Novel method for enriching metal rhenium in high-temperature alloy waste recovery technology

A waste recycling and superalloy technology, which is applied in the field of metal rhenium enrichment and rare metal rhenium recovery, can solve the problems of low direct yield of rare metals, insignificant economic benefits, and low ion exchange efficiency, so as to improve the primary recovery rate. , The effect of simplifying the production process and high direct yield

Active Publication Date: 2013-06-26
昆明铂生金属材料加工有限公司
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AI Technical Summary

Problems solved by technology

The process generally includes leaching, chemical pre-removal of impurities, extraction and removal of impurities, nickel-cobalt separation and other processes, but this process is long, high energy consumption, large acid consumption, high cost of environmental protection treatment, and low direct

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1 : A certain type of nickel-based superalloy, the composition is as follows

[0031] element Cr co Mo W Re Al Ta Hf Ni Content (wt%)% 7 8 2 5 3 6 7 0.2 margin

[0032] Melt and cast 1,000 grams of nickel-based superalloy waste with the above components into 2 plates for electrolysis of 4 cm × 6 cm, in a 10% hydrochloric acid solution at 25 ° C, with an AC voltage of 2 V, a frequency of 5 Hz, and a current density of 10 A / dm 2 , the distance between the electrodes is 1 cm, and 212 grams of electrode material remains after 10 hours of electrolysis, during which the stirring rate is 20 rpm. After the electrolyte is filtered and washed, 109 grams of filter residues are obtained (after drying, the filter residues contain ReO 2 , according to known process), and 21 liters of solution containing metal rhenium ions (HReO 4 ), adding 4 liters of sodium hydroxide solution with a volume ratio of 1:2 to the electrolytic ...

Example Embodiment

[0033] Example 2 , A certain type of nickel-based superalloy, the composition is as follows

[0034] element Cr co Mo W Al Re Ni Content (wt%)% 8.3 9.5 1.8 9.9 5.6 2.7 margin

[0035] Melt and cast 1,000 grams of nickel-based superalloy waste with the above components into 2 plates for electrolysis of 4cm×6cm, in a 20% hydrochloric acid solution at 40°C, with an AC voltage of 3V, a frequency of 15Hz, and a current density of 15 A / dm 2 , the distance between the electrodes is 1.5 cm, and 118 grams of electrode material remains after 12 hours of electrolysis, during which the stirring rate is 20 rpm. After the electrolyte was filtered and washed, 107 grams of filter residue were obtained (after drying, the filter residue contained ReO 2 , according to known process), and 19 liters of solution containing metal rhenium ions (HReO 4 ), adding 6 liters of sodium hydroxide solution with a volume ratio of 1:3 to the electrolytic filtrate ...

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Abstract

The invention relates to a method for enriching metal rhenium in a high-temperature alloy waste recovery technology. The method is characterized by comprising the following steps of: adopting kieselguhr for replacing strong basic resin adopted in wet-process metallurgy, treating filtrate containing metal rhenium ions, enriching the metal rhenium ions in the filtrate by using the characteristics such as large porosity, strong adsorbability and stable chemical property of the kieselguhr, and soon afterwards, purifying the rhenium. The method has the remarkable advantages that the strong adsorption capacity and selectivity of the kieselguhr on the metal rhenium ions are used for enriching the metal rhenium ions in the filtrate; compared with ion exchange adsorption, the kieselguhr has high adsorption efficiency on the metal rhenium ions, increases the direct yield of the metal rhenium and is easy to desorb; lots of inorganic acids do not need to be consumed; the technological process is greatly shortened; the production working procedure is simplified; the environmental friendliness pressure is reduced; and simultaneously, high economic benefits are achieved. The method is a comprehensive recovery technology which is concise, short in technological process, small in specific volume and low in cost and has little pollution; and reports related to the method are not found at home and abroad.

Description

technical field [0001] The invention relates to a method for metal rhenium enrichment in the recycling process of high-temperature alloy waste, especially in the field of comprehensive recovery of nickel-based high-temperature alloy waste containing rare and precious metals such as rhenium, ruthenium, tungsten, molybdenum, tantalum, etc. Recovery of rare metal rhenium with short process and high recovery rate. Background technique [0002] Nickel-based superalloys refer to austenitic alloys based on nickel (more than 50% nickel). In the range of 650-1100°C, it has comprehensive properties such as high strength, good oxidation resistance and corrosion resistance, good fatigue performance, and fracture toughness. It is widely used to manufacture the hottest parts of aviation jet engines and various industrial gas turbines. It can also be used as high-temperature components of rocket engines, nuclear reactors, petrochemical and energy conversion equipment, etc. [0003] Nick...

Claims

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Application Information

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IPC IPC(8): C22B3/24C22B61/00
CPCY02P10/20
Inventor 王玉天胡劲张维钧文劲松张庆林上官映泉
Owner 昆明铂生金属材料加工有限公司
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