[Global Lithium Mineral Resources] The world’s lithium resources are extremely abundant, according to the U.S. Geological Survey. 1999 Annual statistical report, according to Li20 According to estimates, the globally confirmed reserves of lithium resources are... 730 Ten thousand tons, reserve base 2020 Ten thousand tons ( Excluding countries such as China, Russia, Argentina, Namibia, and Portugal. )。

　　Lithium resources can be categorized into two types: lithium in ore and lithium in brine. They are primarily found in salt lake brines and granitic pegmatite deposits, with lithium in salt lake brines accounting for a significant portion of the world's lithium reserves. 66% And the reserve base 80% The above-mentioned has now become the world’s primary source of lithium.

　　[China’s Lithium Mineral Resources] China boasts abundant lithium resources, with deposit types categorized into endogenic deposits, exogenic deposits, and a small number of clay-type deposits, ancient rock-salt deposits, and brine deposits from oil and gas fields. Among the endogenic deposits are granitic, pegmatitic, pneumatolytic-hydrothermal, and hydrothermal types. ; Exogenous deposits are primarily composed of Quaternary salt lake brine deposits and underground brine deposits. Currently, the deposits of industrial significance and potential industrial significance include pegmatite-type, granite-type, and salt lake brine-type deposits.

　　Lithium deposits of pegmatite type in China are commonly found in the transition zones between geosynclinal fold belts and uplifted or depressed areas of cratons. The igneous bodies associated with these deposits are mainly granites from the Hercynian and Yanshan periods. The deposits consist of clusters and belts of pegmatite veins, which often exhibit symmetrical structures and concentric zoning patterns characterized by specific mineral assemblages. The deposits are primarily enriched in lithium and beryllium, with accompanying minerals including niobium, tantalum, rubidium, and cesium. Lithium-bearing minerals include spodumene, as well as lepidolite and ferro-litio-mica. Ore grades are characterized by... 0.8% ~ 1.4% (Li2O) Most of these deposits are large to medium-sized and have long been the primary targets for lithium mining in China. Such deposits are mainly distributed in Xinjiang, Sichuan, Henan, Hunan, and Fujian, with some occurrences also found in Fujian. It is worth noting that significant potential for lithium exploration exists across vast regions including Altay in Xinjiang, western Sichuan-Yunnan, the Western Kunlun Mountains, and the Eastern Qinling Mountains.

　　Granite-type lithium deposits, a type currently being developed and utilized in China, have spodumene as their ore mineral. Yichun, Jiangxi Province. 414 The mine is a typical representative of this type of ore deposit. Located in the Wugongshan Uplift area of the South China Fold Belt, the ore body is hosted at the top of Yanshan-period granitic plutons and consists of three types: completely weathered, partially weathered, and primary ore, with the primary ore being dominant. The ore minerals include columbite-tantalite, cassiterite with fine crystals, tantalum-bearing tinstone, and lepidolite. Tantalum is the primary mineral, while lithium is a coexisting mineral. Li2O Low taste ( Average 0.392% ) However, these deposits are large in scale and easy to mine and process. Currently, such deposits have been found only in Jiangxi, but there remains considerable exploration potential across the broader Nanling region.

　　Salt lake brine deposits are primarily found on the Qinghai-Tibet Plateau in China. Lithium deposits are modern, liquid-type salt lake minerals, occurring in intercrystalline brines, pore brines, and surface brines of salt lakes. Deposits dominated by lithium have relatively high lithium concentrations. Lithium chloride Content 2.2 ~ 3.1g/L It also coexists with potassium, magnesium, boron, salt minerals, and other resources. For example, the Taijiner Salt Lake in Qinghai is China’s largest brine deposit dominated by lithium. The lithium deposits associated with potash, magnesium salts, and boron ores have relatively low lithium concentrations but boast enormous reserves. The northern Tibetan Plateau represents another major salt-rich region in China. Preliminary investigations have identified numerous lithium-bearing salt lakes there, making it an important prospective area for the formation of brine-based lithium resources in China. Particularly noteworthy is the Zabuye Salt Lake in northern Tibet, which boasts enormous reserves and exceptionally high lithium grades. ( Metallic lithium 1 g/L) and, and Mg/Li The low ratio indicates that this is a high-quality lithium ore resource of great value. It can be said that the development and utilization of Zabuye Salt Lake will have a significant impact on our country. 21 It has a direct impact on the development of the lithium industry in the century.

　　In summary, China’s lithium resources have the following characteristics: ① China… 90% Lithium resources are distributed in the western regions. ; ② In contrast to overseas practices, the lithium ores currently mined in China are predominantly spodumene and lepidolite. Meanwhile, the brine lithium—whose reserves are abundant—has largely remained untapped at the industrial scale. The primary reason for this is that the brines from Qinghai’s salt lakes have relatively high magnesium content. Mg/Li Greater than average 40( Abroad, such as the Atacama Salt Flat in Chile, only... 6.47) As for the lithium extraction process from this type of brine with a high magnesium-to-lithium ratio, although it has undergone... 30 Despite years of experimental research, the process technology and equipment issues suitable for industrial-scale production have yet to be fully resolved. ③ The lithium ore deposits currently exploited and utilized in China have relatively low grades, and lithium mines... Lithium oxide The average grade is 0.8% ~ 1.4% and overseas lithium mines are generally located in... 1.4% The above (1.465% ~ 3.55% ) 。