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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >Polythionate formation during uranium recovery from sulphide flotation concentrate
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Polythionate formation during uranium recovery from sulphide flotation concentrate

机译：硫化浮选浓缩物中铀烃中的聚硫代氨酸形成

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摘要

Uranium recovery by resin-in-pulp (RIP) from sulphide-bearing material was found to be adversely affected by polythionate formation due to partial oxidation of sulphide minerals. Folythionates are loaded more selectively by the conventional strong-base resins used at uranium plants.A study was undertaken to identify whether polythionates are formed during upstream processing, leaching, or ion exchange recovery steps. It was found that polythionate formation could be minimized by shortening of the leach time, optimizing oxidant and acid addition, minimizing delay between leaching and RIP, and maintaining the neutralization and adsorption retention times as short as possible. These insights could prompt the development of mitigation strategies on commercial plants to reduce or avoid the formation of polythionates and the adverse impact it has on uranium recovery.
机译：通过硫化物矿物的部分氧化，发现来自含硫化物材料的树脂纸浆（RIP）的铀酸溶液（RIP）受到多分子的形成受到不利影响。 通过在铀植物的常规强碱树脂中更具选择性地装载叶酸酯。进行研究以鉴定在上游加工，浸出或离子交换恢复步骤期间是否形成多硫酸酯。 发现可以通过缩短浸出时间，优化氧化剂和酸添加，从而最小化浸出和撕裂之间的延迟，并尽可能地保持中和和吸附保留时间来最小化多分子形成，尽可能短。 这些见解可以促使商业植物的缓解策略的发展，以减少或避免形成多细胞素和对铀恢复的不利影响。

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