CN109354505A - 一种水泥窑余热发电用耐磨捣打料 - Google Patents
一种水泥窑余热发电用耐磨捣打料 Download PDFInfo
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Abstract
本发明涉及一种水泥窑余热发电用耐磨捣打料,包括以下各组分及重量份:5~8mm焦宝石16~25份,3~5mm回收高铝砖15~20份,1~3mm回收高铝砖6~12份,0~1mm回收高铝砖8~13份,0~1mm焦宝石5~10份,不大于200目焦宝石粉15~20份,煅烧氧化铝粉6~12份,焦作白泥4~6份,不大于200目氧化镁粉1~3份,磷酸二氢铝干粉5~8份。本发明采用回收高铝砖作为原料,采用磷酸二氢铝粉末作为结合剂,便于制备、运输和存储,材料成本低,韧性好、粘附力强、强度高、耐磨性优异、施工方便,非常适合应用于水泥窑余热发电工况条件。
Description
技术领域
本发明属于耐火材料技术领域,具体涉及一种水泥窑余热发电用耐磨捣打料。
背景技术
在水泥熟料生产过程中,水泥窑的窑头和窑尾产生大量废气余热,在废气排出的过程中设置余热锅炉。在余热锅炉内,废气与水进行热交换,使水形成一定温度和压力的过热蒸汽,过热蒸汽进入汽轮发电机组实现热能向机械能的转换,带动发电机发电。水泥窑余热发电具有适应性广,热效率高,高效脱硫,氮氧化物排放量低,负荷调节比例大及负荷调节快等优点,正在逐步推广应用。该系统由于烟气中颗粒速度高,高温下对炉衬耐火材料有强烈的冲刷、磨损作用,烟气中杂质与炉衬材料会发生化学反应以及频繁的热交换,要求炉衬耐火材料具有高强度、抗侵蚀、耐磨损和抗热震等性能。尤其是热交换器部位承受着颗粒、气流、烟尘介质磨损及热震的作用,导致耐火材料内衬冲蚀、磨损、剥落和坍塌,严重影响设备的正常运行和生产。
目前已有的捣打料多数采用树脂或磷酸为结合剂,这些结合剂都呈液态,在制备过程中就需要加入,不但造成搅拌设备的动力增加,而且所制备的捣打料保质期也严重受到影响,采用水玻璃作为结合剂属于双组份构成,需要另外包装运输到施工现场,施工后硬化速度也比较慢。在应用领域方面,目前已有的捣打料多数是针对铁沟、RH炉、中频炉、循环流化床等设备中,在材质、施工方式、使用温度等方面并不适合用于水泥窑余热发电。
发明内容
本发明所要解决的技术问题在于提供一种水泥窑余热发电用耐磨捣打料,采用回收高铝砖作为原料,采用磷酸二氢铝粉末作为结合剂,便于制备、运输和存储,材料成本低,韧性好、粘附力强、强度高、耐磨性优异、施工方便,非常适合应用于水泥窑余热发电工况条件。
为解决上述技术问题,本发明提供的一种水泥窑余热发电用耐磨捣打料,包括以下各组分及重量份:
优选地,所述回收高铝砖经过破碎、筛分、除铁后加工成3~5mm、1~3mm、0~1mm三种规格,各种规格的重量份如下:
3~5mm回收高铝砖 15~20份
1~3mm回收高铝砖 6~12份
0~1mm回收高铝砖 8~13份。
优选地,所述回收高铝砖中Al2O3的质量百分含量不小于55%。
优选地,所述焦宝石包括5~8mm、0~1mm、不大于200目三种规格,各种规格的重量份如下:
5~8mm焦宝石 16~25份
0~1mm焦宝石 5~10份
不大于200目焦宝石粉 15~20份。
优选地,所述焦宝石中Al2O3的质量百分含量不小于40%。
优选地,所述焦作白泥中Al2O3的质量百分含量不小于30%。
本发明采用回收高铝砖作为原料,采用磷酸二氢铝粉末作为结合剂,避免了制备过程中加入液态结合剂造成对搅拌设备的磨损,降低了运输过程中的难度,现场经过加水搅拌即可使用,便于制备、运输和存储;采用回收高铝砖作为原料,大大节约了材料成本;制备的耐磨捣打料韧性好、粘附力强、强度高、耐磨性优异、施工方便,能够保证在施工场地空间狭窄、管道多变的应用条件下使施工简便化,非常适合应用于水泥窑余热发电工况条件。
具体实施方式
实施例1
一种水泥窑余热发电用耐磨捣打料,包括以下各组分及重量份:
将上述各种原料按比例配好后,经过混合搅拌工艺制得耐磨捣打料,施工前加入8~12份水即可使用。
其中,所述回收高铝砖经过破碎、筛分、除铁后加工成3~5mm、1~3mm、0~1mm三种规格后进行配比;所述回收高铝砖中Al2O3的质量百分含量不小于55%;所述焦宝石中Al2O3的质量百分含量不小于40%;所述焦作白泥中Al2O3的质量百分含量不小于30%。
实施例2
一种水泥窑余热发电用耐磨捣打料,包括以下各组分及重量份:
将上述各种原料按比例配好后,经过混合搅拌工艺制得耐磨捣打料,施工前加入8~12份水即可使用。
其中,所述回收高铝砖经过破碎、筛分、除铁后加工成3~5mm、1~3mm、0~1mm三种规格后进行配比;所述回收高铝砖中Al2O3的质量百分含量不小于55%;所述焦宝石中Al2O3的质量百分含量不小于40%;所述焦作白泥中Al2O3的质量百分含量不小于30%。
实施例3
一种水泥窑余热发电用耐磨捣打料,包括以下各组分及重量份:
将上述各种原料按比例配好后,经过混合搅拌工艺制得耐磨捣打料,施工前加入8~12份水即可使用。
其中,所述回收高铝砖经过破碎、筛分、除铁后加工成3~5mm、1~3mm、0~1mm三种规格后进行配比;所述回收高铝砖中Al2O3的质量百分含量不小于55%;所述焦宝石中Al2O3的质量百分含量不小于40%;所述焦作白泥中Al2O3的质量百分含量不小于30%。
实施例4
一种水泥窑余热发电用耐磨捣打料,包括以下各组分及重量份:
将上述各种原料按比例配好后,经过混合搅拌工艺制得耐磨捣打料,施工前加入8~12份水即可使用。
其中,所述回收高铝砖经过破碎、筛分、除铁后加工成3~5mm、1~3mm、0~1mm三种规格后进行配比;所述回收高铝砖中Al2O3的质量百分含量不小于55%;所述焦宝石中Al2O3的质量百分含量不小于40%;所述焦作白泥中Al2O3的质量百分含量不小于30%。
上述实施例1-4所制备的水泥窑余热发电用耐磨捣打料性能如下:
1、化学成分:Al2O3+SiO2≥80%;
2、体积密度(g/cm3):110℃×24h≥2.3;
3、常温耐压强度(MPa):110℃×24h≥40,350℃×3h≥40,550℃×3h≥50;
4、常温抗折强度(MPa):110℃×24h≥8,350℃×3h≥8,550℃×3h≥10;
5、加热永久线变化(%):550℃×3h:-0.2~0;
6、耐磨系数(cc):550℃×3h≤8。
综上,本发明采用回收高铝砖作为原料,采用磷酸二氢铝粉末作为结合剂,避免了制备过程中加入液态结合剂造成对搅拌设备的磨损,降低了运输过程中的难度,现场经过加水搅拌即可使用,便于制备、运输和存储;采用回收高铝砖作为原料,大大节约了材料成本;制备的耐磨捣打料韧性好、粘附力强、强度高、耐磨性优异、施工方便,能够保证在施工场地空间狭窄、管道多变的应用条件下使施工简便化,非常适合应用于水泥窑余热发电工况条件。
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)
1.一种水泥窑余热发电用耐磨捣打料,其特征在于,包含以下各组分及重量份:
2.根据权利要求1所述的一种水泥窑余热发电用耐磨捣打料,其特征在于,所述回收高铝砖经过破碎、筛分、除铁后加工成3~5mm、1~3mm、0~1mm三种规格,各种规格的重量份如下:
3~5mm回收高铝砖 15~20份
1~3mm回收高铝砖 6~12份
0~1mm回收高铝砖 8~13份。
3.根据权利要求1或2所述的一种水泥窑余热发电用耐磨捣打料,其特征在于,所述回收高铝砖中Al2O3的质量百分含量不小于55%。
4.根据权利要求1所述的一种水泥窑余热发电用耐磨捣打料,其特征在于,所述焦宝石包括5~8mm、0~1mm、不大于200目三种规格,各种规格的重量份如下:
5~8mm焦宝石 16~25份
0~1mm焦宝石 5~10份
不大于200目焦宝石粉 15~20份。
5.根据权利要求1或4所述的一种水泥窑余热发电用耐磨捣打料,其特征在于,所述焦宝石中Al2O3的质量百分含量不小于40%。
6.根据权利要求1所述的一种水泥窑余热发电用耐磨捣打料,其特征在于,所述焦作白泥中Al2O3的质量百分含量不小于30%。
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CN101462888A (zh) * | 2009-01-09 | 2009-06-24 | 霍玉祥 | 一种高性能强耐磨捣打料配方 |
CN104725061A (zh) * | 2015-03-16 | 2015-06-24 | 通达耐火技术股份有限公司 | 一种水泥窑余热发电用耐磨捣打涂抹料 |
CN105948765A (zh) * | 2016-04-27 | 2016-09-21 | 江西荣恩能源科技有限公司 | 磷酸莫来石、磷酸焦宝石耐火捣打料及其制备方法 |
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CN114988898A (zh) * | 2022-07-15 | 2022-09-02 | 中钢集团洛阳耐火材料研究院有限公司 | 一种碳化硅-镁铝尖晶石免烧耐火材料的制备方法 |
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