A method for recovering silver-rich keivite, marmatite and pyrite from a complex tin polymetallic ore

By using a step-by-step flotation method, combined with inhibitors and collectors, silver-rich tin ore is preferentially floated to ensure zinc-sulfur separation. This solves the problem of sulfide mineral recovery in complex tin polymetallic ores, achieving efficient recovery and process simplification.

CN119972371BActive Publication Date: 2026-06-09INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
Filing Date
2025-03-27
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing technologies cannot effectively recover sulfide minerals such as sterlingite, sphalerite, and pyrite from complex polymetallic tin ores, resulting in resource waste. Existing methods are complex or costly and cannot achieve efficient separation and recovery.

Method used

A step-by-step flotation method is adopted, combined with inhibitors, activators and collectors. Through coarse grinding and efficient flotation after regrinding, silver-rich tin ore is preferentially floated to ensure zinc-sulfur separation and obtain silver-rich tin ore, zinc concentrate and sulfur concentrate.

Benefits of technology

It enables the efficient recovery of various valuable sulfide minerals in complex tin polymetallic ores, improves concentrate grade and recovery rate, simplifies the process, reduces reagent usage, and is suitable for industrial applications.

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Abstract

The present application belongs to the technical field of mineral processing and recovery, and particularly relates to a method for recovering silver-rich keivetic, marmatite and pyrite from a complex tin polymetallic ore. The method comprises the steps of ore grinding, silver-rich keivetic preferential flotation, marmatite and pyrite mixed flotation, marmatite and pyrite flotation separation, etc. The mineral processing method combines the special properties of the complex tin polymetallic ore, utilizes the difference in floatability of sulfide minerals, adopts a step-by-step flotation enrichment process, realizes efficient enrichment and separation of valuable minerals in the complex tin polymetallic ore, effectively recovers silver-rich keivetic, marmatite, pyrite and other valuable minerals in the ore, and effectively reduces the mineral processing cost with low reagent consumption and good separation effect.
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