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A platform for research: civil engineering, architecture and urbanism
Process method for preparing cryolite through aluminum ash recombination
The invention discloses a process method for preparing cryolite by recombining aluminum ash, which comprises the following steps: 1) adding a quantitative alkaline material into a fluorine-containing aluminum ash raw material, and roasting to obtain a roasted material; (2) the roasted material is subjected to water leaching, and water leaching liquid and water leaching residues are obtained; and 3) introducing CO2 gas into the water immersion liquid for reaction to obtain a cryolite product. According to the method, fluorides in the aluminum ash are effectively converted into high-value products in a centralized mode, high-value utilization of the hazardous waste is achieved, and the problem that the hazardous waste in the aluminum industry cannot be efficiently recycled is effectively solved. The whole process flow is free of pollution emission, is environment-friendly, and actively responds to the development of the resource-saving and environment-friendly society.
本发明公开了一种利用铝灰重组制备冰晶石的工艺方法，包括以下步骤：1)向含氟铝灰原料中加入定量碱性物料焙烧，得到焙烧料；2)将焙烧料水浸，得到水浸液和水浸渣；3)向水浸液中通入CO2气体反应，得到冰晶石产品。本发明将铝灰中的氟化物有效转变，将其集中转化成高价值产品，实现了危险废物的高值化利用，有效解决了铝行业危险废物无法高效回收利用的难题。本发明工艺流程全程无污染排放，对环境友好，积极响应资源节约型和环境友好型社会的发展。
Process method for preparing cryolite through aluminum ash recombination
The invention discloses a process method for preparing cryolite by recombining aluminum ash, which comprises the following steps: 1) adding a quantitative alkaline material into a fluorine-containing aluminum ash raw material, and roasting to obtain a roasted material; (2) the roasted material is subjected to water leaching, and water leaching liquid and water leaching residues are obtained; and 3) introducing CO2 gas into the water immersion liquid for reaction to obtain a cryolite product. According to the method, fluorides in the aluminum ash are effectively converted into high-value products in a centralized mode, high-value utilization of the hazardous waste is achieved, and the problem that the hazardous waste in the aluminum industry cannot be efficiently recycled is effectively solved. The whole process flow is free of pollution emission, is environment-friendly, and actively responds to the development of the resource-saving and environment-friendly society.
本发明公开了一种利用铝灰重组制备冰晶石的工艺方法，包括以下步骤：1)向含氟铝灰原料中加入定量碱性物料焙烧，得到焙烧料；2)将焙烧料水浸，得到水浸液和水浸渣；3)向水浸液中通入CO2气体反应，得到冰晶石产品。本发明将铝灰中的氟化物有效转变，将其集中转化成高价值产品，实现了危险废物的高值化利用，有效解决了铝行业危险废物无法高效回收利用的难题。本发明工艺流程全程无污染排放，对环境友好，积极响应资源节约型和环境友好型社会的发展。
Process method for preparing cryolite through aluminum ash recombination
一种利用铝灰重组制备冰晶石的工艺方法
JIAO FEN (author) / QIN WENQING (author) / DONG LIANGMIN (author) / HUANG YALIN (author) / WEI XIN (author) / LIU SHIYANG (author)
2022-12-30
Patent
Electronic Resource
Chinese
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