Method for determining content of effective extraction agent in three phases of copper extraction process

Abstract

The invention relates to the technical field of analytical testing, in particular to a method for determining the content of an effective extractant in three phases of a copper extraction process, which comprises the following steps: taking a glass sand core funnel vacuum suction filtration device, pouring a fully mixed three-phase sample into a glass sand core funnel, starting the vacuum suctionfiltration device for suction filtration, and after the sample in the glass sand core funnel is dried, cleaning filter residues in the glass sand core funnel for three times by using an accurately weighed extracting agent solvent; transferring the mixture of the organic phase and the water phase in the suction flask into a separating funnel, standing for layering, separating the water phase, and weighing the weight of the organic phase; preparing a standard organic phase with the same concentration as a production system by using a copper extraction agent and a solvent thereof, and respectively preparing the standard organic phase and the maximum copper-loaded organic phase of the sample by using the same conditions and steps.According to the method, the maximum copper load does not need to be accurately measured, and only the ratio of the maximum copper load capacity in the sample organic phase to the maximum copper load capacity in the standard organic phase is measured, the contentof the effective extraction agent can be indirectly and quickly calculated.

Description

technical field [0001] The invention relates to the technical field of analysis and testing, in particular to a method for measuring the content of an effective extractant in three phases of a copper extraction process. Background technique [0002] In the extraction process of copper, due to various reasons, an emulsified layer or dirt is often formed between the organic phase and the water phase. Its formation will not only hinder the interaction between the organic phase and the water phase during the extraction process, but also affect the copper ion. The equilibrium between the two phases is the extraction rate of copper. The dirt between the phases is mainly composed of organic solvents, aqueous solutions and solid particles, forming a stable "oil-water-solid" three-phase emulsion (hereinafter referred to as "three-phase"), which exists It is between the interface and diffuses to the two phases, so it is also called interface floc or interface dirt, etc. Its existence ...

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Problems solved by technology

[0002] In the extraction process of copper, due to various reasons, an emulsified layer or dirt is often formed between the organic phase and the water phase. Its formation will not only hinder the interaction between the organic phase and the water phase during the extraction process, but also affect the copper ion. The equilibrium between the two phases is the extraction rate of copper. The dirt between the phases is mainly composed of organic solvents, aqueous solutions and solid particles, forming a stable "oil-water-solid" three-phase emulsion (hereinafter referred to as "three-phase"), which exists It is between the interface and diffuses to the two phases, so it is also called interface floc or interface dirt, etc. Its existence slows down the phase separation speed, makes phase separation difficult, and at the same time increases the loss of extractant due to its entrainment large, increasing production costs

[0003] In order to evaluate the loss of extractant caused by three-phase entrainment, it is usually estimated by the method of extractant dosage balance in the production system. At present, there are no reports or patents on the method of directly measuring the effective extractant content in the three-phase. Similar reports include copper extraction. Determination of active ingredients in the agent (determination of aldoxime and ketoxime in the hydrometallurgical LIX984N copper extractant by high performance liquid chromatography), the method uses high performance liquid chromatography to determine the active ingredients aldoxime and ketoxime in the hydrometallurgical LIX984N copper extractant Ketoxime, but not suitable for the determination of effective extractant content in the three-phase, therefore, a method for determining the effective extractant content in the three-phase copper extraction process is proposed for the above problems

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