A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides a method for preparing a porous mullite brick from secondary aluminum ash, and particularly relates to the technical field of secondary aluminum ash treatment. The method comprises the following steps: adding the secondary aluminum ash into water and evenly mixing, and preparing a mixed solution; filtering the mixed solution to obtain filter residues, and washing and drying the filter residues to obtain secondary aluminum ash pretreatment powder; uniformly mixing the secondary aluminum ash pretreatment powder, clay clinker, alpha-Al2O3 and carbonized rice husk, adding water and sodium polyacrylate, and stirring to obtain a pug; then adding foam prepared from a foaming agent and a binding agent into the pug, and stirring to obtain foam slurry; carrying out casting molding on the foam slurry, drying, demolding, and then carrying out drying treatment; and finally, carrying out heat treatment in an air atmosphere to prepare the porous mullite brick. According to the invention, the utilization rate of the secondary aluminum ash is high, the production cost is low, the production process is simple and harmless to the environment, and the prepared porous mullite has relatively high compressive strength, relatively low volume density and small heat conductivity coefficient.
本发明提供一种利用二次铝灰制备多孔莫来石砖的方法，具体涉及二次铝灰处理技术领域，先将二次铝灰加入到水中，混合均匀，制得混合液；将所述混合液经过滤得到滤渣，并将滤渣洗涤、干燥，得到二次铝灰预处理粉；再将所述二次铝灰预处理粉、粘土熟料、α‑Al2O3和碳化稻壳混合均匀，再加入水、聚丙烯酸钠，搅拌制得泥料；然后向所述泥料中加入发泡剂所制成的泡沫和结合剂，搅拌得到泡沫料浆；将所述泡沫料浆浇注成型，并干燥、脱模后，再进行干燥处理；最后在空气气氛下，经热处理，制备得到多孔莫来石砖；本发明二次铝灰利用率高、生产成本低、生产工艺简单和对环境无害，所制备的多孔莫来石具有较高的耐压强度、较低的体积密度和小的导热系数。
The invention provides a method for preparing a porous mullite brick from secondary aluminum ash, and particularly relates to the technical field of secondary aluminum ash treatment. The method comprises the following steps: adding the secondary aluminum ash into water and evenly mixing, and preparing a mixed solution; filtering the mixed solution to obtain filter residues, and washing and drying the filter residues to obtain secondary aluminum ash pretreatment powder; uniformly mixing the secondary aluminum ash pretreatment powder, clay clinker, alpha-Al2O3 and carbonized rice husk, adding water and sodium polyacrylate, and stirring to obtain a pug; then adding foam prepared from a foaming agent and a binding agent into the pug, and stirring to obtain foam slurry; carrying out casting molding on the foam slurry, drying, demolding, and then carrying out drying treatment; and finally, carrying out heat treatment in an air atmosphere to prepare the porous mullite brick. According to the invention, the utilization rate of the secondary aluminum ash is high, the production cost is low, the production process is simple and harmless to the environment, and the prepared porous mullite has relatively high compressive strength, relatively low volume density and small heat conductivity coefficient.
本发明提供一种利用二次铝灰制备多孔莫来石砖的方法，具体涉及二次铝灰处理技术领域，先将二次铝灰加入到水中，混合均匀，制得混合液；将所述混合液经过滤得到滤渣，并将滤渣洗涤、干燥，得到二次铝灰预处理粉；再将所述二次铝灰预处理粉、粘土熟料、α‑Al2O3和碳化稻壳混合均匀，再加入水、聚丙烯酸钠，搅拌制得泥料；然后向所述泥料中加入发泡剂所制成的泡沫和结合剂，搅拌得到泡沫料浆；将所述泡沫料浆浇注成型，并干燥、脱模后，再进行干燥处理；最后在空气气氛下，经热处理，制备得到多孔莫来石砖；本发明二次铝灰利用率高、生产成本低、生产工艺简单和对环境无害，所制备的多孔莫来石具有较高的耐压强度、较低的体积密度和小的导热系数。
Method for preparing porous mullite brick from secondary aluminum ash
一种利用二次铝灰制备多孔莫来石砖的方法
2021-07-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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