In-situ leaching and leachate treatment method with co2 and o2 added to heavy carbonic acid type groundwater

Abstract

The invention provides a method for adding CO2 and O2 in-ground leaching in heavy carbonic acid type ground water and leachate, which comprises the following steps: (1) adding CO2 and O2 into the leaching solution to leach uranium underground to obtain uranium leachate; (2) adding uranium to the uranium Add CO2 to the leaching solution to adjust the pH value of the uranium leaching solution, and then filter it mechanically; (3) perform ion exchange adsorption on the uranium leaching solution in the adsorption tower; (4) perform leaching on the saturated resin to obtain Cl-type poor resin and leaching qualified solution (5) transforming the Cl-type poor resin with the adsorption tail liquid; (6) acidifying the eluting qualified liquid, adding alkali and aging precipitation at room temperature, washing, filtering and drying the precipitated slurry to obtain uranium products. The method of the invention only adds O2 and CO2 without adding other reagents, which will not cause blockage of ore beds and pollution of underground water; at the same time, the preparation process is integrated, the operation is simplified, and the cost is saved.

Description

Adding CO to bicarbonate groundwater 2 and O 2 In-situ leaching and leachate treatment methods technical field The present invention relates to a kind of in-situ leaching mining uranium leaching method and leachate treatment method, be specifically related to a kind of in heavy carbonic acid type A method for extracting uranium by in-situ leaching with adding CO2 and O2 to groundwater and a method for treating leachate. The technical feature lies in the novelty of lean resin after leaching The transformation method and the technology of reusing the transformed wastewater after reverse osmosis treatment. Background technique Ground leaching mining uranium (in situ leaching mining uranium) is that the liquid injection well drilled into the ore-bearing layer from the surface will be prepared in a certain proportion. A good leaching solution is injected into the ore layer, and the injected leaching solution contacts with the useful components in the ore to undergo...

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Problems solved by technology

Easy to produce calcium carbonate and calcium sulfate precipitation and blockage

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