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A platform for research: civil engineering, architecture and urbanism
The invention provides a method for preparing porous mullite aggregate by using secondary aluminum ash, and particularly relates to the technical field of secondary aluminum ash treatment. The method comprises the steps of adding the secondary aluminum ash into water to prepare a mixed solution, filtering the mixed solution, and washing and drying filter residues to obtain secondary aluminum ash pretreatment powder, uniformly mixing the secondary aluminum ash pretreatment powder, carbonized rice husks and SiO2 micro powder, and adding water to prepare pug, adding foam prepared from a foaming agent into the pug, and stirring to obtain foam slurry, then uniformly mixing the secondary aluminum ash pretreatment powder and SiO2 micro powder, and adding the foam slurry to prepare porous prefabricated particles, and finally, drying the porous prefabricated particles, and performing heat treatment in an air atmosphere to obtain the porous mullite aggregate. The secondary aluminum ash utilization rate is high, the production cost is low, the production process is simple, and the prepared porous mullite aggregate is small in volume density and high in cylinder compressive strength.
本发明提供一种利用二次铝灰制备多孔莫来石骨料的方法，具体涉及二次铝灰处理技术领域，先将二次铝灰加入水中制得混合液；混合液过滤，并将滤渣洗涤、干燥，得到二次铝灰预处理粉；再将二次铝灰预处理粉、碳化稻壳和SiO2微粉混合均匀，加入水，制得泥料；然后向泥料中加入发泡剂所制成的泡沫，搅拌得到泡沫料浆；然后将二次铝灰预处理粉和SiO2微粉混合均匀，加入泡沫料浆，制得多孔预制粒；最后将所述多孔预制粒干燥，然后在空气气氛下，进行热处理后制备得到多孔莫来石骨料；本发明二次铝灰利用率高、生产成本低和生产工艺简单，所制备的多孔莫来石骨料体积密度小、筒压强度高。
The invention provides a method for preparing porous mullite aggregate by using secondary aluminum ash, and particularly relates to the technical field of secondary aluminum ash treatment. The method comprises the steps of adding the secondary aluminum ash into water to prepare a mixed solution, filtering the mixed solution, and washing and drying filter residues to obtain secondary aluminum ash pretreatment powder, uniformly mixing the secondary aluminum ash pretreatment powder, carbonized rice husks and SiO2 micro powder, and adding water to prepare pug, adding foam prepared from a foaming agent into the pug, and stirring to obtain foam slurry, then uniformly mixing the secondary aluminum ash pretreatment powder and SiO2 micro powder, and adding the foam slurry to prepare porous prefabricated particles, and finally, drying the porous prefabricated particles, and performing heat treatment in an air atmosphere to obtain the porous mullite aggregate. The secondary aluminum ash utilization rate is high, the production cost is low, the production process is simple, and the prepared porous mullite aggregate is small in volume density and high in cylinder compressive strength.
本发明提供一种利用二次铝灰制备多孔莫来石骨料的方法，具体涉及二次铝灰处理技术领域，先将二次铝灰加入水中制得混合液；混合液过滤，并将滤渣洗涤、干燥，得到二次铝灰预处理粉；再将二次铝灰预处理粉、碳化稻壳和SiO2微粉混合均匀，加入水，制得泥料；然后向泥料中加入发泡剂所制成的泡沫，搅拌得到泡沫料浆；然后将二次铝灰预处理粉和SiO2微粉混合均匀，加入泡沫料浆，制得多孔预制粒；最后将所述多孔预制粒干燥，然后在空气气氛下，进行热处理后制备得到多孔莫来石骨料；本发明二次铝灰利用率高、生产成本低和生产工艺简单，所制备的多孔莫来石骨料体积密度小、筒压强度高。
Method for preparing porous mullite aggregate by using secondary aluminum ash
一种利用二次铝灰制备多孔莫来石骨料的方法
2021-08-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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