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A method for highly stable naphthenic acid extraction and separation of high-purity yttrium

A naphthenic acid and extraction technology, applied in the field of hydrometallurgy, can solve problems such as instability in the operation stage of the clarification tank, inability to easily adjust operation parameters, and inability to reduce the purity of the product, so as to achieve stable production and reduce waste water production. The effect of reducing the consumption of pure water

Active Publication Date: 2017-06-06
CHALCO GUANGXI RARE EARTH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the flow fluctuates, if the organic flow rate is too large, it will easily cause the destruction of the sticky state of the mixing chamber. Therefore, the clarifier is unstable at the beginning of operation. When it is too low to be unqualified, the method of material reduction cannot be used to quickly improve the product purity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for highly stable naphthenic acid extraction and separation of high-purity yttrium is characterized in that an aqueous phase reflux pipe leading from the clarification chamber to the mixing chamber is added in the extraction section and the stripping section of the naphthenic acid box-type mixing-settling tank, The water phase flow rate entering the mixing chamber is controlled by adjusting the height of the water phase pipe, so that the ratio of each stage of the mixing chamber can be controlled to achieve controllability of the process of naphthenic acid extraction and separation of high-purity yttrium. The specific operations are:

[0019] When the box-type mixing and settling tank has just started to operate, and the flow rate of the organic phase and the water phase in the settling tank fluctuates greatly so that the mixing chamber is not in a viscous state, the water phase return pipe of the clarification chamber of this level is lowered to make the flow ra...

Embodiment 2

[0024] A method for highly stable naphthenic acid extraction and separation of high-purity yttrium is characterized in that an aqueous phase reflux pipe leading from the clarification chamber to the mixing chamber is added in the extraction section and the stripping section of the naphthenic acid box-type mixing-settling tank, The water phase flow rate entering the mixing chamber is controlled by adjusting the height of the water phase pipe, so that the ratio of each stage of the mixing chamber can be controlled to achieve controllability of the process of naphthenic acid extraction and separation of high-purity yttrium. The specific operations are:

[0025] When the box-type mixing and settling tank has just started to operate, and the flow rate of the organic phase and the water phase in the settling tank fluctuates greatly so that the mixing chamber is not in a viscous state, the water phase return pipe of the clarification chamber of this level is lowered to make the flow ra...

Embodiment 3

[0030] A method for highly stable naphthenic acid extraction and separation of high-purity yttrium is characterized in that an aqueous phase reflux pipe leading from the clarification chamber to the mixing chamber is added in the extraction section and the stripping section of the naphthenic acid box-type mixing-settling tank, The water phase flow rate entering the mixing chamber is controlled by adjusting the height of the water phase pipe, so that the ratio of each stage of the mixing chamber can be controlled to achieve controllability of the process of naphthenic acid extraction and separation of high-purity yttrium. The specific operations are:

[0031] When the box-type mixing and settling tank has just started to operate, and the flow rate of the organic phase and the water phase in the settling tank fluctuates greatly so that the mixing chamber is not in a viscous state, the water phase return pipe of the clarification chamber of this level is lowered to make the flow ra...

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Abstract

The invention relates to a highly stable method for extracting and separating high-purity yttrium with naphthenic acid. In the process of extracting and separating high-purity yttrium with naphthenic acid, the method can still ensure that there is a suitable phase in the mixing chamber when the oil-water ratio is large or serious fluctuations occur. Ratio to ensure that the mixing chamber is in a viscous state, and the mixed phase is quickly clarified and separated in the clarification chamber. The process of the invention is simple, and simple operation steps can be used to quickly and stably adjust the phase ratio of the naphthenic acid extraction and separation high-purity yttrium tank body mixing chamber, quickly rebuild the sticky system of the mixing chamber, and ensure the normal phase separation of the clarification chamber. It is simple and stable, which reduces the technical requirements for operators and is conducive to the stable production of enterprises.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy, and in particular relates to a method for extracting and separating high-purity yttrium with highly stable naphthenic acid. Background technique [0002] The naphthenic acid-mixed alcohol-kerosene extraction system can obtain high-purity yttrium in one step without extraction grouping. The process has the advantages of wide sources of extractant, low production cost, simple process, high product purity and high yield, and has now formed a large-scale production process line. [0003] However, the naphthenic acid-mixed alcohol-kerosene extraction system has an important disadvantage in production practice: the mixing chamber needs to be kept sticky to ensure normal phase separation in the clarification chamber. The mixing chamber is sticky and needs to maintain a high ratio from the beginning of operation (minimum ratio V water: V oil = 0.1), and when the flow ratio is too low, it will ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B59/00C22B3/32
CPCY02P10/20
Inventor 胡谷华韦世强杨桂林秦文忠彭新林黄华勇胡振光卢阶主蒋超超江泽佐羊多彦李飞龙况涛许旭升庄辉张亮玖
Owner CHALCO GUANGXI RARE EARTH DEV CO LTD
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