文献类型：期刊文献

英文题名：A high-efficiency hydrocyclone designed by response surface methodology for acid hydrolysis residue recycling

作者：Xu, Yanxia[1];Tang, Bo[1];Song, Xingfu[1];Yu, Jianguo[1]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai 200237, Peoples R China

年份：2019

卷号：6

期号：1

外文期刊名：ROYAL SOCIETY OPEN SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000465430600003)】；

基金：This study was financially supported by the National Natural Science Foundation of China (51504098).

语种：英文

外文关键词：hydrocyclone; acid hydrolysis residue; classification sharpness; response surface methodology

摘要：A high-efficiency hydrocyclone was designed by response surface methodology to evaluate the recycling of acid hydrolysis residues from titanium dioxide (TiO2) production as a study case. TiO2 is an important product and the world's best white pigment. During its production from ilmenite (FeTiO3) by the sulfuric acid method, the incomplete reaction produces large amounts of residue, which also contain unreacted ilmenite. Large amounts of residue are generally accumulated without any treatment. Hydrocyclone use is regarded as a method for separating and recovering chemicals from process residues by which the unreacted components can be recycled efficiently. However, hydrocyclones designed by conventional procedures may have some limitations regarding classification sharpness. In this paper, numerical experiments and laboratory tests were performed to evaluate the classification sharpness of various hydrocyclone designs. Response surface methodology was used to optimize hydrocyclones with different structural configurations. Based on the response models, a designed hydrocyclone with a high sharpness of classification of particles was constructed. The sharpness of the newly designed hydrocyclone increased from 80.5% to 93.3%. The vortex finder separated approximately 89.9% of the fine particles in impurities, while 51.0% of TiO2 was recycled by the spigot. The hydrocyclone proposed in this paper properly minimizes the risk of environmental pollution caused by TiO2 production and provides a significant estimated cost savings.