CN112028631B - 一种古建砖的烧制方法 - Google Patents
一种古建砖的烧制方法 Download PDFInfo
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Abstract
本发明公开了一种古建砖的烧制方法,其特征在于,包括如下步骤:(1)原料称取、(2)砖坯制备、(3)烘干处理、(4)烧制处理、(5)还原处理、(6)冷却处理。本发明改善了古建砖的制备方法,其整体工艺简单,设置合理,且环保污染小,利于推广应用,制得的古建砖品相好、使用强度高、寿命长,稳定性佳。
Description
技术领域
本发明属于古建筑材料生产技术领域,特别是一种古建砖的烧制方法。
背景技术
随着现代生活水平的逐步提高,人们对建筑的形式追求变得多样化,而现代仿古建筑就是其中的一种建筑形式,古建砖,尤其是青砖作为仿古建筑的主要材料,其市场需求变得越来越大,因此,青砖的烧制技术也越来越受重视。传统的青砖烧制是通过土窑的形式烧制,其烧制过程中,污染大、能源消耗很大,无法达到环保的要求,并且制得的古建砖在力学等性能品质上有很大的进步空间。因此需要一种新型的制备工艺。
发明内容
本发明的目的是提供一种古建砖的烧制方法,以解决现有技术中的不足。
本发明采用的技术方案如下:
一种古建砖的烧制方法,包括如下步骤:
(1)原料称取:
按对应重量份称取下列原料备用:60~65份石墨矿围岩、8~12份水泥、4~8份细沙、10~15份磷矿渣、5~10份增强凹凸棒土、3~6份粉煤灰;
(2)砖坯制备:
将步骤(1)称取的石墨矿围岩、水泥、细沙、磷矿渣、增强凹凸棒土、粉煤灰共同混合,然后加水调节整体的水含量至30~35%,混匀后再压制成条状,最后经过切割后得砖坯备用;
(3)烘干处理:
将步骤(2)制得的砖坯码放在烘干窑内进行烘干处理,完成后取出备用;
(4)烧制处理:
将步骤(3)处理后的砖坯移放到烧结窑内进行烧制处理,完成后取出备用;
(5)还原处理:
向步骤(4)处理后的烧结窑内通入煤气进行还原处理,完成后取出备用;
(6)冷却处理:
将步骤(5)处理后的砖坯放入到变温室内进行冷却处理,完成后取出即得成品古建砖。
进一步的,步骤(1)中所述的增强凹凸棒土的制备方法包括如下步骤:
1)对凹凸棒土进行煅烧处理,1~1.5h后取出,然后用酸液浸泡处理4~6min后取出,最后用去离子水冲洗一遍后备用;
2)将步骤1)处理后的凹凸棒土浸入到钛酸酯偶联剂中,高速搅拌处理10~15min后滤出备用;
3)将步骤2)处理后的凹凸棒土投入到改性液中,超声处理50~55min后滤出,最后干燥至水含量不大于10%即可。
进一步的,步骤1)中所述的煅烧处理时控制煅烧的温度为800~850℃;所述的酸液是质量分数为0.3~0.5%的磷酸溶液。
进一步的,步骤2)中所述的高速搅拌处理时控制搅拌的转速为2600~2800rpm。
进一步的,步骤3)中所述的改性液是由如下对应重量份的物质组成:16~20份十二烷基三甲基溴化铵、3~5份聚乙烯醇、4~8份硬脂酸锌、6~9份纳米二氧化钛、3~6份双氧水、200~240份水。
进一步的,步骤3)中所述的超声处理时控制超声波的频率为600~660kHz。
进一步的,步骤3)中所述的干燥的温度为100~110℃。
进一步的,步骤(4)中所述的烧制处理时控制烧结窑内的温度为1050~1100℃、时长为3~5h。
进一步的,步骤(5)中所述的还原处理的具体操作是以15~18m3/h的流量向烧结窑内通入煤气,进行无氧还原烧制处理,时间控制为8~10h。
进一步的,步骤(6)中所述的冷却处理时控制变温室内的降温速度为120~130℃/h。
本发明具有如下有益效果:
本发明改善了古建砖的制备方法,其整体工艺简单,设置合理,且环保污染小,利于推广应用,在烧制中以石墨矿围岩为主体成分,辅以水泥、细沙、磷矿渣进行加工制造,为了进一步提升使用品质,又制备添加了一种增强凹凸棒土成分,此增强凹凸棒土是一种基体材料为凹凸棒土,通过改性而成,目的是为了提升凹凸棒土的结构和活性,进而增强古建砖的使用强度等品质,其中先进行了煅烧处理,提升了凹凸棒土的比表面积和吸附能力,然后用酸液浸泡去除了杂质,再用钛酸酯偶联剂提高了表面的活性及反应能力,最后用改性液浸泡改性,在超声的作用下,改性液中的纳米二氧化钛渗入到片层的凹凸棒土层间,形成了一种复合的颗粒填料成分,并在双氧水的作用下,表面活性进一步提升,在之后古建砖的烧制中,能够与基体发生稳固的交联结合,显著提升了砖体的强度、耐候性等。本发明方法制得的古建砖品相好、使用强度高、寿命长,稳定性佳,极具推广应用价值和生产效益。
具体实施方式
下面将结合本发明实施例的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
一种古建砖的烧制方法,包括如下步骤:
(1)原料称取:
按对应重量份称取下列原料备用:60份石墨矿围岩、8份水泥、4份细沙、10份磷矿渣、5份增强凹凸棒土、3份粉煤灰;
(2)砖坯制备:
将步骤(1)称取的石墨矿围岩、水泥、细沙、磷矿渣、增强凹凸棒土、粉煤灰共同混合,然后加水调节整体的水含量至30%,混匀后再压制成条状,最后经过切割后得砖坯备用;
(3)烘干处理:
将步骤(2)制得的砖坯码放在烘干窑内进行烘干处理,完成后取出备用;
(4)烧制处理:
将步骤(3)处理后的砖坯移放到烧结窑内进行烧制处理,完成后取出备用;
(5)还原处理:
向步骤(4)处理后的烧结窑内通入煤气进行还原处理,完成后取出备用;
(6)冷却处理:
将步骤(5)处理后的砖坯放入到变温室内进行冷却处理,完成后取出即得成品古建砖。
步骤(1)中所述的增强凹凸棒土的制备方法包括如下步骤:
1)对凹凸棒土进行煅烧处理,1h后取出,然后用酸液浸泡处理4min后取出,最后用去离子水冲洗一遍后备用;
2)将步骤1)处理后的凹凸棒土浸入到钛酸酯偶联剂中,高速搅拌处理10min后滤出备用;
3)将步骤2)处理后的凹凸棒土投入到改性液中,超声处理50min后滤出,最后干燥至水含量不大于10%即可。
步骤1)中所述的煅烧处理时控制煅烧的温度为800℃;所述的酸液是质量分数为0.3%的磷酸溶液。
步骤2)中所述的高速搅拌处理时控制搅拌的转速为2600rpm。
步骤3)中所述的改性液是由如下对应重量份的物质组成:16份十二烷基三甲基溴化铵、3份聚乙烯醇、4份硬脂酸锌、6份纳米二氧化钛、3份双氧水、200份水。
步骤3)中所述的超声处理时控制超声波的频率为600kHz。
步骤3)中所述的干燥的温度为100℃。
步骤(4)中所述的烧制处理时控制烧结窑内的温度为1050℃、时长为3h。
步骤(5)中所述的还原处理的具体操作是以15m3/h的流量向烧结窑内通入煤气,进行无氧还原烧制处理,时间控制为8h。
步骤(6)中所述的冷却处理时控制变温室内的降温速度为120℃/h。
实施例2
一种古建砖的烧制方法,包括如下步骤:
(1)原料称取:
按对应重量份称取下列原料备用:63份石墨矿围岩、10份水泥、6份细沙、13份磷矿渣、8份增强凹凸棒土、5份粉煤灰;
(2)砖坯制备:
将步骤(1)称取的石墨矿围岩、水泥、细沙、磷矿渣、增强凹凸棒土、粉煤灰共同混合,然后加水调节整体的水含量至33%,混匀后再压制成条状,最后经过切割后得砖坯备用;
(3)烘干处理:
将步骤(2)制得的砖坯码放在烘干窑内进行烘干处理,完成后取出备用;
(4)烧制处理:
将步骤(3)处理后的砖坯移放到烧结窑内进行烧制处理,完成后取出备用;
(5)还原处理:
向步骤(4)处理后的烧结窑内通入煤气进行还原处理,完成后取出备用;
(6)冷却处理:
将步骤(5)处理后的砖坯放入到变温室内进行冷却处理,完成后取出即得成品古建砖。
步骤(1)中所述的增强凹凸棒土的制备方法包括如下步骤:
1)对凹凸棒土进行煅烧处理,1.3h后取出,然后用酸液浸泡处理5min后取出,最后用去离子水冲洗一遍后备用;
2)将步骤1)处理后的凹凸棒土浸入到钛酸酯偶联剂中,高速搅拌处理12min后滤出备用;
3)将步骤2)处理后的凹凸棒土投入到改性液中,超声处理52min后滤出,最后干燥至水含量不大于10%即可。
步骤1)中所述的煅烧处理时控制煅烧的温度为840℃;所述的酸液是质量分数为0.4%的磷酸溶液。
步骤2)中所述的高速搅拌处理时控制搅拌的转速为2700rpm。
步骤3)中所述的改性液是由如下对应重量份的物质组成:18份十二烷基三甲基溴化铵、4份聚乙烯醇、6份硬脂酸锌、8份纳米二氧化钛、5份双氧水、220份水。
步骤3)中所述的超声处理时控制超声波的频率为630kHz。
步骤3)中所述的干燥的温度为105℃。
步骤(4)中所述的烧制处理时控制烧结窑内的温度为1080℃、时长为4h。
步骤(5)中所述的还原处理的具体操作是以17m3/h的流量向烧结窑内通入煤气,进行无氧还原烧制处理,时间控制为9h。
步骤(6)中所述的冷却处理时控制变温室内的降温速度为125℃/h。
实施例3
一种古建砖的烧制方法,包括如下步骤:
(1)原料称取:
按对应重量份称取下列原料备用:65份石墨矿围岩、12份水泥、8份细沙、15份磷矿渣、10份增强凹凸棒土、6份粉煤灰;
(2)砖坯制备:
将步骤(1)称取的石墨矿围岩、水泥、细沙、磷矿渣、增强凹凸棒土、粉煤灰共同混合,然后加水调节整体的水含量至35%,混匀后再压制成条状,最后经过切割后得砖坯备用;
(3)烘干处理:
将步骤(2)制得的砖坯码放在烘干窑内进行烘干处理,完成后取出备用;
(4)烧制处理:
将步骤(3)处理后的砖坯移放到烧结窑内进行烧制处理,完成后取出备用;
(5)还原处理:
向步骤(4)处理后的烧结窑内通入煤气进行还原处理,完成后取出备用;
(6)冷却处理:
将步骤(5)处理后的砖坯放入到变温室内进行冷却处理,完成后取出即得成品古建砖。
步骤(1)中所述的增强凹凸棒土的制备方法包括如下步骤:
1)对凹凸棒土进行煅烧处理,1.5h后取出,然后用酸液浸泡处理6min后取出,最后用去离子水冲洗一遍后备用;
2)将步骤1)处理后的凹凸棒土浸入到钛酸酯偶联剂中,高速搅拌处理15min后滤出备用;
3)将步骤2)处理后的凹凸棒土投入到改性液中,超声处理55min后滤出,最后干燥至水含量不大于10%即可。
步骤1)中所述的煅烧处理时控制煅烧的温度为850℃;所述的酸液是质量分数为0.5%的磷酸溶液。
步骤2)中所述的高速搅拌处理时控制搅拌的转速为2800rpm。
步骤3)中所述的改性液是由如下对应重量份的物质组成:20份十二烷基三甲基溴化铵、5份聚乙烯醇、8份硬脂酸锌、9份纳米二氧化钛、6份双氧水、240份水。
步骤3)中所述的超声处理时控制超声波的频率为660kHz。
步骤3)中所述的干燥的温度为110℃。
步骤(4)中所述的烧制处理时控制烧结窑内的温度为1100℃、时长为5h。
步骤(5)中所述的还原处理的具体操作是以18m3/h的流量向烧结窑内通入煤气,进行无氧还原烧制处理,时间控制为10h。
步骤(6)中所述的冷却处理时控制变温室内的降温速度为130℃/h。
对比实施例1
一种古建砖的烧制方法,包括如下步骤:
(1)原料称取:
按对应重量份称取下列原料备用:63份石墨矿围岩、10份水泥、6份细沙、13份磷矿渣、8份凹凸棒土、5份粉煤灰;
(2)砖坯制备:
将步骤(1)称取的石墨矿围岩、水泥、细沙、磷矿渣、凹凸棒土、粉煤灰共同混合,然后加水调节整体的水含量至33%,混匀后再压制成条状,最后经过切割后得砖坯备用;
(3)烘干处理:
将步骤(2)制得的砖坯码放在烘干窑内进行烘干处理,完成后取出备用;
(4)烧制处理:
将步骤(3)处理后的砖坯移放到烧结窑内进行烧制处理,完成后取出备用;
(5)还原处理:
向步骤(4)处理后的烧结窑内通入煤气进行还原处理,完成后取出备用;
(6)冷却处理:
将步骤(5)处理后的砖坯放入到变温室内进行冷却处理,完成后取出即得成品古建砖。
本对比实施例1与实施例2相比,区别仅在于,用等质量份的普通凹凸棒土取代增强凹凸棒土成分,除此外的方法步骤均相同。
对上述实施例1~3、对比实施例1制得的古建砖进行性能测试发现,本发明实施例1~3对应制得的古建砖相较于对比实施例1而言,强度性能提升了25%以上、耐水性能提高了15%以上,寿命延长了30%左右,极具推广使用价值和市场竞争力。
以上所述仅为本发明的较佳实施例,但本发明不以所示限定实施范围,凡是依照本发明的构想所作的改变,或修改为等同变化的等效实施例,仍未超出说明书所涵盖的精神时,均应在本发明的保护范围内。
Claims (1)
1.一种古建砖的烧制方法,其特征在于,包括如下步骤:(1)原料称取:按对应重量份称取下列原料备用:60~65份石墨矿围岩、8~12份水泥、4~8份细沙、10~15份磷矿渣、5~10份增强凹凸棒土、3~6份粉煤灰;(2)砖坯制备:将步骤(1)称取的石墨矿围岩、水泥、细沙、磷矿渣、增强凹凸棒土、粉煤灰共同混合,然后加水调节整体的水含量至30~35%,混匀后再压制成条状,最后经过切割后得砖坯备用;(3)烘干处理:将步骤(2)制得的砖坯码放在烘干窑内进行烘干处理,完成后取出备用;(4)烧制处理:将步骤(3)处理后的砖坯移放到烧结窑内进行烧制处理,完成后取出备用;(5)还原处理:向步骤(4)处理后的烧结窑内通入煤气进行还原处理,完成后取出备用;(6)冷却处理:将步骤(5)处理后的砖坯放入到变温室内进行冷却处理,完成后取出即得成品古建砖;
步骤(1)中所述的增强凹凸棒土的制备方法包括如下步骤:1)对凹凸棒土进行煅烧处理,1~1.5h后取出,然后用酸液浸泡处理4~6min后取出,最后用去离子水冲洗一遍后备用;2)将步骤1)处理后的凹凸棒土浸入到钛酸酯偶联剂中,高速搅拌处理10~15min后滤出备用;3)将步骤2)处理后的凹凸棒土投入到改性液中,超声处理50~55min后滤出,最后干燥至水含量不大于10%即可;
步骤1)中所述的煅烧处理时控制煅烧的温度为800~850℃;所述的酸液是质量分数为0.3~0.5%的磷酸溶液;
步骤2)中所述的高速搅拌处理时控制搅拌的转速为2600~2800rpm;
步骤3)中所述的改性液是由如下对应重量份的物质组成:16~20份十二烷基三甲基溴化铵、3~5份聚乙烯醇、4~8份硬脂酸锌、6~9份纳米二氧化钛、3~6份双氧水、200~240份水;
步骤3)中所述的超声处理时控制超声波的频率为600~660kHz;
步骤3)中所述的干燥的温度为100~110℃;
步骤(4)中所述的烧制处理时控制烧结窑内的温度为1050~1100℃、时长为3~5h;
步骤(5)中所述的还原处理的具体操作是以15~18m3/h的流量向烧结窑内通入煤气,进行无氧还原烧制处理,时间控制为8~10h;
步骤(6)中所述的冷却处理时控制变温室内的降温速度为120~130℃/h。
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