TY - JOUR
TI - Simulation analysis of enhanced fluidization leaching process and geothermal synergy in deep ground metal mines
AU - Zhang Deqing
AU - Wang Ende
AU - Luan Jinpeng
AU - Wang Xue
JN - Thermal Science
PY - 2024
VL - 28
IS - 2
SP - 1219
EP - 1227
PT - Article
AB - Based on the mining of deep metal mineral resources and the current in-situ  leaching mining process of uranium ore, combined with the technological  characteristics of "fluidized mining of metal ore" and "deep geothermal  development", an innovative concept of strengthening the fluidized leaching  process of deep metal ore - geothermal co mining is proposed, A numerical  simulation method was used to analyze the turbulent flow and heat transfer  characteristics of a new type of heat transfer enhancement element - a swirl  plate as a support between tubes. The renormalization two equation  turbulence model was used for numerical simulation, and the SIMPLEC  algorithm was used for pressure and velocity coupling, and the enhanced wall  treatment method was used for wall treatment. The periodic changes in the  cross-sectional flow field and turbulence intensity of the unit flow channel  were analyzed, as well as the synergistic relationship between the flow  field and temperature field on the cross-section. The corresponding  variation trends of the average Nusselt number and the average synergy angle  of the cross-section were compared. The experimental results show that the  270-4.25 cyclone sheet can more fully utilize the enhanced heat transfer of  the spin flow, and the overall average Nusselt number is higher than  180-2.0, which is consistent with the experimental results. That is, θm is  low where high Nub and θm is high where low Nub is low, indicating that the  changing trend of the two is fully consistent with the field synergy  principle. This paper systematically analyzes the basic theoretical  bottleneck, key technical problems and future development trend in the  process of geothermal joint mining of deep metal mine, and aims to provide  reference for the strengthening of geothermal joint mining and geothermal  joint mining of deep metal ore.