Method for preparing antimonous oxide ultrafine powder
An antimony trioxide and ultra-fine powder technology, applied in chemical instruments and methods, inorganic chemistry, antimony compounds, etc., can solve the problems of difficult powder particle size control, large reaction area, low reaction temperature, etc., and achieve good and stable quality. , obvious economic benefits, the effect of simple processing technology
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[0017] Example 1
[0018] The preparation method of antimony trioxide ultrafine powder specifically includes the following steps:
[0019] 1) Mix 280 kg of antimony oxide ore, 80 kg of anthracite, and 50 kg of limestone in a mixer to obtain a mixture;
[0020] 2) The mixture obtained in step 1) is smelted at 1000°C, and then enters the bag filter through the oxidation chamber, the sedimentation chamber, and the surface cooling tube to obtain antimony oxide powder;
[0021] 3) Using the plasma generator as the heat source, the antimony oxide powder obtained in step 2) is vaporized under a high-temperature plasma jet at 3600°C through a gasification oxidation-condensation method to obtain gas phase antimony oxide ;
[0022] 4) The gaseous antimony oxide obtained by gasification in step 3) is quenched with inert gas to make the gas temperature drop rapidly. The gaseous antimony oxide undergoes nucleation, crystal growth, and separation from impurities to obtain super antimony trioxide. p...
Example Embodiment
[0025] Example 2
[0026] The preparation method of antimony trioxide ultrafine powder specifically includes the following steps:
[0027] 1) Mix 350kg of antimony oxide ore, 100kg of anthracite, and 80kg of limestone in a mixer to obtain a mixture;
[0028] 2) The mixture obtained in step 1) is smelted at 1100°C, and then enters the bag filter through the oxidation chamber, the sedimentation chamber, and the surface cooling tube to obtain antimony oxide powder;
[0029] 3) Using the plasma generator as the heat source, the antimony oxide powder obtained in step 2) is vaporized under a high-temperature plasma jet at 5500℃ by the vaporization oxidation-condensation method to obtain gas phase antimony oxide ;
[0030] 4) The gaseous antimony oxide obtained by gasification in step 3) is quenched with inert gas to make the gas temperature drop rapidly. The gaseous antimony oxide undergoes nucleation, crystal growth, and separation from impurities to obtain super antimony trioxide. powder;...
Example Embodiment
[0033] Example 3
[0034] The preparation method of antimony trioxide ultrafine powder specifically includes the following steps:
[0035] 1) Mix 400kg of sulfur-oxygen mixed antimony ore, 120kg of anthracite, and 100kg of limestone in a mixer to obtain a mixture;
[0036] 2) Smelt the mixture obtained in step 1) at 1180°C, and then enter the bag filter through the oxidation chamber, the sedimentation chamber, and the surface cooling tube to obtain antimony oxide powder;
[0037] 3) Using the plasma generator as the heat source, the antimony oxide powder obtained in step 2) is vaporized under a high-temperature plasma jet at 7500°C through a gasification oxidation-condensation method to obtain gas phase antimony oxide ;
[0038] 4) The gaseous antimony oxide obtained by gasification in step 3) is quenched with inert gas to make the gas temperature drop rapidly. The gaseous antimony oxide undergoes nucleation, crystal growth, and separation from impurities to obtain super antimony triox...
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