Manufacturing method of WC-hard metal powder using hard metal scrap

The present invention is a first step of a process for producing a WC-based cemented carbide powder using a cemented carbide scrap, oxidizing the scrap carbide; A second step of pulverization by grinding the oxide carbide scrap; It relates to WC-based hard metal powder manufacturing method using a hard metal scrap comprising: a; gasification process in a plasma column in a powder of cemented carbide scrap oxidation, reduction and the third stage passes through a carburizing process. According to the present invention, in the recycling process of waste carbide scrap, an acid (Acid) extraction or dissolution process, environment-friendly, yet by applying a low-energy consumption thermal plasma process can be directly converted to the carbide powder in the form of useful high-quality industrially without that there is an effect.