The Development Of Mineral Particle Sorting Device For Three-phase Fluidized Bed

In the past few decades,the mineral processing technology has made great progress with the rapid development of the mining industry.Scientific and reasonable recycling of minerals has become an important research content of the mining industry.However,a single sorting process cannot achieve high sorting.The enrichment efficiency,while the traditional sorting device has a large fuselage,the sorting effect is poor,and the beneficiation methods and equipment that cause great pollution in the original environment are facing severe challenges.Based on the above problems,this paper proposes a three-phase fluidized bed mineral particle sorting technology and develops a sorting device.This technology combines mineral sorting and fluidization technology,and uses wet re-election combined process with water and air.Sorting medium,by weakening the influence of the particle size and shape of the ore particles on the sorting results,the metal minerals are sorted and enriched under the action of gravity.According to the principle of three-phase fluidized bed mineral particle sorting technology,the paper designs the overall design of the three-phase fluidized bed mineral particle sorting device and system.The three-phase fluidized bed mineral particle sorting flow field model is established.The computational fluid dynamics software FLUENT was used to simulate the effect of three-phase fluidized bed mineral particle sorting.At the same time,the mixed mineral particles were sorted experimentally under the same working conditions.The main conclusions are as follows(1)It can be seen from the simulation that the copper content decreases with the increase of the distribution distance at different influent flow rates,and the best results are obtained when the influent flow rate is 1.5 m/s,reaching 30.858%;with the distribution distance under different drop openings When the drop opening size is 3 mm,the sorting effect is the best,reaching 30.858%;it decreases with the increase of the distribution distance at different particle sizes,and increases with the increase of the particle size,wherein the particle size is 0.25 mm.The content of the components was the highest,reaching 12.946%;it decreased with the increase of the distribution distance at different airflow speeds,and the best sorting effect was achieved when the airflow velocity was 0.03 m/s,reaching 37.146%,which was improved by about 6 before the air distribution.percentage point.(2)Through experimental analysis: the copper content decreased with the increase of the distribution distance at different influent flow rates,and the best results were obtained when the influent flow rate was 1.5 m/s,reaching 42.786%;the copper content was at different falling openings with the distribution distance.When the drop opening is 3 mm,the sorting effect is best,reaching 42.786%;it decreases with the increase of the distribution distance at different particle sizes,and increases with the increase of the particle size,wherein the particle size is 0.25 mm.The content of the components is the highest,reaching 18.556%;it decreases with the increase of the distribution distance at different airflow speeds,and the separation speed is best when the gas velocity is 0.03 m/s,especially when the distribution distance is 45~115 mm.%,compared with the pre-gas,can increase by about 7 percentage points.(3)Comparison of simulation and experimental results: simulation and experimental results of different influent flow rates,discharge flow rates,particle sizes and gas flow rates have similar distribution patterns,indicating the proposed three-phase fluidized bed mineral particle fraction The feasibility and correctness of the chosen new technology theory.The research of the paper obtained the method and law of th ree-phase fluidized bed mineral particle sorting,further enriched the theory and method of three-phase fluidized bed mineral particle sorting,and designed and optimized the three-phase fluidized bed mineral particle sorting for understanding and amplific ation.The device provides theoretical basis,provides reference guidance for wet gravity beneficiation and a wider application field,and has broad application prospects.