CN107162625A - 一种耐火保温砖及其制备方法 - Google Patents
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Abstract
本发明公开了一种耐火保温砖及其制备方法,涉及建筑材料领域,该保温砖包括以下原料:河道淤泥、粉煤灰、木质纤维、改性钡长石粉、钠沸石粉、加气铝粉、钠基膨润土、聚丙烯酸酯共聚乳液、减水剂、发泡剂和稳泡剂。其制备方法是先对原料的搅拌混合制得浆料,之后通过对浆料的压制成型、自然养护、烘干、高温煅烧等处理,即可。本发明的保温砖干密度小,容重轻,抗压强度高,且具有耐高温和耐腐蚀的特点,使用寿命长,可靠性高,制备简单方便,适宜推广应用。
Description
技术领域
本发明涉及建筑材料领域,具体涉及一种耐火保温砖及其制备方法。
背景技术
随着国民经济的快速发展,人民生活水平的不断提高,对能源的消耗也越来越大,能源短缺问题日益突出,因此,节能环保型建筑材料逐渐被人们所重视,保温砖作为建筑材料中的一种,应用广泛,通常下保温砖是采用锯木屑、聚轻球、高岭土、铝矾土熟料等,但上述原料成本较高,在制备耐火保温砖的过程中烧结温度较高,从另一个方面又增加了加工成本。并且工业生产对低容重耐火砖的需求量越来越大,对低容重产品的耐压强度要求也越来越高,耐压强度必须在1.5MPa以上,然而,目前市场上低容重的耐火砖无法达到上述耐压强度,严重影响建筑工程中的可靠性及安全性。因此,研制出一种能够解决上述性能问题的保温砖非常有必要。
钡长石是钾、钠、钙等碱金属或碱土金属的铝硅酸盐矿物,也叫正长石。具有熔点低、强度高、耐腐蚀、耐高温等特性,其通过特定步骤改性后,所表现的各方面性能提高,将其应用于保温砖领域中,具有积极的意义和作用。
发明内容
针对现有技术中存在的问题,本发明提供了一种耐火保温砖及其制备方法,该种保温砖干密度小,容重轻,抗压强度高,且具有耐高温和耐腐蚀的特点,使用寿命长,可靠性高,制备简单方便,适宜推广应用。
为了达到上述目的,本发明通过以下技术方案来实现的:
一种耐火保温砖,包括以下按重量份计的原料:河道淤泥60-80份、粉煤灰30-40份、木质纤维10-20份、改性钡长石粉15-25份、钠沸石粉15-25份、加气铝粉10-20份、钠基膨润土5-15份、聚丙烯酸酯共聚乳液4-8份、减水剂1-5份、发泡剂1-3份和稳泡剂1-3份;
所述改性钡长石粉通过以下步骤制得:先将钡长石粉碎至颗粒状,粒径为3-6mm,得钡长石颗粒,再将钡长石颗粒放入碳酸钠与高锰酸钾混合溶液中浸泡80-100min后,取出干燥,加入相当于钡长石颗粒重量2-4%的硅烷偶联剂KH550、相当于浊沸石重量1-3%的月桂醇硫酸钠和相当于浊沸石重量1-3%的氧化铝于300-500r/min下搅拌15-25min后研磨,过120-160目筛即得。
进一步地,所述保温砖包括以下按重量份计的原料:河道淤泥70份、粉煤灰35份、木质纤维15份、改性钡长石粉20份、钠沸石粉20份、加气铝粉15份、钠基膨润土10份、聚丙烯酸酯共聚乳液6份、减水剂3份、发泡剂2份和稳泡剂2份。
优选地,所述减水剂为木质素磺酸钙、聚丙烯酸钠或氨基磺酸钠中的一种。
优选地,所述发泡剂为硅酸钠、碳酸钙、碳酸镁或碳酸氢钠中的一种或者一种以上。
优选地,所述稳泡剂为硅树脂聚醚乳液、聚丙烯酰胺或聚乙烯醇中的一种。
上述的一种耐火保温砖的制备方法,按照以下步骤进行:
(1)按照所述重量份配比获取原料;
(2)将河道淤泥、粉煤灰、木质纤维、改性钡长石粉、钠沸石粉、加气铝粉、钠基膨润土和聚丙烯酸酯共聚乳液混合输送至砂浆搅拌机中,再加入其总重量10-20%的水进行混合搅拌处理,搅拌转速为70-80r/min,搅拌时间为1-2h,得浆料A;
(3)向所述浆料A中加入减水剂、发泡剂和稳泡剂,在砂浆搅拌机中搅拌混合30-40min,且搅拌转速为70-80r/min,得浆料B;
(4)将所述浆料B浇筑至模具中,通过压力机进行压制成型;
(5)将成型后的保温砖置于养护室中养护处理16-24h;
(6)将养护后的保温砖放置于烘干机内进行烘干处理,且烘干温度为75-85℃,烘干时间24-32h;
(7)将烘干后的保温砖放置于高温煅烧炉中进行高温煅烧处理,即可,且该高温煅烧的温度为1120-1280℃,高温煅烧时间为12-16h。
进一步地,所述压力机的压制强度为0.6-1.0MPa,压制时间为1.0-1.5s。
进一步地,所述养护室的养护温度为28-32℃,养护湿度为5-15%。
本发明具有如下的有益效果:
(1)本发明的耐火保温砖原料来源广泛,制备简单,原料中采用河道淤泥和粉煤灰作为主料,大大降低了原料成本,生产流程中可采用低温快烧,能耗低,生产效率高;
(2)本发明的耐火保温砖通过对生产原料及工艺的改进,加入改性钡长石粉、钠沸石粉及钠基膨润土等成分,使得成品保温砖能达到干密度小,容重轻,抗压强度高的要求,经研发技术人员检测,其平均每块标准的保温砖干密度≤680kg/m3,抗压强度≥32.6MPa,其检测指标均远远大于国家行业标准,另外,该种耐火保温砖还具有耐高温和耐腐蚀的特点,使用寿命长,可靠性高,适宜推广应用。
具体实施方式
下面结合实施例对本发明的具体实施方式作进一步描述,以下实施例仅用于更加清楚地说明本发明的技术方案,而不能以此来限制本发明的保护范围。
实施例1
一种耐火保温砖,包括以下原料:河道淤泥60kg、粉煤灰30kg、木质纤维10kg、改性钡长石粉15kg、钠沸石粉15kg、加气铝粉10kg、钠基膨润土5kg、聚丙烯酸酯共聚乳液4kg、减水剂1kg、发泡剂1kg和稳泡剂1kg;
所述改性钡长石粉通过以下步骤制得:先将钡长石粉碎至颗粒状,粒径为3-6mm,得钡长石颗粒,再将钡长石颗粒放入碳酸钠与高锰酸钾混合溶液中浸泡80min后,取出干燥,加入相当于钡长石颗粒重量2%的硅烷偶联剂KH550、相当于浊沸石重量1%的月桂醇硫酸钠和相当于浊沸石重量1%的氧化铝于300r/min下搅拌15min后研磨,过120目筛即得。
其中,上述的减水剂采用木质素磺酸钙;发泡剂采用硅酸钠;稳泡剂采用硅树脂聚醚乳液。
上述的一种耐火保温砖的制备方法,按照以下步骤进行:
(1)先将河道淤泥、粉煤灰、木质纤维、改性钡长石粉、钠沸石粉、加气铝粉、钠基膨润土和聚丙烯酸酯共聚乳液混合输送至砂浆搅拌机中,再加入其总重量10%的水进行混合搅拌处理,搅拌转速为70r/min,搅拌时间为1h,得浆料A;
(2)再向所述浆料A中加入减水剂、发泡剂和稳泡剂,在砂浆搅拌机中搅拌混合30min,且搅拌转速为70r/min,得浆料B;
(3)之后将所述浆料B浇筑至模具中,通过压力机进行压制成型,且对砖料的压制强度为0.6MPa,压制时间为1.0s;
(4)接着将成型后的保温砖置于养护室中,控制养护室的环境条件:养护温度控制在28℃,养护湿度设定为5%,养护时间设定为16h;
(5)然后将养护后的保温砖放置于烘干机内进行烘干处理,且烘干温度为75℃,烘干时间24h;
(6)最后将烘干后的保温砖放置于高温煅烧炉中进行高温煅烧处理,即制得本发明的耐火保温砖,且上述的高温煅烧的温度为1120℃,高温煅烧时间为12h。
实施例2
一种耐火保温砖,包括以下原料:河道淤泥70kg、粉煤灰35kg、木质纤维15kg、改性钡长石粉20kg、钠沸石粉20kg、加气铝粉15kg、钠基膨润土10kg、聚丙烯酸酯共聚乳液6kg、减水剂3kg、发泡剂2kg和稳泡剂2kg;
所述改性钡长石粉通过以下步骤制得:先将钡长石粉碎至颗粒状,粒径为3-6mm,得钡长石颗粒,再将钡长石颗粒放入碳酸钠与高锰酸钾混合溶液中浸泡90min后,取出干燥,加入相当于钡长石颗粒重量3%的硅烷偶联剂KH550、相当于浊沸石重量2%的月桂醇硫酸钠和相当于浊沸石重量2%的氧化铝于400r/min下搅拌20min后研磨,过140目筛即得。
其中,上述的减水剂采用聚丙烯酸钠;发泡剂采用碳酸钙和碳酸镁两种混合物,且两者之间的质量比为1:1;稳泡剂采用聚丙烯酰胺。
上述的一种耐火保温砖的制备方法,按照以下步骤进行:
(1)先将河道淤泥、粉煤灰、木质纤维、改性钡长石粉、钠沸石粉、加气铝粉、钠基膨润土和聚丙烯酸酯共聚乳液混合输送至砂浆搅拌机中,再加入其总重量15%的水进行混合搅拌处理,搅拌转速为75r/min,搅拌时间为1.5h,得浆料A;
(2)再向所述浆料A中加入减水剂、发泡剂和稳泡剂,在砂浆搅拌机中搅拌混合35min,且搅拌转速为75r/min,得浆料B;
(3)之后将所述浆料B浇筑至模具中,通过压力机进行压制成型,且对砖料的压制强度为0.8MPa,压制时间为1.2s;
(4)接着将成型后的保温砖置于养护室中,控制养护室的环境条件:养护温度控制在30℃,养护湿度设定为10%,养护时间设定为20h;
(5)然后将养护后的保温砖放置于烘干机内进行烘干处理,且烘干温度为80℃,烘干时间28h;
(6)最后将烘干后的保温砖放置于高温煅烧炉中进行高温煅烧处理,即制得本发明的耐火保温砖,且上述的高温煅烧的温度为1200℃,高温煅烧时间为14h。
实施例3
一种耐火保温砖,包括以下原料:河道淤泥80kg、粉煤灰40kg、木质纤维20kg、改性钡长石粉25kg、钠沸石粉25kg、加气铝粉20kg、钠基膨润土15kg、聚丙烯酸酯共聚乳液8kg、减水剂5kg、发泡剂3kg和稳泡剂3kg;
所述改性钡长石粉通过以下步骤制得:先将钡长石粉碎至颗粒状,粒径为3-6mm,得钡长石颗粒,再将钡长石颗粒放入碳酸钠与高锰酸钾混合溶液中浸泡100min后,取出干燥,加入相当于钡长石颗粒重量4%的硅烷偶联剂KH550、相当于浊沸石重量3%的月桂醇硫酸钠和相当于浊沸石重量3%的氧化铝于500r/min下搅拌25min后研磨,过160目筛即得。
其中,上述的减水剂采用氨基磺酸钠;发泡剂采用碳酸氢钠;稳泡剂采用聚乙烯醇。
上述的一种耐火保温砖的制备方法,按照以下步骤进行:
(1)先将河道淤泥、粉煤灰、木质纤维、改性钡长石粉、钠沸石粉、加气铝粉、钠基膨润土和聚丙烯酸酯共聚乳液混合输送至砂浆搅拌机中,再加入其总重量20%的水进行混合搅拌处理,搅拌转速为80r/min,搅拌时间为2h,得浆料A;
(2)再向所述浆料A中加入减水剂、发泡剂和稳泡剂,在砂浆搅拌机中搅拌混合40min,且搅拌转速为80r/min,得浆料B;
(3)之后将所述浆料B浇筑至模具中,通过压力机进行压制成型,且对砖料的压制强度为1.0MPa,压制时间为1.5s;
(4)接着将成型后的保温砖置于养护室中,控制养护室的环境条件:养护温度控制在32℃,养护湿度设定为15%,养护时间设定为24h;
(5)然后将养护后的保温砖放置于烘干机内进行烘干处理,且烘干温度为85℃,烘干时间32h;
(6)最后将烘干后的保温砖放置于高温煅烧炉中进行高温煅烧处理,即制得本发明的耐火保温砖,且上述的高温煅烧的温度为1280℃,高温煅烧时间为16h。
实施例4
一种耐火保温砖,包括以下原料:河道淤泥70kg、粉煤灰35kg、木质纤维15kg、改性钡长石粉20kg、钠沸石粉20kg、加气铝粉15kg、钠基膨润土10kg、聚丙烯酸酯共聚乳液6kg、减水剂3kg、发泡剂2kg和稳泡剂2kg;
所述改性钡长石粉通过以下步骤制得:先将钡长石粉碎至颗粒状,粒径为3-6mm,得钡长石颗粒,再将钡长石颗粒放入碳酸钠与高锰酸钾混合溶液中浸泡80min后,取出干燥,加入相当于钡长石颗粒重量4%的硅烷偶联剂KH550、相当于浊沸石重量1%的月桂醇硫酸钠和相当于浊沸石重量1%的氧化铝于500r/min下搅拌15min后研磨,过120目筛即得。
其中,上述的减水剂采用木质素磺酸钙;发泡剂采用硅酸钠;稳泡剂采用聚乙烯醇。
上述的一种耐火保温砖的制备方法,按照以下步骤进行:
(1)先将河道淤泥、粉煤灰、木质纤维、改性钡长石粉、钠沸石粉、加气铝粉、钠基膨润土和聚丙烯酸酯共聚乳液混合输送至砂浆搅拌机中,再加入其总重量10%的水进行混合搅拌处理,搅拌转速为80r/min,搅拌时间为1h,得浆料;
(2)再向所述浆料中加入减水剂、发泡剂和稳泡剂,在砂浆搅拌机中搅拌混合40min,且搅拌转速为70r/min,得浆料B;
(3)之后将所述浆料B浇筑至模具中,通过压力机进行压制成型,且对砖料的压制强度为0.6MPa,压制时间为1.5s;
(4)接着将成型后的保温砖置于养护室中,控制养护室的环境条件:养护温度控制在32℃,养护湿度设定为5%,养护时间设定为16h;
(5)然后将养护后的保温砖放置于烘干机内进行烘干处理,且烘干温度为75℃,烘干时间32h
(6)最后将烘干后的保温砖放置于高温煅烧炉中进行高温煅烧处理,即制得本发明的耐火保温砖,且上述的高温煅烧的温度为1120℃,高温煅烧时间为16h。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (8)
1.一种耐火保温砖,其特征在于,包括以下按重量份计的原料:河道淤泥60-80份、粉煤灰30-40份、木质纤维10-20份、改性钡长石粉15-25份、钠沸石粉15-25份、加气铝粉10-20份、钠基膨润土5-15份、聚丙烯酸酯共聚乳液4-8份、减水剂1-5份、发泡剂1-3份和稳泡剂1-3份;
所述改性钡长石粉通过以下步骤制得:先将钡长石粉碎至颗粒状,粒径为3-6mm,得钡长石颗粒,再将钡长石颗粒放入碳酸钠与高锰酸钾混合溶液中浸泡80-100min后,取出干燥,加入相当于钡长石颗粒重量2-4%的硅烷偶联剂KH550、相当于浊沸石重量1-3%的月桂醇硫酸钠和相当于浊沸石重量1-3%的氧化铝于300-500r/min下搅拌15-25min后研磨,过120-160目筛即得。
2.根据权利要求1所述的一种耐火保温砖,其特征在于,包括以下按重量份计的原料:河道淤泥70份、粉煤灰35份、木质纤维15份、改性钡长石粉20份、钠沸石粉20份、加气铝粉15份、钠基膨润土10份、聚丙烯酸酯共聚乳液6份、减水剂3份、发泡剂2份和稳泡剂2份。
3.根据权利要求1所述的一种耐火保温砖,其特征在于,所述减水剂为木质素磺酸钙、聚丙烯酸钠或氨基磺酸钠中的一种。
4.根据权利要求1所述的一种耐火保温砖,其特征在于,所述发泡剂为硅酸钠、碳酸钙、碳酸镁或碳酸氢钠中的一种或者一种以上。
5.根据权利要求1所述的一种耐火保温砖,其特征在于,所述稳泡剂为硅树脂聚醚乳液、聚丙烯酰胺或聚乙烯醇中的一种。
6.一种如权利要求1-5任意一项所述的耐火保温砖的制备方法,其特征在于,包括以下步骤:
(1)按照所述重量份配比获取原料;
(2)将河道淤泥、粉煤灰、木质纤维、改性钡长石粉、钠沸石粉、加气铝粉、钠基膨润土和聚丙烯酸酯共聚乳液混合输送至砂浆搅拌机中,再加入其总重量10-20%的水进行混合搅拌处理,搅拌转速为70-80r/min,搅拌时间为1-2h,得浆料A;
(3)向所述浆料A中加入减水剂、发泡剂和稳泡剂,在砂浆搅拌机中搅拌混合30-40min,且搅拌转速为70-80r/min,得浆料B;
(4)将所述浆料B浇筑至模具中,通过压力机进行压制成型;
(5)将成型后的保温砖置于养护室中养护处理16-24h;
(6)将养护后的保温砖放置于烘干机内进行烘干处理,且烘干温度为75-85℃,烘干时间24-32h;
(7)将烘干后的保温砖放置于高温煅烧炉中进行高温煅烧处理,即可,且该高温煅烧的温度为1120-1280℃,高温煅烧时间为12-16h。
7.根据权利要求1所述的一种耐火保温砖的制备方法,其特征在于,在步骤(4)中,所述压力机的压制强度为0.6-1.0MPa,压制时间为1.0-1.5s。
8.根据权利要求1所述的一种耐火保温砖的制备方法,其特征在于,在步骤(5)中,所述养护室的养护温度为28-32℃,养护湿度为5-15%。
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CN108299008A (zh) * | 2018-04-04 | 2018-07-20 | 合肥永泰新型建材有限公司 | 一种免蒸泡沫混凝土砌块砖及其制备方法 |
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CN108299008A (zh) * | 2018-04-04 | 2018-07-20 | 合肥永泰新型建材有限公司 | 一种免蒸泡沫混凝土砌块砖及其制备方法 |
CN109133819A (zh) * | 2018-11-03 | 2019-01-04 | 垠星建设有限公司 | 一种建筑保温材料及其制备方法 |
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