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1、离子型稀土资源高效利用技术摘 要：本研究是针对我国离子型稀土产业环境污染问题，提出采用无氨浸矿与无皂化萃取分离方案，实现离子型稀土资源绿色高效提取、清洁分离。课题从离子型稀土矿山渗流场理论及应用、离子型稀土数字矿山、离子型稀土新型浸矿剂、无氨氮排放-水系循环稀土洁净萃取分离技术集成三个主要方面展开研究。 通过近两年研究，在离子型稀土矿山渗流场理论及应用方面，已建立离子型稀土原地浸矿开采的一维稳定渗流模型，确定了单宽渗流量与渗透系数和特征参数C1的相关性，定量描述了特征参数C1的绝对值随底板坡度 、注 水 h1、水 L关系 了离子型稀土矿土浸 的 度特性及 理性 随 化 产 的了渗流过 及土渗透
2、系数随水 度的 化 。 通过集稀土矿山矿的地 资currency1和“实，建立矿矿地 数fifl， 矿山地地 模型、矿实模型提 本数fi fi建立地模型、”模型、矿模型， 本实现矿山三维地 建模，实的 地模型、地、矿 建了矿模型和模型，实现了矿建模及量 了一 无注 的 方案，对 注 实 性 了论 确定数fi采集方案和 ，建立了离子型稀土矿山坡 性 模型 定了稀土 矿开采方案 提出实 方案和 效分 方案、 相 模实 方案。 通过 性 的与实 ，离子型稀土矿浸出流出 ， 出用 离子型稀土矿山的无氨 浸矿剂，稀土浸出率达100%，且成本低，实现了矿山资源提取无氨化。 利用P507萃取稀土、N235萃
3、取酸的特性，了P507-N235无皂化萃取分离稀土方案。优化 的有机相成分 ：30-35%P507+25-30%N235+0-20%?旎?煤油+45-25%环己烷。定了 萃取系稀土萃 的组成 REA3？（R3N？HA）？3R3NHCl 研究了 萃取剂对稀土元 的萃取分离 ， 明了系中稀土元 呈“正序萃取”，符“镧系缩” 则。 了 萃取剂负载稀土反萃取研究，发现水 反萃负载有机相中的轻稀土.利用草酸沉淀， 备出砂状稀土化 。 本文采集 络，版归原作者所有 更多资currency1http:/www.mm8.pub/关键词：离子型稀土 氨氮 数字矿山 浸矿剂 萃取分离 无皂化 Abstract：T
4、his program， focusing on the pollution problem of IRE industry， proposed non-ammonium leaching technology and non-saponification extraction-separation process which have realized cleaner production and high-efficiency extraction of IRE. With more than 2 years of research， an one-dimensional steady s
5、eepage model for in-situ leaching and extraction of IRE was established.Thus， the relationship of the unit rate of seepage flow， permeability coefficient and feature parameter C1 has been revealed. The effects of bottom-board gradient， injection-well pressure h1 and horizontal interval L on the feat
6、ure parameter C1 have been quantitatively described. The effect of time on the strength characteristics and physical properties of IRE mine after leaching has been analyzed. Moreover， the mechanism of microparticle migration and the change rule of permeability coefficient with hydraulic gradient in
7、seepage process have been mastered. Based on the supplemental measured data and collected geologic information of different mining area， geological database ofall IRE ore deposit was established. Thus， the database could provide basic data for topographical and hypostatic models which can help to bu
8、ild three-dimensional geological model and visually display the structure of the ground surface， stratum and ore body. Furthermore， block model and ore grade model were set up to calculate ore reserve. The IOT scheme of automatically controlledflooding with wireless sensor was designed， and the feas
9、ibility of intelligent flooding was also proved. Non-ammonia compound agent used to leach RE was selected from several soluble salts by comparing with the leaching solution effluent curves during the process of leaching RE. Comparing with ammonium sulfate， the non-ammonia compound agent has lots of
10、advantages such as high RE leach yield and low cost. So， non-ammonia extraction of RE from the ores has been realized. Non-saponification extraction and separation of RE used P507 and N235 as extractant was developed based on the characteristics of P507 extractingRE and N235 extracting acid from the
11、 leaching solution. During the extracting process， Stripping of RE from the loaded organic phase was studied. Results showed that light RE in the loaded organic phase can be stripped with water. Arenaceous RE compound was prepared using RE oxalic acid precipitation as material. Key words：Ion-absorbed rare earth ore ammonia-nitrogen digital mine leaching reagent extraction-separation non-saponification 阅读文链接（需实名注册）：http：/
