Saponifying agent for organic rare-earth extraction agents and application method of saponifying agent

Abstract

The invention discloses a saponifying agent for organic rare-earth extraction agents and an application method of the saponifying agent. The saponifying agent is prepared from sodium hydroxide and sodium carbonate and can be applied to saponifying of organic rare-earth extraction agents such as P507 and the like. According to the saponifying agent and the application method, no ammonia-nitrogen sewage is produced, the production cost is low, the operation is convenient, the extraction efficiency is high, no third phase is formed in the extraction process, and the obtained product has the high purity.

Description

technical field

[0001] The invention relates to the technical field of rare earth organic extraction, in particular to the technical field of the rare earth organic extraction method comprising the step of saponification of an organic extractant. Background technique

[0002] In the process of rare earth production, in most cases, different rare earth elements exist in the form of a mixture, and only when they need to be separated in the end, they are extracted separately through different processing methods.

[0003] At present, the most mature technology and the most widely used rare earth separation method is the organic extraction method, that is, the different rare earth elements in the rare earth mixture are separated by organic extractants. In the process of organic extraction, the organic phase composed of the organic extractant and the rare earth mixture will continue to undergo ion exchange, resulting in a continuous decline in the extraction capacity of the extrac...

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