Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing autoclaved aerated concrete through mechanochemical coupling treatment of copper tailings
The invention relates to the field of concrete production, in particular to a method for preparing autoclaved aerated concrete through mechanochemical coupling treatment of copper tailings, which comprises the following steps: (1) uniformly stirring cement, quicklime, river sand and modified copper tailing powder subjected to mechanochemical coupling treatment to obtain a copper tailing dry admixture; (2) uniformly stirring gypsum and warm water, and adding the copper tailing dry admixture to obtain a copper tailing mixture; (3) adding a foam stabilizer, a foaming agent, an exciting agent and fumed silica into the copper tailing mixture, and uniformly stirring to obtain a prefabricated material; and (4) pouring the prefabricated material into a mold, and then carrying out curing and autoclaved reaction to prepare the autoclaved aerated concrete. According to the method, the copper tailings are subjected to ball milling, alkali liquor treatment and microwave treatment, bound water in the copper tailings is removed, silica tetrahedrons and alumina trihedrons form an unstable glass phase structure, dissolution of silicon and aluminum in follow-up treatment is facilitated, the activity of the copper tailings is improved, and the quality of steam pressurized concrete is improved.
本发明涉及混凝土生产领域，具体涉及一种机械化学耦合处理铜尾矿制备蒸压加气混凝土的方法，包括以下步骤：(1)将水泥、生石灰、河砂和经机械化学耦合处理后的改性铜尾矿粉搅拌均匀，得到铜尾矿干掺料；(2)将石膏和温水拌匀后加入铜尾矿干掺料，得到铜尾矿混合料；(3)向铜尾矿混合料中加入稳泡剂、发气剂、激发剂和气相二氧化硅，搅拌均匀后得到预制料；(4)将预制料倒入模具中，随后进行养护和蒸压反应，制得蒸压加气混凝土。本发明采用球磨‑碱液‑微波处理铜尾矿，脱出其内的结合水，使得硅氧四面体和铝氧三面体形成不稳定的玻璃相结构，有利于后续处理中硅、铝的溶出，提高铜尾矿的活性，改善了蒸汽加压混凝土的质量。
Method for preparing autoclaved aerated concrete through mechanochemical coupling treatment of copper tailings
The invention relates to the field of concrete production, in particular to a method for preparing autoclaved aerated concrete through mechanochemical coupling treatment of copper tailings, which comprises the following steps: (1) uniformly stirring cement, quicklime, river sand and modified copper tailing powder subjected to mechanochemical coupling treatment to obtain a copper tailing dry admixture; (2) uniformly stirring gypsum and warm water, and adding the copper tailing dry admixture to obtain a copper tailing mixture; (3) adding a foam stabilizer, a foaming agent, an exciting agent and fumed silica into the copper tailing mixture, and uniformly stirring to obtain a prefabricated material; and (4) pouring the prefabricated material into a mold, and then carrying out curing and autoclaved reaction to prepare the autoclaved aerated concrete. According to the method, the copper tailings are subjected to ball milling, alkali liquor treatment and microwave treatment, bound water in the copper tailings is removed, silica tetrahedrons and alumina trihedrons form an unstable glass phase structure, dissolution of silicon and aluminum in follow-up treatment is facilitated, the activity of the copper tailings is improved, and the quality of steam pressurized concrete is improved.
本发明涉及混凝土生产领域，具体涉及一种机械化学耦合处理铜尾矿制备蒸压加气混凝土的方法，包括以下步骤：(1)将水泥、生石灰、河砂和经机械化学耦合处理后的改性铜尾矿粉搅拌均匀，得到铜尾矿干掺料；(2)将石膏和温水拌匀后加入铜尾矿干掺料，得到铜尾矿混合料；(3)向铜尾矿混合料中加入稳泡剂、发气剂、激发剂和气相二氧化硅，搅拌均匀后得到预制料；(4)将预制料倒入模具中，随后进行养护和蒸压反应，制得蒸压加气混凝土。本发明采用球磨‑碱液‑微波处理铜尾矿，脱出其内的结合水，使得硅氧四面体和铝氧三面体形成不稳定的玻璃相结构，有利于后续处理中硅、铝的溶出，提高铜尾矿的活性，改善了蒸汽加压混凝土的质量。
Method for preparing autoclaved aerated concrete through mechanochemical coupling treatment of copper tailings
一种机械化学耦合处理铜尾矿制备蒸压加气混凝土的方法
XU RONGSHENG (Autor:in) / KONG FANHUI (Autor:in) / HONG TONG (Autor:in) / WANG HAORAN (Autor:in)
16.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2021
Preparation of autoclaved aerated concrete using copper tailings and blast furnace slag
| Online Contents | 2012
Preparation of autoclaved aerated concrete using copper tailings and blast furnace slag
| British Library Online Contents | 2012