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Metal ion-organic ligand flotation reagent as well as preparation method and application thereof

A technology of organic ligands and metal ions, which is applied in the fields of flotation reagents and their preparation, metal ion-organic ligand flotation reagents and their preparation, which can solve the collection of difficult collectors, and it is difficult to reduce sulfide ore residues, etc. problem, to achieve the effect of simple process, convenient large-scale industrial production and stable reaction

Pending Publication Date: 2022-05-24
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Current research shows that it is difficult to reduce the residue of sulfide minerals in the tungsten separation stage by changing the collectors and inhibitors in the front stage of tungsten separation (desulfurization stage), mainly because the active sites of some sulfide minerals are masked and difficult to be captured Collector

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  • Metal ion-organic ligand flotation reagent as well as preparation method and application thereof
  • Metal ion-organic ligand flotation reagent as well as preparation method and application thereof
  • Metal ion-organic ligand flotation reagent as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Taking a polymetal in Chenzhou, Hunan Province as the research object, the effect of the dosage of Cu-thiocarbamide flotation reagents on the flotation index in the front stage of tungsten selection was investigated. The flow chart is as follows, the desulfurization adopts a rough sweep process, the rough selection pH=9.2, and the collector is Cu-sulfur ammonium ester collector (Cu 2+ It is prepared by reacting with thiourethane at a mass ratio of 2:1 at 50°C and pH=9.0 for 30 minutes, and is purified by carrier adsorption); sulfur sweeping is blank flotation without flotation reagents. The tungsten selection process is a rough selection, using 500g / t lead benzhydroxamate (Pb-BHA) collector, pH=9.8. It can be seen from the results that with the increase of the ligand collector, the desulfurization amount and desulfurization efficiency are both improved, especially the recovery rate can be increased by about 10%. At the same time, this agent basically has no effect on the...

Embodiment 2

[0037] A tungsten polymetallic field ore in Hunan was selected to carry out the step-by-step release test of Pb-ethyl sulfide enhanced desulfurization. Preparation conditions: Pb 2+ React with ethion at a mass ratio of 1:1 at 45°C and pH=9.5 for 40 min; flotation conditions: pH=9.0, 100g / t Pb-ethion. The results are shown below. It can be seen from the results that the desulfurization flotation has the highest grade and recovery rate in the first 1 minute; Pb-ethyl sulfide can strengthen the desulfurization flotation and improve the flotation efficiency of sulfide ore; Pb-ethyl sulfide can reduce the tungsten separation section after the activated desulfurization. The sulfur content has no effect on the flotation of tungsten.

[0038] Table 2 The results of the enhanced desulfurization test of a tungsten polymetallic ore in Hunan

[0039]

Embodiment 3

[0041] Cu-Ethylnitrogen (Cu 2+ With ethyl sulfide nitrogen in a ratio of 1.5:1 by mass, react at 55 ° C and pH = 8.5 for 50 min) to strengthen the industrial experimental research on desulfurization. The S grade in the tungsten concentrate product before and after the addition was monitored by the shift sample, and the results are as follows. It can be seen that the S content in the tungsten concentrate is significantly reduced after the addition of Cu-ethyl sulfide, and the grade of the tungsten concentrate is improved to a certain extent.

[0042] Table 3 The results of the industrial test of enhanced desulfurization in Shizhuyuan

[0043]

[0044]

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Abstract

The invention discloses a metal ion-organic ligand flotation reagent as well as a preparation method and application thereof. The reagent is formed by metal ions with the valence higher than bivalent, xanthate compounds and the like through coordination. The flotation reagent can effectively strengthen the desulfurization process of the high-sulfur tungsten ore, enhance flotation of residual fine-fraction pyrite, chalcopyrite, sphalerite and other sulfide ores in the front tungsten flotation section, reduce the sulfur content of the tungsten flotation section, purify the tungsten flotation environment, improve the tungsten flotation grade and recovery rate, and improve the tungsten flotation efficiency. The flotation reagent is applied to the flotation connection part of sulphide ore and tungsten ore in a beneficiation section, the influence of sulphide ore residues in tungsten flotation is reduced, and leap-type increase of tungsten flotation indexes of high-sulfur tungsten ore is achieved.

Description

technical field [0001] The invention relates to a flotation agent, a preparation method and application thereof, in particular to a metal ion-organic ligand flotation agent, a preparation method and application thereof, and belongs to the field of mineral processing technology utilization. Background technique [0002] As an important strategic resource, tungsten resources have always attracted attention for their development and comprehensive utilization. Tungsten resources exist in the form of oxide ores, usually accompanied by molybdenite, bismuthite, chalcopyrite, pyrite, sphalerite and other sulfide minerals, as well as calcite, quartz, garnet, fluorite, chlorite and other oxide minerals. As the country with the most abundant tungsten mineral resources in the world, my country's reserves account for more than 60% of the world's total reserves, and both reserves and output rank first in the world. The tungsten deposits in my country are unevenly distributed in time and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/02
CPCB03D1/018B03D2201/02Y02P10/20
Inventor 韩海生王若林孙伟胡岳华孙文娟
Owner CENT SOUTH UNIV
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