Ion exchange method for extracting gallium from seed separation mother liquid

A technology of ion exchange method and separation of mother liquor, which is applied in the field of ion exchange method, can solve the problems affecting the production of alumina, increase the consumption of alumina steam, increase the amount of resin used, etc., to improve the leaching method and reduce the filling amount , the effect of reducing the amount of usage

Inactive Publication Date: 2009-12-09
冯峰
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The equipment and methods of ion exchange are varied and have fixed bed, dense moving bed, ISEP technology, and full countercurrent mixed bed ion exchange. These methods have the following problems: (1) return The mother liquor is diluted with water by 10-20%, which affects the index of alumina production and increases the steam consumption of alumina; Consumption of new water can reach 200,000-300,000 tons, wasting water resources; (3) The transformation of the resin is not complete, and the alkaline eluent is brought into the alumina production process through the mother liquor; (4) In order to ensure the saturation and transformation indicators, Increase the amount of resin, increase the production cost (5) The viscosity of the mother liquor is high, the throughput of the adsorption tower is small, especially the dense moving bed, in order to ensure the adsorption saturation, increase the amount of resin used, increase the production cost

Method used

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  • Ion exchange method for extracting gallium from seed separation mother liquid

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] The method described in this embodiment includes the following steps:

[0024] a. Adsorption process: The resin is sent to the adsorption tower after being centrifuged to separate the eluent. After the 1# tower is filled, the adsorption mother liquor goes up countercurrently, with low entry and high exit, entering the adsorption tower from the bottom of the adsorption tower, The overflow comes out, and the adsorption adopts multiple fixed beds to adsorb in parallel. 1#, 2#, and 3# can be adsorbed at the same time. The adsorption time of each tower is 1 hour, and the adsorption flow rate is 50m 3 / h, the tail liquid concentration reaches 95mg / L;

[0025] b. Centrifugal removal of mother liquor and swirling washing process: After the resin in the 1# tower is saturated, it is placed in a centrifuge for full washing and centrifuged to remove the mother liquor. Swirl washing to wash away the impurities entrained by the resin, after washing clean, put it into the correspondi...

example 2

[0029] The difference between this embodiment and embodiment 1 is:

[0030] Adsorption process: After 2# is filled with resin, start to adsorb. The saturated resin in the 2# adsorption tower is centrifuged to separate the mother liquor and to be washed by cyclone separation.

[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.

example 3

[0033] The difference between this embodiment and embodiment 1 is:

[0034] Adsorption process: After 3# is filled with resin, start to adsorb. The saturated resin of the 3# adsorption tower is centrifuged to separate the mother liquor and to be washed by cyclone separation.

[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.

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Abstract

The invention relates to an ion exchange method for extracting gallium from seed separation mother liquid, which is characterized in that gallium is extracted from seed separation mother liquid for producing alumina by different ion exchange equipment and ion exchange methods, namely the ion exchange method comprising the following steps: connecting a plurality of fixed beds in parallel to adsorb the seed separation mother liquid; removing the mother liquid by a centrifugal machine and then washing impurities in rotating flow; connecting the fixed beds in series to leach the impurities; and removing leaching agent by the centrifugal machine. Compared with the prior moving bed, ISEP technology and complete counter-flow mixed bed ion exchange, the technical method has the advantages of low production cost, simple technical equipment, convenient operation, easy automation realization, and the like.

Description

technical field [0001] The patent of the present invention relates to an ion-exchange method for extracting gallium from the mother liquid of seed separation by using a chelating resin. This method can be used for the recovery of metal gallium, and can also 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 mother liquor of alumina production. Therefore, all manufacturers have increased research investment in the process and equipment of ion exchange production of gallium, and are constantly improving and improving. To achieve the goal of low cost...

Claims

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Application Information

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IPC IPC(8): C22B58/00C22B3/42
CPCY02P10/20
Inventor 冯峰于湘浩
Owner 冯峰
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