Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing cement from waste aluminum slag
The invention relates to the technical field of constructional engineering, in particular to a method for preparing cement from waste aluminum slag. The invention relates to a method for preparing cement from waste aluminum slag. The method comprises the following steps: calcification-carbonization treatment of the waste aluminum slag, washing of the waste aluminum slag, pre-homogenization and preparation of a raw material, preparation of clinker and preparation of a cement finished product. In the treatment process of the waste aluminum slag, a calcification-carbonization method is used for treating the waste aluminum slag, the main components of the treated waste aluminum slag are calcium carbonate, silicate, ferric oxide and a small amount of aluminum iron garnet, the components of oxide can be changed during calcination, calcium carbonate is completely decomposed under calcination at the temperature of 900 DEG C, and the calcium carbonate is completely decomposed after calcination at the temperature of 900 DEG C; a large amount of dicalcium silicate is generated at the temperature of 1200 DEG C, a large amount of AH3 gel can be formed during hydration of dicalcium silicate, the cement is filled with C-S-H, the strength of the cement can be enhanced, in addition, no extra waste is basically discharged in the preparation process of the calcified-carbonized waste aluminum slag, and the utilization rate of the waste aluminum slag is increased.
本发明涉及建筑工程技术领域，具体涉及一种利用废铝渣制备水泥的方法。一种利用废铝渣制备水泥的方法，包括以下步骤：钙化‑碳化处理废铝渣、废铝渣洗涤、生料的预均匀化及制备、制备熟料和水泥成品制备。本发明在对废铝渣的处理过程中，使用了钙化‑碳化法处理废铝渣，处理后废铝渣的主要成分是碳酸钙、硅酸盐、三氧化二铁及少量的铝铁石榴石，其中氧化物的成分在煅烧时会改变，在900℃下煅烧下碳酸钙完全分解，在1200℃时开始有大量硅酸二钙生成，硅酸二钙的水化时会形成大量的AH3凝胶与C‑S‑H填充在水泥中可以加强了它的强度，此外，经过钙化‑碳化的废铝渣在制备过程中基本无额外废料的排出，增加了对废铝渣的利用率。
Method for preparing cement from waste aluminum slag
The invention relates to the technical field of constructional engineering, in particular to a method for preparing cement from waste aluminum slag. The invention relates to a method for preparing cement from waste aluminum slag. The method comprises the following steps: calcification-carbonization treatment of the waste aluminum slag, washing of the waste aluminum slag, pre-homogenization and preparation of a raw material, preparation of clinker and preparation of a cement finished product. In the treatment process of the waste aluminum slag, a calcification-carbonization method is used for treating the waste aluminum slag, the main components of the treated waste aluminum slag are calcium carbonate, silicate, ferric oxide and a small amount of aluminum iron garnet, the components of oxide can be changed during calcination, calcium carbonate is completely decomposed under calcination at the temperature of 900 DEG C, and the calcium carbonate is completely decomposed after calcination at the temperature of 900 DEG C; a large amount of dicalcium silicate is generated at the temperature of 1200 DEG C, a large amount of AH3 gel can be formed during hydration of dicalcium silicate, the cement is filled with C-S-H, the strength of the cement can be enhanced, in addition, no extra waste is basically discharged in the preparation process of the calcified-carbonized waste aluminum slag, and the utilization rate of the waste aluminum slag is increased.
本发明涉及建筑工程技术领域，具体涉及一种利用废铝渣制备水泥的方法。一种利用废铝渣制备水泥的方法，包括以下步骤：钙化‑碳化处理废铝渣、废铝渣洗涤、生料的预均匀化及制备、制备熟料和水泥成品制备。本发明在对废铝渣的处理过程中，使用了钙化‑碳化法处理废铝渣，处理后废铝渣的主要成分是碳酸钙、硅酸盐、三氧化二铁及少量的铝铁石榴石，其中氧化物的成分在煅烧时会改变，在900℃下煅烧下碳酸钙完全分解，在1200℃时开始有大量硅酸二钙生成，硅酸二钙的水化时会形成大量的AH3凝胶与C‑S‑H填充在水泥中可以加强了它的强度，此外，经过钙化‑碳化的废铝渣在制备过程中基本无额外废料的排出，增加了对废铝渣的利用率。
Method for preparing cement from waste aluminum slag
一种利用废铝渣制备水泥的方法
SHI XIAOFEI (Autor:in)
05.05.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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