CN111018506B - 一种用于水泥窑预热器抗结皮喷涂料 - Google Patents
一种用于水泥窑预热器抗结皮喷涂料 Download PDFInfo
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- 239000004568 cement Substances 0.000 title claims abstract description 33
- 238000005507 spraying Methods 0.000 title claims abstract description 30
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims abstract description 21
- 239000003973 paint Substances 0.000 claims abstract description 19
- 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 claims abstract description 12
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 12
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 10
- 229910052849 andalusite Inorganic materials 0.000 claims abstract description 9
- 229910052845 zircon Inorganic materials 0.000 claims abstract description 7
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 9
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 abstract description 6
- 230000035939 shock Effects 0.000 abstract description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002689 soil Substances 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 235000019832 sodium triphosphate Nutrition 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- 239000002994 raw material Substances 0.000 description 6
- 229910052906 cristobalite Inorganic materials 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910021486 amorphous silicon dioxide Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
本发明涉及一种用于水泥窑预热器抗结皮喷涂料，包括以下各组分及重量份：莫来石30～45份、红柱石15～20份、锆英石细粉10～15份、碳化硅微粉10～14份、苏州土10～12份、铝酸钙水泥8～12份、氧化铝微粉4～8份、硅微粉1～3份、氯化锂1～2份、三聚磷酸钠0.01～0.03份。本发明通过采用上述配方，可提升喷涂料热震稳定性和使用寿命，同时达到节能的效果。
Description
技术领域
本发明属于耐火材料技术领域，具体涉及一种用于水泥窑预热器抗结皮喷涂料。
背景技术
水泥的干法工艺发展到今天的预分解窑时代，每条生产线都存在一个预热器，预热器是预分解窑不可分割的关键组成。在水泥生产过程中，生料的预热和部分分解由预热器来完成，代替水泥回转窑部分功能，达到缩短回窑长度，同时使窑内以堆积状态进行气料换热过程。水泥厂设备移到预热器内在悬浮状态下进行，使生料能够同窑内排出的炽热气体充分混合，增大了气料接触面积，传热速度快，热交换效率高，达到提高水泥窑系统生产效率、降低熟料烧成热耗的目的。预热器内结皮会造成通风道的有效截面减小，阻力增大，影响系统的通风，结皮严重或塌落时，会引起系统压力不稳定甚至导致堵塞事故发生。
预热器内衬用耐火材料的使用环境极为苛刻，面临高温下水泥生料的磨损，水泥生料和燃料带入的碱金属氢氧化物和氯化物以及硫酸盐的侵蚀，温度的频繁变化。因此要求预热器内衬用耐火材料必须具有良好的耐磨性，抗碱侵蚀能力和热震稳定性。专利号为ZL201210311621.2的中国专利公开了水泥窑用抗结皮喷涂料，以焦宝石、碳化硅和高铝矾土细粉等原料制备了一种具有抗结皮能力的喷涂料，然而焦宝石中的方石英和石英等二氧化硅矿物在高温下的复杂晶型转变不利于热震稳定性；专利号为ZL201010286592.X的中国专利公开了一种碳化硅质喷涂料配方，以碳化硅为主要原料用于水泥窑的喷涂料，其主要缺陷在于大量碳化硅氧化将使砖氧化层加厚，内部结构变得疏松，使用寿命短。申请号为201710001320.2的中国专利申请公开了一种高强轻质节能陶瓷喷涂料，采用轻质莫来石和氧化铝空心球为主要原料生产可与含粉尘气流直接接触的高强轻质喷涂料，技术方案中以多孔原料为主成分，能够提高涂料的节能效果，但不利于提高喷涂料强度从而影响使用寿命。
发明内容
本发明所要解决的技术问题在于提供一种用于水泥窑预热器抗结皮喷涂料，可提升喷涂料热震稳定性和使用寿命，同时达到节能的效果。
为解决上述技术问题，本发明提供的一种用于水泥窑预热器抗结皮喷涂料，包含以下各组分及重量份：
优选地，所述莫来石包括粒度为8～5mm、5～3mm、1～0mm三种规格，各种规格的重量份如下：
8～5mm莫来石 16～25份
5～3mm莫来石 6～10份
1～0mm莫来石 8～10份。
优选地，所述红柱石包括粒度为1～0.5mm、0.5～0mm两种规格，各种规格的重量份如下：
1～0.5mm红柱石 10～12份
0.5～0mm红柱石 5～8份。
优选地，所述锆英石细粉的粒度小于100μm。
优选地，所述碳化硅微粉粒度小于12μm。
优选地，所述氯化锂粒度小于120μm。
本发明的有益效果在于：
1、本发明通过在喷涂料中加入锆英石和氯化锂，利用锆英石在高温下的红外遮蔽效应降低喷涂料的导热系数，在不降低强度的前提下提高了喷涂料的节能效果，且通过氯化锂解离引起碱性离子浓度增加，加快铝酸钙水泥的水化速率，加速了喷涂料的凝结和硬化，有利喷涂料快速形成强度。
2、由于红柱石在莫来石石化的过程中以及碳化硅被氧化后所形成的不定形二氧化硅易转化为方石英，本发明通过氯化锂中锂离子对方石英高温低温晶型转化的抑制作用，提高喷涂料的热震稳定性。
3、本发明通过加入苏州土、铝酸钙水泥和硅微粉，提高了喷涂料的粘附性，硅微粉的加入提高了喷涂料的流动性，有利于喷涂料在管道中的输运。
具体实施方式
实施例1
一种用于水泥窑预热器抗结皮喷涂料，包含以下各组分及重量份：
实施例2
一种用于水泥窑预热器抗结皮喷涂料，包含以下各组分及重量份：
实施例3
一种用于水泥窑预热器抗结皮喷涂料，包含以下各组分及重量份：
实施例4
一种用于水泥窑预热器抗结皮喷涂料，包含以下各组分及重量份：
上述实施例1-4所制备的水泥窑预热器抗结皮节能喷涂料性能如下：
本发明通过在喷涂料中加入锆英石和氯化锂，利用锆英石在高温下的红外遮蔽效应降低喷涂料的导热系数，在不降低强度的前提下提高了喷涂料的节能效果，且通过氯化锂解离引起碱性离子浓度增加，加快铝酸钙水泥水化速率，加速了喷涂料的凝结和硬化，有利喷涂料快速形成强度。氯化锂的加入量在1～2份效果最佳。另外，由于红柱石在莫来石石化的过程中以及碳化硅被氧化后所形成的不定形二氧化硅易转化为方石英，本发明通过氯化锂中锂离子对方石英高温低温晶型转化的抑制作用，提高喷涂料的热震稳定性。
本发明通过加入10～12苏州土、8～12份铝酸钙水泥和1～3硅微粉，提高了喷涂料的粘附性，硅微粉的加入提高了喷涂料的流动性，有利于喷涂料在管道中的输运。水泥加入量的增加引起喷涂料强度的连续增加，但喷涂料中的氧化钙含量也随之增加，促进了喷涂料高温下的液相形成。另一方面，氯化锂中的锂离子也可促进喷涂料中高温液相的形成，高温下形成过量的液相不利于喷涂料的高温强度，铝酸钙水泥的加入量在8～12份效果最佳。
上述说明是示例性的而非限制性的。通过上述说明本领域技术人员可以意识到本发明的许多种改变和变形，其也将落在本发明的实质和范围之内。
Claims (6)
1.一种用于水泥窑预热器抗结皮喷涂料，其特征在于，包含以下各组分及重量份：
2.根据权利要求1所述的用于水泥窑预热器抗结皮喷涂料，其特征在于，所述莫来石包括粒度为8～5mm、5～3mm、1～0mm三种规格，各种规格的重量份如下：
8～5mm莫来石 16～25份
5～3mm莫来石 6～10份
1～0mm莫来石 8～10份。
3.根据权利要求1所述的用于水泥窑预热器抗结皮喷涂料，其特征在于，所述红柱石包括粒度为1～0.5mm、0.5～0mm两种规格，各种规格的重量份如下：
1～0.5mm红柱石 10～12份
0.5～0mm红柱石 5～8份。
4.根据权利要求1所述的用于水泥窑预热器抗结皮喷涂料，其特征在于，所述锆英石细粉的粒度小于100μm。
5.根据权利要求1所述的用于水泥窑预热器抗结皮喷涂料，其特征在于，所述碳化硅微粉粒度小于12μm。
6.根据权利要求1所述的用于水泥窑预热器抗结皮喷涂料，其特征在于，所述氯化锂粒度小于120μm。
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