How To Manufacture Tungsten Wire
【Chinatungsten Online News Net- Tungsten News】
Refining tungsten from ore cannot be performed by traditional smelting since tungsten has the highest melting point of any metal. Tungsten is extracted from ore through a series of chemical reactions. The exact process varies by manufacturer and ore composition, but ores are crushed then roasted and/or sent through a variety of chemical reactions, precipitations, and washings to obtain ammonium paratungstate (APT). APT can be sold commercially or further processed to tungsten oxide. Tungsten oxide can be roasted in a hydrogen atmosphere to create pure tungsten powder with water as a by-product. Tungsten powder is the starting point for tungsten mill products, including wire
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