NOVELTY - A hydrogen metallurgy process comprises: (a) rapidly pre-reducing iron ore concentrate granules containing 5-15 mm of iron ore concentrate granules, 5-20 mm of iron ore concentrate granules prepared by the market iron ore concentrate under the conditions of hydrogen gas being more than 80%, 1200-1400?C, and 0.2-2 MPa; rapidly cracking it as high temperature hydrogen and carbon black; (b) carrying out metallurgy residual heat high-temperature steam electrolytic hydrogen production; and (c) carrying out tail gas separation and carbon monoxide transformation hydrogen production.    USE - The hydrogen metallurgy process is useful for industrial and commercial applications.    ADVANTAGE - The hydrogen metallurgy process sufficiently reflects the high efficiency, energy-saving, best quality of product, and best effect of emission reduction of the hydrogen metallurgy.    DETAILED DESCRIPTION - A hydrogen metallurgy process comprises: (a) rapidly pre-reducing iron ore concentrate granules containing 5-15 mm of iron ore concentrate granules, 5-20 mm of iron ore concentrate granules prepared by the market iron ore concentrate under the conditions of hydrogen gas (H2) being more than 80%, 1200-1400?C, and 0.2-2 MPa; producing sponge iron having degrees of reduction that is more than 70%, rapidly pre-reduction by preferably using market fine iron ore concentrate granules having granularity of less than 0.1 mm to prepare the iron ore concentrate granules having grain diameter of 5-20 mm under the conditions of H2 being more than 90%, 700-1200 degrees C, and 0.2-2 MPa, producing the sponge iron having degrees of reduction that is more than 80%, using hydrogen metallurgy smelt cracking furnace to vaporize natural gas or coal bed gas, shale gas, underground coal gas, methane, gas hydrate, and using lignite, perhydrous coal dry powder, plant dry powder, alga dry powder together with hydrogen or hydrocarbon fuel gas as carrier; rapidly cracking it as high temperature hydrogen and carbon black; outputting the high temperature hydrogen to provide the hydrogen source for the hydrogen metallurgy pre-reduction furnace, reducing and separating the sponge iron input to the hydrogen metallurgy pre-reduction furnace to produce melted iron or semi-steel; (b) carrying out metallurgy residual heat high-temperature steam electrolytic hydrogen production: utilizing the high-enthalpy tail gas residual heat of a hydrogen metallurgy pre-reduction furnace to generate 600-1,000 degrees C of high-temperature steam, using proton conductor solid electrolyte high-temperature steam electrolytic bath stack or oxygen ion conductor solid electrolyte high-temperature steam electrolytic bath stack to perform low-energy consumption high-temperature steam electrolytic hydrogen production from the generated high-temperature steam; and (c) carrying out tail gas separation and carbon monoxide transformation hydrogen production: performing dust elimination, heat exchange, bag filter rinsing, desulfuration, carbon monoxide transformation, and gas separation for the tail gas of the hydrogen metallurgy pre-reduction furnace. INDEPENDENT CLAIMS are:    (1) a hydrogen metallurgy and smelting cracking furnace used for hydrogen metallurgy process comprising a hydrogen cooled furnace (1) and a hydrogen cooled cover (3); where a sealing gasket (2) made of austenitic stainless steel wallet and flexible graphite plate with hydrogen embrittlement resistance is respectively provided between the hydrogen cooled furnace (1) and the hydrogen cooled cover (3), and to all connecting ports; a hydrogen cooled electrode insulating locating collector sealing device (5) is provided on the middle of the furnace cover (3) via the sealing gasket; multiple ceramic feeding pipes (4) made of sintered silicon nitride and strengthened by cut silicon nitride ceramic fiber and silicon carbide are arranged by the sealing gaskets and stretched into the furnace in vicinity of the hydrogen cooled electrode insulating locating collector sealing device (5); a hydrogen cooled circular cylinder electrode lifting device (6) is provided on the upper end surface of the hydrogen cooled electrode insulating locating collector sealing device (5) concentrically; a high strength hollow electrode (7) with a check valve joint is provided inside the hydrogen cooled circular cylinder electrode lifting device (6); the lower end is stretched into the core area of the furnace; the hydrogen cooled circular cylinder electrode lifting device (6) can be used to lift and suspend the electrode optionally; and the high insulating ceramic hydraulic slide valve type water port or slag port (8) is provided in the area of the furnace below the slag line and within the molten iron slag line which can prevent the plasma arc burning;    (2) a hydrogen metallurgy pre-reduction furnace for hydrogen metallurgy process, where it is a hydrogen metallurgy rotary kiln comprising a kiln head (919), a kiln body (920), a kiln tail (921), and a transmission system (912); where the housings (91,99) of the kiln head, the kiln body, and the kiln tail are made from extra-low-carbon stainless steel or low-carbon austenitic stainless steel; a ceramic hollow ball casting material made of nitrogen in a blowing manner or a thermal insulation layer (92,910) made of plastic is arranged inside the housing; a carbon fiber as a heating element and a resistance heating cylindrical element (94) covered wholly with sintered and reacted silicon nitride are arranged inside the thermal insulation layer (92) of the kiln body (920); the whole furnace barrel-shaped electric heating element comprises three connected sections; the flexible ring group (913) comprising boron nitride fiber or silicon carbide ceramic fiber sealing ring and flexible graphite sealing ring is installed; the carbon fiber heating high temperature insulation tungsten molybdenum as conductive barrel is connected with the copper sliding ring (95,96); and the copper slide ring is connected with the steel shell; and    (3) a high-temperature solid oxide vapor electrolytic tank stack for hydrogen metallurgy process, where the high-temperature proton conductor solid electrolyte of strontium cerium oxide (SrCeO3) or strontium zirconium oxide (SrZrO3) doped with yttrium (Y) or ytterbium (Yb) is firstly used, or zirconium oxide (ZrO2) high-temperature oxygen ion conductor solid electrolyte doped with yttrium oxide (Y2O2) is used as core to produce large-string tubular electrolytic single battery with super-high power; multiple electrolytic single batteries are used for forming practical electrolytic tank according to hydrogen producing scale; and multiple electrolytic tanks are overlapped to form a electrolytic tank stack with super-high power to satisfy large scale of metallurgy and energy system.    DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram of the hydrogen metallurgy process (Drawing includes non-English language text).