A COMPOSITE OF LOW GRADE LIME FROM FLUIDIZE-BED BOILER WITH CO2 EMISSION REDUCING AND REMOVAL OF SULFUR OXIDES IN EXHAUSTED GAS AND IMPROVEMENT OF HIGH BASICITY EFFICIENCY IN SMELTING PROCESS AND MANUFACTURING METHOD THEREOF

摘要

The present invention relates to a low grade quicklime composition generated from a fluidic layer boiler, and to a method for producing the same. The low grade quicklime composition has functions in removing sulfur oxide contained in sintered gas during a refining process by using a fluidic layer boiler scattering material having a large content of quicklime, improving basicity efficiency in a sintering furnace during a refining process, improving basicity efficiency during a refining process for reducing the discharging amount of carbon dioxide generated after sintering, desulfurizing sintered exhaust gas, and reducing the discharge of carbon dioxide. According to the present invention, sulfur oxide included in exhaust gas discharged as a result of a sintering process is effectively removed, and basicity efficiency in a sintering furnace is improved. Accordingly, durability of the sintering furnace is improved, and quicklime used during the sintering process is replaced, so the discharging amount of carbon dioxide generated during the sintering process is reduced. Moreover, by using the low grade quicklime composition for removing sulfur oxide according to the present invention, an effect in desulfurizing sulfur oxide in sintered exhaust gas can be easily improved without using a separate treating device.