A method for hydrometallurgy of strongly weathered and strongly oxidized glutenite uranium ore

Abstract

The invention relates to a hydrometallurgy method of strongly weathered and strongly oxidized glutenite uranium ore. Only crushing and sieving processes are used to obtain 1 mm glutenite uranium ore samples, and the leaching test without reagents is carried out on the prepared ore samples, and the uranium content analysis is carried out on the filtrate and tailings, and the leaching rate of liquid meter and slag meter is calculated , using 201×7 resin to recover uranium in the leach solution, using NaCl and H 2 SO 4 Carry out leaching to obtain a qualified solution, and then use flake NaOH to precipitate uranium in the qualified solution to obtain the "111" product, and the precipitation mother solution is recycled to prepare the eluent. The method reduces the ore grinding process, realizes closed-circuit recycling of the process solution, and improves the recovery rate of uranium and the purification degree of products. The use of reagent-free leaching avoids the use of chemical reagents such as sulfuric acid, realizes no waste water discharge, saves costs, and protects the environment.

Description

technical field

[0001] The invention relates to a method for hydrometallurgy of uranium ore, in particular to a new hydrometallurgy process for strongly weathered and strongly oxidized glutenite uranium ore without grinding process, reagent leaching, and waste water discharge. Background technique

[0002] The conventional hydrometallurgy process of uranium ore includes ore breaking, ore grinding, stirring and leaching, solid-liquid separation, enrichment and purification, precipitation and drying and other technological processes. Due to the high energy consumption of ore grinding and the high acid consumption of stirring and leaching, only when the grade of uranium ore is high, the conventional hydrometallurgy process can obtain certain economic benefits.

[0003] However, the grade of many uranium ores in nature is low, and the ore structure, uranium occurrence state, uranium valence state, mineral composition and acid content are different. It is difficult to obtain econ...