"Chromium-containing stainless steel ash" refers to the chromium-containing dust and slag by-products generated and captured during high-temperature smelting, flue gas purification, or material collection in the processes of stainless steel smelting, alloy production, or chromium resource utilization. This type of chromium stainless steel ash typically contains certain amounts of chromium, iron, nickel, and other alloying elements. After collection, dewatering, sorting, and metallurgical processing, it can be recycled as a resource for chromium and iron alloys, re-entering the recycling loops of stainless steel production or other metallurgical processes.