Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Resource utilization method of red mud and carbon dioxide
The invention provides a resource utilization method of red mud and carbon dioxide, and relates to the technical field of red mud reutilization. The resource utilization method comprises the following steps: crushing red mud to obtain red mud particles; adding an inorganic salt solution containing carbonate radicals and water into the red mud particles, and stirring to obtain red mud slurry; placing the red mud slurry in a reactor with a distributed electric field, introducing CO2 gas, stirring, carrying out induced carbonization reaction, and carrying out solid-liquid separation to obtain carbonized red mud precipitate and an inorganic salt solution; screening the carbonized red mud precipitate to obtain coarse-particle carbonized red mud used as an ironmaking raw material or machine-made sand and carbonized fine mud used for separating aluminum concentrate and silicon concentrate; and introducing CO2 into the inorganic salt solution to crystallize the baking soda, and recycling as the inorganic salt solution. The method for enhancing the carbonization depth is innovated, the concentrate product obtained through indirect carbonization and the inorganic salt solution subjected to crystallization treatment can be efficiently utilized, and industrial large-scale production and application and popularization are facilitated.
本发明提供一种赤泥和二氧化碳的资源化利用方法，涉及赤泥再利用的技术领域。所述资源化利用方法为：将赤泥进行破碎得到赤泥颗粒；向赤泥颗粒中添加含碳酸根的无机盐溶液和水，搅拌得到赤泥料浆；将赤泥料浆置于分布电场的反应器中，通入CO2气体并搅拌，进行诱导碳化反应，之后固液分离得到碳化赤泥沉淀和无机盐溶液；对碳化赤泥沉淀进行筛分得到作为炼铁原料或机制砂使用的粗颗粒碳化赤泥，以及用于分离铝精矿和硅精矿的碳化细泥；将无机盐溶液通CO2结晶小苏打后作为无机盐溶液循环利用。本发明创新了加强碳化深度的方法，采用间接碳化所获得的精矿产品和经过结晶处理的无机盐溶液都能得到高效利用，利于工业大规模生产和推广使用。
Resource utilization method of red mud and carbon dioxide
The invention provides a resource utilization method of red mud and carbon dioxide, and relates to the technical field of red mud reutilization. The resource utilization method comprises the following steps: crushing red mud to obtain red mud particles; adding an inorganic salt solution containing carbonate radicals and water into the red mud particles, and stirring to obtain red mud slurry; placing the red mud slurry in a reactor with a distributed electric field, introducing CO2 gas, stirring, carrying out induced carbonization reaction, and carrying out solid-liquid separation to obtain carbonized red mud precipitate and an inorganic salt solution; screening the carbonized red mud precipitate to obtain coarse-particle carbonized red mud used as an ironmaking raw material or machine-made sand and carbonized fine mud used for separating aluminum concentrate and silicon concentrate; and introducing CO2 into the inorganic salt solution to crystallize the baking soda, and recycling as the inorganic salt solution. The method for enhancing the carbonization depth is innovated, the concentrate product obtained through indirect carbonization and the inorganic salt solution subjected to crystallization treatment can be efficiently utilized, and industrial large-scale production and application and popularization are facilitated.
本发明提供一种赤泥和二氧化碳的资源化利用方法，涉及赤泥再利用的技术领域。所述资源化利用方法为：将赤泥进行破碎得到赤泥颗粒；向赤泥颗粒中添加含碳酸根的无机盐溶液和水，搅拌得到赤泥料浆；将赤泥料浆置于分布电场的反应器中，通入CO2气体并搅拌，进行诱导碳化反应，之后固液分离得到碳化赤泥沉淀和无机盐溶液；对碳化赤泥沉淀进行筛分得到作为炼铁原料或机制砂使用的粗颗粒碳化赤泥，以及用于分离铝精矿和硅精矿的碳化细泥；将无机盐溶液通CO2结晶小苏打后作为无机盐溶液循环利用。本发明创新了加强碳化深度的方法，采用间接碳化所获得的精矿产品和经过结晶处理的无机盐溶液都能得到高效利用，利于工业大规模生产和推广使用。
Resource utilization method of red mud and carbon dioxide
一种赤泥和二氧化碳的资源化利用方法
HU WENTAO (Autor:in) / NI WEN (Autor:in) / ZHAO LIN (Autor:in) / YANG FEIHUA (Autor:in) / LIANG SIYI (Autor:in) / LIU XINWEI (Autor:in)
27.08.2024
Patent
Elektronische Ressource
Chinesisch
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