![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
ABSTRACT
It is of significance for the environmental protection, the shortage of water, and the economic benefits to recovering the pyrite from the gangue with high sulphur content (GHSC) by the vibrated fluidized bed. In this study, characteristics such as the sulphur form of pyrite, size distribution, and dissociation degree of sample were analysed. Based on the above analysis, a vibrated fluidized bed was first used for the pyrite enrichment from GHSC. The effect of air velocity, vibration intensity, and bed height on the separation performance was analysed by separation experiments. The results show that the separation efficiency increased firstly and then decreased with increasing gas velocity, vibration intensity, and bed height. The total sulphur contents (TSCs) of −6 + 3, −3 + 1, and −1 + 0.5 mm size fraction materials were up to 37.94%, 35.43%, and 30.61%, respectively, and the enrichment grades were 1.72, 1.90, and 2.29 times, respectively, under the optimal conditions, indicating that using a vibrated fluidized bed was efficient for the pyrite enrichment.
Funding
The authors acknowledge the financial support by the National Natural Science Foundation of China for Innovative Research Group (No. 51221462), Fundamental Research Funds for the Central Universities (No. 2015XKZD10), and the Priority Academic Program Development of Jiangsu Higher Education Institutions.