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Method for recovering rhenium from molybdenum smelting waste acid by using secondary amine impregnated resin

A technology of impregnating resin and secondary amines, which is applied in the field of hydrometallurgy and comprehensive recovery of secondary resources, can solve the problem of high reagent consumption, achieve the effects of reducing the loss of secondary amines, high enrichment ratio, and good adsorption treatment effect

Pending Publication Date: 2021-10-29
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method improves the adsorption speed and adsorption capacity of rhenium, and realizes the efficient and comprehensive recovery of molybdenum at the same time, but there is a problem of high reagent consumption

Method used

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  • Method for recovering rhenium from molybdenum smelting waste acid by using secondary amine impregnated resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The secondary amine impregnated resin of the present embodiment is made by the preparation method comprising the following steps:

[0022] At room temperature, di-n-octylamine was dissolved in dichloromethane to prepare a solution with a mass percent concentration of 10%; a certain amount of Amberlite XAD-4 resin was soaked in the above-mentioned organic solvent containing secondary amine, and the reaction was completed after shaking for 24 hours. After filtering, and washing with ethanol for 3 times, the resin was vacuum-dried at 50°C to obtain impregnated resin 1.

[0023] Adopt above-mentioned impregnation resin 1 to reclaim rhenium from the waste acid of molybdenum smelting (get the waste acid of molybdenum smelting and carry out component analysis, record S 49g / L, Mo 582mg / L, Re 48mg / L, F 12.1g / L in the acid liquid), Include the following steps:

[0024] 1) Take 1L of impregnation resin 1 prepared above and put them into 4 ion exchange columns connected in series ...

Embodiment 2

[0029] The secondary amine impregnated resin of the present embodiment is made by the preparation method comprising the following steps:

[0030] At room temperature, dissolve diisooctylamine in ethanol to prepare a solution with a concentration of 15% by mass; soak a certain amount of Amberlite XAD-7HP resin in the above-mentioned organic solvent containing secondary amine, shake for 20 hours, and filter after the reaction , and washed with ethanol three times, and the resin was vacuum-dried at 50°C to obtain impregnated resin 2.

[0031] Recover rhenium from molybdenum smelting waste acid by adopting above-mentioned impregnating resin 2, (get molybdenum smelting waste acid and carry out component analysis, record S 49g / L, Mo 582mg / L, Re 48mg / L, F 12.1g / L in the acid solution) Include the following steps:

[0032] 1) Take 1L of the above-prepared impregnation resin 2 and put them into 4 ion-exchange columns connected in series (each column is filled with 0.25L of ion-exchang...

Embodiment 3

[0037] The secondary amine impregnated resin of the present embodiment is made by the preparation method comprising the following steps:

[0038]At room temperature, di-n-quinylamine was dissolved in acetone to prepare a solution with a mass percent concentration of 10%; a certain amount of Amberlite XAD-16 resin was soaked in the above-mentioned organic solvent containing secondary amines, shaken for 24 hours, and filtered after the reaction was completed. And washed with ethanol for 3 times, and the resin was vacuum-dried at 50°C to obtain impregnated resin 3.

[0039] Recover rhenium from molybdenum smelting waste acid by adopting above-mentioned impregnating resin 3, (take molybdenum smelting waste acid and carry out component analysis, record S 49g / L, Mo 582mg / L, Re 48mg / L, F 12.1g / L in the acid solution) Include the following steps:

[0040] 1) Take 1L of impregnation resin 3 prepared above and put them into 4 ion exchange columns connected in series (each column is fil...

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Abstract

The invention relates to a method for recovering rhenium from molybdenum smelting waste acid by using secondary amine impregnated resin, and belongs to the field of hydrometallurgy and comprehensive recovery of secondary resources. The method comprises the following steps that (1) filtered molybdenum smelting waste acid flows through a secondary amine impregnated resin column, the secondary amine impregnated resin column absorbs the filtered molybdenum smelting waste acid to be saturated, and a loaded impregnated resin column is obtained; (2) leaching is performed with water, then desorbing is performed with ammonia water, and a rhenium-containing desorption solution is obtained; and (3) the rhenium-containing desorption solution is evaporated and crystallized to obtain ammonium perrhenate. The secondary amine impregnated resin is prepared from double-long-chain alkyl secondary amine (the alkyl chain length is C8 to C13) and Amberlite XAD4, Amberlite XAD7HP or Amberlite XAD16, and the secondary amine impregnated resin is large in saturated adsorption capacity of rhenium, high in rhenium enrichment proportion, good in product stability and good in selective adsorption performance of rhenium. The rhenium recovery technology is simple, environmentally friendly, easy and convenient to operate and suitable for large-scale production and application.

Description

technical field [0001] The invention relates to a method for recovering rhenium from molybdenum smelting waste acid by using a secondary amine impregnated resin, and belongs to the field of hydrometallurgy and comprehensive recovery of secondary resources. Background technique [0002] Rhenium is a rare metal with a high melting point. It has excellent plasticity and stable mechanical properties. It plays an irreplaceable role in aerospace, electrical machinery, electronics and other fields, and has high military value. Since rhenium resources rarely have independent deposits and mostly exist in chalcopyrite and molybdenite in the form of associated ores, rhenium is mainly produced as a by-product of copper and molybdenum smelting. Rhenium oxide is easy to sublimate, and enters the flue gas eluent during the smelting process of molybdenum concentrate roasting, and is mainly recovered by ion exchange or extraction. Due to the complex composition of impurity ions in waste aci...

Claims

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Application Information

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IPC IPC(8): C22B61/00B01J20/26B01J20/32B01J20/34C22B3/24
CPCC22B61/00C22B3/24B01J20/265B01J20/3248B01J20/3475Y02P10/20
Inventor 王威刘红召张博柳林曹耀华王洪亮
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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