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A method for extracting indium from solution by impinging flow-rotating packed bed extractor

A technology of rotating packed bed and impinging flow, applied in the field of indium extraction, which can solve the problems of demanding manufacturing and installation, high equipment and operating costs, and poor adaptability

Inactive Publication Date: 2016-11-30
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Centrifugal extractors have made breakthroughs in stage efficiency, but are demanding in manufacturing and installation, have poor adaptability, high equipment and operating costs, and serious organic phase entrainment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The method for extracting indium from a solution using an impinging flow-rotating packed bed extractor is described in the impinging flow-rotating packed bed extractor. The indium organic phase continues to be back-extracted in the impinging flow-rotary packed bed extractor to obtain the indium product and the unloaded organic phase, and the unloaded organic phase is returned to the extraction process as an extractant.

[0022] Among them, the indium-containing solution is a sulfuric acid system solution of the zinc oxide soot leaching supernatant, and its main components are Zn16.46g / L, As9.62g / L, In2.92g / L, Fe2.04g / L.

[0023] The specific steps are as follows:

[0024] (1) Firstly, the indium-containing solution and the extractant are transported by the metering pump to the respective channels in the impinging flow-rotary packed bed extractor according to the flow ratio of 1.5:1, and the two phases are impacted and mixed at the outlet of the channel at an initial vel...

Embodiment 2

[0028] The method for extracting indium from a solution using an impinging flow-rotating packed bed extractor is described in the impinging flow-rotating packed bed extractor. The indium organic phase continues to be back-extracted in the impinging flow-rotary packed bed extractor to obtain the indium product and the unloaded organic phase, and the unloaded organic phase is returned to the extraction process as an extractant.

[0029] The indium-containing solution is a hydrochloric acid system solution of soot pickling solution, and its main components are Zn5.3g / L, As8.0g / L, In1.2g / L, Fe1.5g / L.

[0030] The specific steps are as follows:

[0031] (1) Firstly, the indium-containing solution and the extractant are transported by the metering pump to the respective channels in the impinging flow-rotary packed bed extractor according to the flow ratio of 3:1, and the two phases are impacted and mixed at the outlet of the channel at an initial velocity of 2m / s. The indium-loaded...

Embodiment 3

[0035]The method for extracting indium from a solution using an impinging flow-rotating packed bed extractor is described in the impinging flow-rotating packed bed extractor. The indium organic phase continues to be back-extracted in the impinging flow-rotary packed bed extractor to obtain the indium product and the unloaded organic phase, and the unloaded organic phase is returned to the extraction process as an extractant.

[0036] The indium-containing solution is the hydrochloric acid system solution of blast furnace gas ash acid immersion solution, and the main components are Zn32.1g / L, As3.24g / L, In0.24g / L, Fe5.03g / L.

[0037] The specific steps are as follows:

[0038] (1) Firstly, the indium-containing solution and the extractant are transported by the metering pump to the respective channels in the impinging flow-rotary packed bed extractor according to the flow ratio of 5:1, and the two phases are impacted and mixed at the outlet of the channel at an initial velocity...

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Abstract

The invention relates to a method of extracting indium from a solution by adopting an impinging stream-rotating packed bed extractor, and belongs to the technical field of indium smelting. The method comprises the following steps: impinging and mutually mixing an indium-containing solution with an extracting agent in the impinging stream-rotating packed bed extractor to obtain an indium-loaded organic phase in an extracting process; carrying out reverse extraction on the indium-loaded organic phase in the impinging stream-rotating packed bed extractor to obtain an indium product and a no-load organic phase; and returning the load organic phase to the extracting process to be used as an extracting agent. The method can be used for lowering the consumption of the extracting agent in an indium extracting process, improving the production efficiency and the separating efficiency.

Description

technical field [0001] The invention relates to a method for extracting indium from a solution by using an impact flow-rotary packed bed extractor, and belongs to the technical field of indium smelting. Background technique [0002] A large amount of indium-containing smoke and dust will be produced during the smelting of non-ferrous metals such as copper, lead, zinc, and tin, and even the gas mud generated during blast furnace ironmaking contains a certain amount of indium. Since the price of indium is very expensive, recycling indium from these substances can not only realize the comprehensive recycling of resources and reduce the discharge of three wastes, but also has great economic value. [0003] The extraction and stripping process is an important part of the indium smelting process. In the indium extraction process, acidic phosphorus-containing extractants are commonly used, such as P204, C923, etc. TBP, TOA, etc. are also used abroad. The extraction equipment used ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/40C22B58/00
CPCY02P10/20
Inventor 常军彭金辉陈景张利波叶乾旭
Owner KUNMING UNIV OF SCI & TECH
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