稀土熔盐渣中稀土、锂及氟多有价组分梯级分离回收技术科学数据集
收藏资源简介：
针对目前典型稀土熔盐渣锂、氟组分未利用等资源转化回收效率低的问题，研究开发了稀土熔盐渣中稀土、氟及锂多组分高效提取技术，渣中钕、镨、钆、锂、氟的浸出率分别为95.83 %、96.55 %、93.06 %、95.52 %、94.85 %， 明确了提取过程中稀土、氟及锂元素的迁移走向；研发了酸浸液中稀土高效分离技术；确定了溶液中氟资源化合成冰晶石的工艺优化条件，制备的高分子比冰晶石Na、Al、F的含量分别为30.66 %、12.58 %、56.0%，总含量为99.24%，产品中nNa: nAl=2.86；基于脱氟后溶液成分，开发了碳酸锂合成技术，通过净化除杂工艺路线及优化沉锂条件制备碳酸锂，制备的碳酸锂纯度达到99.69%，满足电池级碳酸锂的纯度要求，实现稀土、氟及锂多有价组分全量化综合回收利用。主要记录了稀土熔盐渣、焙烧渣、浸出液中稀土、氟、锂的测定、冰晶石、碳酸锂成分的测定，由江西理工大学测试人员按照取样要求进行现场取样后交由第三方进行检测分析，对原始数据利用excel、origin等数据处理软件进行可视化、图形化处理。数据量为7.2MB。
Aiming at the problems of low resource conversion and recycling efficiency such as the non-utilization of lithium and fluorine components in typical rare earth molten salt slags at present, an efficient extraction technology for multi-components including rare earth, fluorine and lithium in rare earth molten salt slags was researched and developed. The leaching rates of neodymium, praseodymium, gadolinium, lithium and fluorine in the slag were 95.83%, 96.55%, 93.06%, 95.52% and 94.85% respectively, and the migration trends of rare earth, fluorine and lithium elements during the extraction process were clarified. An efficient rare earth separation technology from the acid leaching solution was developed; the process optimization conditions for the resourceful synthesis of cryolite from fluorine in the solution were determined. The contents of Na, Al and F in the prepared high molar ratio cryolite were 30.66%, 12.58% and 56.0% respectively, with a total content of 99.24%, and the nNa: nAl ratio in the product was 2.86. Based on the composition of the defluorinated solution, a lithium carbonate synthesis technology was developed. Lithium carbonate was prepared through a purification and impurity removal process route and optimized lithium precipitation conditions, with the purity of the prepared lithium carbonate reaching 99.69%, which meets the purity requirements of battery-grade lithium carbonate. The full-scale comprehensive recycling and utilization of multi-value components including rare earth, fluorine and lithium were realized. This dataset primarily documents the determination of rare earth, fluorine and lithium contents in rare earth molten salt slags, roasted slags and leaching solutions, as well as the compositional analysis of cryolite and lithium carbonate. Field sampling was conducted by testers from Jiangxi University of Science and Technology in accordance with standard sampling requirements, and the sampled materials were then sent to a third-party institution for testing and analysis. The raw data was visualized and graphically processed using data processing software such as Excel and Origin. The total size of the dataset is 7.2 MB.
