The term "sulfur cake" here refers to the solid sulfur-containing by-product precipitated during the regeneration process of desulfurization agents after absorbing hydrogen sulfide from coke oven gas in the coke oven gas desulfurization process. It usually appears in block or cake form, primarily composed of elemental sulfur and minor impurities. After collection, drying, crushing, and purification, such sulfur cakes can be used as chemical raw materials for producing acids, fertilizers, rubber additives, etc., or, upon meeting environmental protection requirements, utilized in other resource recovery applications.