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Method for selective flotation separation of molybdenum and rhenium acid radicals in alkaline leaching liquid

An alkaline leaching, selective technology, applied in flotation, solid separation and other directions, can solve the problems of poor selectivity, high cost, complicated process, etc., and achieve the effects of easy recovery, high recovery rate and simple operation.

Active Publication Date: 2020-02-11
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In view of the problems of poor selectivity, high cost, and complicated process in the separation of molybdenum-rhenate in alkaline solution in the prior art, the purpose of the present invention is to provide a method for efficiently and selectively separating molybdenum-rhenium in alkaline leachate by flotation. In this method, the selective flotation separation of molybdenum and rhenium is realized by modifying the activated carbon collector to selectively adsorb anionic group-type rhenic acid radicals, and regulate the interface properties of the precipitated particles.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In 1L containing molybdate root 1g / L, rhenate root 10mg / L alkaline leaching solution, use hydrochloric acid solution as pH adjuster, adjust the pH value of solution to be 7.1, add modified activated carbon collector in the solution, the concentration of collector The preparation method is as follows: the activated carbon particles are first finely ground until the mass percentage of the particle size of less than 5 microns is 100%, and the specific surface area of ​​the activated carbon is 500m 2 / g, disperse the finely ground activated carbon particles in water, the concentration of activated carbon in the aqueous solution is 10g / L, and then add composite organic matter in the solution, which consists of 20 parts by mass of triethylenetetramine, 30 parts by mass of tetraethylenepentamine, formazan 40 parts by mass of base violet 10B, 10 parts by mass of cocamidopropyl betaine; the mass ratio of activated carbon particles to composite organic matter is 1:0.5; mechanicall...

Embodiment 2

[0032] In 1L containing molybdate root 25g / L, rhenate root 1g / L alkaline leaching solution, use hydrochloric acid solution as pH regulator, adjust the pH value of solution to be 12, add modified activated carbon collector in solution, the concentration of collector The preparation method is as follows: the activated carbon particles are first finely ground until the particle size of less than 5 microns accounts for 100% by mass, and the specific surface area of ​​the activated carbon is 850m 2 / g, disperse the finely ground activated carbon particles in water, the concentration of activated carbon in the aqueous solution is 20g / L, and then add composite organic matter in the solution, which consists of 20 parts by mass of triethylenetetramine, 20 parts by mass of tetraethylenepentamine, formazan 40 parts by mass of base violet 10B, 20 parts by mass of cocamidopropyl betaine; the mass ratio of activated carbon particles to composite organic matter is 1:0.5; mechanically stirred ...

Embodiment 3

[0034] In 1L containing molybdate root 3g / L, rhenate root 50mg / L alkaline leaching solution, use hydrochloric acid solution as pH adjuster, adjust the pH value of solution to be 9, add modified activated carbon collector in the solution, the concentration of collector The preparation method is as follows: the activated carbon particles are first finely ground until the mass percentage of the particle size of less than 5 microns is 100%, and the specific surface area of ​​the activated carbon is 580m 2 / g, disperse the finely ground activated carbon particles in water, the concentration of activated carbon in the aqueous solution is 25g / L, then add the composite organic matter in the solution, which consists of 15 parts by mass of triethylenetetramine, 30 parts by mass of tetraethylenepentamine, formazan 35 parts by mass of base violet 10B, 20 parts by mass of cocamidopropyl betaine; the mass ratio of activated carbon particles to composite organic matter is 1:0.3; mechanically ...

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Abstract

The invention discloses a method for selective flotation separation of molybdenum and rhenium acid radicals in an alkaline leaching liquid. The method comprises the following steps that a pH value ofthe alkaline leaching liquid containing molybdate acid radicals and rhenium acid radicals is adjusted to 7.1-12, then an organic matter modified activated carbon collecting agent composed of triethylenetetramine, tetraethylenepentamine, methyl violet 10B and cocamidopropyl betaine and a surface active agent are added into the alkaline leaching liquid, pneumatic flotation is carried out, a foam product is a rhenium-rich component, and a liquid core is a molybdenum-rich solution. The method has the advantages that the selective separation effect is good on molybdenum and rhenium, the technological process is simple, and the cost is low, and is especially suitable for separation between the rhenium and the molybdenum in the alkaline leaching liquid with low rhenium content and high molybdenumcontent.

Description

technical field [0001] The invention relates to a method for separating molybdenum-rhenate radicals in an alkaline leaching solution, in particular to a method for selectively and efficiently separating molybdenum and rhenium in an alkaline leaching solution by using a precipitation flotation method, and belongs to the technical field of separation of similar elements in hydrometallurgy . 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] The application of molybdenum in the iron and steel industry occupies the primary position, accounting for about 80% of the total consumption of molybdenum, followed by the chemical industry, accounting for about 10%. In addition, molybdenum is al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/34C22B61/00B03D1/02
CPCC22B34/34C22B61/00B03D1/02
Inventor 韩桂洪刘兵兵黄艳芳王文娟苏胜鹏杨淑珍薛毓斌
Owner ZHENGZHOU UNIV
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