CN105399442A - 一种城市路面用耐沾污陶瓷透水地砖 - Google Patents

一种城市路面用耐沾污陶瓷透水地砖 Download PDF

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CN105399442A
CN105399442A CN201510723155.2A CN201510723155A CN105399442A CN 105399442 A CN105399442 A CN 105399442A CN 201510723155 A CN201510723155 A CN 201510723155A CN 105399442 A CN105399442 A CN 105399442A
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高翠莲
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Abstract

本发明公开了一种城市路面用耐沾污陶瓷透水地砖,由下列重量份的原料制备制成:污水厂污泥40-43、稻壳6-7、钾长石粉4-5、粉煤灰10-12、水玻璃10-12、伟晶石18-20、石英砂6-7、氮化硅8-9、二氧化钛3-4、氧化锆5-6、磷酸二氢铝4-5、预胶化淀粉2-3。本发明添加伟晶石、二氧化钛、二氧化锆等成分通过一系列的工艺烧结而成,提高了产品的致密性以及多孔隙性,具有强度高、表面光洁、抗污能力强,透水性好,适合公园、运动场、城市道路使用。

Description

一种城市路面用耐沾污陶瓷透水地砖
技术领域
本发明涉及建筑材料技术领域,尤其涉及一种城市路面用耐沾污陶瓷透水地砖。
背景技术
海绵城市是指城市能够像海绵一样,在适应环境变化和应对自然灾害等方面具有良好的“弹性”,下雨时吸水、蓄水、渗水、净水,需要时将蓄存的水释放并加以利用。在海绵城市建设过程中,应统筹自然降水、地表水和地下水的***性,协调给水、排水等水循环利用各环节,并考虑其复杂性和长期性。众所周知,现有的城镇街道路面大都采用水泥混凝土、柏油、石材、陶瓷砖等不透水的材质铺设而成,这种硬化路面已经不适应建设海绵城市路面的趋势。
透水砖具有良好的透水性及保湿性能,能很好地缓解城市由于硬化路面所带来的“城市荒漠化”及“热岛效应”问题,有利于保持城市水平衡;自然降水能够迅速被透水砖吸收,并透过地表渗入地下,适时补充地下水位;透水砖能消除或减少地面积水,在产生防洪效益的同时,众多城市污染物不通过流水迁移而造成更大面积的环境污染;降雨结束后,透水砖中的水分又逐渐释放到空气中,调节地表温度和湿度,减轻城市“热岛效应”,维护地表生态平衡;同时透水砖具有吸音和防滑功能,可改善行走的安全性与舒适性,吸收车辆行驶所产生的噪音,创造安静舒适的交通环境。透水地砖可广泛用于住宅、庭院、公园、广场、人行道及轻量交通公路等路面的铺设,能产生良好的社会、环境和生态效应。
长期以来,污水厂的污泥处理一直是一个环保问题。污泥填埋不能从根本上解决污泥对环境的污染问题,而污泥的再生回收利用的成本很高,因此污泥的资源化利用被认为是最经济合理的处置方式。污水厂污泥除含有少量的有机成分外,大部分二氧化硅、三氧化二铝、氧化铁等无机成分跟粘土成分相似,粘结性较好,因而可以制作砖、水泥熟料、陶粒等建筑材料的原料。长期以来,粘土砖一直作为建筑行业用量最大最重要的墙体材料,每年不仅会毁坏大量土地农田,而且破坏了生态环境,所以将此制成建筑原料,是一种经济合理的处理方法。
发明内容
本发明目的就是为了弥补已有技术的缺陷,提供一种城市路面用耐沾污陶瓷透水地砖。
本发明是通过以下技术方案实现的:
一种城市路面用耐沾污陶瓷透水地砖,由下列重量份的原料制备制成:污水厂污泥40-43、稻壳6-7、钾长石粉4-5、粉煤灰10-12、水玻璃10-12、伟晶石18-20、石英砂6-7、氮化硅8-9、二氧化钛3-4、氧化锆5-6、磷酸二氢铝4-5、预胶化淀粉2-3。
所述一种城市路面用耐沾污陶瓷透水地砖,由以下具体步骤制成:
(1)将污水厂污泥自然干燥,粉碎处理过200目筛,得到污泥粉待用;将一半量的污泥粉、稻壳、钾长石粉混合,加入适量的水,放入搅拌机中以120转/分的速度搅拌成泥料,控制含水量为20%,然后送入造粒机中挤出造粒得到污泥颗粒,控制颗粒粒度为10目;
(2)将污泥颗粒放入干燥箱中,以100℃的温度干燥后送入电阻炉中进行烧结,升温至800℃,保温60分钟,然后继续升温至1100℃,保温60分钟,得到多孔污泥颗粒;
(3)将伟晶石碎石破碎,选取3mm左右的小颗粒,与石英砂混合,共同放入水中浸泡30分钟,过滤后取出得到混合粗骨料;将二氧化钛、氮化硅、氧化锆混合,送入造粒机中,加入磷酸二氢铝,搅拌15分钟后造粒,将得到的颗粒粉碎,过200目筛,与余量的污泥粉混合,得到混合细骨料;
(4)将上述混合粗骨料、混合细骨料、预胶化淀粉以及其余剩余成分混合,加入适量的水拌合均匀,控制含水量15%,使得混合细骨料均匀地包裹在混合粗骨料表面,形成坯料,然后将坯料放入干压成型机干压成型,控制压力为30MPa,再将制好的坯体置于恒温干燥箱中在105℃的温度下干燥8小时,最后送入电阻炉中烧结(首先迅速升温至500℃,然后以4℃/min的速度升温至600℃,再继续升温至1150℃,总烧成时间控制为300分钟),冷却后取出即得。
本发明的优点是:本发明采用污水厂污泥作为主要成分,能够解决污泥难以处理的问题,达到节能环保的要求;本发明在处理污水厂污泥时,采用二次烧结工艺,首先对一半量的污泥进行烧结,再将另一半以细粉的形态分别添加到砖坯的制备中,通过再次烧结,可以形成层层通孔的结构,有利于提高砖体的孔隙率,从而可以提高透水率。
本发明添加伟晶石、二氧化钛、二氧化锆等成分通过一系列的工艺烧结而成,提高了产品的致密性以及多孔隙性,具有强度高、表面光洁、抗污能力强,透水性好,适合公园、运动场、城市道路使用。
具体实施方式
一种城市路面用耐沾污陶瓷透水地砖,由下列重量份(公斤)的原料制备制成:污水厂污泥40、稻壳6、钾长石粉4、粉煤灰10、水玻璃10、伟晶石18、石英砂6、氮化硅8、二氧化钛3、氧化锆5、磷酸二氢铝4、预胶化淀粉2。
所述一种城市路面用耐沾污陶瓷透水地砖,由以下具体步骤制成:
(1)将污水厂污泥自然干燥,粉碎处理过200目筛,得到污泥粉待用;将一半量的污泥粉、稻壳、钾长石粉混合,加入适量的水,放入搅拌机中以120转/分的速度搅拌成泥料,控制含水量为20%,然后送入造粒机中挤出造粒得到污泥颗粒,控制颗粒粒度为10目;
(2)将污泥颗粒放入干燥箱中,以100℃的温度干燥后送入电阻炉中进行烧结,升温至800℃,保温60分钟,然后继续升温至1100℃,保温60分钟,得到多孔污泥颗粒;
(3)将伟晶石碎石破碎,选取3mm左右的小颗粒,与石英砂混合,共同放入水中浸泡30分钟,过滤后取出得到混合粗骨料;将二氧化钛、氮化硅、氧化锆混合,送入造粒机中,加入磷酸二氢铝,搅拌15分钟后造粒,将得到的颗粒粉碎,过200目筛,与余量的污泥粉混合,得到混合细骨料;
(4)将上述混合粗骨料、混合细骨料、预胶化淀粉以及其余剩余成分混合,加入适量的水拌合均匀,控制含水量15%,使得混合细骨料均匀地包裹在混合粗骨料表面,形成坯料,然后将坯料放入干压成型机干压成型,控制压力为30MPa,再将制好的坯体置于恒温干燥箱中在105℃的温度下干燥8小时,最后送入电阻炉中烧结(首先迅速升温至500℃,然后以4℃/min的速度升温至600℃,再继续升温至1150℃,总烧成时间控制为300分钟),冷却后取出即得。
对本发明实施例制成的透水地砖进行各项性能测试,保水性大于0.6g/cm2,透水系数为2.39×10-2cm/s,抗弯强度为48.1MPa,25次冻融循环抗压强度损失小于20%,符合行业标准。

Claims (2)

1.一种城市路面用耐沾污陶瓷透水地砖,其特征在于,由下列重量份的原料制备制成:污水厂污泥40-43、稻壳6-7、钾长石粉4-5、粉煤灰10-12、水玻璃10-12、伟晶石18-20、石英砂6-7、氮化硅8-9、二氧化钛3-4、氧化锆5-6、磷酸二氢铝4-5、预胶化淀粉2-3。
2.根据权利要求1所述一种城市路面用耐沾污陶瓷透水地砖,其特征在于,由以下具体步骤制成:
(1)将污水厂污泥自然干燥,粉碎处理过200目筛,得到污泥粉待用;将一半量的污泥粉、稻壳、钾长石粉混合,加入适量的水,放入搅拌机中以120转/分的速度搅拌成泥料,控制含水量为20%,然后送入造粒机中挤出造粒得到污泥颗粒,控制颗粒粒度为10目;
(2)将污泥颗粒放入干燥箱中,以100℃的温度干燥后送入电阻炉中进行烧结,升温至800℃,保温60分钟,然后继续升温至1100℃,保温60分钟,得到多孔污泥颗粒;
(3)将伟晶石碎石破碎,选取3mm左右的小颗粒,与石英砂混合,共同放入水中浸泡30分钟,过滤后取出得到混合粗骨料;将二氧化钛、氮化硅、氧化锆混合,送入造粒机中,加入磷酸二氢铝,搅拌15分钟后造粒,将得到的颗粒粉碎,过200目筛,与余量的污泥粉混合,得到混合细骨料;
(4)将上述混合粗骨料、混合细骨料、预胶化淀粉以及其余剩余成分混合,加入适量的水拌合均匀,控制含水量15%,使得混合细骨料均匀地包裹在混合粗骨料表面,形成坯料,然后将坯料放入干压成型机干压成型,控制压力为30MPa,再将制好的坯体置于恒温干燥箱中在105℃的温度下干燥8小时,最后送入电阻炉中烧结(首先迅速升温至500℃,然后以4℃/min的速度升温至600℃,再继续升温至1150℃,总烧成时间控制为300分钟),冷却后取出即得。
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CN105948784A (zh) * 2016-05-04 2016-09-21 山东理工大学 一种轻质多孔磷酸铝—二氧化钛陶瓷球的制备方法
CN106242623A (zh) * 2016-07-27 2016-12-21 北京大学 以钾长石尾矿为主料制备的烧结透水砖及其制备方法
CN107098670A (zh) * 2017-06-03 2017-08-29 合肥慧林建材有限公司 一种陶瓷透水路面砖及其制备方法
CN107935551A (zh) * 2017-12-12 2018-04-20 佛山早稻田环保节能科技有限公司 一种环保地砖
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CN105948784B (zh) * 2016-05-04 2018-06-01 山东理工大学 一种轻质多孔磷酸铝—二氧化钛陶瓷球的制备方法
CN109689592A (zh) * 2016-06-30 2019-04-26 凯得力法国公司 干颗粒耐火组合物用烧结剂
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CN106242623A (zh) * 2016-07-27 2016-12-21 北京大学 以钾长石尾矿为主料制备的烧结透水砖及其制备方法
CN106242623B (zh) * 2016-07-27 2018-12-18 北京大学 以钾长石尾矿为主料制备的烧结透水砖及其制备方法
CN107098670A (zh) * 2017-06-03 2017-08-29 合肥慧林建材有限公司 一种陶瓷透水路面砖及其制备方法
CN107935551A (zh) * 2017-12-12 2018-04-20 佛山早稻田环保节能科技有限公司 一种环保地砖

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