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A method of Baotou mixed rare earth concentrate leaching was investigated. According to the principle of complex leaching, the quadratic orthogonal regression experiment was used to investigate effect of six factors. An optimal condition of low energy and environment friendly was determined as follows: HCl acidity is 4 mol·L−1, AlCl3 concentration is 2 mol·L−1, reaction temperature is 85 °C, reaction...
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