Copper-mixed tungsten powder preparation process

Abstract

The invention relates to a copper-mixed tungsten powder preparation process. The process includes the steps that Na2WO4.5H2O and CuSo4.5H2O are dissolved in distilled water; a hydrochloric acid solution is dropped and components are magnetically stirred and evenly mixed; a mixed solution is placed in a high-pressure reaction kettle to be heated and react; the mixed solution is cooled to the indoor temperature and filtered, and sediment is acquired; the sediment is washed and dried; the dried sediment is placed in a muffle furnace so as to be burnt, and tungsten trioxide and copper oxide powder is acquired; tungsten trioxide and copper oxide powder is placed in a plasma reaction chamber, inert gas is ionized in the reaction chamber to generate high-temperature plasma, and after being heated through the high-temperature plasma, the tungsten trioxide and copper oxide powder is reduced to tungsten-copper powder under a reducing atmosphere. By the adoption of the process, tungsten oxide and copper oxide are prepared through sodium tungstate, copper sulfate and hydrochloric acid, the tungsten-copper powder is prepared through a plasma electric arc method, due to the fact that the large temperature difference exists between the tungsten-copper powder and a cooling medium, crystal nucleus growth is effectively restrained in the nucleation promoting process, and the acquired tungsten-copper powder can reach the nanoscale.

Description

technical field [0001] The invention relates to a preparation method of tungsten copper powder. Background technique [0002] In the extraction metallurgy of tungsten copper, the importance of metal tungsten and copper powder production is obvious, and the performance of tungsten copper powder affects the performance of tungsten products to a great extent. The quality of tungsten-copper powder is the guarantee for the superior performance of tungsten-copper and tungsten-copper alloys. The tungsten-copper powder industry is facing great challenges. Purity requirements, as well as physical and process performance requirements, especially the preparation technology of ultra-fine tungsten copper powder for some special purposes has yet to be resolved. [0003] There are many ways to produce tungsten-copper powder, one of which is to prepare tungsten-copper powder by using copper oxide and tungsten trioxide as raw materials through hydrogen reduction reaction; the traditional hy...

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Problems solved by technology

[0003] There are many ways to produce tungsten-copper powder, one of which is to prepare tungsten-copper powder by using copper oxide and tungsten trioxide as raw materials through hydrogen reduction reaction; the traditional hydrogen reduction process is to roast tungsten trioxide and copper oxide from raw materials, and then The tungsten-copper powder is obtained through two-stage reduction. The following problems exist in the preparation of tungsten-copper powder by the traditional method: 1. The reduction temperature is low, the reaction time is long, and time-consuming; 2. The tubular reduction furnace is used, and the equipment is complicated and not energy-saving; 3. The product Low purity, difficult for continuous production