Process and device for directly reducing dedusting ash of steel plant

The invention discloses a steel plant fly ash direct reduction process and device, and belongs to the field of fly ash treatment, and the steel plant fly ash direct reduction process comprises a batching system, a grinding system, a coal gas supply system, a dust removal system, a cyclone reduction system and a briquetting machine; the batching system conveys the mixed fly ash to the grinding system; the grinding system is connected with the cyclone reduction system in sequence; the coal gas supply system comprises a first-stage gas supply system, a second-stage gas supply system and a third-stage gas supply system; combustors are arranged in the first-stage gas supply system and the second-stage gas supply system; the dust removal system comprises a primary dust collector and a secondary dust collector; the cyclone reduction system comprises a first-stage cyclone cylinder, a second-stage cyclone cylinder and a third-stage cyclone cylinder; and the briquetting machine is used for briquetting the directly redu