Metallurgical system for tungsten mineral raw materials without pollutant discharge in whole process

The utility model discloses a metallurgical system for tungsten mineral raw materials without pollutant discharge in the whole process. The metallurgical system comprises a raw material preparation device, a roasting kiln, a clinker grinding device, a leaching device, a solid-liquid separation device, at least one-stage of purification and impurity removal device, a crystallization device and a liquid-solid separation device of crystallized slurry, wherein the raw material preparation device is provided with a leaching residue receiving opening; the roasting kiln is provided with a coarse clinker outlet; the clinker grinding device is provided with a fine clinker outlet; the leaching device is provided with a leaching agent inlet, a leaching slurry outlet, a feedback gas recycling port, a crystallized slurry separating and washing solution recycling port, a residue phase washing solution recycling port and a seed crystal inlet; the solid-liquid separation device is provided with a leaching residue feedback port, a washing solution feedback outlet and an evaporated and crystallized condensate water receiving port; the solid-liquid separation device is communicated with the seed crystal inlet of the leaching device in the process of feeding the material back into the leaching residue receiving opening of the raw material preparation device; the crystallization device is provided with a gas feedback port feeding back to the leaching device; and the liquid-solid separation device of crystallized slurry is provided with an outlet for returning the crystallized mother solution to the leaching device and a tungsten product outlet. According to the metallurgical system disclosed by the utility model, wastewater pollution is eliminated, the consumption of auxiliary materials isgreatly reduced, and the cost is low.