Current status and research progress of thermal reduction technology for producing yellow phosphorus from phosphate rock
Yellow phosphorus production is classified as a"high energy consumption"and"high pollution"industry.Currently,the electric furnace method stands as the sole industrialized approach for yellow phosphorus production.However,this method faces challenges such as excessive power consumption and the complexity of efficiently utilizing yellow phosphorus tail gas.Against the backdrop of the"peak carbon dioxide emissions"and"carbon neutrality"initiatives,it is an inevitable choice to fight the battle of pollution prevention and to realize the synergistic effect of pollution reduction and carbon reduction.Therefore,there is a pressing need for innovation in yellow phosphorus production technology.This paper summarizes the mechanism of phosphorus rock thermal reduction to produce yellow phosphorus and elucidates the influence of SiO2,Al2O3,and MgO fluxes,as well as carbonaceous reductant activity,on phosphorus rock reduction.The technical principles,characteristics,and existing issues of the production of yellow phosphorus through blast furnace method,electric furnace method,fluidized bed method,molten electrolysis method,low-temperature carbon thermal reduction of phosphoric acid method,silicothermic process,and the phosphorus-coal coupled production of yellow phosphorus and carbon monoxide method are elucidated.It is emphasized that the overarching objective for future yellow phosphorus production technology is to achieve energy efficiency and optimize the utilization of carbon resources.Significantly,the advancement of technologies for utilizing low-grade phosphate rock and recovering phosphorus from waste with low phosphorus content holds immense importance in realizing the sustainable development and utilization of phosphorus resources.
万方数据
维普
