Composition for alkaline leaching of clay type lithium ore and lithium extraction method

The invention relates to a composition for alkaline leaching of clay type lithium ores and a lithium extraction method. The composition for alkaline leaching of the clay type lithium ores comprises the following components, an alkaline solution and calcium oxide; the alkaline solution comprises sodium hydroxide and aluminum oxide; the caustic ratio alpha K of the alkaline solution is 2-6. According to the composition for alkaline leaching of the clay type lithium ore, through reasonable design of the leaching reagent components and utilization of the synergistic effect of all the components in the components, the good leaching effect on the clay type lithium ore is achieved, the leaching rate of lithium can be remarkably increased, leaching of iron and other impurities is avoided, and preparation of high-purity lithium carbonate is facilitated. 本发明涉及一种用于黏土型锂矿碱浸的组合物及提锂方法，所述用于黏土型锂矿碱浸的组合物包括；碱性溶液和氧化钙；所述碱性溶液包括氢氧化钠和氧化铝；所述碱性溶液的苛性比αK为2-6。本发明提供的用于黏土型锂矿碱浸的组合物，通过对浸出试剂组分的合理设计，利用组分内各成分的协同效果，实现对黏土型锂矿良好的浸出效果，可以显著提升锂的浸出率，避免铁