Smelting device and technology for reducing magnetic metal through coal gas

The invention relates to the technical field of metal smelting, and specifically relates to a smelting device and technology for reducing magnetic metal through coal gas. The device is characterized in that a vertical suspension device is arranged, wherein the suspension device comprises two tracks which are lengthways arranged in parallel on a furnace body; a plurality of teeth are arranged on the two tracks; an upper limiter and a lower limiter are correspondingly arranged at the upper ends and the lower ends of the two tracks; the teeth are engaged with a gear of a double-shaft motor whichis fixedly arranged at the outer side of the housing and can move up and down; an electromagnetic coil is arranged in the housing and is fixedly connected to an iron core; the suspension device is driven to move up and down through the double-shaft motor, and the height of the suspension device on a proper position at the track can be determined, and thus the magnetism of iron ore and the clearances among furnace material