Sodium Silicate (Flotation Depressant Grade)
CAS Number: 1344-09-8
Sodium Silicate is a versatile inorganic depressant and dispersant widely used in flotation circuits to depress gangue silicate minerals such as quartz, feldspar, and aluminosilicates, while allowing the target minerals to float. It also functions as a slime dispersant, preventing slime coating on mineral surfaces that would otherwise impair collector adsorption and selectivity. Sodium Silicate is available in various SiO2:Na2O modulus ratios suited to different flotation applications.
Technical Specifications
| appearance | Clear viscous liquid |
| Na2O content (%) | 8-12 |
| SiO2 content (%) | 27-30 |
| modulus (SiO2/Na2O) | 2.0-3.3 |
Applications
- Silicate gangue depression in metallic ore flotation
- Slime dispersion in complex ore processing circuits
- Iron ore flotation to depress silica
- Phosphate and fluorite flotation gangue control
- Combined use with amine collectors in reverse flotation
Key Features
- Effective silicate and gangue depressant across diverse mineral systems
- Dual function as dispersant prevents slime-related selectivity losses
- Multiple modulus grades available for different ore conditions
- Low cost and widely available for large-scale mining operations
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CAS Number
1344-09-8
Category
Mining / Flotation ChemicalsAvailability
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