Charged magnetic hydrophobic material and preparation method and application thereof in separation of micro-fine-particle minerals

A hydrophobic material and electromagnetic technology, applied in the direction of solid separation, flotation, etc., can solve the problems of low ore concentrate grade, severe, and ineffective recovery of useful minerals, and achieve simple preparation methods, high recovery rates, and high-efficiency separation Effect

Active Publication Date: 2019-09-10
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the unsatisfactory treatment effect of the existing flotation technology on fine particles, the serious inclusion of fine particles in the flotation products, resulting in low concentrate grade, and the failure to achieve high-efficiency recovery of useful minerals and other technical problems, the first purpose of the present invention is to provide a A kind of charged electromagnetic hydrophobic material, this material has strong magnetism, and the surface has the property of a positively charged hydrophobic colloid, and can achieve fine minerals on the surface of the charged electromagnetic hydrophobic material through physical and chemical interactions with negatively charged and hydrophobic fine-grained minerals Agglomeration, so that the flotation separation of fine minerals in the pulp system can be realized by magnetic separation

Method used

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  • Charged magnetic hydrophobic material and preparation method and application thereof in separation of micro-fine-particle minerals
  • Charged magnetic hydrophobic material and preparation method and application thereof in separation of micro-fine-particle minerals
  • Charged magnetic hydrophobic material and preparation method and application thereof in separation of micro-fine-particle minerals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Preparation of the modified magnetic carrier: prepare a solution of benzyl hydroxamic acid with a concentration of 0.01mol / L and a solution of lead nitrate with a concentration of 0.02mol / L. Take 20 mL each and mix in a beaker (adjust the pH of the solution to 9.5), add 5 g of magnetite with a particle size ranging from 400 mesh to 600 mesh, and stir for 30 minutes at a speed of 200 r / min by a mechanical stirrer to make the magnetite The ore is in full contact with the lead metal complex of benzohydroxamic acid. The modified magnetite is filtered and dried in a vacuum oven to obtain the modified magnetic carrier.

[0046] Configuration of sodium oleate solution: Weigh 0.2436g sodium oleate in a beaker, add a little deionized water, heat to completely dissolve sodium oleate, transfer the solution to a 100mL volumetric flask, cool to room temperature, and then settle to volume to obtain a concentration of 8×10 -3 mol / L sodium oleate solution for use.

[0047] The schee...

Embodiment 2

[0051] Preparation of the modified magnetic carrier: prepare a solution of benzyl hydroxamic acid with a concentration of 0.01mol / L and a solution of lead nitrate with a concentration of 0.02mol / L. Take 20mL each and mix in a beaker (adjust the solution pH=10), add 5g of magnetite with a particle size ranging from 400 mesh to 600 mesh, and stir for 10 minutes at a speed of 200r / min by a mechanical stirrer to make the magnetite The ore is in full contact with the lead metal complex of benzohydroxamic acid. The modified magnetite is filtered and dried in a vacuum oven to obtain the modified magnetic carrier.

[0052] Configuration of sodium oleate solution: Weigh 0.2436g sodium oleate in a beaker, add a little deionized water, heat to completely dissolve sodium oleate, transfer the solution to a 100mL volumetric flask, cool to room temperature, and then settle to volume to obtain a concentration of 8×10 -3 mol / L sodium oleate solution for use.

[0053] Grind scheelite pure mi...

Embodiment 3

[0057] Preparation of the modified magnetic carrier: prepare a solution of benzyl hydroxamic acid with a concentration of 0.01 mol / L and a solution of calcium chloride with a concentration of 0.02 mol / L. Take 20 mL each and mix in a beaker (adjust the pH of the solution to 9.5), add 5 g of magnetite with a particle size ranging from 400 mesh to 600 mesh, and stir for 30 minutes at a speed of 200 r / min by a mechanical stirrer to make the magnetite The ore and the calcium metal complex of benzohydroxamic acid fully contact and react. The modified magnetite is filtered and dried in a vacuum oven to obtain the modified magnetic carrier.

[0058] Configuration of sodium oleate solution: Weigh 0.2436g sodium oleate in a beaker, add a little deionized water, heat to completely dissolve sodium oleate, transfer the solution to a 100mL volumetric flask, cool to room temperature, and then settle to volume to obtain a concentration of 8×10 -3 mol / L sodium oleate solution for use.

[00...

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Abstract

The invention discloses a charged magnetic hydrophobic material and a preparation method and application thereof in separation of micro-fine-particle minerals. The material includes magnetic particlesand a metal organic complex loaded on the surface, has strong magnetism, is positively charged on the surface, and has high electrostatic adsorption capacity for anions and high physical adsorption performance for hydrophobic micro-fine-particle minerals, and therefore, after micro-fine-particle minerals in ore pulp are subjected to surface hydrophobic and anion modification, the micro-fine-particle minerals can be adsorbed and agglomerated by utilizing the material, then the micro-fine-particle minerals are efficiently separated from gangue minerals through magnetic separation, thus solvinga difficult problem of separation and purification of ultrafine minerals. A preparation process of the charged magnetic hydrophobic material is simple and cheap and meets industrial production requirements.

Description

technical field [0001] The invention relates to a carrier material, in particular to a charged electromagnetic hydrophobic material, and also relates to the application of the charged electromagnetic hydrophobic material in the separation of microfine minerals in a slurry system, belonging to the technical field of mineral processing engineering. Background technique [0002] Mineral resources are the basic materials of the national economy, and their guarantee degree is related to the long-term stable development of the national economy and national security. Efficient development and utilization of mineral resources has been included in the outline of the national medium and long-term scientific and technological development plan. Tungsten is an important strategic resource and the metal with the highest melting point. It is widely used in alloys, electronics, chemical industry and other fields. It is an indispensable and substitute raw material for modern industry and hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02
CPCB03D1/023B03D1/025
Inventor 韩海生胡文吉豪都淳杰孙伟胡岳华王丽杨越孙磊曹建刘润清卫召王若林孙文娟岳彤刘若华
Owner CENT SOUTH UNIV
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