Study On The Separation And The Enrichment Process Of The Valuable Metals (Li、Mn And Rare Earths)

The separation and the enrichment process of the valuable metals (Li、Mn and rare earths) is studied in this graduation thesis, and the concrete content includes four parts as follows:1.We have made a literature review on the development and research progress of the separation and the enrichment process of the valuable metals (Li、Mn and rare earth) from the mixed systems in the wet methods of the metallurgy process.2. The technological process of extraction of lithium carbonate from saline lake, which is located in the DangXiong of Tibet, and preparation of battery grade lithium carbonate is studied in the section.The products reach the battery grade lithium carbonate standards, which is made through the process. The technological process is help to enhance our country’s resources development and environment reasonable, and it has a high application value in the industry.3. Taking the impurity liquid of P204back-extraction in cobalt system as the object of study, we have researched the separation and enrichment process of valuable metals, and then established an efficient process of low cost, in which the valuable metals can be comprehensive utilized. This research included three parts is as follows:(1) Study on the preparation of the high purity manganese carbonate and the technology research of enriching recovery copper、cobalt and zinc using the step-by-step precipitation purification from the solution.(2) Study on the comprehensive utilization research of all kinds of the valuable metals in the solid residue,which is rich in copper and manganese.(3) Study on the process of establishing the new transformed system and the separation process research of the valuable metals, taking the appendage solution of P204as the material.4. The copolymers of (Z)-4-oxo-4-phenoxyl-2-butenoic acid with styrene (PSO) and their macromolecular luminous lanthanide complexes (Eu and Tb) have been synthesized and characterized by means of GPC, elemental analysis, FT-IR, X-ray powder diffraction and spectral analysis. The adsorption behavior of the ligand towards La3+and Y3+have been studied in detail. All the factors affecting the recovery were studied, such as the excessive rate of the precipitant the pH value of the solution、the temperature、the reaction time and so on. In addition, the adsorption rate constant, thermodynamic parameters, the adsorption in the process and the desorption with process are studied. Finally, the best technology condition of recycling the rare earth ions has been brought up.The structure of the complex is as follows:...