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Ion exchanging method for extracting gallium from alumina production process

A technology of ion exchange method and production process, which is applied in the direction of improving process efficiency, etc., can solve the problems of high viscosity of adsorption mother liquor, increase production cost, and low leaching rate, and achieve improved leaching method, reduced production cost, and improved process efficiency. The effect of simple equipment

Active Publication Date: 2009-07-08
冯峰 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The difficulty in recovering gallium metal from the alumina production process by the ion exchange method lies in: (1) the viscosity of the adsorption mother liquor is relatively high, the throughput is low, and the resin is not easily saturated; The concentration of liquid gallium is low
(3) The proportion of resin in the production cost is relatively large. If the equipment is not selected properly, the amount of resin loaded at one time will be large, which will increase the production cost.

Method used

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  • Ion exchanging method for extracting gallium from alumina production process

Examples

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Comparison scheme
Effect test

example 1

[0022] The method described in this embodiment includes the following steps:

[0023] a. Adsorption process: the resin is sent from the leaching tower to the head of the adsorption tower under pressure, and the resin direction is high in and low out; the mother liquor flows upstream, low in and high out, enters the adsorption tower from the bottom of the adsorption tower, and overflows from the top of the tower out; the adsorption tower adopts dense mobile adsorption, the adsorption time is 1 hour, and the adsorption flow rate is 50m 3 / h, the concentration of the tail liquid reaches 95mg / L; each time the resin is lifted, the resin moves from the tower head to the bottom of the tower once. fully washed;

[0024] b. Full washing In the full washing tower, use clear water to enter the liquid from the lower part and discharge the liquid from the upper part to fully wash the resin in the tower. The empty tower linear velocity is controlled at 10m / h for 1 hour; after full washing,...

example 2

[0030] The difference between this embodiment and embodiment 1 is:

[0031] For rinsing, 4 leaching towers of No. 1-2-3-4 tower are used for rinsing in series, and the eluent is used to enter the liquid from the upper part of the leaching tower and the lower part to discharge the liquid, and the resin in the leaching tower is leached. The line speed is controlled at 9.5m / h, and the time is 1 hour; the No. 4 tower enters the eluent, and the No. 1 tower exits the qualified liquid.

[0032] The transformation adopts No. 5-6 leaching tower, and the resin in the leaching tower is transformed with clean water from the upper part of the leaching tower and the lower part of the liquid.

example 3

[0034] The difference between this embodiment and embodiment 1 is:

[0035] For rinsing, 4 elution towers of tower No. 1-2-3-6 are used for rinsing in series, and the eluent is used to enter the liquid from the upper part of the leaching tower and the lower part to discharge the liquid, and the resin in the leaching tower is leached. The line speed is controlled at 9.5m / h, and the time is 1 hour; the eluent enters the No. 3 tower, and the qualified liquid comes out of the No. 6 tower.

[0036] The transformation adopts No. 5-4 leaching tower, and the resin in the leaching tower is transformed with clean water from the upper part of the leaching tower and the lower part of the liquid.

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Abstract

The present invention relates to gallium extracting ion exchange process in alumina production, and features that two kinds of ion exchange equipment, including dense moving bed and fixed bed, are used in extracting gallium. The gallium extracting process includes the following steps: 1. adsorbing in a dense moving bed to reach tail liquid gallium concentration of 70-110mg / L; 2. washing in a single fixed bed with clear water; 3. rinsing with clear water in the empty tower linear rate of 6-13 m / s; 4. countercurrent leaching in serially connected fixed beds; 5. countercurrent converting in serially connected fixed beds with clear water; and 6. moving resin periodically in the adsorbing equipment, washing equipment, rinsing equipment, leaching equipment and converting equipment successively. Compared with available technology, the present invention has the advantages of simple equipment and automatic convenient operation.

Description

technical field [0001] The patent of the present invention relates to an ion exchange method for extracting gallium from alumina production process by using chelating resin. , can be widely used in the hydrometallurgical industry. technical background [0002] Gallium is a scattered metal, but our country is very rich in resources. The production potential of China's gallium is relatively large in the world, and the domestic competition is also very fierce. At present, manufacturers at home and abroad have realized that there are many ways to produce gallium. The only advanced economic index is to use the ion exchange method to recover gallium metal from the alumina production process. Therefore, all manufacturers have increased research investment in the ion exchange production process and equipment for gallium, and are constantly improving and improving to achieve low production costs. The purpose of high cost output. [0003] The difficulty in recovering gallium metal f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/22C22B3/24C22B3/42
CPCY02P10/20
Inventor 冯峰于相浩
Owner 冯峰
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