The invention discloses
continuous casting used crystallizer
casting powder for a plate blank and a preparing method thereof. The
casting powder comprises, by weight, 28-30% of SiO2, 35-37% of CaO, 3.3-4.8% of MgO, 0.7-1.3% of Fe2O3, 5-7% of Al2O3, 9-11% of Na2O, 8-10% of F, 3-5% of
solid carbon. The method comprises the steps of
raw material preprocessing and detection,
casting powder formula design, batching and slurrying,
spray granulation, screen-dedusting and product detection. According to the method, the production technology is simple, the amount of dust is small,
spreadability is good, slugging can be achieved evenly and stably, and contribution to the environment is big. Detection proves that compared with a method using conventional raw materials, the method has the advantages that due to the adoption of
soldering flux waste residues which serve as the
raw material, the cost of the casting powder is reduced by 255-308 yuan /
ton, and after the casting powder is used for production, the primary qualified rate of casting blanks is increased by 3.0-3.8% on year-on-year basis.