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Chelating resin special for adsorbing of gallium and preparation method and application thereof

A technology for chelating ions and exchanging resins, which is applied in chemical instruments and methods, other chemical processes, and the improvement of process efficiency. It can solve problems such as large pollution, high cost, and large waste, and achieve long service life and stable performance. , the effect of high adsorption capacity

Active Publication Date: 2010-11-03
SUNRESIN NEW METERIALS CO LTD XIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing method for reclaiming gallium from the Bayer solution has large pollution, high cost, and produces a large amount of waste. For this reason, the present invention provides a special chelating ion exchange resin for adsorbing gallium , which has a short operation process, convenient operation, no need to add any reagent to the sodium aluminate solution, no pollution and no waste, and this kind of resin has high adsorption capacity, good strength, long service life and stable performance. characteristic

Method used

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  • Chelating resin special for adsorbing of gallium and preparation method and application thereof
  • Chelating resin special for adsorbing of gallium and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0043] A special chelating ion exchange resin for adsorbing gallium, the preparation method of which is as follows:

[0044](1) Suspension polymerization

[0045] 137kg of 65.63% divinylbenzene, 163kg of styrene, 120kg of isooctane, 120kg of toluene, 120kg of liquid paraffin, and 2.56kg of benzoyl peroxide were mixed uniformly and placed in a reaction kettle. Add 2000L of water in which the dispersant gelatin has been dissolved, and carry out suspension polymerization. The holding time of each gear is 3 hours at 65°C, 2 hours at 75°C, and 4 hours at 90°C, and then washed with water to obtain copolymerized beads (1);

[0046] Wherein said porogen is a mixture of isooctane, toluene and liquid paraffin, and its consumption is 120% of the total weight of crosslinking agent divinylbenzene and styrene, and the specific calculation is: (120+120+120)÷(137 +163)×100%=120%.

[0047] The initiator benzoyl peroxide is 0.85% of the total weight of the crosslinking agent divinylbenzene an...

Embodiment 2

[0060] A special chelating ion exchange resin for adsorbing gallium, the preparation method of which is as follows:

[0061] (1) Suspension polymerization

[0062] 65.63% 137kg of divinylbenzene, 163kg of styrene, 240kg of isooctane, 240kg of xylene, 60kg of liquid paraffin, 3kg of azobisisobutyronitrile, mixed uniformly, and placed in a reaction kettle. Add 2000L of brine in which the dispersant hydroxyethyl cellulose has been dissolved, and carry out suspension polymerization. The holding time of each gear is 2 hours at 70°C, 2 hours at 80°C, and 7 hours at 98°C, and then washed with water to obtain copolymerized beads (1)

[0063] Wherein said porogen is a mixture of isooctane, xylene and liquid paraffin, and its consumption is 180% of the total weight of crosslinking agent divinylbenzene and styrene, and the specific calculation is: (240+240+60)÷( 137*+163)*100%=180%.

[0064] The initiator azobisisobutyronitrile is 1% of the total weight of the crosslinking agent diviny...

Embodiment 3

[0077] A special chelating ion exchange resin for adsorbing gallium, the preparation method of which is as follows:

[0078] (1) Suspension polymerization

[0079] 65.63% divinylbenzene 45.7kg, styrene 254.3kg, isooctane 105kg, toluene 105kg, xylene 105kg, liquid paraffin 105kg, benzoyl peroxide and azobisisobutyronitrile each 1.5kg, mix well, place in the reactor. Add 2000L of dissolved dispersant polyvinyl alcohol in brine, and carry out suspension polymerization. The holding time of each gear is 2 hours at 70°C, 2 hours at 85°C, and 5 hours at 95°C, and then washed with water to obtain copolymerized beads (1);

[0080] Wherein said porogen is a mixture of isooctane, toluene, xylene and liquid paraffin, and its consumption is 140% of the total weight of crosslinking agent divinylbenzene and styrene, and the specific algorithm is: (105+105+105+ 105)÷(45.7+254.3)×100%=140%.

[0081] The initiator benzoyl peroxide and azobisisobutyronitrile are 1% of the total weight of the ...

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Abstract

The invention discloses a chelating ion-exchange resin special for the adsorbing of gallium and a preparation method thereof. The chelating ion-exchange resin comprises the copolymer of styrene-divinylbenzene in the formulas (I) and (II) and is prepared by suspension polymerization. The method comprises the following steps of: mixing a cross linking agent, styrene, a porogenic agent, an initiator and water; performing the suspension polymerization on the mixture in the presence of a conventional dispersing agent; reacting the obtained product at the temperature of between 65 and 70 DEG C for 2 to 3h, at the temperature of between 75 and 80 DEG C for 2 to 4h and at the temperature of between 85 and 98 DEG C for 4 to 7h sequentially; and performing washing, chloridization, functionalization and amidoximation on the reaction product to obtain the chelating ion-exchange resin special for the adsorbing of the gallium. The method has the advantages of simple and short operation procedure, convenient operation, and no need of any reagents added into sodium aluminate solution, non-pollution and no waste during the adsorbing of the gallium.

Description

technical field [0001] The present invention relates to a novel functional polymer compound, in particular to a chelating ion exchange resin specially used for gallium adsorption. The present invention also relates to a preparation method and application of the above-mentioned chelating ion exchange resin specially used for gallium adsorption. Background technique [0002] Gallium is a relatively rare element and has important applications in the semiconductor industry. Therefore, the demand for gallium is expected to increase in the future. The source of gallium is scarce, and its products are mostly from the by-products of the aluminum industry. The extraction of gallium usually adopts the method of recovering gallium from the Bayer process solution, which is recognized as the best method of recovering gallium in the world. [0003] There are many methods for recovering gallium from Bayer solution, currently commonly used are amalgam method, fractional precipitation method...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C22B3/24
CPCY02P10/20
Inventor 寇晓康刘金华韦卫军
Owner SUNRESIN NEW METERIALS CO LTD XIAN
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