Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing foam concrete brick by using electrolytic manganese dioxide waste residue
The invention belongs to the technical field of resource recycling and building materials, and provides a method for preparing a foam concrete brick by using electrolytic manganese dioxide waste residues, which comprises the following steps: soaking the waste residues, and carrying out filter pressing to obtain washed manganese residues; adding the washed manganese slag into a neutralizing tank for neutralization reaction; carrying out filter pressing to obtain manganese slag subjected to impurity removal; drying the manganese slag, calcining part of the dried manganese slag, then putting the calcined manganese slag into a ball mill, adding quick lime and an aluminate coupling agent, and carrying out ball milling to obtain activated manganese slag; adding the dried manganese slag, Portland cement and polypropylene fiber into the activated manganese slag, adding water, and stirring to form concrete slurry; preparing foams from the foaming agent solution by using a compressed air foam maker, and mixing the foams into the concrete slurry to obtain a foam concrete mixture; and forming and curing to obtain the foam concrete brick. The waste manganese slag is recycled, one part of the waste manganese slag is modified into an active component, and the other part of the waste manganese slag is unmodified as an admixture, so that the doping ratio of the manganese slag is increased, the manganese slag can be digested on a large scale, and the foam concrete brick with high strength, light weight and low water absorption is obtained.
本发明属于资源循环再生利用及建筑材料技术领域，提供一种利用电解二氧化锰废渣制备泡沫混凝土砖的方法，将废渣浸泡、压滤得水洗锰渣；水洗锰渣加入中和槽中和反应；压滤得除杂后的锰渣；干燥锰渣，将部分干燥锰渣煅烧，然后放入球磨机，加入生石灰、铝酸酯偶联剂球磨得活化的锰渣；向活化的锰渣中加入干燥锰渣、硅酸盐水泥、聚丙烯纤维，加水搅拌成混凝土浆体；利用压缩空气发泡器将发泡剂溶液制作成泡沫并混入混凝土浆体中，得到泡沫混凝土拌合物；成形养护得泡沫混凝土砖。本发明回收利用废弃锰渣，一部分经过改性成为活性成分，另一部分未改性作为掺料，提高锰渣的掺入比率，能大规模消化锰渣，获得强度高、质量轻和吸水率低的泡沫混凝土砖。
Method for preparing foam concrete brick by using electrolytic manganese dioxide waste residue
The invention belongs to the technical field of resource recycling and building materials, and provides a method for preparing a foam concrete brick by using electrolytic manganese dioxide waste residues, which comprises the following steps: soaking the waste residues, and carrying out filter pressing to obtain washed manganese residues; adding the washed manganese slag into a neutralizing tank for neutralization reaction; carrying out filter pressing to obtain manganese slag subjected to impurity removal; drying the manganese slag, calcining part of the dried manganese slag, then putting the calcined manganese slag into a ball mill, adding quick lime and an aluminate coupling agent, and carrying out ball milling to obtain activated manganese slag; adding the dried manganese slag, Portland cement and polypropylene fiber into the activated manganese slag, adding water, and stirring to form concrete slurry; preparing foams from the foaming agent solution by using a compressed air foam maker, and mixing the foams into the concrete slurry to obtain a foam concrete mixture; and forming and curing to obtain the foam concrete brick. The waste manganese slag is recycled, one part of the waste manganese slag is modified into an active component, and the other part of the waste manganese slag is unmodified as an admixture, so that the doping ratio of the manganese slag is increased, the manganese slag can be digested on a large scale, and the foam concrete brick with high strength, light weight and low water absorption is obtained.
本发明属于资源循环再生利用及建筑材料技术领域，提供一种利用电解二氧化锰废渣制备泡沫混凝土砖的方法，将废渣浸泡、压滤得水洗锰渣；水洗锰渣加入中和槽中和反应；压滤得除杂后的锰渣；干燥锰渣，将部分干燥锰渣煅烧，然后放入球磨机，加入生石灰、铝酸酯偶联剂球磨得活化的锰渣；向活化的锰渣中加入干燥锰渣、硅酸盐水泥、聚丙烯纤维，加水搅拌成混凝土浆体；利用压缩空气发泡器将发泡剂溶液制作成泡沫并混入混凝土浆体中，得到泡沫混凝土拌合物；成形养护得泡沫混凝土砖。本发明回收利用废弃锰渣，一部分经过改性成为活性成分，另一部分未改性作为掺料，提高锰渣的掺入比率，能大规模消化锰渣，获得强度高、质量轻和吸水率低的泡沫混凝土砖。
Method for preparing foam concrete brick by using electrolytic manganese dioxide waste residue
一种利用电解二氧化锰废渣制备泡沫混凝土砖的方法
CHEN QIZHI (Autor:in) / WEI GUOZHU (Autor:in) / FANG HAO (Autor:in) / JIA XUXI (Autor:in) / WANG SHAOLI (Autor:in) / FAN XIANG (Autor:in) / SHI LEI (Autor:in) / LU BIN (Autor:in) / LI JIAN (Autor:in)
12.04.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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