Polymer containing membrane for hydrometallurgical separation of precious metals, base metals and rare elements

A polymer and container technology, applied in the field of metallurgy, can solve the problems of unclear interaction and separation mechanism of PIM membrane components, low separation rate of precious metals and rare elements, etc.

Active Publication Date: 2021-05-18
LIUPANSHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although PIM membranes have shown good application performance in the field of metal separation, the selection and content ratio of base polymer, carrier and plasticizer will have a great impact on the separation performance of PIM membranes. PIM membrane components The interaction and separation mechanism of the PIM membrane is not yet clear. At the same time, on the basis of the PIM membrane, the separation rate of a certain amount of precious metals and rare elements that have separation value in the base metal deposit is relatively low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A polymer containing film, according to parts by weight, the raw materials include the following components:

[0030] 5 parts of polyvinyl chloride (PVC), 10 parts of extractant and 3 parts of 2-nitrophenyl octyl ether (NPOE);

[0031] The extractant used in this embodiment is tris(2-methylpropyl)phosphorus sulfide and tris(2-ethylhexyl)amine, wherein, tris(2-methylpropyl)phosphorus sulfide and tris(2-ethylhexyl) ) The mass ratio of amine is 1.56:1.

[0032] The preparation method of the polymer containing film:

[0033] (1) Dissolve PVC, NPOE and extractant in 20ml THF, stir with magnetic force for 3 minutes, pour into a polytetrafluoroethylene petri dish, cover with plastic wrap, and place it horizontally at 25°C for 24 hours until the solvent evaporates completely;

[0034] (2) After immersing in a small amount of deionized water, peel off the film along the bottom edge of the petri dish to obtain a polymer containing film with a thickness of 132 μm.

[0035] 1. E...

Embodiment 2

[0050] A polymer containing film, according to parts by weight, the raw materials include the following components:

[0051] 8 parts of PVC, 1 part of extractant and 3 parts of NPOE;

[0052] The extractant used in this embodiment is tris(2-methylpropyl)phosphorus sulfide and tris(2-ethylhexyl)amine, wherein, tris(2-methylpropyl)phosphorus sulfide and tris(2-ethylhexyl) ) The mass ratio of amine is 1.36:1.

[0053] The preparation method of the polymer containing film:

[0054] (1) Dissolve PVC, NPOE and extractant in 20ml of dichloromethane, stir with magnetic force for 4 minutes, pour into a polytetrafluoroethylene petri dish, cover with plastic wrap, and place it horizontally at around 26°C for 24 hours until the solvent evaporates completely;

[0055] (2) After immersing in a small amount of deionized water, peel off the film along the bottom edge of the petri dish to obtain a polymer containing film with a thickness of 120 μm.

[0056] Using the same test method as in ...

Embodiment 3

[0059] A polymer containing film, according to parts by weight, the raw materials include the following components:

[0060] 6 parts of PVC, 5 parts of extractant and 2 parts of NPOE;

[0061] The extractant used in this embodiment is tris(2-methylpropyl)phosphorus sulfide and tris(2-ethylhexyl)amine, wherein, tris(2-methylpropyl)phosphorus sulfide and tris(2-ethylhexyl) ) The mass ratio of amine is 1.41:1.

[0062] The preparation method of the polymer containing film:

[0063] (1) Dissolve PVC, NPOE and extractant in a mixture of 20ml of dichloroethane and chloroform, stir for 5 minutes with magnetic force, pour it into a polytetrafluoroethylene petri dish, cover it with plastic wrap, and place it horizontally at about 24°C 24h until the solvent evaporates completely;

[0064] (2) After immersing in a small amount of deionized water, peel off the film along the bottom edge of the petri dish to obtain a polymer containing film with a thickness of 140 μm.

[0065] Using th...

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Abstract

The invention discloses a polymer containing membrane for hydrometallurgy separation of precious metals, base metals and rare elements, and belongs to the technical field of metallurgy. The polymer containing membrane is prepared from the raw materials of PVC, an extracting agent and NPOE, and the extracting agent is tris(2-methylpropyl)phosphorus sulfide and tris(2-ethylhexyl)amine at the mass ratio of (1.36-1.56): 1. A preparation method comprises the steps of dissolving the PVC, the NPOE and the extracting agent in a volatile polar solvent, stirring for reaction to obtain a solution, pouring the solution into a container after the reaction is completed, and standing at 24-26 DEG C until the volatile polar solvent is completely volatilized so as to obtain the polymer containing membrane. The polymer containing membrane is capable of efficiently and selectively separating the precious metals and rare metals contained in base metal ore deposits, excellent in mechanical property and recycling performance and flexible in separation method, and has important popularization value in the field of hydrometallurgy.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a polymer containing membrane used for hydrometallurgical separation of noble and base metals and rare elements. Background technique [0002] Mineral resources are the product of the long-term formation, development and evolution of the earth's crust, and are formed by the accumulation of natural minerals under certain geological conditions and through certain geological processes. Different geological processes can form different types of minerals. According to the geological processes that form mineral resources and the sources of energy and materials, the geological processes that form mineral resources are generally divided into endogenous mineralization, exogenous mineralization, and metamorphic mineralization. and superimposed mineralization. Mineral resources are non-renewable resources, and their reserves are limited. At present, there are about 200 kinds of mineral...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/40C22B58/00C22B11/00
CPCC22B11/04C22B58/00Y02P10/20
Inventor 朱山马毅胡江良李松
Owner LIUPANSHUI NORMAL UNIV
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