A device and method for efficiently recovering tungsten from tungsten-containing waste

Abstract

The application discloses a device and method for efficiently recovering tungsten from tungsten-containing waste, which comprises an oxidation device, a heat exchange-normal pressure condensation recovery device, a vacuum condensation recovery device, an oxidation detection device and a control device. The oxidation device is used for roasting and oxidizing the tungsten-containing waste. The heat exchange-normal pressure condensation recovery device is used for recovering the tungsten oxide and heat generated in the tail gas of the tungsten-containing waste. The vacuum condensation recovery device is used for sublimation and deposition of the tungsten oxide. When the tungsten on the surface of the tungsten-containing waste particles is completely oxidized according to the detection result of the oxidation detection device, the oxidation is stopped, the first valve is closed, and the oxidation furnace is sealed. Then, the second valve is opened, and after the sublimation and deposition of the tungsten oxide are completed, the second valve is closed. The roasting-condensation recovery cycle is repeated for multiple times. The application improves the oxidation efficiency of the tungsten-containing waste, and recovers the tungsten oxide product with high purity and fine granularity from the tungsten-containing waste.

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