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Iron-containing aluminum chloride solution iron removal method

A technology of aluminum chloride and solution, applied in the field of chemical separation, can solve the problems of high cost and low efficiency, and achieve the effects of low cost, high iron removal rate, and no additional pollution to the cost.

Inactive Publication Date: 2015-11-04
CHINA SHENHUA ENERGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to provide a method for removing iron from iron-containing aluminum chloride solution, so as to solve the problems of low efficiency and high cost in the prior art when removing iron from iron-containing aluminum chloride solution

Method used

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  • Iron-containing aluminum chloride solution iron removal method
  • Iron-containing aluminum chloride solution iron removal method
  • Iron-containing aluminum chloride solution iron removal method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 8

[0037] Embodiment 1 to 8 is the iron removal experiment of iron-containing aluminum chloride:

Embodiment 1

[0039] Take an iron-containing aluminum chloride solution with an aluminum chloride mass percentage of 16% and an iron ion concentration of 1.8 g / L. After controlling its temperature at 15°C, the solution was passed through a single resin column containing 201×7 anion exchange resin at a flow rate of 5BV / h through a corrosion-resistant pump. And the way of passing the solution through the column is from top to bottom.

Embodiment 2

[0041] Take an iron-containing aluminum chloride solution with a mass percentage of aluminum chloride of 16% and an iron ion concentration of 2 g / L. After controlling its temperature at room temperature, the solution was passed through a single resin column containing 201×7 anion exchange resin at a flow rate of 4 BV / h through a corrosion-resistant pump. And the way of passing the solution through the column is from top to bottom.

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PUM

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Abstract

The invention discloses an iron-containing aluminum chloride solution iron removal method. The method comprises treating an iron-containing aluminum chloride solution by an anion exchange resin column so that iron ions are adsorbed by the resin column and the ion adsorption resin column and the aluminum chloride solution without iron are obtained. The iron-containing aluminum chloride solution iron removal method has anion exchange resin-based iron ion selective adsorptivity better than aluminum ion selective adsorptivity because of easy iron ion complexation effects. When the iron-containing aluminum chloride solution goes through the anion exchange resin column, iron ions in the aluminum chloride solution and anions in the resin are compounded and form a negative ion complex so that iron ions can be adsorbed by the resin column and iron removal is realized. The anion exchange resin-based iron selective adsorption removal method has a high iron removal rate and a low cost and does not produce additional pollution.

Description

technical field [0001] The invention relates to the field of chemical separation, in particular to a method for removing iron from an iron-containing aluminum chloride solution. Background technique [0002] With the advancement of science and technology, people's demand for non-ferrous metals such as aluminum, copper, lead, and zinc is also increasing, and the demand for aluminum is the largest. The main source of aluminum metal is the electrolysis of alumina, which is mainly derived from bauxite. At present, almost all alumina production at home and abroad comes from the smelting of bauxite. However, the mass production of alumina has led to a sharp decrease in high-quality bauxite. In order to alleviate the crisis of bauxite resources, it is urgent to find another way to find alumina sources. In recent years, with the development of coal resources in western my country and the construction of large-scale thermal power plants, high-alumina fly ash has also become a new ...

Claims

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Application Information

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IPC IPC(8): C01F7/62
Inventor 寇晓康郭昭华樊文岷刘大锐李岁党邹萍王瑞徐靓
Owner CHINA SHENHUA ENERGY CO LTD
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