CN104591760A - 一种回转窑用燃烧器预制件及制备方法 - Google Patents
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Abstract
本发明公开了一种回转窑用燃烧器预制件及制备方法,这种回转窑用燃烧器预制件由板状刚玉、Si2Al4O4N4、Al3BC3、锆尖晶石,碳酸锶粉,碳化钒粉,氧化铝微粉,纯铝酸钙水泥,复合粉,外加剂和氯化铝溶液组成。采用自流浇注的方法成形,经养护、干燥后、在高温下进行热处理。与传统浇注料相比,这种产品具有自流施工,自消泡,抗剥落,耐磨性高,寿命长等特点,可以在各种回转窑如水泥行业,石灰行业,煅烧矿行业,冶金行业所用的回转窑的喷煤管部位得到更加广泛的应用。
Description
技术领域
本发明涉及一种回转窑用燃烧器预制件及制备方法,尤其涉及煅烧矿行业,水泥行业,石灰行业,冶金行业所用的回转窑燃烧器预制件及制备方法。
背景技术
传统的燃烧器通常都是采用散装料在使用现场进行振动浇注成型,从而延长了停窑的周期,施工周期长、现场劳动强度大、施工时加水多、养护周期长、最终产品寿命短,因而影响了回转窑的正常生产。同时现有浇注料产品也很难满足在燃烧器使用过程中的抗剥落、寿命短,施工质量偏析不稳定等问题。预制件是指改变供货样式:燃烧器在耐火厂里完成浇注、养护及热处理,然后把该产品拉到厂家直接使用,该种产品的开发彻底解决了传统不定形耐火浇注料的现场施工弱点。
发明内容
本发明的目的就是为了解决产品不抗剥落,抗热震性差,寿命短及施工质量差的缺陷,提供一种回转窑用燃烧器预制件及制备方法,制成的预制件产品能够满足回转窑燃烧器要求的抗剥落,长寿命,热震稳定性高,施工方便,质量稳定等问题。
为解决上述技术问题,本发明采用如下技术方案:预制件由板状刚玉、Si2Al4O4N4、Al3BC3、锆尖晶石,碳酸锶粉,碳化钒粉,氧化铝微粉,纯铝酸钙水泥,复合粉,外加剂和氯化铝溶液组成。
原料中板状刚玉、Si2Al4O4N4、Al3BC3、锆尖晶石,碳酸锶粉,碳化钒粉,氧化铝微粉,纯铝酸钙水泥,复合粉的重量份数为:板状刚玉15-20份、Si2Al4O4N4 20-25份、Al3BC37-12份,锆尖晶石20-28份,碳酸锶粉1-3份,碳化钒粉2-4份,氧化铝微粉8-12份,纯铝酸钙水泥3-7份,复合粉0-1份。氯化铝溶液、外加剂的加入量分别占上述总重量的百分比为:氯化铝溶液9%,外加剂为0.2-0.3%;复合粉由白榴石粉和钾霞石粉组成,其重量比1:1。
所述的外加剂为磺化三聚氰胺甲醛树脂,异辛醇,5-磺酸水杨酸,三者重量比为2:1:1。所述的氯化铝溶液密度为1.25克/立方厘米,PH3.5,粘度0.006KPa.s。
将上述各原料按以上比例进行配料,混合均匀后,采用自流浇注的方法成形,经养护、干燥后,在高温下进行热处理,得到这种燃烧器用预制件。
本发明的制备方法为:
步骤一、混料及搅拌,按配比配好原料,加入外加剂,在搅拌机充分搅拌均匀,搅拌均匀后再加入氯化铝溶液,自流值控制200 mm即可;步骤二、成形、养护及干燥,成形:将模具安装好,加入搅拌好的搅拌混合料,靠混合料的自重和表面张力摊平;表面多余的料抹去;养护:将自流浇注好的试样和模具放入25℃恒温室,经检查硬化后脱模,脱模后再自然养护48小时;干燥:养护好的试样在电窑内进行110℃24h烘干处理,关闭电源待其冷却到室温;步骤三、热处理,干燥后的试样放入加热炉中,按照5℃/min开始升温到300℃,再以10℃/min的速度升到1000℃,并保温3小时;结束后,自然冷却到室温,出炉后得到这种回转窑用预制件。
所得预制件的体积密度在2.7g/cm3,常温抗折强度25MPa,耐磨小于4,使用寿命在18个月以上。
本发明得到了一种抗剥落,长寿命,自流施工,自消泡的回转窑用燃烧器预制件。该预制件耐高温,抗剥落,长寿命,提高了回转窑行业的运转率,施工时自流浇注,气孔可以自行消除,避免了振动浇注料产生的质量偏析,改变了原先散装产品的缺点,该种产品的开发彻底解决了传统不定形耐火浇注料的现场施工弱点。
具体实施方式
实施例1,板状刚玉16份、Si2Al4O4N425份、Al3BC312份,锆尖晶石20份,碳酸锶粉3份,碳化钒粉4份,氧化铝微粉12份,纯铝酸钙水泥7份,复合粉1份。加入外加剂,充分混合均匀后,然后再加入氯化铝溶液。氯化铝溶液、外加剂的加入量分别占上述总重量的百分比为:氯化铝溶液9%,外加剂为0.3%。
实施例2,板状刚玉17份、Si2Al4O4N424份、Al3BC312份,锆尖晶石20份,碳酸锶粉3份,碳化钒粉4份,氧化铝微粉12份,纯铝酸钙水泥7份,复合粉1份。加入外加剂,充分混合均匀后,然后再加入氯化铝溶液。氯化铝溶液、外加剂的加入量分别占上述总重量的百分比为:氯化铝溶液9%,外加剂为0.2%。
实施例3,板状刚玉18份、Si2Al4O4N423份、Al3BC312份,锆尖晶石21份,碳酸锶粉3份,碳化钒粉4份,氧化铝微粉12份,纯铝酸钙水泥7份,复合粉0份。加入外加剂,充分混合均匀后,然后再加入氯化铝溶液。氯化铝溶液、外加剂的加入量分别占上述总重量的百分比为:氯化铝溶液9%,外加剂为0.3%。
实施例1,2,3的后续制备工艺为::将模具安装好,加入搅拌好的搅拌混合料,靠混合料的自重和表面张力摊平;表面多余的料抹去;养护:将自流浇注好的试样和模具放入25℃恒温室,经检查硬化后脱模,脱模后再自然养护48小时;干燥:养护好的试样在电窑内进行110℃24h烘干处理,关闭电源待其冷却到室温;步骤三、热处理,干燥后的试样放入加热炉中,按照5℃/min开始升温到300℃,再以10℃/min的速度升到1000℃,并保温3小时;结束后,自然冷却到室温,出炉后得到这种回转窑用燃烧器预制件。
Claims (3)
1.一种回转窑用燃烧器预制件,其特征在于:由板状刚玉、Si2Al4O4N4、Al3BC3、锆尖晶石,碳酸锶粉,碳化钒粉,氧化铝微粉,纯铝酸钙水泥,复合粉,外加剂和氯化铝溶液组成;其中,板状刚玉15-20份、Si2Al4O4N4 20-25份、Al3BC37-12份,锆尖晶石20-28份,碳酸锶粉1-3份,碳化钒粉2-4份,氧化铝微粉8-12份,纯铝酸钙水泥3-7份,复合粉0-1份;氯化铝溶液、外加剂的加入量分别上述总重量的百分比为:氯化铝溶液9%,外加剂为0.2-0.3%;复合粉由白榴石粉和钾霞石粉组成,其重量比1:1;外加剂为磺化三聚氰胺甲醛树脂,异辛醇,5-磺酸水杨酸,三者重量比为2:1:1。
2.根据权利要求1所述的一种回转窑用燃烧器预制件,其特征在于:所述的氯化铝溶液密度为1.25克/立方厘米,PH3.5,粘度0.006KPa.s。
3. 根据权利要求1所述的一种回转窑用燃烧器预制件的制备方法,其特征在于:步骤一、混料及搅拌,按配比配好原料,加入外加剂,在搅拌机充分搅拌均匀,搅拌均匀后再加入氯化铝溶液,自流值控制200 mm即可;步骤二、成形、养护及干燥,成形:将模具安装好,加入搅拌好的搅拌混合料,靠混合料的自重和表面张力摊平;表面多余的料抹去;养护:将自流浇注好的试样和模具放入25℃恒温室,经检查硬化后脱模,脱模后再自然养护48小时;干燥:养护好的试样在电窑内进行110℃24h烘干处理,关闭电源待其冷却到室温;步骤三、热处理,干燥后的试样放入加热炉中,按照5℃/min开始升温到300℃,再以10℃/min的速度升到1000℃,并保温3小时;结束后,自然冷却到室温,出炉后得到这种回转窑用燃烧器预制件。
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CN108085551A (zh) * | 2016-11-21 | 2018-05-29 | 宜兴市帝洲新能源科技有限公司 | 一种建筑物金属预制件材料 |
CN109592972A (zh) * | 2018-12-24 | 2019-04-09 | 长兴兴鹰新型耐火建材有限公司 | 一种水泥窑协同处置固废抗侵蚀耐磨浇注料 |
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CN101423405A (zh) * | 2008-11-20 | 2009-05-06 | 武汉科技大学 | 一种Al8B4C7-Al4O4C质复合耐火材料及其制备方法 |
WO2011019128A1 (ko) * | 2009-08-13 | 2011-02-17 | 한국기계연구원 | 탄소열환원공정을 이용한 Al3BC3의 제조방법 |
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CN108085551A (zh) * | 2016-11-21 | 2018-05-29 | 宜兴市帝洲新能源科技有限公司 | 一种建筑物金属预制件材料 |
CN109592972A (zh) * | 2018-12-24 | 2019-04-09 | 长兴兴鹰新型耐火建材有限公司 | 一种水泥窑协同处置固废抗侵蚀耐磨浇注料 |
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CN106242591A (zh) | 2016-12-21 |
CN106242590A (zh) | 2016-12-21 |
CN104591760B (zh) | 2016-08-24 |
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