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A platform for research: civil engineering, architecture and urbanism
Preparation method of household garbage incineration bottom ash unfired porous artificial aggregate
The invention discloses a preparation method of a household garbage incineration bottom ash unfired porous artificial aggregate. The artificial aggregate is prepared from household garbage incineration bottom ash powder and particles, a precursor and an alkali solution. The preparation method of the aggregate comprises the following steps: (1) performing magnetic separation to remove iron, and crushing and grinding the household garbage incineration bottom ash subjected to magnetic separation into powder and particles; (2) dissolving sodium hydroxide, sodium silicate and other alkalis in water to obtain an alkaline solution; (3) mixing the household garbage incineration bottom ash powder, the particles and the precursor, pouring 80% of an alkali solution, and stirring for 20 seconds; (4) pouring the mixture into a granulator for granulation, and spraying the residual aqueous alkali into the granulator in a spray form within 30 seconds until an aggregate blank is formed; and (5) wrapping the artificial aggregate blank with a plastic film, and maintaining for 1-3 days to obtain the unfired porous artificial aggregate finished product. The method is simple and easy to implement, low in cost and environmentally friendly, and a new idea for preparing the functional artificial aggregate is provided for the artificial gravel industry.
本发明公开了一种生活垃圾焚烧底灰免烧多孔人造骨料的制备方法。所述人造骨料由生活垃圾焚烧底灰粉末和颗粒、前驱体与碱溶液制成。骨料制备方法包括以下步骤：(1)磁选除铁，将磁选过后的生活垃圾焚烧底灰破碎研磨成粉末和颗粒；(2)将氢氧化钠和水玻璃等碱与水溶解得到碱溶液；(3)将生活垃圾焚烧底灰粉末和颗粒以及前驱体混合，倒入80％的碱溶液，搅拌20秒；(4)将混合物倒入造粒机造粒，并将剩余碱溶液以喷雾的形式在30秒内喷入造粒机中，直到骨料胚体成型；(5)将人造骨料胚体用塑料薄膜包裹，养护1‑3天，得到免烧多孔人造骨料成品。此方法简单易行，成本低廉，绿色环保，为人造砂石行业提供了一种制备功能型人造骨料的新思路。
Preparation method of household garbage incineration bottom ash unfired porous artificial aggregate
The invention discloses a preparation method of a household garbage incineration bottom ash unfired porous artificial aggregate. The artificial aggregate is prepared from household garbage incineration bottom ash powder and particles, a precursor and an alkali solution. The preparation method of the aggregate comprises the following steps: (1) performing magnetic separation to remove iron, and crushing and grinding the household garbage incineration bottom ash subjected to magnetic separation into powder and particles; (2) dissolving sodium hydroxide, sodium silicate and other alkalis in water to obtain an alkaline solution; (3) mixing the household garbage incineration bottom ash powder, the particles and the precursor, pouring 80% of an alkali solution, and stirring for 20 seconds; (4) pouring the mixture into a granulator for granulation, and spraying the residual aqueous alkali into the granulator in a spray form within 30 seconds until an aggregate blank is formed; and (5) wrapping the artificial aggregate blank with a plastic film, and maintaining for 1-3 days to obtain the unfired porous artificial aggregate finished product. The method is simple and easy to implement, low in cost and environmentally friendly, and a new idea for preparing the functional artificial aggregate is provided for the artificial gravel industry.
本发明公开了一种生活垃圾焚烧底灰免烧多孔人造骨料的制备方法。所述人造骨料由生活垃圾焚烧底灰粉末和颗粒、前驱体与碱溶液制成。骨料制备方法包括以下步骤：(1)磁选除铁，将磁选过后的生活垃圾焚烧底灰破碎研磨成粉末和颗粒；(2)将氢氧化钠和水玻璃等碱与水溶解得到碱溶液；(3)将生活垃圾焚烧底灰粉末和颗粒以及前驱体混合，倒入80％的碱溶液，搅拌20秒；(4)将混合物倒入造粒机造粒，并将剩余碱溶液以喷雾的形式在30秒内喷入造粒机中，直到骨料胚体成型；(5)将人造骨料胚体用塑料薄膜包裹，养护1‑3天，得到免烧多孔人造骨料成品。此方法简单易行，成本低廉，绿色环保，为人造砂石行业提供了一种制备功能型人造骨料的新思路。
Preparation method of household garbage incineration bottom ash unfired porous artificial aggregate
一种生活垃圾焚烧底灰免烧多孔人造骨料的制备方法
LIN ZHONGCAI (author) / REN PENGFEI (author)
2022-12-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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