Method for recovering rhenium from high-temperature alloy pickle liquor

A technology of superalloy and acid leaching solution, applied in the field of rare metal resource recovery and utilization, can solve the problems of long recovery process, complicated procedures, large rhenium loss, etc., and achieve high direct rhenium yield, simple operation and low cost. Effect

Inactive Publication Date: 2014-05-14
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using the conventional rhenium recovery process, the recovery process is lo

Method used

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  • Method for recovering rhenium from high-temperature alloy pickle liquor

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Embodiment 1

[0021] The method for reclaiming rhenium from the superalloy acid leaching solution in this embodiment comprises the following steps:

[0022] Step 1, using saturated sodium carbonate solution to adjust the pH value of the superalloy pickling solution to 1.5, and then using ion exchange resin to carry out ion exchange treatment on the high temperature alloy pickling solution with a pH value of 1.5, so that the high temperature alloy pickling solution Rhenium and molybdenum are adsorbed on the ion exchange resin; the ion exchange resin is a macroporous D296 strong basic anion exchange resin; the pH of the superalloy acid immersion solution is -1.37, and contains nickel, cobalt, molybdenum and rhenium elements , the contents of nickel, cobalt, molybdenum and rhenium in the superalloy acid immersion solution measured before and after ion exchange treatment are shown in Table 1;

[0023] Step 2, first prepare the mixed solution of ammoniacal liquor and ammonium chloride, the prepa...

Embodiment 2

[0029] The method for reclaiming rhenium from the superalloy acid leaching solution in this embodiment comprises the following steps:

[0030] Step 1. Adjust the pH value of the superalloy acid leaching solution to 1.8 with a saturated sodium hydroxide solution, and then use an ion exchange resin to perform ion exchange treatment on the high temperature alloy acid leaching solution with a pH value of 1.8, so that the superalloy acid leaching solution The rhenium and molybdenum are adsorbed on the ion exchange resin; the ion exchange resin is a gel-type 201×7 strong basic anion exchange resin; the pH of the superalloy acid dipping solution is -0.56, and contains nickel, cobalt, and molybdenum , rhenium element, the contents of nickel, cobalt, molybdenum and rhenium in the superalloy acid immersion solution measured before and after ion exchange treatment are shown in Table 2;

[0031] Step 2, first prepare the mixed solution of ammoniacal liquor and ammonium chloride, the prepa...

Embodiment 3

[0037] The method for reclaiming rhenium from the superalloy acid leaching solution in this embodiment comprises the following steps:

[0038]Step 1. Adjust the pH value of the superalloy pickling solution to 1.2 with a saturated solution of sodium carbonate, and then use an ion exchange resin to carry out ion exchange treatment on the high temperature alloy pickling solution with a pH value of 1.2, so that the high temperature alloy pickling solution Rhenium and molybdenum are adsorbed on the ion-exchange resin; the ion-exchange resin is a gel-type 201×4 strongly basic anion-exchange resin; the pH=-2.18 of the high-temperature alloy acid immersion solution contains nickel, cobalt, molybdenum, Rhenium element, the contents of nickel, cobalt, molybdenum and rhenium in the superalloy acid immersion solution measured before and after ion exchange treatment are shown in Table 3;

[0039] Step 2, first prepare the mixed solution of ammoniacal liquor and ammonium chloride, the prepa...

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Abstract

The invention provides a method for recovering rhenium from a high-temperature alloy pickle liquor. The method comprises the following steps: 1, adjusting the pH value of the high-temperature alloy pickle liquor to 1-2, and then adsorbing rhenium and molybdenum in the high-temperature alloy pickle liquor by adopting ion exchange resin; 2, desorbing molybdenum by adopting a mixed solution of ammonia water and ammonium chloride, and then desorbing the rhenium by using an ammonium thiocyanate solution, so as to obtain stripping liquid containing rhenium; 3, adding water soluble potassium to the stripping liquid containing rhenium according to the ratio, and then orderly heating, concentrating, crystallizing, washing and recrystallizing, so as to obtain potassium perrhenate. The ion exchange resin adsorption and step-by-step desorption are organically combined, the rhenium loss can be effectively avoided, the technological process is shortened, the process is simple and feasible, and the production cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of recovery and utilization of rare metal resources, and in particular relates to a method for recovering rhenium from a high-temperature alloy acid leaching solution. Background technique [0002] Rhenium is a precious scattered metal with high melting point, high strength, good plasticity and excellent mechanical stability, which makes it widely used in important fields such as national defense, aviation, aerospace, petrochemical and electronic industries, especially Petroleum reforming catalysts and superalloys account for the majority of rhenium consumption. Rhenium is mainly recovered from molybdenite and copper sulfide ore, and currently there are mainly two treatment processes: fire method and wet method. The pyrotechnic process is to oxidize and roast molybdenite or copper sulfide ore first, oxidize rhenium sulfide to form volatile and water-soluble rhenium oxide Re2O7, enter the smoke, and then abs...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B59/00C22B3/24
CPCY02P10/20
Inventor 陈昆昆马光王治钧孟晗琪王靖坤李进吴贤
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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