The exploration and utilization of lunar resources have become the major objectives of future lunar exploration missions.The classified collection and processing of lunar minerals is the basic prerequisite for the in-...The exploration and utilization of lunar resources have become the major objectives of future lunar exploration missions.The classified collection and processing of lunar minerals is the basic prerequisite for the in-situ exploration and utilization of lunar resources.In this study,we propose a scheme for in-situ separation of magnetic minerals from lunar soils using the dry magnetic separation method.The scheme can realize the purpose of separating magnetic minerals from lunar regolith by altering the motion trajectory of lunar regolith particles with different magnetic properties.Detailed modeling of the dry magnetic separation device is conducted,and the three-dimensional distribution of magnetic parameters is calculated and analyzed.Based on the characterization and analysis of the Chang E-5's samples,the morphologies and physical parameters of lunar regolith particles are modeled and simulated.A discrete element simulation of the motion process of lunar regolith particles under multi-physical field conditions is performed,and the influences of key parameters on the beneficiation performance of lunar magnetic minerals are investigated.Our results indicate that optimal separation and beneficiation of lunar regolith particles can be achieved under specific conditions of magnetic field strength and drum speed.Additionally,we analyze the effects of lunar weak gravity conditions and the charged nature of lunar particles on the beneficiation process,showing that these factors can obviously enhance the beneficiation process of lunar ilmenites.This study demonstrates the feasibility of using the dry magnetic separation method for the beneficiation of magnetic minerals from lunar regolith,providing a theoretical basis for the scientific tasks of collecting,processing,and utilizing lunar mineral resources.展开更多
基金supported by the National Key Research and Development Program of China(Grant No.2021YFA0717200)the National Natural Science Foundation of China(Grant No.42307451)。
文摘The exploration and utilization of lunar resources have become the major objectives of future lunar exploration missions.The classified collection and processing of lunar minerals is the basic prerequisite for the in-situ exploration and utilization of lunar resources.In this study,we propose a scheme for in-situ separation of magnetic minerals from lunar soils using the dry magnetic separation method.The scheme can realize the purpose of separating magnetic minerals from lunar regolith by altering the motion trajectory of lunar regolith particles with different magnetic properties.Detailed modeling of the dry magnetic separation device is conducted,and the three-dimensional distribution of magnetic parameters is calculated and analyzed.Based on the characterization and analysis of the Chang E-5's samples,the morphologies and physical parameters of lunar regolith particles are modeled and simulated.A discrete element simulation of the motion process of lunar regolith particles under multi-physical field conditions is performed,and the influences of key parameters on the beneficiation performance of lunar magnetic minerals are investigated.Our results indicate that optimal separation and beneficiation of lunar regolith particles can be achieved under specific conditions of magnetic field strength and drum speed.Additionally,we analyze the effects of lunar weak gravity conditions and the charged nature of lunar particles on the beneficiation process,showing that these factors can obviously enhance the beneficiation process of lunar ilmenites.This study demonstrates the feasibility of using the dry magnetic separation method for the beneficiation of magnetic minerals from lunar regolith,providing a theoretical basis for the scientific tasks of collecting,processing,and utilizing lunar mineral resources.
