Sintering process red mud carbonization recycling method and application of product thereof

The invention provides a sintering process red mud carbonization recycling method and application of a product thereof. The method comprises the following steps: step 1, preparing a magnesium salt solution, and heating the magnesium salt solution to obtain a magnesium salt hot solution; step 2, adding sintered red mud into the magnesium salt hot solution, and stirring and mixing to obtain slurry; and 3, introducing CO2-containing gas into the slurry, carrying out a carbonization reaction for a period of time, filtering the slurry after the carbonization reaction is finished, and drying the obtained filter residues to obtain a product which comprises calcium carbonate whiskers. According to the method, high-added-value utilization of the sintered red mud can be achieved, the high-added-value product calcium carbonate whisker can be efficiently prepared at low cost, and meanwhile carbon dioxide gas can be well cured. 本发明提供一种烧结法赤泥碳化再利用方法及其产物的应用。方法包括以下步骤：步骤一，配置镁盐溶液，并对所述镁盐溶液进行加热，得到镁盐热溶液；步骤二，将烧结法赤泥加入至所述镁盐热溶液中，搅拌混合，