A reverse flotation collector and a preparation method and application thereof

By introducing reverse flotation collectors with -CN3H4 and/or -SO3H functional groups into diamine organic compounds, the problems of insufficient selectivity and adaptability of bauxite reverse flotation were solved, achieving efficient bauxite separation under hard water conditions and improving the grade and resource utilization of bauxite.

CN119747097BActive Publication Date: 2025-10-17ZHENGZHOU NON FERROUS METALS RES INST CO LTD OF CHALCO
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Patent Information

Application Number
CN202510002007.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-01-02
Publication Date
2025-10-17
Estimated Expiration
2045-01-02

AI Technical Summary

Technical Problem

Existing bauxite reverse flotation collectors have poor selectivity and insufficient adaptability, making it difficult to effectively separate useful minerals and gangue minerals in bauxite under hard water conditions. In addition, some collectors pose a risk of environmental pollution.

Method used

The reverse flotation collector R1-NH-R2-NH2 with chemical structure of formula (Ⅰ) enhances physical adsorption and electrostatic attraction with mineral surfaces by introducing -CN3H4 and/or -SO3H functional groups into the diamine organic compound, thereby improving selectivity and adaptability.

Benefits of technology

It enhances the collecting capacity and selectivity of reverse flotation collectors, enabling efficient separation of silicate minerals in bauxite under different water quality conditions, reducing reagent dosage, and improving resource utilization and concentrate grade.

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Abstract

The application relates to a reverse flotation collector and a preparation method and application thereof, and belongs to the technical field of reverse flotation desilication of bauxite. The reverse flotation collector has a chemical structural formula shown in formula (I): R1-NH-R2-NH2. In formula (I), R1 and / or R2 include at least one of the following functional groups: a -CN3H4 functional group and a -SO3H functional group. The diamine group and the -CN3H4 in the reverse flotation collector can enhance the action with hydroxyl, silicon, oxygen and other groups on the surface of aluminosilicate minerals, improve the selectivity of the reverse flotation collector; the -SO3H can reduce the mutual action with metal ions in hard water, improve the hard water resistance, improve the adaptability of the collector in hard water, and the hydrocarbon-based nonpolar macromolecular chain in R1 and / or R2 can strengthen the hydrophobicity of the ore grain surface after the collector acts, thereby improving the collecting capacity of the reverse flotation collector. Therefore, the reverse flotation collector has both selectivity and adaptability to minerals.
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Citation Information

Patent Citations

  • Preparation method of reverse flotation collector for bauxite

    CN102407189B

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