Abstract

At elevated temperatures (130 and 180°C) in hydrothermal autoclave conditions, the possibility of deep extraction of noble metals from poor intermediate products of refining (or affinage) production was investigated. The conditions (temperature, processing conditions) of leaching of impurity elements into the solution are determined, under which the uncontrolled distribution of precious metals according to the technological scheme is prevented and their concentration in the solid phase is ensured. It was found that the processing of the poor intermediate product in two stages (alkaline and acidic) under autoclave conditions makes it possible to increase the total content of noble metals in the solid phase from 0.5 to 17.5 wt %, which allows returning this product to the refining cycle. In this case, more than 99 wt % tellurium passes into a solution that does not contain impurities of noble metals and is suitable for further processing.

中文翻译：

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在高压釜条件下从劣质的炼油中间产品中浸出杂质

摘要

在热液高压灭菌条件下，在升高的温度（130和180°C）下，研究了从不良的精制（或精炼）生产中间产品中深度提取贵金属的可能性。确定将杂质元素浸入溶液中的条件（温度，处理条件），在该条件下，可以防止根据工艺方案控制贵金属的不受控制的分布，并确保其在固相中的浓度。发现在高压釜条件下将不良中间产物分两个阶段（碱性和酸性）进行加工使得可以将固相中贵金属的总含量从0.5重量％增加到17.5重量％，这使得该产物可以返回到精炼周期。在这种情况下，