Method for separating and extracting rhenium from rhenium-molybdenum mixed solution and co-producing ferromolybdenum alloy

A technology of mixed solution and molybdenum-iron alloy, applied in the field of metallurgy, can solve the problems of high cost, poor selectivity, complex process, etc., and achieve the effects of low cost, high recovery rate and short process

Active Publication Date: 2021-04-16
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the problems of poor selectivity, high cost, and complicated process in the separation of molybdenum-rhenate radicals in the prior art, the purpose of the present invention is to provide a method for efficiently and selectively separating molybdenum-rhenium in the solution system and obtaining molybdenum-iron alloy by step-by-step precipitation method The method uses a highly selective precipita

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 60 parts by mass of ferric chloride hexahydrate, 30 parts by mass of humic acid, 5 parts by mass of sodium humate, and 5 parts by mass of sodium oleate into 100 mL of a mixed solution containing 100 mg / L of molybdate and 100 mg / L of rhenate , the concentration is 300mg / L, the pH value of the control solution is 5.0, stir evenly to obtain molybdenum precipitated particles, filter, and dry the filter cake to obtain molybdenum-rich component substances. Then add 70 parts by mass of magenta and 30 parts by mass of cetyltrimethylammonium bromide to the filtrate, the concentration is 600mg / L, the pH value of the control solution is 8.0, and flocculant is added into the solution, which consists of oil 50 parts by mass of sodium dodecylbenzenesulfonate, 20 parts by mass of sodium dodecylbenzenesulfonate, 20 parts by mass of disodium ethylenediaminetetraacetate, and 10 parts by mass of polyacrylamide. , and the product is dried as a rhenium-rich component substance. The obt...

Embodiment 2

[0038] Add 60 parts by mass of ferric chloride hexahydrate, 30 parts by mass of humic acid, 5 parts by mass of sodium humate, and 5 parts by mass of sodium oleate into 100 mL of a mixed solution containing 100 mg / L of molybdate and 100 mg / L of rhenate , the concentration is 300mg / L, the pH value of the control solution is 5.0, stir evenly to obtain molybdenum precipitated particles, filter, and dry the filter cake to obtain molybdenum-rich component substances. Add 70 mass parts of magenta and 30 mass parts of cetyltrimethylammonium bromide to the filtrate again, the concentration is 300mg / L, the pH value of the control solution is 8.0, and flocculant is added in the solution, and its composition is oil 50 parts by mass of sodium dodecylbenzenesulfonate, 20 parts by mass of sodium dodecylbenzenesulfonate, 20 parts by mass of disodium ethylenediaminetetraacetate, and 10 parts by mass of polyacrylamide. , and the product is dried as a rhenium-rich component substance. The obtai...

Embodiment 3

[0040] Add 60 parts by mass of ferric chloride hexahydrate, 30 parts by mass of humic acid, 5 parts by mass of sodium humate, and 5 parts by mass of sodium oleate into 100 mL of a mixed solution containing 1 g / L of molybdate and 100 mg / L of rhenate , the concentration is 3g / L, the pH value of the control solution is 5.0, and the molybdenum precipitate particles are obtained by stirring evenly, filtered, and the filter cake is dried to obtain the molybdenum-rich component substance. Then add 70 parts by mass of magenta and 30 parts by mass of cetyltrimethylammonium bromide to the filtrate, the concentration is 600mg / L, the pH value of the control solution is 8.0, and flocculant is added into the solution, which consists of oil 50 parts by mass of sodium dodecylbenzenesulfonate, 20 parts by mass of sodium dodecylbenzenesulfonate, 20 parts by mass of disodium ethylenediaminetetraacetate, and 10 parts by mass of polyacrylamide. , and the product is dried as a rhenium-rich componen...

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Abstract

The invention discloses a method for separating and extracting rhenium from a rhenium-molybdenum mixed solution and co-producing a ferromolybdenum alloy. The method comprises the following steps of adding a molybdic acid radical precipitator into the rhenium-molybdenum mixed solution, precipitating molybdic acid radical under a weakly acidic condition, and carrying out solid-liquid separation to obtain molybdenum-rich slag and a rhenium-containing solution; adding a rhenic acid radical precipitator and a flocculant into the rhenium-containing solution, flocculating and precipitating rhenic acid radical, and carrying out solid-liquid separation to obtain rhenium-rich slag; and carrying out high-temperature drying and reduction roasting on the molybdenum-rich slag to obtain the ferromolybdenum alloy. According to the method, the selective separation effect on molybdenum and rhenium is good, the process is simple, the application range is wide, the cost is low, and the method is particularly suitable for rhenium-molybdenum separation and recycle in a solution with low molybdenum content and high rhenium content.

Description

technical field [0001] The invention relates to a method for separating molybdenum and rhenium, in particular to a method for separating and extracting rhenium from a rhenium-molybdenum mixed solution and co-producing ferromolybdenum alloy, belonging to the technical field of metallurgy. Background technique [0002] Molybdenum and rhenium are rare refractory and rare dispersed metals respectively, and are extremely important and scarce strategic metals, but the resources of molybdenum and rhenium are extremely poor, and the abundance of molybdenum in nature is 1×10 -4 (%), the abundance of rhenium is only 1×10 -7 (%). [0003] As a rare metal, molybdenum is an important non-renewable strategic resource and an important basic material for developing high-tech, realizing national modernization, and building modern national defense. According to USGS statistics, the total amount of molybdenum mined in 2019 is 2.9 million tons. The main molybdenum mining areas in the world ar...

Claims

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Application Information

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IPC IPC(8): C22B3/44C22B34/34C22B61/00C21B15/02
CPCY02P10/20
Inventor 韩桂洪刘兵兵黄艳芳张蓓王益壮薛毓斌
Owner ZHENGZHOU UNIV
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