Nano Grain Size Cesium Tungstate Applied for Ceramic Microsphere

Nano grain size cesium tungstate may be applied for preparing ceramic microsphere. And the raw material - nano cesium tungstate - can be prepared by the following steps:

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1.0 The reaction amount of ammonium tungstate and cesium sulfate was dissolved in a solvent methanol, and the solution was spray-dried to obtain a powder, and the obtained powder was further subjected to ball milling and pulverization to obtain a mixed powder of tungsten and cesium.

2.0 The tungsten and cesium mixed powder was placed in a closed reaction vessel with stirring. The tetraethylene glycol as a reaction solvent was added thereto, and the reaction was performed at 210°C for 8 hours. The mass of the reaction solvent was 1.1 times the mass of the tungsten and cesium mixed powder.

3.0 The reaction product in step 2.0 is separated by centrifugal separation, and washed with deionized water or ethanol, then dried, and then pulverized by a jet mill to obtain nano cesium tungstate. The air pressure of the air bag of the crushing chamber of the gas jet pulverization machine was 0.7MPa, and the speed of the classifier of the air jet mill was set to 1700r/m.

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