CN105967647A - 一种低吸水率高耐水烧结粘土空心砖及其制备方法 - Google Patents
一种低吸水率高耐水烧结粘土空心砖及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种低吸水率高耐水烧结粘土空心砖及其制备方法,其由以下重量份的原料制成:黄砂18‑27、铝硅酸盐废渣22‑34、鹅卵石11‑19、硬脂酸钠3‑5、珍珠陶土40‑50、脱硫石膏废料16‑24、硅渣 12‑20、疏水性气相二氧化硅5‑10、硼泥15‑25、黑曜岩11‑17、锂瓷石14‑26、聚乙烯吡咯烷酮8‑12、菱苦土5‑10、松鳞7‑13、陶瓷废渣 15‑20、透辉石10‑15、氢氧化钙9‑16、石油炼化废油泥14‑22、水适量。本发明具有较低的吸水率和优异的耐水性,同时还具有良好的机械强度、耐腐蚀性和耐久性。
Description
技术领域
本发明涉及一种空心砖及其制备方法,具体涉及一种低吸水率高耐水烧结粘土空心砖及其制备方法。
背景技术
空心砖是建筑行业常用的墙体主材,由于质轻、消耗原材少等优势,已经成为国家建筑部门首先推荐的产品。烧结粘土空心砖是以粘土、矿物原料等为主要原料,经过原料处理、成型、烧结制成。烧结粘土空心砖具有质轻、强度高、保温、隔音降噪性能好,环保、无污染等优点,是框架结构建筑物的理想填充材料。近几年随着建筑行业的快速发展,对烧结粘土空心砖的性能要求越来越高。目前市场上的烧结粘土空心砖仍存在着吸水率高,耐水性差的缺点,无法满足市场的需求。
发明内容
本发明的目的在于提供一种低吸水率高耐水烧结粘土空心砖及其制备方法。
为实现上述目的,本发明采用的技术方案如下:
一种低吸水率高耐水烧结粘土空心砖,由以下重量份的原料制成:黄砂18-27、铝硅酸盐废渣22-34、鹅卵石11-19、硬脂酸钠3-5、珍珠陶土40-50、脱硫石膏废料16-24、硅渣 12-20、疏水性气相二氧化硅5-10、硼泥15-25、黑曜岩11-17、锂瓷石14-26、聚乙烯吡咯烷酮8-12、菱苦土5-10、松鳞7-13、陶瓷废渣 15-20、透辉石10-15、氢氧化钙9-16、石油炼化废油泥14-22、水适量。
一种低吸水率高耐水烧结粘土空心砖的制备方法,包括以下步骤:
(1)将铝硅酸盐废渣、鹅卵石、脱硫石膏废料、硅渣混合均匀,粉碎,过100-150目筛,加入适量的水,充分搅拌均匀,制球,粒径控制在1-2mm,然后将制得的生料球在90-100℃下干燥至含水率在2%以下,然后将干燥后的生料球置于微波炉焙烧炉内焙烧:先控制微波功率在700-800W,焙烧20-30min,再控制微波功率在400-500W,焙烧30-40min,控制微波功率在800-900W,焙烧15-25min,冷却至室温,即得陶粒;
(2)将黑曜岩、锂瓷石、陶瓷废渣、透辉石混合均匀,然后送入转锤式矿物纤维粉碎机粉碎,得到初级矿物纤维,然后加入适量的水搅拌制成浓度为50-55%的浆状矿物纤维,然后加入相当于浆状矿物纤维重量2-4%的亚甲基二萘磺酸钠、1-2%的十二烷基硫酸钠和1-2%的十八烷基二羟乙基甜菜碱,在5000-6000r/min的转速下球磨分散15-20min,再在功率为500-600W的超声波下分散14-18min,过滤,洗涤,烘干后置于置于马弗炉内焙烧:先以4-6℃/min升温至510-550℃,保温25-35min,再以2-5℃/min升温至830-890℃,保温15-25min,再以5-7℃/min降温至460-520℃,保温30-40min,冷却至室温,即得矿物纤维;
(3)将黄砂、珍珠陶土、硼泥、石油炼化废油泥、疏水性气相二氧化硅、硬脂酸钠、松鳞混合均匀,再加入适量的水进行一次搅拌,搅拌速度为300-400r/min,搅拌时间为12-18min,搅拌均匀后静置陈化36-48h,然后向陈化后的原料中加入余下原料以及步骤(1)制得的陶粒和步骤(2)制得的矿物纤维进行二次混合,搅拌速度为550-650r/min,搅拌时间为8-14min;
(4)将步骤(3)制得的混合料加入空心砖制砖机中压制成型,脱模后将砖坯置于干燥窑中,在110-120℃温度下干燥至含水率≤2%,然后将烘干的砖坯送入烧结窑中,在1060-1120℃温度下烧结1-2h,冷却至室温,即为所需的烧结粘土空心砖。
本发明的有益效果:
(1)本发明烧结粘土空心砖以黄砂、珍珠陶土、硼泥等原料为主料,以石油炼化废油泥、疏水性气相二氧化硅、硬脂酸钠等原料为防水材料,具有较低的吸水率和优异的耐水性,同时还具有良好的机械强度、耐腐蚀性和耐久性。
(2)本发明采用铝硅酸盐废渣、鹅卵石、脱硫石膏废料、硅渣等原料制得的陶粒和黑曜岩、锂瓷石、陶瓷废渣、透辉石等原料制得的矿物纤维相互复合,交错粘压在一起,均匀地分散在水泥空心砖中,可以显著降低烧结粘土空心砖的导热系数,使得其具有优异的隔热保温性能,同时还可以改善烧结粘土空心砖的耐腐蚀性、耐久性和力学性能。
具体实施方式
一种低吸水率高耐水烧结粘土空心砖,由以下重量(kg)的原料制成:黄砂23、铝硅酸盐废渣29、鹅卵石14、硬脂酸钠4、珍珠陶土45、脱硫石膏废料20、硅渣 17、疏水性气相二氧化硅8、硼泥20、黑曜岩14、锂瓷石22、聚乙烯吡咯烷酮10、菱苦土8、松鳞11、陶瓷废渣 18、透辉石12、氢氧化钙13、石油炼化废油泥16、水适量。
一种低吸水率高耐水烧结粘土空心砖的制备方法,包括以下步骤:
(1)将铝硅酸盐废渣、鹅卵石、脱硫石膏废料、硅渣混合均匀,粉碎,过120目筛,加入适量的水,充分搅拌均匀,制球,粒径控制在1.5mm,然后将制得的生料球在95℃下干燥至含水率在2%以下,然后将干燥后的生料球置于微波炉焙烧炉内焙烧:先控制微波功率在750W,焙烧25min,再控制微波功率在450W,焙烧35min,控制微波功率在850W,焙烧20min,冷却至室温,即得陶粒;
(2)将黑曜岩、锂瓷石、陶瓷废渣、透辉石混合均匀,然后送入转锤式矿物纤维粉碎机粉碎,得到初级矿物纤维,然后加入适量的水搅拌制成浓度为52%的浆状矿物纤维,然后加入相当于浆状矿物纤维重量3%的亚甲基二萘磺酸钠、1.5%的十二烷基硫酸钠和1.5%的十八烷基二羟乙基甜菜碱,在5500r/min的转速下球磨分散18min,再在功率为600W的超声波下分散14min,过滤,洗涤,烘干后置于置于马弗炉内焙烧:先以5℃/min升温至530℃,保温30min,再以3℃/min升温至860℃,保温20min,再以6℃/min降温至490℃,保温35min,冷却至室温,即得矿物纤维;
(3)将黄砂、珍珠陶土、硼泥、石油炼化废油泥、疏水性气相二氧化硅、硬脂酸钠、松鳞混合均匀,再加入适量的水进行一次搅拌,搅拌速度为350r/min,搅拌时间为16min,搅拌均匀后静置陈化48h,然后向陈化后的原料中加入余下原料以及步骤(1)制得的陶粒和步骤(2)制得的矿物纤维进行二次混合,搅拌速度为600r/min,搅拌时间为10min;
(4)将步骤(3)制得的混合料加入空心砖制砖机中压制成型,脱模后将砖坯置于干燥窑中,在115℃温度下干燥至含水率≤2%,然后将烘干的砖坯送入烧结窑中,在1100℃温度下烧结1h,冷却至室温,即为所需的烧结粘土空心砖。
上述实施例制得的水泥空心砖的主要性能检测结果如下表所示:
检测项目 | 单位 | 检测结果 |
表观密度 | kg/m3 | 1274 |
抗压强度 | MPa | 7.7 |
导热系数 | W/(m•K) | 0.145 |
吸水率 | % | 0.62 |
Claims (2)
1.一种低吸水率高耐水烧结粘土空心砖,其特征在于,由以下重量份的原料制成:黄砂18-27、铝硅酸盐废渣22-34、鹅卵石11-19、硬脂酸钠3-5、珍珠陶土40-50、脱硫石膏废料16-24、硅渣 12-20、疏水性气相二氧化硅5-10、硼泥15-25、黑曜岩11-17、锂瓷石14-26、聚乙烯吡咯烷酮8-12、菱苦土5-10、松鳞7-13、陶瓷废渣 15-20、透辉石10-15、氢氧化钙9-16、石油炼化废油泥14-22、水适量。
2.一种如权利要求1所述的低吸水率高耐水烧结粘土空心砖的制备方法,其特征在于,包括以下步骤:
(1)将铝硅酸盐废渣、鹅卵石、脱硫石膏废料、硅渣混合均匀,粉碎,过100-150目筛,加入适量的水,充分搅拌均匀,制球,粒径控制在1-2mm,然后将制得的生料球在90-100℃下干燥至含水率在2%以下,然后将干燥后的生料球置于微波炉焙烧炉内焙烧:先控制微波功率在700-800W,焙烧20-30min,再控制微波功率在400-500W,焙烧30-40min,控制微波功率在800-900W,焙烧15-25min,冷却至室温,即得陶粒;
(2)将黑曜岩、锂瓷石、陶瓷废渣、透辉石混合均匀,然后送入转锤式矿物纤维粉碎机粉碎,得到初级矿物纤维,然后加入适量的水搅拌制成浓度为50-55%的浆状矿物纤维,然后加入相当于浆状矿物纤维重量2-4%的亚甲基二萘磺酸钠、1-2%的十二烷基硫酸钠和1-2%的十八烷基二羟乙基甜菜碱,在5000-6000r/min的转速下球磨分散15-20min,再在功率为500-600W的超声波下分散14-18min,过滤,洗涤,烘干后置于置于马弗炉内焙烧:先以4-6℃/min升温至510-550℃,保温25-35min,再以2-5℃/min升温至830-890℃,保温15-25min,再以5-7℃/min降温至460-520℃,保温30-40min,冷却至室温,即得矿物纤维;
(3)将黄砂、珍珠陶土、硼泥、石油炼化废油泥、疏水性气相二氧化硅、硬脂酸钠、松鳞混合均匀,再加入适量的水进行一次搅拌,搅拌速度为300-400r/min,搅拌时间为12-18min,搅拌均匀后静置陈化36-48h,然后向陈化后的原料中加入余下原料以及步骤(1)制得的陶粒和步骤(2)制得的矿物纤维进行二次混合,搅拌速度为550-650r/min,搅拌时间为8-14min;
(4)将步骤(3)制得的混合料加入空心砖制砖机中压制成型,脱模后将砖坯置于干燥窑中,在110-120℃温度下干燥至含水率≤2%,然后将烘干的砖坯送入烧结窑中,在1060-1120℃温度下烧结1-2h,冷却至室温,即为所需的烧结粘土空心砖。
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