Zinc Sulfate (Sphalerite Depressant)
CAS Number: 7733-02-0
Zinc Sulfate is the primary depressant for sphalerite (zinc sulfide) in differential lead-zinc flotation circuits, allowing selective flotation of lead minerals while zinc remains in the pulp for later recovery. When used in combination with sodium cyanide or sodium sulfite at alkaline pH, it forms stable zinc-hydroxide surface complexes that effectively prevent xanthate adsorption on sphalerite. Zinc Sulfate is essential in the classical lead-zinc selective flotation flowsheet.
Technical Specifications
| iron (%) | ≤0.001 |
| appearance | White crystalline powder or granules |
| pH (5% solution) | 3.5-5.5 |
| ZnSO4 content (%) | ≥99 |
Applications
- Sphalerite depression in lead-zinc differential flotation
- Combined use with sodium cyanide for enhanced zinc depression
- pH adjustment and pulp chemistry control
- Activation of sphalerite in later zinc flotation stages
- Pyrite depression in combination with lime and cyanide
Key Features
- Industry-standard sphalerite depressant for Pb-Zn differential flotation
- Synergistic depression with sodium cyanide at alkaline pH
- High purity minimizes contamination of flotation circuits
- Readily soluble for convenient preparation of dosing solutions
Send Inquiry
CAS Number
7733-02-0
Category
Mining / Flotation ChemicalsAvailability
In StockSample
Dispatched within 5 days
More in Mining / Flotation Chemicals
1,1,3-Triethoxybutane Frother (TEB)
4739-71-3
2-Ethylhexanol (Flotation Solvent / Frother)
104-76-7
2-Mercaptobenzothiazole (MBT)
149-30-4
Activated Carbon (Gold CIP/CIL Grade)
64365-11-3
Anionic Polyacrylamide Flocculant (APAM)
Butyl Diethanolamine Collector (BDEA Complex)
Cationic Collector Complex (Quaternary Ammonium Type)
Cationic Polyacrylamide Flocculant (CPAM)