Traditional inorganic chemicals are processed separately with independent mineral resources.The production resources and energy fail to follow the production principle of circular economy recycling,recycling and graded utilization,and the efficiency of energy consumption in the whole life cycle is no high.In order to achieve carbon peaking,carbon neutralization and meet the needs of new industries,it is necessary to develop new technologies and processes of inorganic salt chemical resources coupling low-carbon.On the basis of the advanced process technology mode of coupling titanium dioxide and wet process phosphate with titanium,phosphorus and sulfur resources,taking the energy storage material lithium iron phosphate as an example,it was proposed to couple ilmenite,apatite and limonite and produce energy storage materials of iron phosphate and lithium iron phosphate products according to the green process technology route of “element economy”.The challenges of energy conservation and carbon reduction faced by phosphorus chemical industry,titanium chemical industry and lithium chemical industry in the upstream of lithium iron phosphate three elements,as well as the opportunities and market development prospects of coupling new technology innovation were discussed.