Recovery And Treatment Of Th From RE Ore Of Baiyunebo Deposit By Liquid Membrane Emulsion Technology

The total prospective reserves of ThO₂ in Baiyunebo deposit, located in Baotou, Inner Mongolia, China, are larger (1,050,000.00 tons which could meet the need of China's nuclear energy resources for 5,000-10,000 years) , are lower grade (ThO₂0.2⁰.38% ) and higher harm (radioactive contamination of waste water and waste industrial residue) .But up to now it has created nothing but radioactive contamination, without any recovery use of it.In the present study, a new efficient technology with low cost and goodselectivity------Liquid Membrane Emulsion Technology (LMET) ------was used, inaccordance with the characteristics of LMET and thorium from Baiyunebo deposit, to recover and treat thorium from Baiyunebo deposit and applied to the recovery and separation of thorium conducted in Baogang Rare Earth Science and Technology Co. Ltd., Inner Mongolia, which achieved the goal of both comprehensive exploitation and rational use of Th resources, and the preservation of Th resources and environment. The aim of the study is to make exploitive use of radioactive pollution wastes as secondary resources, which can effectively harness the radioactive wastes (waste water and waste residue in industry) and reasonably recover the useful elements of high value, converting wastes into useful materials, lessening the radioactive harm caused by nuclear radiation pollution, purifying environment, maintaining the ecological balance and benefiting both the country and the people. So it could be believed that the present study can bring about considerable economic returns and tremendous social benefitsIn this doctoral dissertation, the experiment in which thorium was recovered from simulated Th solution of different concentrations and those in which thorium was recovered from the real Th solution of different concentrations were respectively performed on the principles of liquid membrane emulsion method. The real Th solution experiments include those of extracting thorium from rare earth leaching solution, those of recovering thorium from RE-Fe-Th dregs leaching solution and...