CAJ | 학술논문

对河南某地低品位含锂粘土矿进行了试验研究。根据该矿石的工艺矿物学特性，采用原矿（－2 mm）焙烧?常温浸出流程，最优试验条件为：焙烧温度800℃，焙烧时间2 h，硫酸钙／原矿比0．7，氟化钙／原矿比0．2，硫酸钠／原矿比0．2，浸出时间1 h，浸出温度20℃，液固比3∶1，硫酸浓度50％，在此条件下锂浸出率为95．32％。在参考槽浸最佳条件的基础上进行了柱浸，可以获得锂浸出率为91．78％的结果。
대하남모지저품위함리점토광진행료시험연구。근거해광석적공예광물학특성，채용원광（－2 mm）배소?상온침출류정，최우시험조건위：배소온도800℃，배소시간2 h，류산개／원광비0．7，불화개／원광비0．2，류산납／원광비0．2，침출시간1 h，침출온도20℃，액고비3∶1，류산농도50％，재차조건하리침출솔위95．32％。재삼고조침최가조건적기출상진행료주침，가이획득리침출솔위91．78％적결과。
A low?grade lithium?bearing clay from Henan Province was taken for study. According to the mineralogical characteristics, a process of roasting followed by leaching at normal temperature was adopted in the test with the ore at size of -2 mm. Under the following optimal testing conditions:roasting at 800℃ for 2 h with calcium sulfate/ore ratio at 0.7, calcium fluoride/ore ratio at 0.2 and sodium sulfate/ore ratio at 0.2, followed by the leaching at 20℃ for 1 h with liquid?solid ratio at 3∶1, sulfuric acid concentration of 50%, the leaching rate of Li reached 95. 32%. Then a column leaching test was conducted with the best condition of tank leaching as reference, resulting in the leaching rate of Li up to 91.78%.