Sodium Sulfide (Oxide Ore Sulfidizer)
CAS Number: 1313-82-2
Sodium Sulfide is a sulfidizing agent used to convert the surface of oxidized copper, lead, and zinc minerals into sulfide-like surfaces, making them responsive to xanthate and dithiocarbamate collectors. This process, known as sulfidization, is fundamental to the flotation of oxide copper ores (malachite, azurite) and mixed oxide-sulfide ores where conventional xanthate collectors alone are insufficient. Sodium Sulfide enables recovery of oxide minerals that would otherwise be lost to tailings.
Technical Specifications
| appearance | Yellow to red-brown flakes |
| moisture (%) | ≤1.0 |
| Na2S content (%) | ≥60 |
| pH (1% solution) | 12-14 |
Applications
- Sulfidization of oxidized copper minerals (malachite, azurite) for flotation
- Surface activation of mixed oxide-sulfide copper ores
- Lead carbonate (cerussite) and zinc carbonate (smithsonite) flotation
- Sequential flotation of oxide zones in porphyry copper deposits
- Combined use with xanthate and dithiocarbamate collectors
Key Features
- Enables xanthate flotation of non-sulfide oxide copper minerals
- Critical for recovering oxide zones in mixed oxide-sulfide deposits
- Controlled dosage allows selective sulfidization without over-treatment
- High Na2S content reduces consumption and handling volume
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CAS Number
1313-82-2
Category
Mining / Flotation ChemicalsAvailability
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