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A copper-based coordination polymer and its preparation method and its application as a gangue mineral inhibitor in the flotation of copper-nickel sulfide ore

A technology of coordination polymer and coordination polymerization, applied in flotation, solid separation and other directions, can solve problems such as difficulty in flotation separation, and achieve the effects of high-efficiency flotation separation, reduction of beneficiation cost, and simple preparation method.

Active Publication Date: 2020-02-28
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the difficulty in flotation and separation of surface-charged gangue minerals such as copper-nickel sulfide ore and serpentine in the prior art, the purpose of the present invention is to provide a copper-based coordination polymer, which is effective for surface-charged gangue minerals. Stone minerals (such as serpentine, quartz, etc.) have a strong selective inhibition flotation effect, and can be used to achieve efficient flotation separation of copper-nickel sulfide ores and positively charged gangue minerals such as serpentine.

Method used

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  • A copper-based coordination polymer and its preparation method and its application as a gangue mineral inhibitor in the flotation of copper-nickel sulfide ore
  • A copper-based coordination polymer and its preparation method and its application as a gangue mineral inhibitor in the flotation of copper-nickel sulfide ore
  • A copper-based coordination polymer and its preparation method and its application as a gangue mineral inhibitor in the flotation of copper-nickel sulfide ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041]Weigh 0.001mol of sodium polyacrylate (molecular weight about 2000) and 0.001mol of phosphorus pentachloride into a 500mL flask, add 300mL of chloroform as a solvent, stir and react at room temperature for 30min, and then purify the product and dry it in vacuum at 40°C get the product. Then add the product and 0.002mol carboxymethyl cellulose into a 500mL flask, add 0.22g sodium hypophosphite and 300mL glycerin, place in a sand bath heating pot, stir with a magnet and heat to 120°C, keep it warm for 30min, and then purify the product Then place it at 50°C for 24 hours in vacuum to obtain polyacrylic acid-carboxymethyl cellulose mixed anhydride. Put the mixed acid anhydride in a flask, add water to make the mass concentration 40%, then place it in a constant temperature water bath, stir it with a magnet, heat it to 80°C and keep it warm for 30 minutes. Weigh 0.2mol of copper sulfate to make a solution with a concentration of 3%, add it dropwise to the mixed anhydride at ...

Embodiment 2

[0046] Weigh 0.0015mol of sodium polyacrylate (molecular weight about 3500) and 0.0015mol of phosphorus pentachloride into a 500mL flask, add 300mL of chloroform as a solvent, stir and react at room temperature for 30min, and then purify the product and dry it in vacuum at 40°C get the product. Then add the product and 0.003mol carboxymethyl cellulose into a 500mL flask, add 0.18g sodium hypophosphite and 280mL glycerin, place in a sand bath heating pot, stir with a magnet and heat to 120°C, keep warm for 30min, and then purify the product Then place it at 50°C for 24 hours in vacuum to obtain polyacrylic acid-carboxymethyl cellulose mixed anhydride. Put the mixed acid anhydride in a flask, add water to make the mass concentration 45%, then place it in a constant temperature water bath, stir it with a magnet, heat it to 80°C and keep it warm for 30 minutes. Weigh 0.2mol of copper sulfate to make a solution with a concentration of 5%, add it dropwise to the mixed anhydride at ...

Embodiment 3

[0051] Weigh 0.002mol of sodium polyacrylate (molecular weight about 4000) and 0.002mol of phosphorus pentachloride into a 500mL flask, add 300mL of chloroform as a solvent, stir and react at room temperature for 30min, and dry the product in vacuum at 40°C after purification get the product. Then add the product and 0.004mol carboxymethyl cellulose into a 500mL flask, add 0.31g sodium hypophosphite and 340mL glycerin, place in a sand bath heating pot, stir with a magnet and heat to 120°C, keep it warm for 30min, and then purify the product Then place it at 50°C for 24 hours in vacuum to obtain polyacrylic acid-carboxymethyl cellulose mixed anhydride. Put the mixed acid anhydride in the flask, add water to make the mass concentration 40%, then place it in a constant temperature water bath, stir it with a magnet, heat it to 80°C and keep it warm for 30 minutes. Weigh 0.2mol of copper sulfate to make a solution with a concentration of 5%, add it dropwise to the mixed anhydride ...

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Abstract

The invention discloses a copper-based coordination polymer, a preparation method thereof and an application of the polymer serving as a gangue mineral inhibitor to copper-nickel sulfide ore flotation. Polyacrylic acid-carboxymethyl cellulose mixed anhydride and bivalent copper ions are coordinated and polymerized to obtain the copper-based coordination polymer. The copper-based coordination polymer can be effectively dispersed in solution and self-assembled to form colloidal particles loaded with strong negative charge on surfaces, so that the copper-based coordination polymer can be attachedto the surfaces of gangue minerals loaded with positive charged on the surfaces, and the gangue mineral is strongly hydrophilic. The copper-based coordination polymer is applied to copper-nickel sulfide ore flotation and has high selective inhibitory effects on the gangue minerals such as serpentines and quartz loaded with the positive charged on the surfaces, so that copper-nickel sulfide ores and the gangue minerals can be efficiently separated by flotation.

Description

technical field [0001] The invention relates to a flotation inhibitor, in particular to a flotation inhibitor used in the flotation process of copper-nickel sulfide ore to inhibit the flotation of positively charged gangue minerals, so as to realize the flotation of copper-nickel sulfide ore and serpentine, quartz and other gangue minerals. The invention relates to a flotation inhibitor for flotation separation, and also relates to a preparation method thereof, belonging to the technical field of mineral flotation. Background technique [0002] Copper-nickel sulfide ore is an important source of nickel resources in the world, and its recovery and utilization usually adopts the method and process of flotation. In copper-nickel sulfide ores, the main useful minerals are chalcopyrite, pentlandite, pyrrhotite and pyrite, etc., while the main gangue minerals are magnesium silicate, including serpentine, chlorite , quartz, talc, etc. Serpentine is a high-magnesium silicate miner...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/008B03D101/06B03D103/02
CPCB03D1/008B03D2201/06B03D2203/02
Inventor 孙伟卫召韩海生胡岳华张庆鹏王若林孙文娟
Owner CENT SOUTH UNIV
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