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Preparation method for ammonium rhenate from waste high temperature alloy enriched material

A high-temperature alloy and ammonium rhenate technology, which is applied in the field of hydrometallurgy, can solve the problems of rare separation and recovery, and achieve the effect of low equipment investment cost and simple operation

Inactive Publication Date: 2013-12-11
SINO PLATINUM METALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] These processes are mainly to separate and recover rhenium from leaching raw ore, spent catalyst and soot, but the research on separating and recovering rhenium from waste superalloys is rare

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Melt in an intermediate frequency furnace or a high frequency furnace at a temperature of 1400°C for 60 minutes, then use nitrogen or argon to spray powder, and then leaching through one of sulfuric acid, nitric acid, and hydrochloric acid, and the leaching residue is passed through sulfuric acid, nitric acid, hydrochloric acid and chlorine. Sodium chloride, potassium chloride and ferric chloride mixture are leached to obtain a solution containing tungsten, molybdenum and rhenium. Measure 20L of tungsten-molybdenum-rhenium solution (tungsten 2.15g / L, molybdenum 0.14g / L, rhenium 0.62g / L), wash the resin with deionized water for 15 hours at a temperature of 30°C, then rinse with 1% hydrochloric acid for 4 hours, and then use Rinse with 2% sodium hydroxide for 5 hours. Perform ion exchange again, pour 500ml each time, let it stand for 60min, and then exchange, the solution titration rate is 30ml / min, the exchange solution is ready for subsequent removal of tungsten and mol...

Embodiment 2

[0028] Melt in an intermediate frequency furnace or a high frequency furnace at a temperature of 1500°C for 60 minutes, then use nitrogen or argon to spray powder, and then leaching through one of sulfuric acid, nitric acid, and hydrochloric acid, and the leaching residue is passed through sulfuric acid, nitric acid, hydrochloric acid and chlorine. Sodium chloride, potassium chloride and ferric chloride mixture are leached to obtain a solution containing tungsten, molybdenum and rhenium. Measure 20L of tungsten-molybdenum-rhenium solution (tungsten 2.03g / L, molybdenum 0.27g / L, rhenium 0.58g / L), wash the resin with deionized water for 12 hours at a water temperature of 40°C, then rinse with 2% hydrochloric acid for 4 hours, and then use Rinse with 2% sodium hydroxide for 5 hours. Perform ion exchange again, pour 500ml each time, let it stand for 60min, and then exchange, the solution titration rate is 30ml / min, the exchange solution is ready for subsequent removal of tungsten a...

Embodiment 3

[0030] Melt in an intermediate frequency furnace or a high frequency furnace at a temperature of 1600°C for 30 minutes, then spray powder with nitrogen or argon, and then leaching with one of sulfuric acid, nitric acid, and hydrochloric acid, and the leaching residue is passed through sulfuric acid, nitric acid, hydrochloric acid and chlorine. Sodium chloride, potassium chloride and ferric chloride mixture are leached to obtain a solution containing tungsten, molybdenum and rhenium. Measure 20L of tungsten-molybdenum-rhenium solution (tungsten 2.24g / L, molybdenum 0.21g / L, rhenium 0.81g / L), wash the resin with deionized water for 15 hours at a temperature of 35°C, then rinse with 5% hydrochloric acid for 4 hours, and then use Rinse with 1% sodium hydroxide for 5 hours. Perform ion exchange again, pour 500ml each time, let stand for 30min, and then exchange, the solution titration rate is 30ml / min, the exchange solution is ready for subsequent removal of tungsten and molybdenum,...

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Abstract

The invention discloses a preparation method for ammonium rhenate from a waste high temperature alloy enriched material. The method comprises the following steps: subjecting a waste high temperature alloy to melting, atomization and powder injection and leaching nickel and cobalt to obtain a tungsten-molybdenum-rhenium enriched material; then subjecting the tungsten-molybdenum-rhenium enriched material to acid leaching, alkali treatment and the like so as to obtain a solution containing tungsten, molybdenum and rhenium; carrying out ion exchange by using a certain resin so as to obtain a solution rich in rhenium; and carrying out concentration and crystallization so as to prepare pure ammonium rhenate. A raw material used in the invention is a material rich in tungsten, molybdenum and rhenium obtained after earlier-stage pretreatment of the waste high temperature alloy; the preparation method is convenient for large scale production, is a sustainable green and environment-friendly process cyclically using resources and discharging no harmful exhaust gas and has good practicality, economic benefits and social benefits.

Description

technical field [0001] The invention belongs to the field of hydrometallurgy, in particular to a method for preparing ammonium rhenate from waste superalloy enrichment materials. Background technique [0002] Scrap superalloys contain valuable metals such as nickel, cobalt, tungsten, molybdenum, and rhenium. Although more and more attention has been paid to the recycling of superalloy waste in recent years, because the content of rhenium in the alloy is generally relatively small, the recycling process is complicated and the equipment investment Large, high product costs, especially the research on extracting rhenium from waste superalloys is relatively small. At present, the methods for separating and enriching rhenium mainly include ion exchange method, solvent extraction method, activated carbon adsorption method and so on. [0003] Qin Yunan reported in "China Molybdenum Industry" 1998, Volume 22, Issue 5, the process of using macroporous anion exchange resin D296 to ex...

Claims

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Application Information

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IPC IPC(8): C22B61/00C22B7/00C22B3/42C22B3/04
CPCY02P10/20
Inventor 范兴祥董海刚吴跃东行卫东赵家春李博捷吴晓峰童伟锋杨海琼保思敏
Owner SINO PLATINUM METALS CO LTD
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