Preparation of Spherical Rare Earth Red Phosphor Particles by Droplet to Particle Conversion

文件类型：PDF文档
文件大小：793K
The invention provides a method for preparing spherical rare earth red phosphor particle by droplet-particle transform, comprising : a step of preparing initiation materials with metal ion concentration of 0.005M to 2.0M by adding acid into rare earth oxides; a carbamide mixing step of adding carbamide into the initiation materials and mixing; a liquid drop forming step of forming liquid drops by spraying or atomizing using ultrasonics; a drop-particle transforming step comprising evaporating, drying and pyrogenation; and a powder forming step including cleaning, drying the processed particles.