术
耐火材料一般分为两种，即不定型耐火材料和定型耐火材料。不定型耐火材料也叫浇注料，是由多种骨料或集料和一种或多种粘和剂组成的混合粉状颗料，使用时必须和一种或多种液体配合搅拌均匀，具有较强的流动性。定型耐火材料一般指耐火砖，其形状有标准规则，也可以根据需要筑切时临时加工，主要用于矿热炉主体炉衬和铁水包，能耐1，580℃—1，770℃的高温。也叫火砖。具有一定形状和尺寸的耐火材料。按制备工艺方法来划分可分为烧成砖、不烧砖、电熔砖(熔铸砖)、耐火隔热砖；按形状和尺寸可分为标准型砖、普通砖、特异型砖等。可用作建筑窑炉和各种热工设备的高温建筑材料和结构材料，并在高温下能经受各种物理化学变化和机械作用。例如耐火粘土砖、高铝砖、硅砖、镁砖等。
但是现有的耐火砖内部构成及其制烧方法都较为简单，导致耐火砖的耐高温，耐冲刷和抗氧化性能较弱。
发明内容
本发明的目的在于提供一种含刚玉的耐火砖及其制备方法，解决现有技术中耐火砖内部构成及其制烧方法都较为简单，导致耐火砖的耐高温，耐冲刷和抗氧化能力较弱，以及耐火砖制烧质量较低的问题的技术问题。
本发明公开了一种含刚玉的耐火砖制备方法，包括以下步骤：
步骤1，混合物料：按质量配比称取原料混合均匀后升温并保温，保温完成后碾碎至80-150目得到混合料；
步骤2，混合料制浆：取混合料与复合外加剂和酚醛树脂混合，并加水搅拌均匀后陈化得到混合浆；
步骤3，混合浆加压：在对混合浆加压成型，进行制砖，于1200-1350℃下烘焙4-5小时得到待烧砖；
步骤4，烧制砖：先将待烧砖保温，然后升温至1770-1790℃,再次保温24-32小时，制得所述耐火砖。
进一步的，所述步骤1中原料包括碳、碳化硅、刚玉和镁砂。
进一步的，所述步骤1中升温到600-800℃并保温7-9小时。
进一步的，所述步骤2中陈化5-6天。
进一步的，所述步骤4中先将待烧砖于1000-1200℃条件下保温5-6小时。
一种含刚玉的耐火砖，以重量百分比计包括：碳30％-40％、碳化硅30％-40％、刚玉15％-20％、镁砂10％-20％、分散剂5％-10％、复合外加剂5％-10％和酚醛树脂10％-15％。
进一步的，以重量百分比计包括：碳30％、碳化硅40％、刚玉15％、镁砂20％、分散剂5％、复合外加剂10％和酚醛树脂10％。
进一步的，以重量百分比计包括：碳40％、碳化硅30％、刚玉20％、镁砂10％、分散剂10％、复合外加剂5％和酚醛树脂15％。
进一步的，以重量百分比计包括：碳35％、碳化硅35％、刚玉17％、镁砂15％、分散剂7％、复合外加剂7％和酚醛树脂13％。
进一步的，所述复合外加剂为高效减水剂。
进一步的，所述分散剂为水玻璃、三聚磷酸钠、六偏磷酸钠或焦磷酸钠。
与现有技术相比，本发明具有的有益效果是：
1.本发明中，通过将碳、碳化硅、刚玉、镁砂等原料进行混合制烧，使耐火砖的耐高温，耐冲刷和抗氧化性能得到了提升。
具体实施方式
为使本发明实施方式的目的、技术方案和优点更加清楚，下面对本发明实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式是本发明一部分实施方式，而不是全部的实施方式。
实施例1
本实施例中公开了一种含刚玉的耐火砖，以重量百分比计包括：碳30％-40％、碳化硅30％-40％、刚玉15％-20％、镁砂10％-20％、分散剂5％-10％、复合外加剂5％-10％和酚醛树脂10％-15％。
一种含刚玉的耐火砖制备方法，包括以下步骤：
步骤1，混合物料：按质量配比称取碳、碳化硅、刚玉、镁砂及分散剂在一定温度下进行保温，保温完毕，碾碎至80-150目得到混合料，碳、碳化硅、刚玉、镁砂及分散剂混合料在600-800℃下保温7-9小时；
步骤2，混合料制浆：取混合料与复合外加剂和酚醛树脂混合，复合外加剂为高效减水剂，所述分散剂为水玻璃、三聚磷酸钠、六偏磷酸钠或焦磷酸钠，并加水搅拌均匀后陈化5-6天得到混合浆；
步骤3，混合浆加压：在压机上对混合浆加压成型，进行制砖，于1200-1350℃下烘焙4-5小时得到待烧砖；
步骤4，烧制砖：在干燥窑内将待烧砖于一定条件下进行保温，待烧砖于1000-1200℃条件下保温5-6小时，然后升温至1770-1790℃,并保温24-32小时，制得所述耐火砖。
实施例2
在本实施方式作为本发明的一较佳实施例，公开了一种含刚玉的耐火砖，以重量百分比计包括：碳30％、碳化硅40％、刚玉15％、镁砂20％、分散剂5％、复合外加剂10％和酚醛树脂10％。
一种含刚玉的耐火砖制备方法，包括以下步骤：
步骤1，混合物料：按质量配比称取碳、碳化硅、刚玉、镁砂及分散剂在一定温度下进行保温，保温完毕，碾碎至80-150目得到混合料，碳、碳化硅、刚玉、镁砂及分散剂混合料在600-800℃下保温7-9小时；
步骤2，混合料制浆：取混合料与复合外加剂和酚醛树脂混合，复合外加剂为高效减水剂，所述分散剂为水玻璃、三聚磷酸钠、六偏磷酸钠或焦磷酸钠，并加水搅拌均匀后陈化5-6天得到混合浆；
步骤3，混合浆加压：在压机上对混合浆加压成型，进行制砖，于1200-1350℃下烘焙4-5小时得到待烧砖；
步骤4，烧制砖：在干燥窑内将待烧砖于一定条件下进行保温，待烧砖于1000-1200℃条件下保温5-6小时，然后升温至1770-1790℃,并保温24-32小时，制得所述耐火砖。
实施例3
在本实施方式作为本发明的一较佳实施例，公开了一种含刚玉的耐火砖，以重量百分比计包括：碳40％、碳化硅30％、刚玉20％、镁砂10％、分散剂10％、复合外加剂5％和酚醛树脂15％。
一种含刚玉的耐火砖制备方法，包括以下步骤：
步骤1，混合物料：按质量配比称取碳、碳化硅、刚玉、镁砂及分散剂在一定温度下进行保温，保温完毕，碾碎至80-150目得到混合料，碳、碳化硅、刚玉、镁砂及分散剂混合料在600-800℃下保温7-9小时；
步骤2，混合料制浆：取混合料与复合外加剂和酚醛树脂混合，复合外加剂为高效减水剂，所述分散剂为水玻璃、三聚磷酸钠、六偏磷酸钠或焦磷酸钠，并加水搅拌均匀后陈化5-6天得到混合浆；
步骤3，混合浆加压：在压机上对混合浆加压成型，进行制砖，于1200-1350℃下烘焙4-5小时得到待烧砖；
步骤4，烧制砖：在干燥窑内将待烧砖于一定条件下进行保温，待烧砖于1000-1200℃条件下保温5-6小时，然后升温至1770-1790℃,并保温24-32小时，制得所述耐火砖。
实施例4
在本实施方式作为本发明的一较佳实施例，公开了一种含刚玉的耐火砖，以重量百分比计包括：碳35％、碳化硅35％、刚玉17％、镁砂15％、分散剂7％、复合外加剂7％和酚醛树脂13％。
一种含刚玉的耐火砖制备方法，包括以下步骤：
步骤1，混合物料：按质量配比称取碳、碳化硅、刚玉、镁砂及分散剂在一定温度下进行保温，保温完毕，碾碎至80-150目得到混合料，碳、碳化硅、刚玉、镁砂及分散剂混合料在600-800℃下保温7-9小时；
步骤2，混合料制浆：取混合料与复合外加剂和酚醛树脂混合，复合外加剂为高效减水剂，所述分散剂为水玻璃、三聚磷酸钠、六偏磷酸钠或焦磷酸钠，并加水搅拌均匀后陈化5-6天得到混合浆；
步骤3，混合浆加压：在压机上对混合浆加压成型，进行制砖，于1200-1350℃下烘焙4-5小时得到待烧砖；
步骤4，烧制砖：在干燥窑内将待烧砖于一定条件下进行保温，待烧砖于1000-1200℃条件下保温5-6小时，然后升温至1770-1790℃,并保温24-32小时，制得所述耐火砖。
本发明中，通过将碳、碳化硅、刚玉、镁砂等原料进行混合制烧，使耐火砖的耐高温，耐冲刷和抗氧化性能得到了提升。
以上即为本实施例列举的实施方式，但本实施例不局限于上述可选的实施方式，本领域技术人员可根据上述方式相互任意组合得到其他多种实施方式，任何人在本实施例的启示下都可得出其他各种形式的实施方式。上述具体实施方式不应理解成对本实施例的保护范围的限制，本实施例的保护范围应当以权利要求书中界定的为准，并且说明书可以用于解释权利要求书。
Claims (10)
1.一种含刚玉的耐火砖制备方法，其特征在于：包括以下步骤：
步骤1，混合物料：按质量配比称取原料混合均匀后升温并保温，保温完成后碾碎至80-150目得到混合料；
步骤2，混合料制浆：取混合料与复合外加剂和酚醛树脂混合，并加水搅拌均匀后陈化得到混合浆；
步骤3，混合浆加压：在对混合浆加压成型，进行制砖，于1200-1350℃下烘焙4-5小时得到待烧砖；
步骤4，烧制砖：先将待烧砖保温，然后升温至1770-1790℃,再次保温24-32小时，制得所述耐火砖。
2.根据权利要求1所述的一种含刚玉的耐火砖制备方法，其特征在于：所述步骤中原料包括碳、碳化硅、刚玉和镁砂。
3.根据权利要求1所述的一种含刚玉的耐火砖制备方法，其特征在于：所述步骤1中升温到600-800℃并保温7-9小时。
4.根据权利要求1所述的一种含刚玉的耐火砖制备方法，其特征在于：所述步骤2中陈化5-6天。
5.根据权利要求1所述的一种含刚玉的耐火砖制备方法，其特征在于：所述步骤4中先将待烧砖于1000-1200℃条件下保温5-6小时。
6.一种含刚玉的耐火砖，其特征在于：根据权利要求1-5任一项所述的一种含刚玉的耐火砖制备方法制得。
7.根据权利要求6所述的一种含刚玉的耐火砖，其特征在于：以重量百分比计包括：碳30％-40％、碳化硅30％-40％、刚玉15％-20％、镁砂10％-20％、分散剂5％-10％、复合外加剂5％-10％和酚醛树脂10％-15％。
8.根据权利要求7所述的一种含刚玉的耐火砖，其特征在于：以重量百分比计包括：碳30％、碳化硅40％、刚玉15％、镁砂20％、分散剂5％、复合外加剂10％和酚醛树脂10％。
9.根据权利要求7所述的一种含刚玉的耐火砖，其特征在于：所述复合外加剂为高效减水剂。
10.根据权利要求7所述的一种含刚玉的耐火砖，其特征在于：所述分散剂为水玻璃、三聚磷酸钠、六偏磷酸钠或焦磷酸钠。
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