Highly efficient collector for smithsonite flotation and preparation method thereof

By compounding isopropyl xanthate ethyl formate, dialkyl dithiocarbamate and mercaptoacetate, and introducing maleate groups and mercapto addition reactions on the tannic acid skeleton, multi-point adsorption and steric hindrance are formed, which solves the problem of poor selectivity of iron sphalerite by traditional collectors and achieves efficient and environmentally friendly iron sphalerite flotation effect.

CN122124927APending Publication Date: 2026-06-02内蒙古兴业集团融冠矿业有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
内蒙古兴业集团融冠矿业有限公司
Filing Date
2026-04-14
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In existing technologies, traditional collectors have poor selectivity and weak collecting power for sphalerite, making it difficult to overcome its strong hydrophilicity, resulting in low concentrate recovery rates. Furthermore, conventional methods increase reagent costs and environmental impact.

Method used

Using isopropyl xanthate ethyl formate, dialkyl dithiocarbamate, mercaptoacetate, and specially designed polymeric synergists, maleate groups and thiol addition reactions are introduced into the tannic acid skeleton through esterification reaction, forming multi-point adsorption and steric hindrance, thereby enhancing adsorption strength and selectivity.

Benefits of technology

It improves the recovery rate and concentrate quality of sphalerite, reduces reagent usage, lowers environmental impact, and achieves efficient and environmentally friendly sorting results.

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Abstract

This invention relates to the field of mineral processing flotation reagents, specifically disclosing a high-efficiency collector for the flotation of sphalerite and its preparation method. The high-efficiency collector provided by this invention achieves synergistic enhancement of the functions of each component by compounding isopropyl xanthate, dialkyl dithiocarbamate, and mercaptoacetate, and introducing a designed and synthesized polymeric synergist. The three basic collector components together constitute a dense and stable primary hydrophobic adsorption layer. The introduced synergist, on the one hand, enhances the adsorption strength and selectivity on the surface of sphalerite through multiple functional groups; on the other hand, its grafted hydrophilic polymer chains can form steric hindrance at the mineral-water interface and regulate local hydrophilicity and hydrophobicity, thereby further optimizing the hydrophobic state of the mineral surface and inhibiting gangue inclusions. The composite reagent provided by this invention improves the recovery rate of useful minerals while ensuring concentrate quality.
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