Qinghai Qaidam Basin is the concentrated distribution area of salt lake resources in China. With potassium, sodium, magnesium, lithium and other large-scale cationic resources comprehensive development and utilization, it is needed to solve the use of large anion “chlorine”, namely “chlorine balance” problem which is the problem of relationship between salt lake development and circular economy. In this study, industrial solid waste- fly ash (Fly Ash) is used as the carrier, and salt lake by-product “chlorine”—hydrochloric acid is used ,and then (AlCl3) high chlorine content of 75% or more was prepared by calcination activation, acid leaching and alkali leaching. And through XRD, SEM, TG-DSC test characterization methods, the high load chloride samples were characterized analysis. Then the calcination activation, acid leaching and other processes were analyzed and optimized, and the best high-chlorine material preparation process was obtained. Thus further the “chlorine balance” problem was solved, and at the same time was to achieve the purpose of “turning waste into treasure”. |