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A method for recovering rhenium from molybdenum smelting waste acid

A waste acid, concentration technology, applied in chemical instruments and methods, preparation of rhenium compounds, rhenium compounds and other directions, can solve the problems of complex process operation, the recovery rate needs to be improved, etc., to achieve simple recovery process, long service life, shortening process The effect of the process

Active Publication Date: 2017-03-29
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its process operation is complicated, and the recovery rate of rhenium still needs to be improved.

Method used

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  • A method for recovering rhenium from molybdenum smelting waste acid

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Effect test

Embodiment 1

[0026] In this embodiment, the method for reclaiming rhenium from molybdenum smelting waste acid (the process flow diagram is shown in figure 1 ),Proceed as follows:

[0027] 1) Put 20L compound aminovinyl weak base anion exchange resin into 4 ion exchange columns (each column is filled with 5L resin), and connect them in series, first wash the resin with deionized water, and then use 60L Wash with 10% NaOH, 10% HCl, and finally use 100L of 5% H 2 SO 4 Resin is transformed, standby;

[0028] The preparation method of compound amino vinyl weak base anion exchange resin is as follows: put chlorine balls (purchased from Hebei Langfang Electric Power Resin Co., Ltd.) in water to swell for 1 hour and then filter out; Methylamine, N,N-dimethylaniline, and dimethylamine hydrochloride were incubated at 75°C for 7 hours. After the reaction, the resin was filtered out and soaked in dilute hydrochloric acid to make the soaking solution weakly acidic, and a milky white spherical shape ...

Embodiment 2

[0035] The method for reclaiming rhenium from molybdenum smelting waste acid in the present embodiment, the steps are as follows:

[0036] 1) Put 20L compound aminovinyl weak base anion exchange resin into 4 ion exchange columns (each column is filled with 5L resin), and connect them in series, first wash the resin with deionized water, and then wash it with 80L Wash with 8% NaOH and 8% HCl, and finally use 80L of 8% H 2 SO 4 Resin is transformed, standby;

[0037] The preparation method of compound amino vinyl weak base type anion exchange resin is as follows: put chlorine balls (purchased from Hebei Langfang Power Resin Co., Ltd.) into water to swell for 1 hour and then filter out, add 3:5:5:4 Methylamine, N,N-dimethylaniline and dimethylamine hydrochloride were kept at a temperature of 60°C for 10 hours. After the reaction, the resin was filtered out and soaked in dilute hydrochloric acid to make the soaking solution weakly acidic, and a milky white spherical shape was ob...

Embodiment 3

[0044] The method for reclaiming rhenium from molybdenum smelting waste acid in the present embodiment, the steps are as follows:

[0045] 1) Put 20L compound aminovinyl weak base anion exchange resin into 4 ion exchange columns (each column is filled with 5L resin), and connect them in series, first wash the resin with deionized water, and then use 100L Wash with 5% NaOH and 5% HCl, and finally use 60L of 10% H 2 SO 4 Resin is transformed, standby;

[0046] The preparation method of compound amino vinyl weak base type anion exchange resin is as follows: put chlorine balls (purchased from Hebei Langfang Power Resin Co., Ltd.) in water to swell for 1 hour and then filter out, add 3:3:7:2 Methylamine, N,N-dimethylaniline and dimethylamine hydrochloride were incubated at 90°C for 4 hours. After the reaction, the resin was filtered out and soaked in dilute hydrochloric acid to make the soaking solution weakly acidic to obtain a milky white spherical shape. Resin, the particle s...

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Abstract

The invention discloses a method for recovering rhenium from molybdenum smelting waste acid and belongs to the technical field of metal rhenium recovery and recycle. The method comprises 1, filtering molybdenum smelting waste acid, and treating the filtrate by a composite aminoethylene weak basic anion exchange resin column for adsorption until adsorption is saturated, and 2, carrying out desorption on the saturated anion exchange resin column, collecting the desorption liquid and carrying out evaporation crystallization to obtain ammonium perrhenate. The composite aminoethylene weak basic anion exchange resin has large saturation adsorption quantity. The desorption liquid has rhenium content 100 times or more that of waste acid. Compared with the existing extraction method and ion exchange method, the method provided by the invention has a high rhenium recovery rate of 98% or more. Through use of solubility difference of ammonium perrhenate, ammonium molybdate and ammonium sulfate, ammonium perrhenate is purified by evaporation crystallization and ammonium perrhenate purity is 99.9% or more. The method has a simple rhenium recovery process, is environmentally friendly, is convenient for operation and is suitable for large scale production.

Description

technical field [0001] The invention relates to a method for recovering rhenium from molybdenum smelting waste acid, belonging to the technical field of metal rhenium recovery and utilization. Background technique [0002] Metal rhenium is a rare metal with high melting point, which has important uses in industry. It is mainly used in petroleum reforming catalysts and super alloys, and its consumption accounts for 20% and 70% of rhenium products respectively. Since rhenium resources rarely have independent deposits and mostly exist in the form of associated ores, mainly distributed in chalcopyrite and molybdenite, rhenium is mainly a by-product of the development and utilization of molybdenum ore and copper ore. Since rhenium oxides are easily sublimated, during the roasting of molybdenum concentrate and the smelting of copper ore, rhenium enters the flue gas eluent and is mainly recovered by ion exchange or extraction. Because molybdenum smelting waste acid contains molyb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G47/00
CPCC01G47/003
Inventor 刘红召张五兴张博刘玲高照国范小祥王威温炎森曹耀华刘元旗肖华蔡朝辉符向东
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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