ABSTRACT This study examines the extraction of beryllium and aluminium from a Nigerian beryl ore using Cyanex®272 in kerosene from an aqueous sulphate pregnant solution. Parameters such as extractant concentration and equilibrium pH that dictates the extraction yield were studied. Under the following conditions: temperature 27 ± 2°C, phase ratio 1׃1, about 45.50 and 46.76% of beryllium and aluminium were extracted by 0.15 mol L−1 Cyanex®272 concentration within 30 min. However, the extraction yield of beryllium and aluminium was increased to 91.68% and 97.89% at equilibrium pH of 3 and 4, respectively, for beryllium and aluminium at 27 ± 2°C. A 0.05 mol L−1 H2SO4 solution was found to be adequate for the stripping of about 99.00% Be and 95.40% Al from the loaded organic phase. The pure solutions containing metal ions were accordingly beneficiated to obtain beryllium and aluminium compounds of industrial values.

中文翻译：

---

从绿柱石矿石中提取铍和铝的平衡条件以优化工业铍化合物生产

摘要 本研究考察了使用 Cyanex®272 从硫酸盐水溶液中的煤油中提取尼日利亚绿柱石矿石中的铍和铝。研究了决定提取率的参数，例如提取剂浓度和平衡 pH 值。在以下条件下：温度 27±2°C，相比 1׃1，在 30 分钟内通过 0.15 mol L−1 Cyanex®272 浓度提取约 45.50 和 46.76% 的铍和铝。然而，铍和铝在 27±2°C 下的平衡 pH 值为 3 和 4 时，铍和铝的提取率分别提高到 91.68% 和 97.89%。发现 0.05 mol L-1 H2SO4 溶液足以从负载的有机相中汽提约 99.00% Be 和 95.40% Al。