In the extraction metallurgy of tungsten and titanium, the importance of metal tungsten and titanium powder production is obvious, and the performance of tungsten titanium powder greatly influences the performance of tungsten products. Tungsten titanium powder is the quality of the superior performance of tungsten titanium and tungsten titanium alloy, tungsten titanium powder industry is facing great challenges, it must meet the market demand for it more and more high, the production of tungsten titanium powder not only have chemical purity requirements, but also has the physical properties and process performance requirements, especially for some special purpose of ultrafine tungsten titanium powder preparation technology remains to be solved.
(1) add ammonium tungstate to the distilled water and dissolve it, then add butyl titanate and isopropyl;
(2) add hydrochloric acid solution and mix the magnetic mixture evenly;
(3) add the mixed solution to the high-pressure reaction kettle to heat the reaction;
(4) after cooling to room temperature, filter and obtain sediment; Wash the sediment and dry it;
(5) the dried sediment is placed in the muffle furnace, and the titanium oxide and tungsten trioxide powder are obtained.
(6) put titanium oxide and tungsten trioxide powders in the plasma reaction chamber, in the reaction chamber through the form of high temperature plasma ionization of inert gas, titanium oxide and tungsten trioxide powders by high temperature plasma heating after reduction of tungsten titanium powder under the reducing atmosphere.
The ammonium tungstate solution was added to 2L distilled water, which was heated to 70 degrees C to dissolve the ammonium tungstate, and then added 45 mL butyl titanate and 150 mL isopropyl to ammonium tungstate solution. The 30g hydrochloric acid was configured into a solution, and the solution was slowly added to the above solution, and the magnetic force was stirred for 30min at room temperature. After stirring evenly, the reaction kettle was put in the oven of 80%c in the high-pressure reaction kettle lined with ptfe. After the reaction, it was cooled to room temperature and filtered and washed with distilled water and anhydrous ethanol. The obtained precipitation was put into the oven for 10h in 50 % C oven, and 4h was burned in the furnace of 400 C. Then powder put in plasma reaction chamber, in order to work for 60 v voltage, working current is 400 a, the conditions of the ionization of argon arc, plasma for three tungsten oxide and titanium oxide powder heating temperature maintained at about 1000 ° C, the average particle size of titanium doped tungsten powder for 57 nm.
