Totally-closed one-stop smelting slag heat removal and resource recovery device system

The invention relates to a totally-closed one-stop smelting slag heat removal and resource recovery device system which comprises a tipping unit, a pretreatment unit and a terminal servicing unit, the tipping unit comprises a slag tank car, a slag pouring opening, a double-crank-link mechanism and a steel wire rope, and the pretreatment unit is composed of a slag sliding plate, a water-cooling roller set, a water-cooling roller set and a water-cooling roller set. The system comprises a pretreatment unit, a terminal preparation unit, a cam oscillation water cooling bed and a water-cooling vibrating screen, the pretreatment unit is used for primarily condensing, cooling, heating, crushing and screening molten slag into block slag, granular slag, powder slag and ash slag, and the terminal preparation unit is used for conveying the block slag to waste steel through a magnetic disk; in the conveying process, particle slag and powder slag are subjected to iron removal treatment through an iron remover, magnetic att