{"title":"Fluidized bed flotation of coarse molybdenite: The recoverability difference between the liberated and composite particles","authors":"Qi He , Qinglin Yin , Shihao Ding , Youfei Zhang , Zhao Wei , Yijun Cao , Xiahui Gui , Yaowen Xing","doi":"10.1016/j.powtec.2024.119973","DOIUrl":null,"url":null,"abstract":"<div><p>Fluidized bed flotation (FBF) is demonstrating its effectiveness in the recovery of coarse minerals. This study compares the effect of various parameters on the separation efficiency of coarse molybdenite in an FBF cell. The distribution of the molybdenite-bearing particles including liberated and composite particles in the tailings is examined to investigate the difference in recovery between different molybdenite-bearing particles. The findings highlight that the maximum Mo recovery reached 90%–95%. Among the tested parameters, superficial gas velocity and kerosene dosage have a relatively notable influence on molybdenite recovery. During the FBF process, the liberated molybdenite particles exhibited exceptional recoverability, while that of the composite particles was relatively lower and affected by the surface exposure features of the molybdenite. In contrast, the recovery of composite particles required a higher collector dosage and air bubble concentration.</p></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":null,"pages":null},"PeriodicalIF":4.5000,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Powder Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0032591024006168","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Fluidized bed flotation (FBF) is demonstrating its effectiveness in the recovery of coarse minerals. This study compares the effect of various parameters on the separation efficiency of coarse molybdenite in an FBF cell. The distribution of the molybdenite-bearing particles including liberated and composite particles in the tailings is examined to investigate the difference in recovery between different molybdenite-bearing particles. The findings highlight that the maximum Mo recovery reached 90%–95%. Among the tested parameters, superficial gas velocity and kerosene dosage have a relatively notable influence on molybdenite recovery. During the FBF process, the liberated molybdenite particles exhibited exceptional recoverability, while that of the composite particles was relatively lower and affected by the surface exposure features of the molybdenite. In contrast, the recovery of composite particles required a higher collector dosage and air bubble concentration.
期刊介绍:
Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests:
Formation and synthesis of particles by precipitation and other methods.
Modification of particles by agglomeration, coating, comminution and attrition.
Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces).
Packing, failure, flow and permeability of assemblies of particles.
Particle-particle interactions and suspension rheology.
Handling and processing operations such as slurry flow, fluidization, pneumatic conveying.
Interactions between particles and their environment, including delivery of particulate products to the body.
Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters.
For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.