Basic research on high-temperature thermochemical reactions of industrial inorganic solid waste
With the continuous development of industry,the consumption of mineral resources such as coal,oil shale,magnesite and iron ore has been increasing,resulting in a large amount of inorganic industrial solid waste.Inefficient solid waste disposal methods to date have led to significant environmental pollution and resource waste.In this work,a high-temperature thermochemical conversion method for industrial solid waste was proposed,directly converting the solid waste into high-value-added materials.This conversion method determined the target products and reaction temperatures through thermodynamic analysis and utilizing fluidized beds to take their advantages,such as high heat and mass transfer efficiency,which were easy to scale up and to promote solid-solid high-temperature thermochemical reactions among various chemical components in solid wastes.This process produced composite powders for direct use or other higher-value end products through further processing.Experiments conducted with various solid waste materials,such as magnesite flotation tailings,boron mud,oil shale residue,iron tailings,alumina ash and coal gangue,had validated the feasibility of this method.Experimental results demonstrated that utilizing high-temperature fluidized bed thermochemical reaction technology can successfully convert inorganic industrial solid waste into high-value-added products.This research provided a new approach to effectively utilize inorganic industrial solid waste,reduce resource load,protect the ecological environment and promote green,low-carbon,and sustainable development.It also offered specific data support for the comprehensive utilization of related solid waste materials.
inorganic industrial solid wastehigh-temperature thermochemistryfluidizationparticle techniquemultiphase powder material
万方数据
维普
