Unconventional uranium polymetallic ore mineral green separation method

Abstract

The invention discloses a unconventional uranium polymetallic ore mineral green separation method, and belongs to the field of a mineral separation method. The unconventional uranium polymetallic ore mineral green separation method comprises the following steps of: (1) pretreatment; (2) coarse grinding treatment: transferring into a ball grinding mill to carry out coarse grinding treatment to obtain a coarse material; (3) fine grinding treatment: continuously carrying out fine grinding treatment in the ball grinding mill to obtain a fine material; (4) screening treatment: screening out a powder sample with the particle size of over 600 meshes from the fine material; (5) air-drying treatment: transferring into an air dryer to carry out normal-temperature air-drying treatment; (6) multi-stage parallel centrifugal treatment; and (7) recovery treatment. By pure physical technologies of ball grinding mill combination, parallel-serial high-speed centrifugal separation and the like, the unconventional uranium polymetallic ore mineral green separation method solves the problems that in unconventional uranium resources, uranium and associated metal elements are difficult to separate and the leaching rate is low; the investment cost is saved; the environmental pollution is reduced; and a new technical support is provided for comprehensive development and utilization of the uranium and the associated metal elements.

Description

Technical field[0001]The present invention belongs to the field of mineral separation methods, and in particular, it is foregoing unconjugated uranium multi-metal ore mineral green separation method.Background technique[0002]In the black rock system, it is an organic carbon (C-organic ≥1%) and the sea-phase fine deposition rock of the sulfide. It is mainly due to the dark gray black silicon rock, carbonate, and muddy rock ( Layered Crystal Rock) and its metamorphic rock composition (Van Dao et al, 1987) (Table 1). In recent years, people have begun to pay attention to the economic value of the black rock system, which is mainly important mineral layers such as metal minerals such as U, Mo, Ni, V, and PGE (Pasava, 1993; JIANG ET Al., 2006; Mao Jingwen, 2002; Vander Low Wait, 2004; Paint, Equation, 2012). With the deepening of the degree of exploration, uranium mineralization or deposits related to the black rock system at home and abroad have also been reported, such as: the world fa...

AI Technical Summary

Problems solved by technology

Although the use of microbial heap leaching technology has the advantages of less ore handling, low investment cost, low acid consumption, less environmental pollution, and simple process flow, etc., in microbial heap leaching technology, there are various types of microorganisms, difficult cultivation and complex leaching environment ( High content of heavy metals, presence of toxic arsenic ions, high temperature, etc.) severely restrict the leaching rate, so microbial heap leaching technology has only achieved certain results in laboratories and field semi-industrialization

Therefore, in the process of extracting unconventional uranium resources in black rock series, the use of solvent extraction will result in high production costs, difficulty in industrial production, and great damage to the environment.

[0007] To sum up, at present, the development of unconventional uranium polymetallic resources is very important at home and abroad, but the current leaching technology cannot meet the needs of the industry, so it is urgent to develop new extraction technologies

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