Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing sulphoaluminate cement from sintering process red mud and secondary aluminum ash
The invention particularly relates to a method for preparing sulphoaluminate cement from sintering process red mud and secondary aluminum ash, and belongs to the technical field of special cement, the method comprises the following steps: carrying out low-temperature rapid slurrying desalination pretreatment on the secondary aluminum ash, adding sintering process red mud, limestone, kaolin and desulfurized gypsum into the pretreated secondary aluminum ash according to a ratio, and carrying out dry pressing to obtain the sulphoaluminate cement. And calcining to obtain sulphoaluminate cement clinker, and adding desulfurized gypsum to obtain the sulphoaluminate cement. The sintered red mud is used for providing calcium oxide, silicon oxide and aluminum oxide, the desalted secondary aluminum ash is used for replacing bauxite to provide an aluminum source, and raw materials such as the desulfurized gypsum are used in cooperation, so that the sulphoaluminate cement with qualified quality can be fired at low cost, and recycling of industrial solid waste can be promoted.
本发明特别涉及一种利用烧结法赤泥、二次铝灰制备硫铝酸盐水泥的方法，属于特种水泥技术领域，方法包括：将二次铝灰进行低温快速浆化脱盐预处理，预处理后的二次铝灰按比例加入烧结法赤泥、石灰石、高岭土、脱硫石膏干压，经煅烧后得到硫铝酸盐水泥熟料，再配入脱硫石膏即得硫铝酸盐水泥。发明利用烧结法赤泥提供氧化钙，氧化硅及氧化铝，脱盐后的二次铝灰代替铝矾土提供铝源，协同脱硫石膏等原料，不仅能低成本烧制质量合格的硫铝酸盐水泥，还能促进工业固废资源化。
Method for preparing sulphoaluminate cement from sintering process red mud and secondary aluminum ash
The invention particularly relates to a method for preparing sulphoaluminate cement from sintering process red mud and secondary aluminum ash, and belongs to the technical field of special cement, the method comprises the following steps: carrying out low-temperature rapid slurrying desalination pretreatment on the secondary aluminum ash, adding sintering process red mud, limestone, kaolin and desulfurized gypsum into the pretreated secondary aluminum ash according to a ratio, and carrying out dry pressing to obtain the sulphoaluminate cement. And calcining to obtain sulphoaluminate cement clinker, and adding desulfurized gypsum to obtain the sulphoaluminate cement. The sintered red mud is used for providing calcium oxide, silicon oxide and aluminum oxide, the desalted secondary aluminum ash is used for replacing bauxite to provide an aluminum source, and raw materials such as the desulfurized gypsum are used in cooperation, so that the sulphoaluminate cement with qualified quality can be fired at low cost, and recycling of industrial solid waste can be promoted.
本发明特别涉及一种利用烧结法赤泥、二次铝灰制备硫铝酸盐水泥的方法，属于特种水泥技术领域，方法包括：将二次铝灰进行低温快速浆化脱盐预处理，预处理后的二次铝灰按比例加入烧结法赤泥、石灰石、高岭土、脱硫石膏干压，经煅烧后得到硫铝酸盐水泥熟料，再配入脱硫石膏即得硫铝酸盐水泥。发明利用烧结法赤泥提供氧化钙，氧化硅及氧化铝，脱盐后的二次铝灰代替铝矾土提供铝源，协同脱硫石膏等原料，不仅能低成本烧制质量合格的硫铝酸盐水泥，还能促进工业固废资源化。
Method for preparing sulphoaluminate cement from sintering process red mud and secondary aluminum ash
一种利用烧结法赤泥、二次铝灰制备硫铝酸盐水泥的方法
WANG XINCHENG (Autor:in) / SUN FENGJUAN (Autor:in) / ZHANG LEIPENG (Autor:in) / ZHANG MINZE (Autor:in) / WANG CHAOHONG (Autor:in)
19.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
C01D
Verbindungen der Alkalimetalle, d.h. des Lithiums, Natriums, Kaliums, Rubidiums, Cäsiums oder Franciums
,
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
/
C22B
PRODUCTION OR REFINING OF METALS
,
Gewinnen oder Feinen von Metallen
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