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A platform for research: civil engineering, architecture and urbanism
Method for preparing cordierite ceramic from secondary aluminum ash
The invention provides a method for preparing cordierite ceramic from secondary aluminum ash, which comprises the following steps: mixing the secondary aluminum ash with a mineralizing agent, and roasting to obtain a mineralized material; mixing the mineralized material with an acid solution for acidolysis; mixing and ball-milling the obtained acidolysis residues with a silicon source and/or a magnesium source to obtain a mixture; and carrying out dry compression molding on the mixture, and sintering to obtain the cordierite ceramic. According to the method, impurity components such as F and Cl in the secondary aluminum ash are converted into fluorine chlorine salt to enter the solution through the mineralization roasting-acidolysis regulation and control synergistic effect, directional separation and deep removal of the impurity components in the secondary aluminum ash are achieved, gradient utilization of impurity elements F and Cl can be achieved, and calcium fluoride and chlorate fluxing agents can be co-produced; the secondary aluminum ash is subjected to resource utilization to prepare the cordierite ceramic, and the obtained ceramic material is high in main phase content, large in volume density, low in apparent porosity and low in thermal expansion coefficient and has good economic, social and environmental benefits.
本发明提供了一种二次铝灰制备堇青石陶瓷的方法，所述方法包括：将二次铝灰与矿化剂混合进行焙烧，得到矿化料；将矿化料与酸液混合进行酸解；将所得酸解渣与硅源和/或镁源混合球磨，得到混合料；将混合料干法压制成型，再进行烧结，得到堇青石陶瓷。本发明提供的方法通过矿化焙烧‑酸解调控协同作用将二次铝灰中的F、Cl等杂质组分转化为氟氯盐进入溶液中，实现二次铝灰中杂质组分的定向分离和深度脱除，并能实现杂质元素F、Cl的梯级利用，可联产氟化钙和氯化盐助熔剂；将二次铝灰进行资源化利用制备堇青石陶瓷，所得陶瓷材料主相含量高、体积密度大、显气孔率低和热膨胀系数低，具有良好的经济、社会和环境效益。
Method for preparing cordierite ceramic from secondary aluminum ash
The invention provides a method for preparing cordierite ceramic from secondary aluminum ash, which comprises the following steps: mixing the secondary aluminum ash with a mineralizing agent, and roasting to obtain a mineralized material; mixing the mineralized material with an acid solution for acidolysis; mixing and ball-milling the obtained acidolysis residues with a silicon source and/or a magnesium source to obtain a mixture; and carrying out dry compression molding on the mixture, and sintering to obtain the cordierite ceramic. According to the method, impurity components such as F and Cl in the secondary aluminum ash are converted into fluorine chlorine salt to enter the solution through the mineralization roasting-acidolysis regulation and control synergistic effect, directional separation and deep removal of the impurity components in the secondary aluminum ash are achieved, gradient utilization of impurity elements F and Cl can be achieved, and calcium fluoride and chlorate fluxing agents can be co-produced; the secondary aluminum ash is subjected to resource utilization to prepare the cordierite ceramic, and the obtained ceramic material is high in main phase content, large in volume density, low in apparent porosity and low in thermal expansion coefficient and has good economic, social and environmental benefits.
本发明提供了一种二次铝灰制备堇青石陶瓷的方法，所述方法包括：将二次铝灰与矿化剂混合进行焙烧，得到矿化料；将矿化料与酸液混合进行酸解；将所得酸解渣与硅源和/或镁源混合球磨，得到混合料；将混合料干法压制成型，再进行烧结，得到堇青石陶瓷。本发明提供的方法通过矿化焙烧‑酸解调控协同作用将二次铝灰中的F、Cl等杂质组分转化为氟氯盐进入溶液中，实现二次铝灰中杂质组分的定向分离和深度脱除，并能实现杂质元素F、Cl的梯级利用，可联产氟化钙和氯化盐助熔剂；将二次铝灰进行资源化利用制备堇青石陶瓷，所得陶瓷材料主相含量高、体积密度大、显气孔率低和热膨胀系数低，具有良好的经济、社会和环境效益。
Method for preparing cordierite ceramic from secondary aluminum ash
一种二次铝灰制备堇青石陶瓷的方法
LI SHAOPENG (author) / ZUO ZHENGPING (author) / LI HUIQUAN (author) / ZHANG JIANBO (author) / WU WENFEN (author) / LI ZHANBING (author)
2024-03-29
Patent
Electronic Resource
Chinese
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
/
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
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