CN108249893A - 一种利用废砖和塘泥生产的保温砖 - Google Patents
一种利用废砖和塘泥生产的保温砖 Download PDFInfo
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Abstract
本发明属于节能建材技术领域,具体涉及一种利用废砖和塘泥生产的保温砖。该保温砖的生产原料如下:废砖颗粒、塘泥、膨润土尾矿、粉煤灰、膨胀珍珠岩、凹凸棒粘土、硫酸钙、滑石粉、蒙脱石尾矿、页岩粉、发泡剂和水。该砖体包括以下生产步骤:(1)砖坯成型,(2)晾晒保养,(3)烧制成型。其中烧制成型过程在隧道窑中进行,隧道窑的预热还可以用于对塘泥进行烘干,得到所需生产原料。该发明的保温砖其传热系数、抗风化性能和抗冻性能相对较好,砖体密度较低。此外,该保温砖由于使用了可回收的固态垃圾作为生产原料,因此生产成本得到较低,具有较高的经济价值和环保价值。
Description
技术领域
本发明属于节能建材技术领域,具体涉及一种利用废砖和塘泥生产的保温砖。
背景技术
环保建筑是一种现代的建筑类型,通过绿色环保的建筑材料和保温节能的建筑设计的应用,实现建筑在使用过程中对能源需求的减少。这具有非常大生态价值。保温砖时是一种最基本的保温建材,这种建筑材料主要用于建筑墙面的砌筑,与传统的砖体相比,保温砖除了具有良好的结构强度,起到支撑防护的功能之外,还具有保温隔热的性能,通过该型砖体的使用可以提高建筑的保温隔热效果,保持建筑室内冬暖夏凉生活环境,降低建筑用于调节室内温度的能源消耗。
传统的保温砖使用膨润土、页岩土和其它矿物材料生产制造而成,需要消耗大量的资源和能源,砖体的生产成本较高。
发明内容
针对以上问题,本发明的目的在于提供一种利用废砖和塘泥生产的保温砖;改型保温砖的材料中使用了废砖和塘泥,既降低了成本,也对大量消解了工艺生产过程产生的垃圾废料。
一种利用废砖和塘泥生产的保温砖,保温砖按照质量份数由以下原料组成:废砖颗粒20-30份,塘泥20-25份,膨润土尾矿5-10份,粉煤灰10-15份,膨胀珍珠岩15-20份,凹凸棒粘土15-20份,硫酸钙5-8份,滑石粉3-6份,蒙脱石尾矿5-15份,页岩粉15-20份,发泡剂6-8份,水80-100份。
优选地,该保温砖按照质量份数由以下原料组成:废砖颗粒23-26份,塘泥22-24份,膨润土尾矿7-8份,粉煤灰12-13份,膨胀珍珠岩17-18份,凹凸棒粘土17-18份,硫酸钙6-8份,滑石粉3-4份,蒙脱石尾矿11-12份,页岩粉16-17份,发泡剂7-8份,水90-95份。
其中,塘泥为河流湖泊中的底泥,塘泥从水底捞出后,泥浆送入到隔膜压滤机中进行高压压榨,得到泥饼,泥饼送入到焙烧隧道窑中利用余热烘干,烘干后进行粉碎和磁选,得到的粉料作为生产保温砖的塘泥原料。塘泥经过过滤干燥和粉碎磁选后可以得到固态的粉料,经过磁选可以去除塘泥中可能存在金属材料,通过烧结所用的隧道窑的预热进行干燥,可以节约能源,降低生产成本。
本发明中,废砖颗粒为建筑垃圾废砖或砖厂生产的次品砖,经过颚式破碎机和锤式破碎机破碎,然后经振动筛筛分,得到所需粒径在2-5mm的作为生产保温砖的颗粒原料。使用废砖颗粒作为生产原料中的骨料,可以提高生产的砖体的结构强度和承载性能。
进一步优选地,发泡剂为碳化硅粉末;向砖体的原料中添加发泡剂可以在砖体烧结过程中形成空腔,空腔可以提高砖体的保温性能,并且降低砖体的密度。
其中,保温砖的制备方法如下:
(1)砖坯成型
按照质量份数将保温砖各原料混合后在强制性搅拌机中进行搅拌,搅拌均匀后的坯料输送到去自动砌块成型机中,由成型机将坯料压制成保温砖半成品。
(2)晾晒保养
将保温砖半成品送入到晾房中进行晾干保养,晾房中的温度为15-30℃,空气湿度为15-25%,晾晒至半成品含水率低于20%后,准备进行烧制。
(3)烧制成型
将晾干后的半成品砖坯送入到焙烧隧道窑中进行烧制,烧制过程分为两个阶段,第一阶段的烧结温度为500-600℃,烧制时间为6-8h,第二阶段的烧结温度为1000-1200℃,烧制时间为1-2h,烧制完成后将烧结砖从隧道窑中取出,进行自然冷却,冷却后进行码垛存放。
所述制备过程中,成型机的成型压力为2-2.5t/cm2;晾房的温湿度采用风扇进行控制,保持晾房通风干燥的环境;砖坯在焙烧隧道窑中高温烧制之前进行预热,预热段的升温速率为15-20℃/min,预热段将砖坯温度从室温升高到450-500℃。砖坯在晾房中晾晒的过程中,一方面可以降低砖体的含水量,为后续的烧结过程做准备,另一方面可以使得原料中的发泡剂发挥作用,在砖坯中形成气隙,气隙在后续的焙烧过程中可以膨胀成为保温砖中的空隙,提高保温砖的保温性能。
本发明提供的一种利用废砖和塘泥生产的保温砖,与现有技术相比,具有以下优点:
该型保温砖采用砖厂生产中产生的废砖作为骨料,同时还使用了塘泥作为原料,砖体的生产成本得到显著降低,砖体的生产过程消解了大量作为固态垃圾存在的可再生资源,对废料实现了有效利用,既节省垃圾处理费用,还具有极大地环保价值。
此外,本发明的保温砖材料中使用的膨胀珍珠岩,还添加了发泡剂,使得生产的保温砖的砖体密度下降,因此砖体的运输成本也得到了降低。
具体实施方式
以下对本发明的具体实施方式进行详细说明。应当理解的是,此处所描述的具体实施方式仅用于说明和解释本发明,并不用于限制本发明。
实施例1
按照质量份数准备保温砖原料:废砖颗粒20份,塘泥20份,膨润土尾矿5份,粉煤灰10份,膨胀珍珠岩15份,凹凸棒粘土15份,硫酸钙5份,滑石粉3份,蒙脱石尾矿5份,页岩粉15份,发泡剂6份,水80份。
其中,塘泥为河流湖泊中的底泥,塘泥从水底捞出后,泥浆送入到隔膜压滤机中进行高压压榨,得到泥饼,泥饼送入到焙烧隧道窑中利用余热烘干,烘干后进行粉碎和磁选得到的粉料;废砖颗粒为建筑垃圾废砖或砖厂生产的次品砖,经过颚式破碎机和锤式破碎机破碎,然后经振动筛筛分,得到所需粒径在2-5mm的作为生产保温砖的颗粒原料;发泡剂为碳化硅粉末。
按照如下步骤进行生产:
(1)砖坯成型
按照质量份数将保温砖各原料混合后在强制性搅拌机中进行搅拌,搅拌均匀后的坯料输送到去自动砌块成型机中,由成型机将坯料压制成保温砖半成品。
(2)晾晒保养
将保温砖半成品送入到晾房中进行晾干保养,晾房中的温度为15℃,空气湿度为15%,晾晒至半成品含水率低于20%后,准备进行烧制。
(3)烧制成型
将晾干后的半成品砖坯送入到焙烧隧道窑中进行烧制,烧制过程分为两个阶段,第一阶段的烧结温度为500℃,烧制时间为6h,第二阶段的烧结温度为1000℃,烧制时间为1h,烧制完成后将烧结砖从隧道窑中取出,进行自然冷却,冷却后进行码垛存放。
制备过程中,成型机的成型压力为2t/cm2;晾房的温湿度采用风扇进行控制,保持晾房通风干燥的环境;砖坯在焙烧隧道窑中高温烧制之前进行预热,预热段的升温速率为15℃/min,预热段将砖坯温度从室温升高到450℃。
实施例2
按照质量份数准备保温砖原料:废砖颗粒30份,塘泥25份,膨润土尾矿10份,粉煤灰15份,膨胀珍珠岩20份,凹凸棒粘土20份,硫酸钙8份,滑石粉6份,蒙脱石尾矿15份,页岩粉20份,发泡剂8份,水100份。
其中,塘泥为河流湖泊中的底泥,塘泥从水底捞出后,泥浆送入到隔膜压滤机中进行高压压榨,得到泥饼,泥饼送入到焙烧隧道窑中利用余热烘干,烘干后进行粉碎和磁选得到的粉料;废砖颗粒为建筑垃圾废砖或砖厂生产的次品砖,经过颚式破碎机和锤式破碎机破碎,然后经振动筛筛分,得到所需粒径在2-5mm的作为生产保温砖的颗粒原料;发泡剂为碳化硅粉末。
按照如下步骤进行生产:
(1)砖坯成型
按照质量份数将保温砖各原料混合后在强制性搅拌机中进行搅拌,搅拌均匀后的坯料输送到去自动砌块成型机中,由成型机将坯料压制成保温砖半成品。
(2)晾晒保养
将保温砖半成品送入到晾房中进行晾干保养,晾房中的温度为30℃,空气湿度为25%,晾晒至半成品含水率低于20%后,准备进行烧制。
(3)烧制成型
将晾干后的半成品砖坯送入到焙烧隧道窑中进行烧制,烧制过程分为两个阶段,第一阶段的烧结温度为600℃,烧制时间为8h,第二阶段的烧结温度为1200℃,烧制时间为2h,烧制完成后将烧结砖从隧道窑中取出,进行自然冷却,冷却后进行码垛存放。
制备过程中,成型机的成型压力为2.5t/cm2;晾房的温湿度采用风扇进行控制,保持晾房通风干燥的环境;砖坯在焙烧隧道窑中高温烧制之前进行预热,预热段的升温速率为20℃/min,预热段将砖坯温度从室温升高到500℃。
实施例3
按照质量份数准备保温砖原料:废砖颗粒25份,塘泥23份,膨润土尾矿8份,粉煤灰13份,膨胀珍珠岩18份,凹凸棒粘土17份,硫酸钙6份,滑石粉4份,蒙脱石尾矿12份,页岩粉17份,发泡剂7份,水90份。
其中,塘泥为河流湖泊中的底泥,塘泥从水底捞出后,泥浆送入到隔膜压滤机中进行高压压榨,得到泥饼,泥饼送入到焙烧隧道窑中利用余热烘干,烘干后进行粉碎和磁选得到的粉料;废砖颗粒为建筑垃圾废砖或砖厂生产的次品砖,经过颚式破碎机和锤式破碎机破碎,然后经振动筛筛分,得到所需粒径在2-5mm的作为生产保温砖的颗粒原料;发泡剂为碳化硅粉末。
按照如下步骤进行生产:
(1)砖坯成型
按照质量份数将保温砖各原料混合后在强制性搅拌机中进行搅拌,搅拌均匀后的坯料输送到去自动砌块成型机中,由成型机将坯料压制成保温砖半成品。
(2)晾晒保养
将保温砖半成品送入到晾房中进行晾干保养,晾房中的温度为25℃,空气湿度为20%,晾晒至半成品含水率低于20%后,准备进行烧制。
(3)烧制成型
将晾干后的半成品砖坯送入到焙烧隧道窑中进行烧制,烧制过程分为两个阶段,第一阶段的烧结温度为550℃,烧制时间为7h,第二阶段的烧结温度为1100℃,烧制时间为1.5h,烧制完成后将烧结砖从隧道窑中取出,进行自然冷却,冷却后进行码垛存放。
制备过程中,成型机的成型压力为2.3t/cm2;晾房的温湿度采用风扇进行控制,保持晾房通风干燥的环境;砖坯在焙烧隧道窑中高温烧制之前进行预热,预热段的升温速率为18℃/min,预热段将砖坯温度从室温升高到470℃。
实施例4
按照质量份数准备保温砖原料:废砖颗粒22份,塘泥23份,膨润土尾矿7份,粉煤灰14份,膨胀珍珠岩16份,凹凸棒粘土19份,硫酸钙6份,滑石粉5份,蒙脱石尾矿11份,页岩粉15份,发泡剂8份,水95份。
其中,塘泥为河流湖泊中的底泥,塘泥从水底捞出后,泥浆送入到隔膜压滤机中进行高压压榨,得到泥饼,泥饼送入到焙烧隧道窑中利用余热烘干,烘干后进行粉碎和磁选得到的粉料;废砖颗粒为建筑垃圾废砖或砖厂生产的次品砖,经过颚式破碎机和锤式破碎机破碎,然后经振动筛筛分,得到所需粒径在2-5mm的作为生产保温砖的颗粒原料;发泡剂为碳化硅粉末。
按照如下步骤进行生产:
(1)砖坯成型
按照质量份数将保温砖各原料混合后在强制性搅拌机中进行搅拌,搅拌均匀后的坯料输送到去自动砌块成型机中,由成型机将坯料压制成保温砖半成品。
(2)晾晒保养
将保温砖半成品送入到晾房中进行晾干保养,晾房中的温度为22℃,空气湿度为20%,晾晒至半成品含水率低于20%后,准备进行烧制。
(3)烧制成型
将晾干后的半成品砖坯送入到焙烧隧道窑中进行烧制,烧制过程分为两个阶段,第一阶段的烧结温度为600℃,烧制时间为6h,第二阶段的烧结温度为1150℃,烧制时间为2h,烧制完成后将烧结砖从隧道窑中取出,进行自然冷却,冷却后进行码垛存放。
制备过程中,成型机的成型压力为2.5t/cm2;晾房的温湿度采用风扇进行控制,保持晾房通风干燥的环境;砖坯在焙烧隧道窑中高温烧制之前进行预热,预热段的升温速率为15℃/min,预热段将砖坯温度从室温升高到500℃。
性能测试
根据GB/T 26538-2011《烧结保温砖和保温砌块》的测试方法,对本实施保温砖的密度等级、抗风化性能、传热系数和抗冻性能进行测试得到如下测试结果:
表1:本实施例的性能测试结果
以上试验数据表面,本实施例的保温砖,其抗风化性能、抗冻性能和产热系数等级均很优秀,可以满足相关国家标准的要求,并且密度等级较低,砖体较轻。此外,经统计本实施例保温砖较市场上常规保温砖,其生产成本下降了6-8%,具有较高的经济价值。
以上对本发明的具体实施例进行了描述。需要理解的是,本发明并不局限于上述特定实施方式,本领域技术人员可以在权利要求的范围内做出各种变形或修改,这并不影响本发明的实质内容。
Claims (9)
1.一种利用废砖和塘泥生产的保温砖,其特征在于:所述保温砖按照质量份数由以下原料组成:废砖颗粒20-30份,塘泥20-25份,膨润土尾矿5-10份,粉煤灰10-15份,膨胀珍珠岩15-20份,凹凸棒粘土15-20份,硫酸钙5-8份,滑石粉3-6份,蒙脱石尾矿5-15份,页岩粉15-20份,发泡剂6-8份,水80-100份。
2.根据权利要求1所述一种利用废砖和塘泥生产的保温砖,其特征在于:所述保温砖按照质量份数由以下原料组成:废砖颗粒23-26份,塘泥22-24份,膨润土尾矿7-8份,粉煤灰12-13份,膨胀珍珠岩17-18份,凹凸棒粘土17-18份,硫酸钙6-8份,滑石粉3-4份,蒙脱石尾矿11-12份,页岩粉16-17份,发泡剂7-8份,水90-95份。
3.根据权利要求1所述一种利用废砖和塘泥生产的保温砖,其特征在于:所述塘泥为河流湖泊中的底泥,塘泥从水底捞出后,泥浆送入到隔膜压滤机中进行高压压榨,得到泥饼,泥饼送入到焙烧隧道窑中利用余热烘干,烘干后进行粉碎和磁选,得到的粉料作为生产保温砖的塘泥原料。
4.根据权利要求1所述一种利用废砖和塘泥生产的保温砖,其特征在于:所述废砖颗粒为建筑垃圾废砖或砖厂生产的次品砖,经过颚式破碎机和锤式破碎机破碎,然后经振动筛筛分,得到所需粒径在2-5mm的作为生产保温砖的颗粒原料。
5.根据权利要求1所述一种利用废砖和塘泥生产的保温砖,其特征在于:所述发泡剂为碳化硅粉末。
6.根据权利要求1所述一种利用废砖和塘泥生产的保温砖,其特征在于:所述保温砖的制备方法如下:
(1)砖坯成型
按照质量份数将保温砖各原料混合后在强制性搅拌机中进行搅拌,搅拌均匀后的坯料输送到去自动砌块成型机中,由成型机将坯料压制成保温砖半成品;
(2)晾晒保养
将保温砖半成品送入到晾房中进行晾干保养,晾房中的温度为15-30℃,空气湿度为15-25%,晾晒至半成品含水率低于20%后,准备进行烧制;
(3)烧制成型
将晾干后的半成品砖坯送入到焙烧隧道窑中进行烧制,烧制过程分为两个阶段,第一阶段的烧结温度为500-600℃,烧制时间为6-8h,第二阶段的烧结温度为1000-1200℃,烧制时间为1-2h,烧制完成后将烧结砖从隧道窑中取出,进行自然冷却,冷却后进行码垛存放。
7.根据权利要求6所述一种利用废砖和塘泥生产的保温砖,其特征在于:成型机的成型压力为2-2.5t/cm²。
8.根据权利要求6所述一种利用废砖和塘泥生产的保温砖,其特征在于:所述晾房的温湿度采用风扇进行控制,保持晾房通风干燥的环境。
9.根据权利要求6所述一种利用废砖和塘泥生产的保温砖,其特征在于:所述砖坯在焙烧隧道窑中高温烧制之前进行预热,预热段的升温速率为15-20℃/min,预热段将砖坯温度从室温升高到450-500℃。
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CN103172347A (zh) * | 2013-02-13 | 2013-06-26 | 清远绿由环保科技有限公司 | 一种用陶瓷废泥生产的烧结多孔轻质保温砖及其制造方法 |
CN106116479A (zh) * | 2016-06-17 | 2016-11-16 | 福建工程学院 | 一种利用污泥与建筑废弃物烧结自保温砖的方法 |
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CN103172347A (zh) * | 2013-02-13 | 2013-06-26 | 清远绿由环保科技有限公司 | 一种用陶瓷废泥生产的烧结多孔轻质保温砖及其制造方法 |
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