期刊论文

Ding, De-Xin

英文

Hydrometallurgy

0304-386X

2013

136

85-92

10.1016/j.hydromet.2013.03.009

Uranium contained in the samples consists of U (IV) and U (VI). The ratio between U (IV) and U (VI) is about 1:1. As a result, the leached uranium included two parts. One part came from the oxidation dissolution of U (IV), and the other part, the dissolution of U (VI). These tests used sulfuric acid to extract uranium from the uranium ore. In the sulfuric acid solution, the U (VI) and its compounds are easily dissolved but the U (IV) is insoluble (Avvaru et al., 2008). However, since there is

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The varied particle size distribution of uranium ore for heap leaching, with its particle sizes ranging from 0 to 9 mm, is taken from a uranium mine in South China. Five uranium ore samples with the fractal dimensions (D) of particle size distribution of 1.6, 1.8, 2.0, 2.2 and 2.4, respectively, are further prepared by mixing different weights of the uranium ores for the size fractions of + 8/- 9, + 7/- 8, + 6/- 7, + 5/- 6, + 4/- 5, + 3/- 4, + 2/- 3, + 1/- 2, + 0.5/- 1 and - 0.5 mm, respectively. The five samples are leached in columns to investigate the influences of the fractal dimensions of...