The Importance Of Pyrite Recovery From Gangue - 1519 Words

Gangue is one of the largest accumulating solid, and is particularly rich in pyrite. Therefore, pyrite recovery from gangue is not only significant for the environmental protection, but also for the development and production of chemicals. The dry separation methods, leading to the decreased waste and cost effectiveness, have received significant attention of many scholars. In this study, the vibration energy was introduced to promote the separation of particles. The interactions and effect of comparison of the gas velocity, vibration intensity, and bed height were investigated. Moreover, the sulfur migration for pyrite recovery from the gangue has been studied by several analytical techniques. The results show that the segregation efficiency was directly related to the interaction between various factors. After the separation, the sulfur content of the concentrates of -6+3, -3+1, and -1+0.5 mm was 37.94, 35.43, and 30.61%, respectively. The sulfur segregation’s standard devia tion (SSSD) was 0.70, achieving a satisfactory separation efficiency, indicating that pyrite was the foremost material in the concentrate, and S and Fe migrated in the form of pyrite during the separation process, indicating that pyrite could be effectively enriched by the dry method of vibration fluidized bed after the separation. Keywords: Interactions effect; dry method; vibrated fluidized bed; pyrite recovery; sulfur migration 1. Introduction Coal as one of the most important energy accounts for