西北工程技术学报2024，Vol.23Issue(4)：305-310,6.
氧化锡和氧化钽混合球状粉体喷雾造粒工艺研究
Study on the Spray Granulation Process of Tin Oxide and Tantalum Oxide Mixed Spherical Powder
摘要
Abstract
The quality of tin-tantalum oxide(TTO)raw powder is a key factor in determining the quality of its target material.For the TTO raw material powder,a nano slurry with concentrated particle size distribution and stable dispersion was prepared by adjusting the pH value,dispersant dosage,and ball milling dispersion process.By controlling the slurry solid content,inlet air temperature,and atomizer speed,TTO granulation powder with excellent sphericity,uniform particle size distribution,and good fluidity was obtained.Finally,characterization was performed using techniques such as TEM,SEM,UV-Vis spectrophotometry,laser particle size distribution analysis,and vibrating density measurement.The results show that the nano slurry system achieves the best stability and dispersion when the pH is 7,the PVP dispersant dosage is 10%,the ball milling speed is 2 400 r/min and the milling time is 15 minutes.The TTO granulation powder exhibits a narrow particle size distribution(approximately 10 to 12 μm),high sphericity,a smooth surface without agglomeration,and excellent flowability when the solid content is 40%,the air inlet temperature is 220℃,and the atomizer speed is 1 800 r/min.关键词
掺钽氧化锡纳米浆料/TTO球状粉体/喷雾造粒/分散稳定性/流动性Key words
tin-tantalum oxide nano slurry/TTO spherical powder/spray granulation/dispersion stability/fluidity分类
矿业与冶金引用本文复制引用
马少龙,何力军,王东新,罗文,孟将,左宁伟..氧化锡和氧化钽混合球状粉体喷雾造粒工艺研究[J].西北工程技术学报,2024,23(4):305-310,6.基金项目
宁夏自然科学基金项目(2020AAC03507) （2020AAC03507）
