Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-strength ceramsite based on industrial solid waste and preparation method thereof
The invention discloses high-strength ceramsite based on industrial solid waste and a preparation method of the high-strength ceramsite, and belongs to the technical field of solid waste treatment.The high-strength ceramsite is prepared by mixing Bayer process red mud, molybdenum slag, bauxite, spodumene and polyaluminum with industrial starch, few raw materials are needed, the main materials are the industrial solid waste Bayer process red mud and the molybdenum slag, and the cost is low. The content of Fe2O3 in the red mud and the molybdenum slag is reduced through a reduction magnetic separation method, the strength is prevented from being reduced, the Si/Al ratio is increased through roasting activation and addition of clay powder, a uniform and compact composite geopolymer is obtained, expansion generated by raw material reaction is reduced, the strength of the ceramsite is improved, and the production cost is reduced. The bauxite, the red mud and the molybdenum slag form a mullite phase and a small amount of corundum phase at a high temperature, so that the ceramsite has high strength, spodumene is used as a fluxing agent, and mullite can be formed at a low temperature, so that the strength of a green body is improved, the sintering temperature is reduced, and the firing period is shortened.
本发明公开了一种基于工业固废的高强度陶粒及其制备方法，属于固废处理技术领域，本发明选用拜耳法赤泥、钼矿渣、铝矾土、锂辉石、聚合铝混合工业淀粉制成，需原料较少，并且主料为工业固废拜耳法赤泥和钼矿渣，易得且有益于固废的回收再利用，减少环境污染，通过还原磁选法，降低赤泥和钼矿渣中Fe2O3含量，避免强度降低，通过焙烧活化和加入粘土粉提高Si/Al比，得到均匀致密的复合地聚物，减小原料反应发生的膨胀，提高陶粒强度，铝矾土、赤泥、钼矿渣在高温下，形成莫来石相与少量刚玉相，使陶粒具有较高的强度，锂辉石既作助熔剂，又有助于在较低温度下就能形成莫来石以增加坯体强度，降低烧结温度和烧成周期。
High-strength ceramsite based on industrial solid waste and preparation method thereof
The invention discloses high-strength ceramsite based on industrial solid waste and a preparation method of the high-strength ceramsite, and belongs to the technical field of solid waste treatment.The high-strength ceramsite is prepared by mixing Bayer process red mud, molybdenum slag, bauxite, spodumene and polyaluminum with industrial starch, few raw materials are needed, the main materials are the industrial solid waste Bayer process red mud and the molybdenum slag, and the cost is low. The content of Fe2O3 in the red mud and the molybdenum slag is reduced through a reduction magnetic separation method, the strength is prevented from being reduced, the Si/Al ratio is increased through roasting activation and addition of clay powder, a uniform and compact composite geopolymer is obtained, expansion generated by raw material reaction is reduced, the strength of the ceramsite is improved, and the production cost is reduced. The bauxite, the red mud and the molybdenum slag form a mullite phase and a small amount of corundum phase at a high temperature, so that the ceramsite has high strength, spodumene is used as a fluxing agent, and mullite can be formed at a low temperature, so that the strength of a green body is improved, the sintering temperature is reduced, and the firing period is shortened.
本发明公开了一种基于工业固废的高强度陶粒及其制备方法，属于固废处理技术领域，本发明选用拜耳法赤泥、钼矿渣、铝矾土、锂辉石、聚合铝混合工业淀粉制成，需原料较少，并且主料为工业固废拜耳法赤泥和钼矿渣，易得且有益于固废的回收再利用，减少环境污染，通过还原磁选法，降低赤泥和钼矿渣中Fe2O3含量，避免强度降低，通过焙烧活化和加入粘土粉提高Si/Al比，得到均匀致密的复合地聚物，减小原料反应发生的膨胀，提高陶粒强度，铝矾土、赤泥、钼矿渣在高温下，形成莫来石相与少量刚玉相，使陶粒具有较高的强度，锂辉石既作助熔剂，又有助于在较低温度下就能形成莫来石以增加坯体强度，降低烧结温度和烧成周期。
High-strength ceramsite based on industrial solid waste and preparation method thereof
一种基于工业固废的高强度陶粒及其制备方法
ZHANG HEXIN (Autor:in) / ZHOU WEN (Autor:in) / MAO SHANGBIN (Autor:in) / LI MINGQUAN (Autor:in) / WANG JIXUE (Autor:in) / YANG JIANMING (Autor:in) / ZHOU YUYING (Autor:in) / TAN WEI (Autor:in)
01.09.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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