With the increasingly stringent emission standards of flue gas, a demonstration project of desulfurizing by “red mud-limestone process” was established to make the flue gas meet the Emission Standards of Pollutants for Aluminum Industry. As shown by the detection results, the emission concentration of Sulfur dioxide (SO₂) was less than 50 mg/m³, and the particulate pollutant was less than 10 mg/m³, which realized the ultra-low emission of flue gas pollutants in a cheap and efficient way. In addition, the desulfurization mechanism was analyzed by laboratory comparative experiments and characterization analysis of engineering samples. Furthermore, the advantages and disadvantages of the red mud-limestone process are analyzed. Compared with other desulfurization processes, the red mud-limestone process is a reliable process for desulfurization of flue gas from calcination.

随着烟气排放标准的日益严格，建立了“赤泥-石灰石法”脱硫示范工程，以使烟气达到《铝工业污染物排放标准》。如检测结果所示， 二氧化硫（SO ₂）的排放浓度小于50mg / m ³，颗粒污染物小于10mg / m ^3。，从而以廉价，高效的方式实现了烟气污染物的超低排放。此外，通过实验室对比实验和工程样品的表征分析，对脱硫机理进行了分析。此外，分析了赤泥-石灰石法的优缺点。与其他脱硫工艺相比，赤泥-石灰石工艺是煅烧烟气脱硫的可靠工艺。