CONSTRUCTION AND APPLICATION OF COMPREHENSIVE EVALUATION INDEX SYSTEM OF BRINE LITHIUM RESOURCES EXPLORATION AND DEVELOPMENT
This paper,based on principles of systematicness,accessibility and easy operability of indicators selection,selects 19 indicators including Mg/Li in mineralization conditions of brine lithium deposits from geology,mining,economics and environmental constraints to establish a comprehensive evaluation index system of brine lithium resource exploration and development,which can offer references for comprehensively evaluating the same kind of lithium deposit exploration and development.Analytical Hierarchy Process(AHP)used to give weights to indicators is applied to evaluate the exploration and development conditions of five brine lithium deposits in Tibet,including Zhabuye saline.The primary factor impacting exploration and development of brine lithium deposits is geology,characterized by their geology,water chemistry and resources occurrence,followed by the secondary factors environmental constraints and economy.Yiliping saline brine lithium resource in Qaidam basin has a highest score in exploration and development,at 87.69,followed by Bieletan district in Qarhan saline at 87.50,then by Zhabuye saline in Tibet at 85.02,Jiangling depression in Jianghan basin at 73.53,and Mahai saline at 56.96.This evaluation which has been validated by its operability and feasibility,reveals the reality of brine lithium deposit exploration and development under the current economic situation,which offers references for brine lithium resources exploration,investment and development and for economic planning.
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