A Laboratory Study Of In-situ Uranium Mining Of A Sandstone Type Uranium And Hydrometallurgy Technique

Through comprehensive studies including analytical test, static leaching exper-iments and dynamic leaching experiments to finding out the leaching efficiency ofthe drill cores of the uranium in various conditions, we determined the kind of l-eaching agent and oxidant and the methods of leaching, which were satisfactoryfor the hydrometallurgy of the uranium deposit. In our report, it was gave a deta-iled description that the influence degree of seam distribution and the optimum l-eaching agent formulation on the leaching efficiency of the drill cores, and the r-easonable geological technical parameters were issued. Based on the actual conce-ntration of the leachate, we got the related parameters of hydrometallurgical proc-ess by adopting pre-concentration and separation via ion exchange resin method.This may provide references for the design of leaching program and uranium rec-overy technics in the field.The studies found that the uranium was leached efficiently by adopting mixed alkali(sodium carbonate plus sodium bicarbonate) or stratum water in which carbon dioxidedissolved as a leaching agent, oxygen as a oxidant. The leachate was pass through packedfixed bed with201×7resin, and the effluent was precipitated using sodium hydroxide.By using the above mentioned process, the beneficial result of economy and society waswell got, while the satisfactory recovery rate was got.