Method for determining preparation proportion of dry fly ash for blast furnace coal injection

The invention belongs to the technical field of iron making in the iron and steel technology, and particularly relates to a method for determining the preparation proportion of dry fly ash for blast furnace coal injection. According to the requirements of the adding mass proportion of the dry fly ash in mixed coal powder, the carbon content and iron content in the dry fly ash, the carbon content in the mixed coal powder, the mixed coal powder average particle size composition, the blow-in hot air temperature and oxygen rate are regarded as basic reference data, the preparation proportion of the dry fly ash for blast furnace coal injection is determined according to the method below, and the specific formula can be found in the patent certificate. The mixed coal powder serves as a carrier,the mode of mixing the fly ash and the coal powder is adopted, operation indicators of the elements of the fly ash and different operation states of a blast furnace serve as technical reference data,the adding proportion of t